192 clutches and power-stop control – Clutches – Torque responsive
Patent
1987-02-11
1988-08-02
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Torque responsive
192150, F16D 4320
Patent
active
047609044
ABSTRACT:
Apparatus for limiting torque to a drive line upon rotation in one direction. A rotor is connected to a rotational device within a housing selectively connected to a control for a source of rotational force for operation and cessation thereof. The rotor has a pivoted pawl which mates with an elongated groove in the housing. The pivoted pawl freely pivots in one of two directions but is prevented, by a pin, from rotating in the other direction. A small compression spring on each side of the pawl causes the pawl to re-center in the groove and permits the housing dimensions to be halved as compared to those accomodating a single, high force spring. The rotor has a pair of cam surfaces which contact a plurality of spring loaded push rods in the housing. In operation, the rotor and the housing rotate together about a common axis in either direction. However, when torque loading is imposed during rotation in a first direction, the pawl pivots and moves out of engagement with the housing groove. The rotor then rotates relative to the housing and the cam surfaces rotate and displace the push rods causing a sliding collar to activate the control for disconnecting torque to the drive line. Upon rotation of the drive line in the opposite direction, the pawl is prevented from pivoting by the pin and remains in the housing groove despite imposition of torque in excess of that causing disconnection with the drive line rotating in the opposite direction.
REFERENCES:
patent: 1669225 (1928-05-01), Bayles
patent: 1920017 (1933-07-01), McClatchie
patent: 2253466 (1941-08-01), Grohn
patent: 2601799 (1952-07-01), Garwood
patent: 3124227 (1964-03-01), Helland et al.
patent: 3893553 (1975-07-01), Hansen
patent: 4255946 (1981-03-01), Hansen
patent: 4593800 (1986-06-01), Ness et al.
patent: 4605111 (1986-08-01), Ohno et al.
Bernard Brian C.
Heiskell Ronald E.
Bonck Rodney H.
Krauss Warren J.
The Clorox Company
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