Note: Descriptions are shown in the official language in which they were submitted.
TOOL HANDLE
PRIOR RELATED APPLICATIONS
This application is a Patent Cooperation Treaty (PCT) application which claims
priority to
US non-provisional application Serial No. 15/276,914, filed 9/27/2016 and
provisional
application US 62/297,197, filed 2/19/2015.
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
This invention relates to hand tools and hand tool handles.
BACKGROUND AND DISCUSSION OF THE PRIOR ART
It is generally known to provide a soft elastomeric molded over cover on a
molded hard
thermoplastic core for improved grip for knives, screwdrivers, and the like
bladed tools. Such
prior art constructions are disclosed in Sane111, U.S. 4,712,304; Gakhar, U.S.
5,390,572; Hoepfl,
U.S. 5,964,009; and Panaccione, U.S. 5,956,799.
Improvements in tool handle handles are disclosed in US 6,471,186, granted
October 2,
2002 to Lawless, US 6,772,994, granted August 10, 2004 to Lawless, US
7,293,331, granted
November 13, 2007 to Lawless and US 8,032,991, granted October 11, 2011 to
Lawless
(hereinafter the "Lawless patents"). The Lawless patents generally disclose
symmetrically
circumferentially disposed hard thermoplastic grip elements, and in
combination with soft
elastomeric grip elements. The Lawless patents' handles did not provide the
desired ergonomic
grip, particularly for diverse commercial uses for tools. It was known in the
art to provide a
1
Date Recue/Date Received 2020-09-10
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
screw driver handle with a triangular configuration having machinist rounded
corners for tool bit
stowage, as disclosed in US 6,164,172, issued December 26, 2001 to Huang.
It is a principal object ot the present invention to provide tool handle of
improved
ergonomic functionality for diverse commercial uses.
It is a further object of the present invention to provide a tool handle as
aforesaid with
improved leverage or torque functionality.
It is a further object of the present invention to provide a tool handle as
aforesaid with an
improved impact end cap.
It is still a further object of the present invention to provide an ergonomic
tool handle that
is of practical design and safe and practical in commercial scale and use.
SUMMARY OF THE INVENTION
The invention, in a principal aspect, is a tool handle having a proximate end
and a distal
end and a grip portion disposed between the proximate end and the distal end,
and the grip
portion has a plurality of lobes and each lobe comprises an outwardly disposed
arcuate or
curved surface.
The invention, in a more specific aspect, is a tool handle as aforesaid,
wherein the grip
portion has three lobes spacedly disposed about 120 , and each said lobe has
an arcuate
surface that subtends an arc of at least 45'1 to about 90 , and preferably
about 450 to 60 and
most preferably about 60 .
The invention is a tool handle as aforesaid that includes a centerline, and
the grip portion
has an upper surface and a lower surface, and the grip portion has three lobes
spacedly
angularly disposed with respect to the centerline, and two lobes are disposed
adjacent the
upper surface and one lobe is disposed adjacent the lower surface.
2
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
The invention in a further aspect is a tool handle as aforesaid wherein a grip
portion is
disposed between the proximate end and the distal end, and more adjacent the
proximate end
and the grip portion has three lobes, each lobe has an arcuate surface that
subtends an arc of
at least 450 to at least about 90 , and a blade receiving centerline orifice
of a polygonal
configuration, particularly a rectilinear configuration. And the grip portion
adjacent the proximate
end has three generally planar surfaces, and each lobe extends outwardly from
and between
two of the generally planar surfaces, and wherein at least one right angle of
the rectilinear
configuration orifice is facingly disposed to one lobe or to one generally
planar surface for
improved torque functionality.
The invention in a still further aspect is a tool handle as aforesaid further
including an
end cap, and having means for fixedly disposing the end cap to the handle
proximate end. The
means for fixedly disposing the end cap is a plurality of outwardly extending
pointed elements
grippingly engaging the hard thermoplastic handle to prevent displacement of
the end cap. The
end cap may alternatively have outwardly extending proximately extending grip
elements
grippingly engaging the hard thermoplastic handle.
The invention, in a further aspect, is a tool handle end cap as an immediately
aforesaid
with a tang with through hole for securing a tether, and the tang is rotatably
disposed with
respect to the end cap, and slidably disposed between the end cap and the
handle so that a
tether disposed in the through hole and rotates with the tang in using the
tool.
