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Sommaire du brevet 1300667 

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  • lorsque le brevet est émis (délivrance).
(12) Brevet: (11) CA 1300667
(21) Numéro de la demande: 1300667
(54) Titre français: CONNECTEUR SERVANT A LA FIXATION TEMPORAIRE DE L'EXTREMITE LIBRE D'UNE COURROIE DE LEVAGE
(54) Titre anglais: CONNECTOR FOR RELEASABLE SECUREMENT TO THE FREE END OF A LIFTING STRAP
Statut: Périmé et au-delà du délai pour l’annulation
Données bibliographiques
Abrégés

Abrégé anglais


ABSTRACT OF THE DISCLOSURE
A connector for the releasable securement of one end of
a lifting strap is provided whereby the connector allows
strapping to be engaged with a component to be lifted and by its
structure allows the strap to have a free unobstructed end so
that the strap can be pulled free of the component that was
lifted through a minimum of space. The connector of the
invention also provides an improved nd simplified structure,
which is simple in operation, and which allows a lifting assembly
to handle components with substantially one strap length.

Revendications

Note : Les revendications sont présentées dans la langue officielle dans laquelle elles ont été soumises.


-8-
The embodiments of the invention in which an exclusive
property or privilege is claimed are defined as follows:
1.
A connector comprising:
A body portion having opposite ends and a hollow interior,
stationary anchor means in said body portion arranged to
receive a doubled and looped end of a strap thereover comprising
free and lifting end portions and arranged to pinch the free end
portion between it and the lifting end portion by a lift force
on the latter,
and pin means removably mounted in said body portion
arranged for insertion in the loop of the looped end of the
strap for holding the latter in a secured position on said body
portion with the free end of the strap pinched between said
anchor means and the lifting end portion and also arranged
for removal from the interior of said body portion to release the
strap from said body portion.
2.
The connector of claim 1 including winding means on said
body portion arranged to take up excess of the free end portion
from said releasable anchor means.
3.
A connector for releasable securement to the free end portion
of a lifting strap having a lifting end portion, said connector
comprising:
a body portion having a pair of spaced side walls defining
an open bottom end,
a connecting top wall portion integral with said side walls,
means on said top connecting wall portion arranged for

-9-
connection to a lift line,
a cross bar extending between said side walls and in-
tegral therewith,
and a pin removably mounted in apertures in said side
walls at a point spaced from said cross bar and intermediate
said cross bar and said open bottom end of said body portion,
said pin being arranged for insertion in said apertures
and through a loop formed in a strap which has been doubled
over from its free end and first laid over said cross-bar to
position a free end portion of the strap between said cross
bar and the lifting end of the strap, whereby the strap is
securely connected to said connector until removal of said
pin by a lifting force on the lifting end portion of the
strap which pinches the free end portion between said cross
bar and the lifting end portion.
4.
The connector of claim 3 including winding means on said
body portion arranged to take up excess of the free end
portion from said end.
5.
The connector of claim 3 including ratchet take-up
shaft means on said body portion arranged to take-up excess
of the free end portion from said pin.
6.
The connector of claim 3 including a knurled surface
on said cross bar.

-10-
7.
In combination:
a lifting strap having a free end portion and a lifting
end portion;
a connector having a body portion comprising a pair of
spaced side walls defining an open bottom end,
a connecting portion integral with said side walls,
means on said connecting wall arranged for connection
to a lift line,
a cross bar extending between said side walls and in-
tegral therewith,
and a pin removably mounted in apertures in said side
walls at a point spaced from said cross bar and intermediate
said cross bar and said open bottom end of said body portion,
said pin being arranged for insertion in said apertures
and through a loop formed in a strap which has been doubled
over from its free end and first laid over said cross bar to
position a free end portion of the strap between said cross
bar and the lifting end of the strap, whereby the strap is
securely connected to said connector until removal of said
pin by a lifting force on the lifting end portion of the
strap which pinches the free end portion between said cross
bar and the lifting end portion.

-11-
8.
The combination of claim 7 including length indicating
means on said strap.

Description

Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.


