Land vehicles – Wheeled – Coasters
Patent
1996-01-29
1997-09-02
Johnson, Brian L.
Land vehicles
Wheeled
Coasters
297 5, 16 18R, 16 35R, B62B 928
Patent
active
056623445
ABSTRACT:
A circular walker having an improved seat assembly and wheel structure. The seat structure includes a lace sewn between the seat and a backrest cover, buckles extending with a cloth strip on the sides and rear of the lace on the seat and engaging sheets on a front. The engaging sheets and buckles are inserted through holes in the carriage and hook on the carriage to fix the seat to the carriage. The wheels prevent foreign objects from rolling into the axle center without need of riveting the axle center. Each wheel has a seat body, two wheel bodies, a seal cover and a main seal cover, the main seal cover having an integral axle hole engaged by a distal end of an axle rod having an engaging block. The seal cover and main seal cover and main seal cover assembled together by inserting the axle rod through axle holes.
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patent: 1914298 (1933-06-01), Sauerwald
patent: 2965943 (1960-12-01), Silver
patent: 4025083 (1977-05-01), Saint
patent: 4225146 (1980-09-01), Takeuchi
patent: 4463840 (1984-08-01), Seynhaeve
patent: 4579473 (1986-04-01), Brugger
patent: 4822030 (1989-04-01), Cone
patent: 5054851 (1991-10-01), Chiu
patent: 5056776 (1991-10-01), Cheng
patent: 5234226 (1993-08-01), Liu
patent: 5447319 (1995-09-01), Huang
Avery Bridget
Johnson Brian L.
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