The invention, in still a further aspect is a tool handle as first aforesaid
having a
centerline, and the handle has an upper surface and a lower surface, and
further includes a
thumb engaging portion disposed at the neck between the grip portion and the
distal end, and
the thumb engaging portion has a plurality of ridges, the ridges having
different lengths.
3
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
The invention, in still a further aspect, is a tool handle as immediately
aforesaid with
ridges disposed at the neck and being in parallel disposition with respect to
the centerline, and
further being disposed at the upper and lower surfaces of the neck.
The invention, in still a further aspect, is a tool handle as aforesaid with
ridges being
transversely disposed to the centerline, and the ridges extend from the upper
surface to the
lower surface. The tool handle as aforesaid is particularly a screwdriver
handle.
The invention, in still a further aspect, is a striking tool sleeve handle
wherein a distal
end and a grip portion are disposed between the proximate end and the distal
end, and the grip
portion has a plurality of lobes, each lobe has an outwardly disposed curved
surface, and
handle having a plurality of generally planar surfaces, and also includes a
polygonal through
hole extending from the distal end to the proximate end for slidably receiving
a polygonal
striking tool. And the plurality of ridges or splines are disposed inwardly
from the through hole
generally planar surface for receiving the striking tool. And preferably said
polygonal through
hole comprises a regular hexagon, and each angle of the regular hexagon is
facingly disposed
to at least one lobe or one generally planar surface.
The invention, in yet a further aspect, is a metal end cap with outwardly
radially disposed
pointed ribs or alternatively outwardly proximately disposed pointed prongs,
embedded and
grippingly engaged in the core thermoplastic handle. A projecting element or
tang with a tether
receiving through hole is slidably rotatably disposed with respect to the end
cap and jhandie
proximate end.
4
CA 03015136 2018-08-17
WO 2017/142605
PCMJS2016/064318
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a top distal to proximate end perspective view of a first embodiment
of the pry
bar of the present invention;
FIG. 2 is a bottom proximate to distal end prospective view of the tool handle
of FIG 1;
FIG. 3 is a top plan view of the tool handle of FIG. 1;
FIG. 4 is a side view of the tool handle as shown in Fla 3;
FIG. 5 is an enlarged bottom view of the tool handle as shown in FIG. 3;
FIG. 6 is an enlarged sectional view taken along 6-6 of FIG. 3;
FIG. 7 is a sectional view taken along 7-7 of FIG. 6;
FIG. 8 is an enlarged sectional view taken along 8-8 of FIG.3;
FIG. 9 is an enlarged sectional view taken along 9-9 of FIG. 3;
FIG. 10 is a perspective view of a second embodiment of the tool handle of
the present invention;
FIG. 11 is a top plan view of the tool handle of FIG. 10;
FIG.12 is a side view of the tool handle of FIG. 11;
FIG. 13 is a sectional view taken along 13-13 of FIG. 11;
FIG. 14 is a perspective view of a third embodiment of the tool handle;
FIG. 16 is a side view of the tool handle of FIG. 15;
FIG. 17 is a sectional view taken along 17-17 of FIG. 15;
FIG. 18 is a perspective view of a fourth embodiment of the tool handle of
the present invention;
CA 03015136 2018-08-17
WO 2017/142605
PCMJS2016/064318
FIG. 19 is a top plan view of the tool handle of FIG. 18;
FIG. 20 is a side view of the tool handle of FIG. 19;
FIG. 21 is a sectional view of the tool handle taken along 21-21 of FIG. 19;
FIG. 22 is a front perspective view of the stubby or awl handle embodiment;
FIG. 23 is a side elevational view of the embodiment of FIG. 22;
FIG. 24 is a sectional view taken along 24-24 of FIG. 23;
FIG. 25 is another side elevational view of the embodiment of FIG. 22;
FIG. 26 is a distal end view of the embodiment of FIG. 22;
FIG. 27 is a sectional view taken along 27-27 of FIG. 25;
FIG. 28 is a front perspective view of the screwdriver technician handle
embodiment;
FIG. 29 is a side elevationsl view of the embodiment of FIG. 28;
