Spring devices – Elastic extension devices – Compression spring
Patent
1982-04-16
1987-04-14
Halvosa, George E. A.
Spring devices
Elastic extension devices
Compression spring
213 40R, 248600, 267 72, 267169, 267170, F16F 110
Patent
active
046572309
ABSTRACT:
An overtravel spring assembly including a helical-type spring secured in a cylindrical housing in a prestressed state between retaining washers inserted adjacent the opposite ends of the housing. The spring is coaxially disposed in the assembly between the inner surface of the housing and the outer surface of a sleeve member inserted within the spring, thereby retaining the spring in a symmetrically coiled state, that is, preventing radial distortion or buckling of the spring spring when subjected to operating stress. The entire spring assembly is retained in its assembled state by radially crimping the opposite ends of the housing against the outer radial surfaces of the retaining washers. The overtravel spring assembly is used in an automatic slack adjuster for vehicle brakes for measuring the extent of overtravel of the piston rod due to excessive wear of the brake shoes.
REFERENCES:
patent: 172479 (1876-01-01), Peter
patent: 703118 (1902-06-01), Cox
patent: 1795719 (1931-03-01), Hardison
patent: 2835463 (1958-05-01), Suozzo
patent: 3178035 (1965-04-01), Peterson
patent: 3466086 (1969-09-01), James et al.
patent: 3797817 (1974-03-01), Deisenroth
patent: 4193587 (1980-03-01), Cline
American Standard Inc.
Halvosa George E. A.
Ray, Jr. J. O.
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