Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1989-01-03
1989-11-14
Echols, P. W.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
264263, 264273, 264274, B21K 138
Patent
active
048797944
ABSTRACT:
The present invention discloses a method of making a high strength, shock absorbing wheel generally comprising a two piece hub, preferably of molded construction a unitary solid wheel molded onto the hub of the wheel, and axle shaft bearings pressed into a central aperture provided in the hub of the wheel. The hub of the wheel comprises two identical halves, divided along a plane of separation perpendicular to the longitudinal axis of the axle upon which the wheel will rotate, with each hub section including a plurality of apertures disposed about its outer rim to form a plurality of passageways through the outer rim of the assembled hub sections, and further including a plurality of concentric groooves disposed about its outer edge and face to form a plurality of keyways therein. In practicing the method of the invention, the two hub sections of each wheel are aligned and mated without the formation of a firm interconnection between them, a tire is molded onto the peripheral portions of the aligned hub sections, and an axle bearing assembly is interconnected through the central apertures of the hubs. During molding of the tire onto the assembled hub of the wheel, tire material flows through each passageway and into each groove to form positive interlocks between hub and tire and to provide a system for absorbing and distributing impact shock between the structure of the wheel.
REFERENCES:
patent: 2439340 (1948-04-01), Hendrickson
patent: 2629420 (1953-02-01), Walklet
patent: 3387894 (1968-06-01), Louik
patent: 3843202 (1974-10-01), Lacerte
patent: 3894776 (1975-07-01), Black
patent: 4095846 (1978-06-01), Agins
patent: 4535827 (1985-08-01), Seaford
Echols P. W.
Sefrna Ronald B.
Unarco Industries, Inc.
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