Mounting apparatus for a rotational drive unit

Tool driving or impacting – Advance causing or controlling means

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Details

173147, 173148, E21C 506

Patent

active

053559657

ABSTRACT:
A mounting apparatus for a rotational drive unit. The rotational drive unit includes a socket portion which receives a truck or carrier. Opposing engagement surfaces of the carrier are separated by a distance greater than the length of the socket. The resulting lost motion connection allows for a range of free movement of the rotational head on the carrier.

REFERENCES:
patent: 2338625 (1944-01-01), Curtis
patent: 2868508 (1959-01-01), Cowan
patent: 3684035 (1972-08-01), Wills
patent: 3692123 (1972-09-01), Gyongyosi
patent: 3721305 (1973-03-01), Mayer et al.

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