Structural article including cast-in place bearing

Details Structural article including cast-in place bearing Structural article including cast-in place bearing

1994-06-21

1996-07-16

Johnson, Blair

Joints and connections

Molded joint

Member cast in situ

403 26, 403 62, 403265, 29898049, 29719, 2972581, 2972721, 297281, 384490, 384537, F16B 1100, F16C 1100, B25G 334, A47C 302

Patent

active

055360998

ABSTRACT:
An article, such as a swing arm for a glider chair, includes an elongated structural member made of high strength aluminum, and a pair of cast-in place preassembled bearings located in opposing ends of the structural member and facing in opposite directions. The preassembled bearings each include a first cup-shaped bearing member defining an outer depression for secure engagement by the material of the structural member and an inner ring-shaped ball race or track. The preassembled bearings each further include a second tubular bearing member defining an outer ring-shaped ball race or track and an internal passageway. Ball bearings are positioned between the first and second ring-shaped races for movably supporting the second bearing member on the first bearing member. Lubricant can be added through the passageway in the second bearing member into the area of the ball bearings for lubricating the ball bearings. The passageway of the second bearing member is threaded to receive an attachment screw, which attachment screw holds the lubricant within the bearing. A method and apparatus for manufacturing the structural article are also disclosed and claimed.

REFERENCES:
patent: 4108415 (1978-08-01), Hauray et al.
patent: 4179313 (1979-12-01), Koch et al.
patent: 4213650 (1980-07-01), Sroub
patent: 5186549 (1993-02-01), Walters et al.
patent: 5310268 (1994-05-01), Schlereth

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