FIG. 30 is a sectional view taken along 30-30 of FIG. 29;
FIG. 31 is another side elevational view of the embodiment of FIG. 28;
FIG. 32 is a sectional view taken along 32-32 of FIG. 29;
FIG. 33 is a sectional view taken along 3-33 of FIG. 29;
FIG. 34 is a distal end view of the embodiment of FIG. 28;
FIG. 35 is an enlarged view of the end cap construction as shown in FIG. 28;
FIG. 36 is a front perspective view of a screwdriver mechanic handle
embodiment;
FIG. 37 is a side elevational view of the embodiment of FIG. 36;
FIG. 38 is a sectional view taken along 38-38 of FIG. 36;
FIG. 39 is another side elevational view of the embodiment of FIG. 36;
FIG. 40 is a sectional view taken along 40-40 of FIG. 36;
FIG. 41 is a sectional view taken along 41-41 of FIG. 36;
FIG. 42 is a distal end view of the embodiment of FIG. 36;
6
CA 03015136 2018-08-17
WO 2017/142605
PCMJS2016/064318
FIG. 43 is an enlarged view of the end cap construction as shown in FIG. 38;
FIG. 44 is a front perspective view of the technical tool handle embodiment;
FIG. 45 Is a side elevational view taken along 45-45 of FIG. 44;
FIG. 46 is a sectional view taken along 46-46 of FIG. 45;
FIG. 47 is another side elevational view of the embodiment of FIG. 44;
FIG. 48 is a sectional view taken along 48-48 of FIG. 44;
FIG. 49 is a sectional view taken along 49-49 of FIG. 44;
FIG. 50 is a distal end view of the embodiment of FIG. 44;
FIG. 51 is an enlarged view of the end cap construction as shown in FIG. 46;
FIG. 52 is a perspective view of a further embodiment of the tool handle;
FIG. 53 is an elevational view of the tool handle of FIG. 52;
FIG. 54 is a sectional view taken along the line 54-54 of FIG. 52;
FIG. 55 is a side elevational view of the tool handle of FIG. 53;
FIG. 56 is a distal end view of the tool handle of FIG. 53;
FIG. 57 is a sectional view taken along line 57-57 of FIG. 53;
FIG. 58 is a sectional view taken along line 58-58 of FIG. 53;
FIG. 59 is a perspective view of a further embodiment of the tool handle;
FIG. 60 is an elevational view of the tool handle of FIG. 59;
FIG. 61 is a sectional view taken along line 61-61 of FIG. 60;
FIG. 62 is a side elevational view of the tool handle of FIG. 60;
FIG. 63 is a distal end view of the tool handle of FIG. 60;
FIG. 64 is a sectional view taken along line 64-64 of FIG. 60
FIG. 65 is a sectional view taken along line 65-65 of FIG. 60;
FIG. 66 is a top plan a view of a further embodiment of the tool handle;
7
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
FIG. 67 is a side elevational view of the tool handle of FIG. 66;
FIG. 68 is a bottom plan view of the tool handle of FIG. 66;
FIG. 69 is a sectional view taken along line 69-69 of FIG. 68;
FIG. 70 is a sectional view taken along line 70-70 of HG. 69;
FIG. 71 is a sectional view taken along line 71-71 of FIG. 66;
FIG. 72 is a distal end view of the tool handle of FIG. 66;
FIG. 73 is a top perspective view of an elongate extreme duty embodiment of
the tool handle;
FIG. 74 is a bottom perspective view of the tool handle of FIG. 73;
FIG. 75 is a top plan view of a striking tool sleeve handle;
FIG. 76 is a perspective view of the sleeve handle of FIG. 75;
FIG. 77 is a proximate end view of the sleeve handle of FIG. 75;
FIG. 78 is a distal end view of the sleeve handle of FIG. 75;
FIG. 79 is a sectional view taken along line 79-79 of FIG. 75;
FIG. 80 is a sectional view taken along line 80-80 of FIG. 75; and
FIG. 81 is a sectional view taken along line 81-81 of FIG. 75.
8
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIGS. 1-9, there is shown a first embodiment pry bar 10 of the
present
invention. Pry bar 10, in general terms, includes handle 11 and a fixedly
attached or secured
metal blade or shank 12. Handle 11 has a planar proximate end 13 and a planar
distal end 14.
Blade 12 has a proximate end 15 (FIG. 7) and a distal end 16. Handle 11 is
formed of a hard
thermoplastic molded core 17 and a molded over integrally bonded elastomeric
cover 18,
wherein cover 18 is formed of relatively soft elastomeric material. The
proximate end 15 of
blade 12 is securely fixedly molded in core 17 rectilinear hole 91 with the
formation of core 17.
