Pullman case steering wheel device

Details Pullman case steering wheel device Pullman case steering wheel device

1999-01-25

2000-10-24

Mah, Chuck Y.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Casters

Locked

16 34, 16 44, 16 35D, B60B 3300

Patent

active

061347485

ABSTRACT:
An automatically retractable swivelling wheels device of a pullman case is disclosed. The swivelling wheels device comprises a bushing, in which a spring retainer is formed on a bottom of a circumferential flange of the bushing, a wheel housing assembly and a swivelling wheels. The swivelling wheels is permitted to swing in any direction as the pullman case moved by a force, and once the force is removed, the swivelling wheels is automatically returned to its original direction by the cooperation of the restoration force of two out of shape springs provided in a C shaped groove of the wheel housing assembly with the spring retainer therebetween in order for the swivelling wheels to be retracted to a recess of the pullman case.

REFERENCES:
patent: 940783 (1909-11-01), Buckland
patent: 1230801 (1917-06-01), Schriver
patent: 2482961 (1949-09-01), Bishop
patent: 4037291 (1977-07-01), Huempfner et al.
patent: 4212093 (1980-07-01), Lombard
patent: 4246677 (1981-01-01), Downing et al.

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