Locking fastener device

Details Locking fastener device Locking fastener device

1976-09-20

1977-10-25

Britts, Ramon S.

Brushing, scrubbing, and general cleaning

151 41, F16B 3932

Patent

active

040552080

ABSTRACT:
A rotary threaded fastener and twisted tooth lock washer assembly providing a ratchet-type locking action due to the inter-engagement of the twisted teeth on the lock washer and cogs formed on the bearing surface of the threaded fastener. The teeth are configured to be frustoconical in composite on the lock washer body with each tooth being of a transverse cross-sectional configuration which includes an upturned radial edge adjacent and interacting with the cogs in order to greatly increase the resistance to unauthorized loosening of the assembly.

REFERENCES:
patent: 594918 (1897-12-01), Sweeney
patent: 1784142 (1930-12-01), Hosking
patent: 1924695 (1933-08-01), Olson
patent: 2006359 (1935-07-01), Lackner
patent: 3258047 (1966-06-01), Loretan
patent: 3275055 (1966-09-01), Gutshall
patent: 3342235 (1967-09-01), Pylypyshyn
patent: 3527279 (1970-09-01), Sparks
patent: 3540509 (1970-11-01), Gutshall

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