The elastomeric cover 18 is then molded over or around specific portions of
the core 17, to
provide a grip portion 95, as further discussed hereinafter. Blade 12 is of
generally square
cross-sectional bar stock construction and has a proximate end 15 and a distal
end 16.
Proximate end 15 is molded in situ with core 17, so as to be fixedly secured
within handle 11, by
means well known in the art.
A metal impact cap 50 is fixedly disposed or molded into the distal end of the
handle 11.
Cap 50 is secured within the handle core 17 by means well known in the
thermoplastic molding
art. Cap 50 is used, by way of example, to impact screw heads prior to driving
same.. The
proximate end of core 17 is cooperatively formed with a serrated hole 92 for
fixedly securing
serrated portion 93 of metal cap 50 in the handle proximate end.
Blade distal end 16 is formed with a pry end 53. Pry end 53 has outwardly
tapered sides
54, and upper and lower surfaces 56 and 57. Surfaces 56 and 57 are tapered and
extend
towards sharpened edge or tip 58. Tip 58 is upwardly angularly disposed with
respect to shank
12.
9
CA 03015136 2018-08-17
WO 2017/142605
PCMJS2016/064318
The elastomeric material cover 18 does not cover the entire core 17.
Elastomeric
material cover 18 is molded over hard thermoplastic core 17 peripherally in
the triangular
sectional shaped handle grip portion 95. Generally triangularly shaped cross-
section grip
portion 95 is formed of the upper or top upwardly cured first surface 81, and
outwardly curved
side surfaces 82 and 33, with bottom curved portion or apex 84 (FIG. 8). The
grip portion 95 is
over-molded as at 85 by elastomeric material so as to essentially surround the
thermoplastic
core at the grip portion. The respective distal 85 and proximate 87
thermoplastic core portions
are exposed and not over-molded (FIGS. 3-7).
A series of four transversely disposed oval recesses 88 (typical) are formed
at the
bottom curved portion 84 and extend upwardly along the sides of over-molded
elastomeric grip
portion 85. The oval elastomeric recesses 88 extending upwardly from apex 84
and provide
improved finger gripping functionality. Three to four elastomeric encompassed
grip oval finger
receiving recesses are provided commensurate with the length of the handle.
A series of parallel outwardly extending ridged elements 89 is formed in the
upper
exposed hand thermoplastic core to provide a thumb receiving and holding
recess, in
combination with the finger receiving oval recesses 88, for improved ergonomic
grip.
A metal tang 71 with tether hole 72 is rotatably disposed between metal impact
cap 50
and handle planar proximate end 13, as further discussed hereinafter.
Handle 11 is formed with centerline 81, and metal impact cap is formed with
axis or
centerline 62. As best shown in FIG. 7, the centerlines 61 and 62 are
spatially disposed or
offset in the side elevational direction. The spatial disposition provides
improved impact cap
functionally in using the impact cap for heavy-duty diverse impact for use,
and as further
discussed hereinafter with respect to the embodiments of FIGS. 10-21.
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
Referring to FIGS. 10-13, there is shown a second embodiment handle 111.
Handle 111
is more elongated than handle 11. The handle centerline 162 is offset or
spatially disposed
from end cap centerline in axis 163 to a greater extent (FIG. 13) than lines
62 and 63, Handle
111 has the triangularly shaped sectional elastomeric grip portion 185 similar
to that of first
embodiment grip portion 85, with four oval finger receiving recesses 188
(typical).
Referring to FIGS. 14-17, there is shown a third embodiment handle 211. Handle
211 is
somewhat less elongated than handle 111. The handle centerline 252 is offset
or spatially
disposed from end cap centerline or axis 263 to a lesser degree (FIG. 17) than
centerlines 162
and 163 of the second embodiment. Handle 211 is formed with elastomeric
triangular grip
portion 285 with four oval finger receiving recesses 288 (typical), similar to
that of embodiment
111.
Referring to FIGS. 18-21, there is shown a further embodiment handle 311.
Handle 311
is substantially less elongated than the prior embodiments. The handle 311
centerline 362 and
end cap centerline or axis 363 are slightly offset and nearly coincident (FIG.
21). Handle 311
elevational triangular grip portion 365 is similar to that of the prior
embodiment. However,
handle 311 has only three oval finger receiving recesses 388, and yet in this
shorter compact
embodiment provides an improved ergonomic grip.
