1981-11-09
1983-03-29
Hall, George T.
Cutlery
3081871, 184105B, 220DIG19, F16C 3366
Patent
active
043781365
ABSTRACT:
A cap comprises a cap main body made of hard material having an injection hole at the center thereof. A rubbery membrane having a hole which is always closed is attached to the inside of the cap body. The cap prevents leakage of injected lubricant and entry of fibers or dust.
REFERENCES:
patent: 1823618 (1931-09-01), Magnuson
patent: 2594040 (1952-04-01), Le Clair
patent: 3973811 (1976-08-01), Noguera
patent: 4310206 (1982-01-01), Weible
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