192 clutches and power-stop control – Clutches – Torque responsive
Patent
1974-10-29
1976-01-13
Scott, Samuel
192 clutches and power-stop control
Clutches
Torque responsive
192 4891, 192 7023, 192 93A, F16D 700
Patent
active
039318745
ABSTRACT:
A generally cylindrical supporting body rigid with a rotating drive shaft carries an axially slidable sleeve controlling the selective entrainment of a pair of flanking gears through respective clutches interposed between these gears and the body, each clutch comprising an annular pressure plate limitedly rotatable and axially slidable with reference to the body. Rollers journaled on radial pins along the periphery of the supporting body coact with respective cam tracks of the plate surfaces to urge either of these plates toward the adjoining gear, thereby engaging the interposed clutch, upon retardation of the plate with reference to the body by incipient contact of the corresponding clutch elements. The sleeve has substantially T-shaped grooves receiving, with play, camming heads on the pressure plates which help realign a lagging pressure plate with the supporting body upon restoration of the control sleeve to a neutral position, thereby facilitating release of the clutch; the cam track is arcuately curved to decrease the ratio of torque intensification on the engagement stroke and, in turn, to facilitate initiation of the disengagement stroke by an axial shift of the sleeve until the camming heads on the pressure plates go into action.
REFERENCES:
patent: 2081824 (1937-05-01), Lambert
patent: 2658593 (1953-11-01), Doebeli
patent: 2827994 (1968-03-01), Tiedeman et al.
patent: 3118292 (1964-01-01), Schroter et al.
patent: 3203525 (1965-08-01), Herbst
patent: 3703226 (1972-11-01), Strehler
Braun Siegfried
Herbst Fritz
Dubno Herbert
Heald Randall
Ross Karl F.
Scott Samuel
Zahnradfabrik Friedrichshafen AG
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