US 2003/0156923 A1 · Indexing plunger

Abstract

An indexing plunger is provided whereby a first downward force exerted on a hand grip or a lever will move a pin assembly downwardly and whereby a second rotating force exerted on the hand grip or the lever either clockwise or counterclockwise will lock the device into place by extending the locating pin and thereby locking it into place using the compression force exerted by an internal spring. This embodiment can assume a number of different physical configurations. In another preferred embodiment, the object is to provide an indexing plunger that moves the locating pin incrementally downwardly through the housing when the handgrip is rotated in the clockwise direction. At all times during the pin's downward movement, a compression spring maintains an opposing force on the handgrip.

Claims21

Dependent claims

An indexing plunger comprising

a handgrip,
a housing having at least one sidewall and an aperture defined within said at least one sidewall,
a compression spring,
a generally cylindrical locating pin resting on said compression spring within the housing, said locating pin having a top portion that is attachable to said handgrip,
a lock pin,
wherein the spring permits compression such that the lock pin is movable within the housing aperture.

3 more elements

Dependencies are inferred from the claim text.

Indexing plunger

Life of this patent

Indexing plunger

Life of this patent

Abstract

Claims21