Overload coupling for protecting drive trains especially on agri

Details Overload coupling for protecting drive trains especially on agri Overload coupling for protecting drive trains especially on agri

1987-10-14

1989-02-07

Weiss, John

Harvesters

Motorized harvester

With condition-responsive operation

464 37, A01O 7518, F16D 704

Patent

active

048023264

ABSTRACT:
An overload coupling for the protection of drive trains on machines, particularly agricultural machines powered by a tractor, protects against overloading in at least one rotational direction. A coupling sleeve is mounted for rotation around a coupling hub of the overload coupling. Relative rotation between the hub and sleeve is about a coupling axis. A plurality of circumferentially spaced recesses are provided in the coupling hub which each contain a rotatably mounted rotor. The rotors are mounted about their own rotor axes which are parallel to but spaced apart from the coupling axis. Each rotor contains a radially movable driver cam which is spring-loaded and has cam surfaces for engaging detent grooves in the sleeve. With the driver cams engaged in the detent grooves, relative rotation between the hub and sleeve is resisted. By shaping the cam surfaces and adjacent abutment surfaces of the driver cams, the direction and force of disengagement can be set between the coupling hub and coupling sleeve.

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patent: 2738847 (1956-03-01), Tomik et al.
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patent: 4240514 (1980-12-01), Van der Lely
patent: 4261453 (1981-04-01), Kunze
patent: 4417650 (1983-11-01), Geisthoff
patent: 4437553 (1984-03-01), Geisthoff
patent: 4566570 (1986-01-01), Geisthoff
patent: 4653623 (1987-03-01), Demorest

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