Brushing – scrubbing – and general cleaning
Patent
1978-08-21
1980-06-17
Britts, Ramon S.
Brushing, scrubbing, and general cleaning
F16B 3930
Patent
active
042079381
ABSTRACT:
An improved locknut has an axially extending central opening with standard thread convolutions which freely engage an externally threaded member and lock thread convolutions which interfere with the threads on the externally threaded member to provide a locking action. The lock thread convolutions have an axial extent which is less than half of the total axial extent of the internal threads on the nut. The lock thread convolutions are formed by making a plurality of indentations in the nut body. Each of these indentations is defined by a continuously curving surface which forms part of a cylindrical plane. Each indentation has continuously curving edges which intersect at a pair of peaks at opposite ends of the indentation. Each indentation also has a height which is less than one-third of the height of a wrenching flat and a width which is less than one-third of the width of a wrenching flat. This enables the number of free running standard thread convolutions on the inside of the nut to be maximized and minimizes galling between the locking thread convolutions and the external thread convolutions.
REFERENCES:
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patent: 2452192 (1948-10-01), Hosking
patent: 2563162 (1951-08-01), Eckenbeck et al.
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patent: 3456704 (1969-07-01), Johnson
patent: 3460428 (1969-08-01), Charles
patent: 3678978 (1972-07-01), Davis et al.
patent: 3747656 (1973-07-01), Mortus
Britts Ramon S.
The Lamson & Sessions Co.
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