Tool driving or impacting – Impacting devices
Patent
1994-04-22
1995-03-21
Smith, Scott A.
Tool driving or impacting
Impacting devices
173202, B25D 100
Patent
active
053987730
ABSTRACT:
An access tool for smashing against a door knob of a door is describe and comprises a pair of telescoping cylinders. The outer guiding cylinder includes a side wall concentric of an axis of symmetry. A hoisting handle of U-shaped cross section is attached at one end of the outer cylinder (the hoisting handle including a pair of transverse legs having openings near the termini thereof) using a bolt-nut combination. The bolt includes a bolt shank extending through a pair of diametrically opposed openings in the side wall of the outer cylinder and thence through the openings in the transverse legs of the handle, whereby achieving pivotable attachment of the hoisting handle. The inner cylinder also includes a side wall that differs from that of the outer cylinder in that a stepped end wall is provided in the mid-region thereof. The stepped end wall includes a central opening for receiving an anvil bolt. A compression spring is positioned within the cylinders on a side opposite the anvil bolt in contact with the stepped end wall of the inner cylinder and the bolt shank of the hoisting handle wherein rectilinear movement of the inner cylinder in a direction toward the bolt shank, causes compression of the spring to provide a "cocked" action state for the cylinders. A unitary trigger mechanism and carrying handle is attached to the outer cylinder near a mid-region thereof for manipulation of the tool and for disconnectably connecting the outer and inner cylinders so as to provide both a locking state and to provide a release state.
REFERENCES:
patent: 3071994 (1963-01-01), Swenson
patent: 3483727 (1969-12-01), Giannetto
patent: 3792739 (1974-02-01), Deike
patent: 4681171 (1987-07-01), Kee
patent: 5329685 (1994-07-01), Gillespie
Messner Harold D.
Smith Scott A.
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