Method of making a lubricated hinge pin

Details Method of making a lubricated hinge pin Method of making a lubricated hinge pin

1985-11-14

1987-07-14

Silverberg, Fred

Metal working

Hinge making or assembling

29434, 29460, 29512, 29523, 16274, 16386, B21D 5340, E05D 510

Patent

active

046792856

ABSTRACT:
A lubricated hinge comprises a pair of hinge plates and a lubricant filled hinge pin fitting through barrel sections of the hinge plates so as to pivotally connect same. The hinge pin comprises a hollow cylindrical body hvaing at one end a radially expansible portion terminating with a stop shoulder and at another end a preformed head and lubricant entrance. The pin body between its ends has lubricant delivery holes for delivering lubricant to between the pin body and the barrel sections of two hinge plates. The pin body is insertable into the barrel sections with the preformed head abutting one side of the hinge and the stop shoulder aligned with an opposite side of the hinge. A shank of a mandrel having an extruding head is insertable through the pin body and is adapted to then be pulled so as to radially expand the expansion portion of the pin body with the extruding head to abut the other side of the hinge and until the extruding head is stopped by the stop shoulder in the pin body. The shank is connected to the extruding head by a breakaway portion which breaks with the extruding head stopped by the stop shoulder upon a predetermined increased pulling force to thereby release the shank for removal from the pin body while the extruding head is sealingly retained to close the one end of said pin body. The other end of the pin body is adapted to receive lubricant through the entrance and thereafter be sealingly closed.

REFERENCES:
patent: 1433095 (1922-10-01), Peary
patent: 2588216 (1952-03-01), DeGraaf
patent: 2588258 (1952-03-01), Lowman
patent: 3407903 (1968-10-01), Sansabrino

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