Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters – Leg elevators
Patent
1997-02-05
1998-05-19
Mah, Chuck
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Casters
Leg elevators
B60B 3306
Patent
active
057522901
ABSTRACT:
A caster assembly of a shopping bag is composed of a base for holding the shopping bag, two support frames fastened pivotally with the base such that the support frames can be folded and unfolded, two elastic elements enabling the support frames to return to a folded position from an unfolded position, two casters fastened pivotally with the support frames, and a locating member fastened pivotally with the support frames such that two arms of the locating member are located between the base and the support frames at such time when the locating member is folded, and that the arms of the locating member push the support frames to spread out at such time when the locating member is unfolded.
REFERENCES:
patent: 1014440 (1912-01-01), Benskin
patent: 2521819 (1950-09-01), Baer
patent: 2783055 (1957-02-01), Michaud
patent: 2812189 (1957-11-01), Geldhof
patent: 3633242 (1972-01-01), Wasofsky
patent: 4588203 (1986-05-01), Anderson
patent: 5375294 (1994-12-01), Garrett
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