Brakes – Rod
Patent
1990-05-11
1992-09-29
Graham, Matthew C.
Brakes
Rod
188 77W, B65H 5910
Patent
active
051507714
ABSTRACT:
A mechanical lock of the type where as spring wound about a rod normally grips the rod against axial movement through a lock housing is improved by providing a lightly scored surface finish on contacting surfaces of the rod and the spring, the scoring being transverse to the rod and excluding contacting surfaces of adjacent coils of the spring for enhanced frictional resistance to axial sliding displacement of the rod through the spring while maintaining low friction unwinding of the spring.
REFERENCES:
patent: 4577730 (1986-03-01), Porter
patent: 4823919 (1989-04-01), Hayatdavoudi
Graham Matthew C.
P. L. Porter Company
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