As demonstrated in FIGS. 1-21, the vertical spatial disposition between the
handle
centerline and the end cap centerline or axis is commensurately proportioned
to the length of
the handle. This end cap and grip portion disposition, and in further
combination with the
generally triangular grip portion, provides improved grip functionally in both
the pry bar and end
cap operational modes.
Referring to FIGS. 22-27, there is shown a stubby or awl embodiment of the
present
invention, namely handle 400. Handle 400 has a trilobular proximate end grip
portion 401. Grip
11
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
portion 401 has three lobes 402 that subtend an arc of about BO , and three
generally planar
surfaces 403 disposed between the lobes 402. Handle 400 has a neck having
distal end grip or
thumb receiving portion 404. Grip portion 404 is over molded with elastomeric
material as at
405. Grip portion 404 is formed of a plurality of elongate outwardly disposed
ridges 406 of
increasing and decreasing lengths. Ridges 406 are in parallel disposition with
centerline 416.
The proximate end of handle 400 is formed with orifice 407 for receiving an
awl blade or
screwdriver blade (not shown). In this manner of construction, handle 400
provides improved
ergonomic grip and torque functionality in tight operating environments.
Referring to FIGS. 28-35, there is shown screwdriver technician handle 500.
Handle
500 has a hard thermoplastic molded end cap 501. End cap 501 is press fitted
into recess 502
at proximate end 503. End cap 501 is of removable construction and may be
color coded to
signify the functionality of the blade (not shown) disposed in distal end
orifice 504. Proximate
end grip portion 505 is of trilobular configuration composed of three lobes
502, and each lobe
subtends an arc of about 60 . And three generally planar surfaces 507 are
disposed between
the lobes 502. Lobes 502 are over molded with elastomeric material as at 510.
Distal end grip
portion 508 is composed of radially disposed ridges 511 of similar
configuration to embodiment
400.
Referring to FIGS. 36-43, there is shown a heavy duty screwdriver embodiment
handle
550. Handle 550 is of similar construction and configuration as to embodiment
500. Handle
550 has a metal end cap 560. End cap 560 is forced fitted into recess 561. End
cap 560
includes a plurality of radially disposed pointed elements or prongs 570 which
are curved and
extend towards the proximate end so as to grippingly engage the core as at
571. In this manner
of construction, the end cap is not displaced along the centerline 575 in
using the tool.
12
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
Proximate and distal grip portions 580 and 590 of embodiment 550 are of
similar construction to
embodiment 500.
Referring to FIGS. 44-51, there is shown a pry bar technician handle 600
embodiment.
Handle 600 is formed with a distal end rectilinear orifice 601 for receiving a
rectilinear pry bar
blade (FIGS. 3-6). Handle 600 has a metal end cap 605 which is forced fitted
and fixedly
disposed in recess 606. End cap 605 is formed with a radially disposed pointed
prongs 607 for
grippingly engaging the core as at 608. A spacer 609 is disposed between
fixedly disposed end
cap distal end and the proximate end of the rectilinear pry bar blade, for
purposes hereinafter
appearing. An outwardly extending plate or tang 620 is slidably disposed
between the end cap
605 and handle proximate end. Tang 620 is formed with through hole 621 for
receiving a
lanyard or tether (not shown). Spacer 609 is sized so that tang 620 is
slidably rotatably
disposed with respect to the end cap. In this manner of construction, a tether
or lanyard is
looped and held in through hole 621 and consequentially rotataes and moves
freely with
operation of the pry bar or like tool.
Proximate end grip portion 630 is of similar construction and configuration as
in handle
500. The right angled corners 631 of rectilinear orifice 601 are facingly
disposed to one of the
generally planar surfaces 632 and one of the arcuate lobes 633 for improved
force transmission.
Distal end grip portion 640 is formed with a plurality of ridges 641 of
diverse lengths in
transverse and parallel disposition. Ridges 641a at neck 642 extend around and
encompass
the circumference of neck 642. Ridges 641b are arcuate. In this manner of
construction, there
is improved leverage force transmission from the grip portions 630 and 640 to
the pry bar blade
(FIGS. 3-6).
Referring to FIGS. 52-58, there is shown the heavy duty pry bar handle 700.
Handle
700 has a fixedly disposed metal end cap 701. Proximate end grip portion 705
has an upper
13
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
surface 706 and lower surface 707. Lower surface 707 is sinusoidal as at 707a,
707b and 707c.