- CONNECTOR FOR RELEASABLE SECUREMENT TO THE FR~E END OF A
LIFTING STRAP
Backqround of the Invention
This invention relates to new and useLul improvements
in connectors and is particularly concerned with a strap
connector.
Various components, such as modular building sections,
are frequently handled by cranes or the like which use cables
or straps with heavy and bulky hooks or the like on the ends
thereof. Such components must be provided with a rather
large space underneath and between them in order to pull out
the lifting line and hooks. The components must then be
brought together after the lifting lines are removed.
Obviously, any material spacing requires considerable extra
work in bringing the components into abutment for connection
and such comprises a disadvantage of systems that use hooks.
Another disadvantage of systems that use hooks or the like,
is that they frequently damage the components.
Straps have heretofore been used as lifting lines in
view of their versatility, namely, they are easy to handle,
they can be manufactured with great tensile strength, and
they do minimum damage to components around which they may be
engaged. Generally, these straps are provided in specific
lengths designed to accommodate specific components to be
lifted and have the undesirable opposite end hooks or the
like arranged for releasable connection to lifting mechanism.
~ .
:3~

667
--2--
Summary of the Invention
A primary objective of the invention is to provide
a connector for the releasable securement of one end of a
lifting strap thereto whereby the connector allows strapping
to ~e engaged with a component to be lifted and by its
structure allows the strap to have a free unobstructed end so
that the strap can be pulled free of the component through a
minimum space.
Another object of the invention is to provide a
10 connector of the type described which has a simplified struc-
ture, which is simple in operation, and which allows a
lifting assembly to handle components with substantially
one strap length.
In carrying out the objectives of the invention, the
connector comprises a body portion having opposite ends and
a hollow interior and including stationary anchor means in
the body portion arranged to receive a free strap end portion
capable of releasable securement thereto. The anchor means
is arranged to provide a support on which the free end por-
tion of the strap is pinched under a lifting portion thereofby a lifting force. Releasable pin means are provided in the
body portion and arranged for insertion in the loop of the
looped end of the strap for positioning the loop in its
pinched secured position on the body portion and for release
from said body portion when it is desired to disconnect the
strap from the connector. The body portion includes ratchet
' ~

t~ke-up shaft means arranged to take up e~cess of the free
strap end. The stationary anchor means ~referably com-
prises a cross bar having a knurled surface. The length o~
strap used with the connector may be of maximum length
whereby to handle substantially most components, any excess
strap merely being unused as a free end.
The invention will be better understood and additional
objects and advantages will become apparent from the
following description taken in connection with the accompany-
lO ing drawings
Brief Description of the Drawinqs
Figure 1 is an elevational view showing a function of
the invention, namely, providing a connection for a strap ln
a lifting operation for modular building sections;
Figure 2 is a perspective view of a connector embodying
features of the present invention;
Figure 3 is a side elevational view of the connector;
; Figure 4 is a view similar to Figure 3 but partly broken
away to show internal structure; and
Figurs 5 is a front edge view oE the connector.
Detailed Descri tion of a Preferred Embodiment
. P
With particular reference to the drawings, the numeral
10 designates the body portion of the present connector.
This connector is designed for use with conventional
25 strapping 12 arranged to have one end secured to a crane
operated lifting assembly 14. The assembly 14 has a spreader

--4--
16 to which is secured a lifting cable 18 in turn secured tothe present connector 10. Figure 1 shows as an e~ample the
present connector and strap 12 as well as lifting assembly 14
in conjunction with handling building modules 20, wherein
these modules are set in place in close relation. It is
to be understood, however, that the invention may be used
in connection with the handling of other components as well
such as containers, vehicles, etc.
Connector 10 comprises a pair of parallel side walls
20 defining an opening at the lower end and integrated into a
rugged structure by a top wall or connecting portion 22 and
one or more reinforcing cross rods 24. The top wall 22 has
an extension 26 for suitable connection to the lifting cable
18.
l~ A heavy duty cross bar 30 is secured between the side
walls 20 in an upper part of the body portion but in spaced
relation to the top wall 22. This bar is also spaced
between the edges of the side walls. The surface
32 of cross bar 30 is knurled for a reason to be described
hereinafter. Cross bar 30 also contributes to rugged
reinforcement of the walls 20.
Each of side walls 20 has an aperture 34. These
apertures are in alignment with each other and arranged to re- .
leasably receive a pin 36 capable of being locked in place
by a cotter 38. Apertures 34 are spaced from the bar 30 in a
direction toward the open or bottom end o~ the connector

and are also spaced between the side edges of the connector.
A strap take-up shaft 42 has journaled support in
extensions 44 extending from one edge of the side walls
at the bottom end of the connector. Shaft 42 has a diametral
slot 46 capable of slidably receiving the strap and has
selected controlled rotation by a ratchet mechanism 48
operative on the shaft.
Connector 10 can be integrally attached edgewise to a
rigid baseboard 52, as by connecting ears 54 on the side
walls 20. The opposite surface 56 of the baseboard from
the connector supported surface is cushioned.
In the operation of the present connector for
association with a component 20 to be lifted, it is
located by means of a crane operated assembly 14
adjacent the component, the cushioned surface 56 of the
baseboard 52 facing the component. The free end of the
strap is brought down the one side opposite from the
connector and under the component. It is then attached to
the connector as follows: With the slack in the strap
between the spreader 16 and the connector being manually
taken out, the free end of the strap, designated by the
reference character 12a in Figure 4 is doubled back on a
lifting portion 12b thereof. The doubled back portion
is made of a sufficient length such that it can extend
over the cross bar 30 with its looped portion, designated
by 12c, and at least down as far as the apertures 34.
' r ~

