Wrap spring clutch for percussive apparatus

Details Wrap spring clutch for percussive apparatus Wrap spring clutch for percussive apparatus

1992-07-14

1993-03-09

Yost, Frank T.

Tool driving or impacting

Impacting devices

Hammer head moves in arcuate path or rotates

173111, 192 41S, B25D 1600

Patent

active

051919460

ABSTRACT:
A clutch assembly transmits rotary motion in a percussive apparatus to a drill steel. The clutch assembly includes a first hub having a first cylindrical surface formed thereon. A second hub which is substantially rotationally coupled to the drill steel has a second cylindrical surface formed thereon. The second cylindrical surface is coaxial with the first cylindrical surface. A wrap spring engages a portion of both the first cylindrical surface and the second cylindrical surface, wherein relative rotary motion between the first hub and the second hub is permitted in a first direction and restricted in a second direction. The wrap spring clutch transmits motion supplied from a rifle bar assembly as well as a plunger bar arrangement.

REFERENCES:
patent: 1934252 (1933-11-01), Baker
patent: 2566539 (1951-09-01), Starkey
patent: 2700373 (1955-01-01), Feucht
patent: 2910046 (1959-10-01), Lear
patent: 2979925 (1961-04-01), Hungerford, Jr.
patent: 3166131 (1965-01-01), Worman
patent: 3463246 (1969-08-01), Bronnert

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