Shock absorbing overtravel stop

Details Shock absorbing overtravel stop Shock absorbing overtravel stop

1988-01-25

1989-09-19

Bonck, Rodney H.

192 clutches and power-stop control

Stop mechanism

Limit stop

74 8915, 192143, F16D 6514, F16D 7100

Patent

active

048672955

ABSTRACT:
A shock absorbing overtravel stop apparatus which includes a rotatable drive shaft 10, a screw shaft 15 driven by the drive shaft 10, and a nonrotatable travelling nut 30 threaded on and moveable axially along the screw shaft 15. At one end 28 of the screw shaft 15, the apparatus is provided with a rotating stop 38 and a stationery stop 40. At the other end 20 of the screw shaft 15, there is provided a bearing housing 21, journalling the screw shaft 15 for rotation and mounting the screw shaft for axial movement along the axis. The travelling nut 30 is moveable in one direction to engage the stops 38, 40 whereupon the rotary motion of the screw shaft 15 is terminated. The travelling nut 30 is also moveable in the other direction into contact with the bearing housing 21 to exert an axial force upon the screw shaft 15 such that the screw shaft 15 moves axially to engage the stops 38, 40 whereupon the rotary motion of the screw shaft 15 is terminated. The screw shaft 15 of the present invention acts as a torsion shock absorber upon the termination of the rotary motion of the screw shaft 15 by the stops 38, 40.

REFERENCES:
patent: 2868030 (1959-01-01), Forwald
patent: 3221118 (1965-11-01), Hoover
patent: 3326054 (1967-06-01), Canick et al.
patent: 4064981 (1977-12-01), House et al.
patent: 4318304 (1982-03-01), Lang
patent: 4641737 (1987-02-01), Gillingham et al.
patent: 4721196 (1988-01-01), Layer et al.

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