Lubrication – Lubricators – Nipple or fitting
Patent
1976-12-15
1978-03-07
Brown, David H.
Lubrication
Lubricators
Nipple or fitting
184 28, 222256, 222340, 222380, 222383, F16N 312
Patent
active
040774945
ABSTRACT:
A grease gun of the type wherein a dispensing head assembly having a lever-operated piston pump is screwed onto the head end of a grease-containing cylinder and wherein a spring-biased plunger and rod assembly in said cylinder is operative to feed grease from the cylinder to the pump, said dispensing head assembly being characterized in that the head cap thereof has diametrically opposite holes through the side wall thereof in which a pump cylinder of circular cross section is firmly supported, in that a sheet metal clevis for a link of the pump-operating lever has its base secured as by welding on the end wall of the head cap, and in that a check valve body is secured in a cross bore adjacent the closed end of the pump cylinder and extends through aligned holes in the head cap end wall and the clevis base to provide a pump outlet to which the grease dispensing tube is connected, said check valve body having a shoulder engaging the clevis base to prevent breaking away of the clevis from the head cap end wall even when large forces are applied on the clevis by the link of the pump-operating lever.
REFERENCES:
patent: 1758250 (1930-05-01), Davis
patent: 1894274 (1933-01-01), Jacques
patent: 1905878 (1933-04-01), Albertine
patent: 2027500 (1936-01-01), Vanderlip
patent: 2218363 (1940-10-01), Sundholm
patent: 2394488 (1946-02-01), Rotter et al.
patent: 2425867 (1947-08-01), Davis
patent: 2521569 (1950-09-01), Davis
patent: 3038768 (1962-06-01), Kludt
patent: 3231147 (1966-01-01), Leahy
Bowers Alvin L.
Spaude Robin W.
Brown David H.
Parker-Hannifin Corporation
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