192 clutches and power-stop control – Clutch and brake – Sliding operation
Patent
1977-09-12
1980-03-25
Herrmann, Allan D.
192 clutches and power-stop control
Clutch and brake
Sliding operation
188 1A, 192 30W, 192 8717, F16D 6704, F16D 6600
Patent
active
041946065
ABSTRACT:
The specification discloses a clutch and brake system wherein low and high speed clutch assemblies are mounted about a rotatable shaft. A brake assembly is disposed between the low and high speed clutch assemblies and includes friction surfaces mounted about the shaft. The brake assembly is normally biased to an engaged position to prevent rotation of the shaft. A housing is disposed about the brake assembly and annular pistons are slidably mounted in the housing on opposite sides of the brake assembly. The pistons are operable in response to fluid pressure to selectively disengage the brake assembly while engaging a selected one of the clutch assemblies. Structure is provided to interconnect the pistons to prevent simultaneous engagement of both the clutch assemblies. Structure is also provided to sense a temperature above a predetermined level in the pistons in order to cause deenergization of the clutch and brake system. Structure is also provided to detect a predetermined amount of wear of the friction surfaces of the brake assembly and for alerting the operator to such wear.
REFERENCES:
patent: 2009031 (1935-07-01), Rode et al.
patent: 2441543 (1948-05-01), Longfeild
patent: 2844782 (1958-07-01), Wentworth
patent: 2919778 (1960-01-01), Aschauer
patent: 3595353 (1971-07-01), Beneke
patent: 3802257 (1974-04-01), Jorenda et al.
patent: 3887040 (1975-06-01), Simon et al.
patent: 3931727 (1976-01-01), Luenser
patent: 3975706 (1976-08-01), Kato
patent: 4051933 (1977-10-01), Beneke et al.
Herrmann Allan D.
Verson Allsteel Press Company
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