Butchering – Slaughtering – Stunning
Patent
1997-04-10
1998-11-17
Ramirez, Ramon O.
Butchering
Slaughtering
Stunning
A22B 302
Patent
active
058368116
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a suspension device intended to provide a universally movable support for a pneumatic power tool.
In particular, the invention concerns a suspension device for a pneumatic power tool having a housing with a pistol grip handle. The suspension device comprises an arc-shaped yoke and a slip member which is movably guided on the yoke and connectable to an overhead balancing device.
BACKGROUND OF THE INVENTION
Devices of the above described type are previously known, for example through GB 2,213,757 and FR 2,509,424.
The device shown in GB 2,213,757 is adapted to a pistol type pneumatic tool which in a conventional manner has its pressure air conduit connection located to the outer end of the handle. In tools like this, there is a practical problem to arrange the pressure air supply conduit such that it does not interfere with the handling of the tool and/or the operator's movement pattern.
The most desirable way to get the air supply hose out of the way is to direct it upwards to an overhead pressure air main connection. This, however, is not a satisfactory solution to the hose handling problem of the device shown in GB 2,213,757, because in the normal or most common operating position of the illustrated tool, the handle is directed downwards as is the air hose connection. Leading the air hose upwards to an overhead connection point would still cause an awkward handling of the tool.
The device described in FR 2,509,424 comprises a tube-shaped yoke which forms part of the pressure air supply conduit. The tool illustrated in connection with this known suspension device is of a special design with two lateral swivel connections for the suspension yoke. This known device is advantageous in that it enables a favorable air hose arrangement, but suffers from the drawback of being expensive and limited in use to a specially designed power tool.
OBJECT OF THE INVENTION
In contrast to both of the two above described prior art devices, it is an object of the present invention to provide a structurally simple air tool suspension device which is usable with standard type pistol grip power tools, and which not only provides a universal movability of the tool, but enables an out-of-the-way location of the pressure air hose.
BRIEF DESCRIPTION OF THE DRAWINGS
Further characteristics and advantages of the invention will appear from the following specification and claims.
A preferred embodiment is below described in detail with reference to the accompanying drawings.
FIG. 1 shows a front view of a suspension device according to the invention.
FIG. 2 shows a top view of the device in FIG. 1.
FIG. 3 shows a side view of the device in FIG. 1.
FIG. 4 shows, on a larger scale and partly in section, a fractional view of the device in FIG. 1.
FIG. 5 shows a front view of a suspension device according to an alternative embodiment of the invention.
DETAILED DESCRIPTION
The suspension device shown in FIGS. 1-4 is for use in supporting of a standard type pneumatic power tool, particularly a power wrench, comprising a housing 10 with a pistol grip handle 11. A motor located in the housing 10 is supplied with motive pressure air through an inlet connection 12 at the outer end of the handle 11 and exhausts air through an outlet diffusor 13 also located at the outer end of the handle 11. The motor operation is controlled by a throttle valve 14, and a square ended output shaft 15 is intended to carry a nut socket for engagement with a screw joint to be tightened.
The inlet connection 12 comprises a right angle swivel joint 17 which includes a threaded nipple 18 for mounting in a threaded socket portion 19 in the handle 11 and a banjo type inlet part 20. The latter is rotatably supported on the nipple 18 and is formed with a threaded socket 21 for connection of an air supply hose 22.
As shown clearly in FIG. 4, the nipple 18 is formed with a central passage 24 and a couple of lateral openings 25 for communication with the socket 21 of the inlet part 20. The nipple 18 also comprises two annular shoulders 26,
REFERENCES:
patent: 4451952 (1984-09-01), Herubel
patent: 5356188 (1994-10-01), Maloberti et al.
patent: 5580021 (1996-12-01), Gillanders
Atlas Copco Tools AB
Phan Long Dinh
Ramirez Ramon O.
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