Method and apparatus for retarding oil leakage in a sewing machi

Details Method and apparatus for retarding oil leakage in a sewing machi Method and apparatus for retarding oil leakage in a sewing machi

1983-12-01

1985-06-11

Schroeder, Werner H.

Sewing

Elements

Lubricating

384134, D05B 7100

Patent

active

045221367

ABSTRACT:
The atmospheric pressure of lubricant containing cavities, from which leakage occurs, is lowered to a point below atmospheric pressure such that air from the environment is drawn thereinto. Since the air being drawn in occupies the passages through which lubricant leakage occurs, such leakage is effectively retarded.

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patent: 3477385 (1969-11-01), Tangeman et al.
patent: 3869235 (1975-03-01), Moore
patent: 4350345 (1982-09-01), Kalan et al.
patent: 4419948 (1983-12-01), von Hagen

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