Upper surface 706 is upwardly bowed as at 706a. Proximate end grip portion 705
has three
arcuate lobes 708a, 708b and 709. Lobes 708a and 708b are disposed at upper
surface 706.
Lobe 709 is disposed at lower surface 707. Lobes 708a and 708b each subtend an
arc of about
45 to 90 . Lobe 709 is of lesser curvature than lobes 708a and 708b. Lobes
708a, 708b arid
709 are over molded with elastomeric material. Handle 700 has two generally
planar surfaces
711 between lobes 708a and 709 and 708b and 709 respectively (FIG. 57). Upper
surface 706
is arcuate and is contoured with over molded lobes 707 and 708. In this manner
of
construction, there is an improved grip for heavy duty pry bar use. Distal
grip portion 720 is
disposed at neck 725 and has a plurality of tapered ridges in parallel
disposition as in
embodiment 600. The proximate and distal grip portions complement each other
for improved
leverage force transmission.
Referring to FIGS. 59 ¨ 65, there is shown an alternate heavy duty pry bar
handle 750.
Handle 750 has similar proximate end and distal end grip portions as in
embodiment 700.
Handle 750 has a metal end cap 751 with rotatable tang 752 of similar
construction as in
embodiment 600. The upper lobes 760 are of greater curvature than lower
surface lobe 770
(FIG. 64).
Referring to FIGS. 66-74, there is an extreme use pry bar handle 800. Handle
800 has
an elongate proximate end grip portion 810 and a proximate distal end grip
portion 820. Handle
800 has a metal end cap 805 with rotatable tang 806 of similar construction to
end cap 605.
Proximate end grip portion 810 has an upper surface 811 and a lower surface
812. Upper
surface 811 is outwardly or upwardly curved, and lower surface is inwardly
curved. Grip portion
810 is over molded as at 813. A plurality of six transversely and spacedly
disposed generally
oval configured finger receiving recesses 815 (typical) are formed at inwardly
curved lower
14
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
surface 812. The over molded material 813 surrounds and defines the
thermoplastic core
recesses 815.
Distal end grip portion 820 is formed at neck 818. A plurality of outwardly
disposed
thumb engaging ridges 821 are molded or formed in the upper surface of neck
818. A
rectilinear hole 825 is molded or formed along the centerline of the tool
handle and extends from
the distal end of the handle to the end cap for receiving a pry bar blade or
like tool blade (FIGS.
3-6).
Referring specifically to FIG. 71, there is shown grip portion 810 having two
upper
surface lobes 827 and 826 and one lower surface lobe 829. Lobes 827-829 are
over molded
with elastomeric material 813. The over molded lobes 827 and 828 are more
arcuate or of
greater curvature than over molded lobe 829.
In the aforesaid manner of construction, grip portions 810 and 820, with the
respective
over molded arcuate portions of the lobes, and non-over molded recesses 815
and ridges 821
provide an ergonomic grip with improved leverage transmission in extreme or
heavy duty pry
bar use.
Referring to FIGS. 75-81, there is shown striking tool sleeve handle 900.
Handle 900
has a proximate end 901 and a distal end 902. A regular hexagonal through hole
905 extends
from proximate end 901 to distal end 902. A plurality of six elongate elements
or splines 910
are inwardly disposed in through hole 905, and have tapered ends 905a (FIG.
81) for slidably
receiving a hexagonal striking bar (not shown). Proximate end 901 is
integrally formed with an
outwardly extending cylindrical end piece or guard cap 920. Guard cap 920 is
formed with
through hole 921 for receiving a tether or lanyard (not shown).
Handle 900 is formed with grip portion 950 and neck 951. Grip portion 950 has
outwardly extended portion 952. Over molded elastomeric material 955 extends
from portion
CA 03015136 2018-08-17
WO 2017/142605 PCMJS2016/064318
952 through neck 951 (FIGS. 79-81). Referring specifically to FIG. 79, there
is shown two upper
surface lobes 970 and one lower surface lobe 971. Lobes 970 are more curved or
arcuate than
lobe 971, In the aforesaid manner of construction, there is provided an
ergonomic grip, readily
and safely usable striking tool sleeve handle.
The invention being thus described, it will be obvious that the same may be
varied in
many ways. Such variations are not to be regarded as a departure from the
spirit and scope of
the present invention, and all such modifications as would be obvious to one
skilled in the art
are intended to be included within the scope of the adjoined claims.
16
