Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1975-08-04
1977-06-21
Lanham, C.W.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
184 1E, 184 12, 305 14, 305 52, 308109, 308111, 308103, 308104, 308125, B21D 5310
Patent
active
040301788
ABSTRACT:
A roller for a continuous track on a crawler tractor or the like comprises two sections welded together to define an interior lubrication cavity which communicates by means of lubrication passages to spaces containing bearings and to an exterior lubrication port. Liquid plastic material capable of in situ foaming to form an open cell plastic mass is injected into the cavity and passages wherein it sets into an open cell plastic mass. Subsequently, lubricating oil or grease is injected under pressure through the lubrication port to fill the open cells of the plastic mass for storage and subsequent supply to the bearings through the lubrication passages. The open cell plastic mass also provides a barrier or filter for particles of contaminants disposed in the cavity as a result of welding and other manufacturing steps and prevents circulating of such particles with the lubricant and damage to the bearings and seals.
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Brown Robert A.
Fiat-Allis Construction Machinery, Inc.
Kirby Thomas F.
Lanham C.W.
Rising V. K.
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