Force limiting device

Details Force limiting device Force limiting device

1980-04-11

1982-03-09

Staab, Lawrence J.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74412TA, F16H 2702, F16H 2920

Patent

active

043183042

ABSTRACT:
The invention relates to a force limiting assembly that includes a force transmitting reciprocating output member carried by an actuator member mounted at one end for rotation in a force limiting assembly housing. A power input member is secured to the actuating member in the housing. The assembly is provided with a release mechanism secured to the assembly housing and mechanically releasably secured to the actuating member to thereby permit the actuating member to move axially into the housing. The axial movement into the housing occurs only when an axial force present in the actuating member, which force is directed towards the housing, exceeds a preset value which results in the sudden release and movement of the actuating member and the power input member into locking cooperation with a portion of the assembly housing. While the power input member is in locking cooperation with the housing, no further input power may be transmitted from the power input member to the actuating member and the force transmitting output member. The release mechanism additionally allows the actuating member and the input member to have limited movement in a direction along the actuating member away from the housing whenever a predetermined force is applied to the actuating member in the direction away from the housing. The input member, when experiencing the movement in a direction away from the housing, cooperatively mechanically locks with a portion of the housing, whereupon no further input power may be transmitted from the power input member to the actuating member and the force transmitting output member.

REFERENCES:
patent: 3269199 (1966-08-01), Deehan et al.
patent: 3634002 (1972-01-01), Vollrath
patent: 3802281 (1974-04-01), Clarke
patent: 3968705 (1976-07-01), Amano et al.
patent: 3994178 (1976-11-01), Hore
patent: 4184345 (1980-01-01), Cutler

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