Brakes – Elements – Shoes
Patent
1991-04-09
1992-06-23
Dean, R.
Brakes
Elements
Shoes
188250R, 188251A, 188262, 4274197, 428660, 428926, 428932, 428938, 148529, 148537, C21D 900
Patent
active
051239728
ABSTRACT:
An improved hardened insert and brake shoe adapted for use in bi-directional backstopping clutches is disclosed. The inserts are formed from a base material of high speed alloy tool steel, which is relatively inexpensive and easy to machine. The base material is formed into the desired shape for the insert, then hardened and tempered by conventional processes to achieve a desired hardness. Then, a coating of titanium nitride is applied to the insert by a physical vapor deposition process or a chemical vapor deposition process. The titanium nitride coating provides a very hard surface to the insert, which permits the insert to be used in the backstopping clutch. In an alternative embodiment, the brake shoes are formed in the manner described above, and no inserts are used in the clutch.
REFERENCES:
patent: 1923814 (1931-08-01), Egan
patent: 1940333 (1931-10-01), Squires
patent: 2142139 (1939-01-01), Machlet
patent: 2784639 (1957-03-01), Keenan et al.
patent: 2946708 (1960-07-01), Berghaus et al.
patent: 3194694 (1965-07-01), Satoh
patent: 3264135 (1966-08-01), Wakelyn et al.
patent: 3282746 (1966-11-01), Zlotek et al.
patent: 3416976 (1968-12-01), Brill-Edwards
patent: 3497044 (1970-02-01), Kalns
patent: 3656995 (1972-04-01), Reedy, Jr.
patent: 3677832 (1972-07-01), Van Thyne et al.
patent: 3713906 (1973-01-01), Van Thyne et al.
patent: 3765954 (1973-10-01), Tokuda et al.
patent: 3959557 (1976-05-01), Berry
patent: 4162338 (1979-07-01), Schintlmeister
patent: 4337300 (1982-06-01), Itaba et al.
patent: 4351861 (1982-09-01), Henery
patent: 4359493 (1982-11-01), Henery
patent: 4447263 (1984-05-01), Sugizawa et al.
patent: 4481264 (1984-11-01), Faure
patent: 4511411 (1985-04-01), Brunner et al.
patent: 4582679 (1986-04-01), Wilson et al.
patent: 4654232 (1987-03-01), Sayano
patent: 4670024 (1987-06-01), Bhat et al.
patent: 4707238 (1987-11-01), Okubo
patent: 4781989 (1988-11-01), Yoshimura et al.
patent: 4800105 (1989-01-01), Nakayama et al.
patent: 4846899 (1989-07-01), Wilson
patent: 4902359 (1990-02-01), Takeuchi et al.
patent: 4902535 (1990-02-01), Garg et al.
Dana Corporation
Dean R.
Koehler Robert R.
LandOfFree
Hardened insert and brake shoe for backstopping clutch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hardened insert and brake shoe for backstopping clutch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hardened insert and brake shoe for backstopping clutch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-930615