CRIMPING TOOL

OUTIL DE SERTISSAGE

English Abstract

The present invention provides a tool being used to crimp a ring onto
a pipe joint, which includes two half-die members having each bore
openings and a recess formed at their rear end portion for receiving a
body member to be connected therewith by dowell pins, and further
at their front end portion is formed a recess for receiving a threaded
rod coupled to a clamp bolt. The threaded rod is engaged therein a
threaded bore formed thereon a bushing passing through two bores
located thereof each side of the lower half-die member.
The clamp bolt is blocked therein the bushing by a spring pin to be
engaged therethrough a hole formed therewith and through a hole
formed therein the threaded rod.
Further, the both half-die members are disposed in alignment with
the bore openings for receiving the ring that is crimped onto the pipe
joint by the use of a handle having at each end portion a notch to
prevent the handle to be pulled out of the clamp bolt.

Claims

CLAIMS:
The embodiments of the invention for which an exclusive property or
privilege is claimed, are defined as follows:
I claim:
1. A tool being used to crimp a ring onto a pipe joint, wherein said
tool comprising:
two half-die members having each bore openings;
a recess formed at their rear end portion for receiving a body
member to be connected therewith by dowell pins;
a recess formed at their front end portion for receiving a threaded
rod coupled to a clamp bolt,
wherein said threaded rod is engaged therein a threaded bore
formed thereon a bushing passing through two bores formed thereof
each side of the lower half-die member, and
wherein said clamp bolt is blocked therein the bushing by a spring
pin to be engaged therethrough a hole formed therewith and through
a hole formed therein the threaded rod.
2. A tool as defined in claim 1 wherein the half-die members are
disposed in alignment with the bore openings for receiving the ring
that is crimped onto the pipe joint by the use of a handle having at

each end portion a notch to prevent the handle to be pulled out of the
clamp bolt.
3. A tool as defined in claim 1 characterized in that said tool has
three bore openings.
4. A tool as defined in claim 1 wherein a first bore opening is
characterized in that its diameter is of 288 mm.
5. A tool as defined in claim 1 wherein a second bore opening
is characterized in that its diameter is of 344 mm.
6. A tool as defined in claim 1 wherein a third bore opening is
characterized in that its diameter is of 463 mm.
7. A tool as defined in claim 1 wherein the clamp bolt includes at
its upper end portion an hexagonal-head to be used with a key or
ratchet.
8. A tool as defined in claim 1 characterized in that a washer is
mounted to said clamp bolt for protecting the top face of the upper
half-die member.
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Description

CA 02553144 2006-07-21
Crimping Tool
BACKGROUND OF THE INVENTION
Field of the invention
More particularly, the present invention relates generally to a tool
which can be hand held and used to crimp a ring onto a pipe joint.
Description of the related art
A search of prior art records has unveiled the following patents:
1. US 2,891,598 issued in 1959 to Stanley;
2. US 2,526,210 issued in 1949 to Edelmann;
3. US D 400,893 issued in 1998 to Peterson;
4. US 3,191,420 issued in 1963 to Wilson;
5. US 4,192,171 issued in 1980 to Hamilton;
6. US 4,266,420 issued in 1981 to Walker;
7. US 4,982,594 issued in 1991 to Wiebe;
8. US 5,063,770 issued in 1991 to Chen;
9. US 5,094,097 issued in 1992 to Tooth;
10. US 5,280,716 issued in 1994 to Ryan;
11. US 5,267,464 issued in 1993 to Cleland; and
12. US D 341,303 issued in 1993 to Davis.
It is therefore an object of the present invention to provide a tool
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CA 02553144 2006-07-21
which can be hand held and used to crimp a ring onto a pipe joint.
Summary of the invention:
According to the present invention, there is described a tool being
used to crimp a ring onto a pipe joint, which includes two half-die
members having each bore openings and a recess formed at their
rear end portion for receiving a body member to be connected
therewith by dowell pins, and further at their front end portion is
formed a recess for receiving a threaded rod coupled to a clamp bolt.
The threaded rod is engaged therein a threaded bore formed thereon
a bushing which passes through two bores located thereof each side
of the lower half-die member.
The clamp bolt is blocked therein the bushing by a spring pin to be
engaged therethrough a hole formed therewith and through a hole
formed therein the threaded rod.
Further, the both half-die members are disposed in alignment with
the bore openings for receiving the ring that is crimped onto the pipe
joint by the use of a handle having at each end portion a notch to
prevent the handle to be pulled out of the clamp bolt.
And further, the clamp bolt includes at its upper end portion an
exagonal-head to be used with a key or ratchet if needed.
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CA 02553144 2006-07-21
And finally, a washer is mounted to the clamp bolt for protecting the
top face of the upper half-die member.
Brief description of the several views of the drawing(s):
The invention will now be described by way of example with
reference to the accompanying drawings, in which:
Figure 1 is a plan view illustrating the improved crimping tool;
Figure 2 is a side view illustrating the crimping tool in the open
position; and
Figure 3 is an exploded view showing the components in position for
assembly.
Detailed description of the invention:
Now referring to the accompanying drawings, and in particular to figs.
1 to 3, there is shown a tool being used to crimp a ring onto a pipe
joint, which includes two half-die members (1)(2) having each bore
openings (8) and a recess (7) formed at their rear end portion for
receiving a body member (3) to be connected therewith by dowell
pins (4) therein holes (6), and further at their front end portion is
formed a recess (12)(13) for receiving a threaded rod (17) coupled to
a clamp bolt (19). The threaded bolt (17) is engaged therein a
threaded bore (10) formed thereon a bushing (9) passing through two
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bores (11) formed thereof each side of the lower half-die member (2).
The clamp bolt (19) is blocked therein the bushing (9) by a spring pin
(15) to be engaged therethrough a hole (14) formed therewith and
through a hole (16) formed therein the threaded rod (17).
Further, the both half-die members (1)(2) are disposed in alignment
with the bore openings (8) for receiving the ring that is crimped onto
the pipe joint by the use of a handle (22) having at each end portion
a notch (23) to prevent the handle passing through holes (21) of the
clamp bolt (19) to be pulled out.
And further, the clamp bolt (19) includes at its upper end portion an
hexagonal-head (20) to be used with a key or ratchet if needed.
And finally, a washer (18) is mounted to the clamp bolt (19) for
protecting the top face of the upper half-die member (1).
Accordingly, while the preferred embodiments of the invention have
been described above, it will be recognized and understood that
various modifications may be made in the invention and the
appended claims are intended to cover all such modifications which
may fall within the spirit and scope of the invention.
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Representative Drawing