~.~Q¢~
--6--
At this time, the pin 36, which has been previously removed,
is then inserted in apertures 34 and through the loop 12c.
Also at this time or before if desired, the loose or free end
12a is threaded through the slot 46 in the take-up shaft.
The unused end of the strap will merely hang free. In the
process of pulling the unused end through the slot in the
take-up shaft, sufficient slack is left in the strap bet~een
the pin 36 and the take-up shaft such that at least two wraps
can be taken on the shaft whereby to provide a positive hold
of the strap on the shaft. The slac~ is then taken out of
this free span of the strap by ro-ating the shaft ratchet
with control.
The strap is provided with length indicia 58 thereon
giving the length of the strap from the connecting point
of the strap with the lifting assembly 12. Such can be used
as a guide in its engagement with the connector 10, for
example, when more than one strap is used, they can be
readily attached to the connector 10 at equal lengths.
As the connector is lifted by the crane and a load is
thus put on the lifting end 1~b of the strap, this portion of
the strap bears down on the free end of the strap and pinches
it against the cross bar 30, thus providing a positive
non-sliding frictional connection for said free ~nd. The
wrapping of the free end of the strap on the take-up shaft
insures a greater positive securement of the strap to the
connector but generally is not necessary for the hold on the

strap. Knurled surface 32 of the cross bar 30 proviAes a
good grip on the strap.
~ hen the component th~t is being handl3d has been set in
place, it is merely necessary ~o releas2 the free end of the
loosened strap from the take-up shaft and to remove the pin
3~. Since the free end of the strap does nat have any
obstruction thereon, it can be readily pulled out from under
; and up the side of the component. With the present system,
components ara capable of being set closely together and thus
readily r-moved into abutting relation in a final structur-
ing step. With the use of the present inventlon, a strap
can be of a length to accommodate substantially all com-
ponents to be handled since any excess strap length is
merely taken up in the connector as a free unused end.
It is to be understood that the form of my invention
herein shown and described is to be taken as a preferred
example of the same and that varous changes in the shape,
size and arrangement of parts may be resor-ed to without
departing from the spirit of my invention, or the scope
of the su~joined claims.

Dessin représentatif
Une figure unique qui représente un dessin illustrant l'invention.
États administratifs

2024-08-01 : Dans le cadre de la transition vers les Brevets de nouvelle génération (BNG), la base de données sur les brevets canadiens (BDBC) contient désormais un Historique d'événement plus détaillé, qui reproduit le Journal des événements de notre nouvelle solution interne.

Veuillez noter que les événements débutant par « Inactive : » se réfèrent à des événements qui ne sont plus utilisés dans notre nouvelle solution interne.

Pour une meilleure compréhension de l'état de la demande ou brevet qui figure sur cette page, la rubrique Mise en garde , et les descriptions de Brevet , Historique d'événement , Taxes périodiques et Historique des paiements devraient être consultées.

Historique d'événement

Description Date
Inactive : CIB désactivée 2011-07-26
Inactive : CIB de MCD 2010-02-01
Inactive : CIB dérivée en 1re pos. est < 2010-02-01
Inactive : CIB expirée 2010-01-01
Le délai pour l'annulation est expiré 1998-05-12
Lettre envoyée 1997-05-12
Accordé par délivrance 1992-05-12

Historique d'abandonnement

Il n'y a pas d'historique d'abandonnement

Titulaires au dossier

Les titulaires actuels et antérieures au dossier sont affichés en ordre alphabétique.

Titulaires actuels au dossier
DONALD D. RASMUSSEN
Titulaires antérieures au dossier
S.O.
Les propriétaires antérieurs qui ne figurent pas dans la liste des « Propriétaires au dossier » apparaîtront dans d'autres documents au dossier.
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Description du
Document 
Date
(aaaa-mm-jj) 
Nombre de pages   Taille de l'image (Ko) 
Abrégé 1993-11-04 1 15
Page couverture 1993-11-04 1 13
Revendications 1993-11-04 4 96
Dessins 1993-11-04 1 53
Dessins représentatifs 2003-03-19 1 19
Description 1993-11-04 7 233
Avis concernant la taxe de maintien 1997-08-04 1 179
Taxes 1996-05-07 1 35
Taxes 1995-05-02 1 41
Taxes 1994-04-25 1 35