Brakes – With condition indicator – Electrical
Patent
1993-12-09
1995-09-19
Butler, Douglas C.
Brakes
With condition indicator
Electrical
116208, 3242072, 32420724, 340454, 92 63, F16D 6600
Patent
active
054509300
ABSTRACT:
Electronic stroke indicators have sensor structures which are incorporated into a stone shield for a brake actuator. The incorporation of the sensor into the stone shield protects the sensor and its associated wires and contacts from damage by the other components in the brake actuator. In particular, the spring is typically maintained out of contact with any of the electric portions of the electronic stroke indicator, thus prolonging the life of the electronic stroke indicator. In further features of this invention, a magnetic sensor may monitor the position of magnetic portions on a piston rod. Alternatively, a pair of electric contact switches may be serially contacted by a structure on the piston rod as the brake moves further out of stroke. The two electric contacts provided different signals to an operator in a vehicle cab such that signals of the level of out-of-stroke conditions are provided to the operator. In a further embodiment, a load cell monitors the compression in a spring in the brake housing to provide an indication of an out-of-stroke condition.
REFERENCES:
patent: 2873436 (1959-02-01), Avrea
patent: 2912536 (1959-11-01), Hoch
patent: 3654549 (1972-04-01), Maurer et al.
patent: 3730056 (1973-05-01), Swander, Jr.
patent: 3776329 (1973-12-01), Hope et al.
patent: 3808593 (1974-04-01), Kopernik et al.
patent: 4188605 (1980-02-01), Stout
patent: 4279214 (1981-07-01), Thorn
patent: 4364305 (1982-12-01), Dalibout et al.
patent: 4471304 (1984-09-01), Wolf
patent: 4583071 (1986-04-01), Sebalos et al.
patent: 4642603 (1987-02-01), Martinez, Jr.
patent: 4649370 (1987-03-01), Thomason
patent: 4757300 (1988-07-01), Sebalos
patent: 4800991 (1989-01-01), Miller
patent: 4855712 (1989-08-01), Wiley, Jr. et al.
patent: 4883150 (1989-11-01), Arai
patent: 4989537 (1991-02-01), Hutchinson, Sr. et al.
patent: 5044302 (1991-09-01), Goldfein et al.
patent: 5140932 (1992-08-01), Goldfein et al.
patent: 5178092 (1993-01-01), Schedin
patent: 5213056 (1993-05-01), Nicholls et al.
patent: 5226509 (1993-07-01), Smith
patent: 5253735 (1993-10-01), Larson et al.
patent: 5285190 (1994-02-01), Humphreys et al.
patent: 5339069 (1994-08-01), Penner et al.
patent: 5358075 (1994-10-01), Jarzombek
patent: 5392691 (1995-02-01), Schultz
Hicks Robert J.
Hilding Robert J.
Martens Timothy F.
Butler Douglas C.
MGM Brakes
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