Lubrication – Lubricators – Nipple or fitting
Patent
1998-08-25
2000-03-14
Bucci, David A.
Lubrication
Lubricators
Nipple or fitting
1841052, 285325, F01M 1104
Patent
active
060359692
ABSTRACT:
A coupling device is provided in which a substantially cylindrical grease delivery tube is nested within a substantially cylindrical engagement tube. The engagement tube has an aperture in the sidewall near the forward end of the engagement tube, for receiving a zerk fitting. The coupling device is positively connected to the zerk fitting by slipping the aperture, in the forward end of the engagement tube, over the zerk fitting. The neck of the zerk fitting is engaged by an inwardly-turned annular lip in the forward end of the cylindrical engagement tube. The rearward end of the engagement tube has internal threads which engage threads on an adapter that is threaded onto the grease delivery tube. As the adapter is rotated relative to the stationary, zerk fitting and the grease delivery tube, the coupling device is positively locked in position such that the forward end of the grease delivery tube is in a pressure fit, sealed connection to the face and check valve of the zerk fitting. No positive pressure is required by the operator to maintain positive, sealed connection with the zerk fitting.
REFERENCES:
patent: 1929628 (1933-10-01), Dodge
patent: 1962254 (1934-06-01), Morris
patent: 1970845 (1934-08-01), Dodge
patent: 1974550 (1934-09-01), Tear et al.
patent: 1976059 (1934-10-01), Dodge
patent: 2008574 (1935-07-01), Bock
patent: 2123404 (1938-07-01), Creveling
patent: 4195812 (1980-04-01), Norcross
Bucci David A.
Kim Chong H.
Weatherford Sidney L.
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