Disc brake with variable width caliper

Details Disc brake with variable width caliper Disc brake with variable width caliper

1991-11-07

1992-11-10

Oberleitner, Robert J.

Brakes

Wheel

Axially movable brake element or housing therefor

188 719, 188196D, F16D 55227

Patent

active

051616483

ABSTRACT:
The disc brake (100) with variable width caliper comprises first and second bridge members (14, 15) which are connected with a pair of movable members (20, 30) extending over the periphery of the rotor (51). Each of the movable members (20, 30) is mounted upon an anchor extension (37A, 38A). An inboard end of each movable member (20, 30) includes threads (26, 36) upon which is threadably mounted a nut (28, 29). The nut (28, 29) has rachet teeth (12, 13) on one axial end which engage rachet teeth (10A, 11A) of an associated actuator sleeve (10, 11) disposed slidably about the movable member (20, 30). The second bridge member (15) is mounted slidably upon the movable members (20, 30). The actuator sleeves (10, 11) may be rotated by an actuator mechanism (70) which, through the engaged rachet teeth (10A, 11A; 12, 13), causes the nuts (28, 29) to rotate and effect translational movement of the movable members (20, 30). The actuator sleeves (10, 11) engage roller thrust bearings (44, 45) which, as the nuts (28, 29) change their positions along the movable members (20, 30), displace the second bridge member (15) and a friction lining mechanism (16) against the rotor (51), and by reaction, the movable members (20, 30) bring a friction lining mechanism (17) of the first bridge member (14) into engagement with the other face of the rotor (51). The second bridge member (15) may include one or more bores (50) each receiving therein a piston (52) and actuatable by hydraulic fluid.

REFERENCES:
patent: 3323618 (1967-06-01), Riddy
patent: 3517783 (1970-06-01), Belavt
patent: 3835960 (1974-09-01), Moss
patent: 3851737 (1974-12-01), Hewins
patent: 4014411 (1977-03-01), Troester
patent: 4030576 (1977-06-01), Pringle
patent: 4031985 (1977-06-01), Ito
patent: 4355708 (1982-10-01), Papagni
patent: 4487295 (1984-12-01), Mitchell
patent: 4540066 (1985-09-01), Evans
patent: 4776439 (1988-10-01), Tickle et al.
patent: 4838078 (1989-05-01), Matsumoto
patent: 5000294 (1991-03-01), Hunnicutt et al.
patent: 5086885 (1992-02-01), Bowsher

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