Work holders – Operator supported – Handle manipulation for jaw actuation
Patent
1997-11-23
2000-11-28
Eley, Timothy V.
Work holders
Operator supported
Handle manipulation for jaw actuation
254114, 254116, 254 93H, B25B 100
Patent
active
061524344
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The invention pertains to a holder for objects with the features described in claim 1.
A holder for objects such as ceiling tile, roof battens, machine parts or the like consisting of at least two telescoping pipes where a first pipe is shiftable in relation to the second pipe by a first distance and having a gas pressure spring to transport the first pipe in relation to the second pipe by a further distance and where an arrest device for the pipes against each other is wellknown (unpublished German patent application 195 29 989). With this holder, plaster tile can be held at the ceiling until they are fastened by screws or nails. In this instance, it is a disadvantage that the gas spring must be pressed against the held object in order to remove the holder and that the holding must be always be done with the same force.
It is the task of this invention to create a holder as described above that allows simple releasing and can be regulated in certain steps by the holding force.
This task is accomplished with the features described in claim 1.
Exemplary embodiments and advantages designs of the invention are comprised in the subsequent claims.
Under the invention, the means for the further transport of the first pipe consist of an advancing device such as a ratchet, a toothed rod, clamp holder or the like to be operated manually. The first pipe can also be a round, square or flat rod. For reasons of simplicity, two pipes are referenced in the following.
In a first embodiment of the invention, a gas pressure spring or a helical spring is arranged in and connected with the second pipe for the transport of the first pipe on the first distance. The first distance brings the stopper to contact the object to be held. The distance is then traversed as mentioned above by activating the advancing means; the distance is short and is intended for attaching the object at a ceiling, for example. To this end, a gripper is firmly attached to the upper end of the second pipe at or in which the advancing, holding and/or clamping means for the ratchet, toothed rod, clamp holder or the like are arranged.
In a first embodiment of the invention, a handle, a stopper or the like in compressed state can be mounted on the gripper for holding the gas pressure or screw spring. In this embodiment, the handle is first released, and the first pipe runs out of the second pipe up to the stopper. The further distance is then traversed, as described in the second embodiment of the invention, by activating the advancing means.
In another embodiment of the invention, the first pipe is first pulled by hand out of the second pipe and the gripper. The friction resistance of the clamping and holding device at the gripper must be overcome or annulled; the advancing devices are activated for the further transport.
It is advantageous when the end stoppers are plates on ball joints or the like. The plates should be removable and can be exchanged by other holding device such as grids or crosses. Other holding device attached to the first pipe can be used that prevent tipping or sloping of the ball joint.
In a preferred exemplary embodiment of the invention, the second pipe telescopes in a third pipe where devices exist to hold the two pipes against one another. The first pipe or the rod telescope in the second pipe where automatic devices for the first transport distance of the first pipe or the rod are arranged and where a hand activated gripper with clamping and advancing devices for a second transport device of the first pipe or the rod are mounted. In the preferred embodiment, the advancing device may be a device such as a ratchet, a toothed rod, clamp holder or the like. A gas pressure spring or helical spring is preferably located in and connected with the second pipe for the transport of the first pipe or the rod. In one embodiment the devices for a further transport of the first pipe or the rod are arranged at or in the second pipe.
In a third embodiment of the invention, a first spring loaded clamp holder for the first pipe or th
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patent: 3930645 (1976-01-01), Anderson
patent: 4084792 (1978-04-01), Baron et al.
patent: 4641815 (1987-02-01), Yu
patent: 4695028 (1987-09-01), Hunter
patent: 4928916 (1990-05-01), Molloy
Eley Timothy V.
Halpern Benjamin M.
McDonough Thomas C.
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