Detachable front wheel assembly for a pushcart

Details Detachable front wheel assembly for a pushcart Detachable front wheel assembly for a pushcart

1989-07-26

1990-11-13

Seidel, Richard K.

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

Casters

Detachable

16 29, 16 35R, B60B 3302, E05D 1110

Patent

active

049692305

ABSTRACT:
A detachable front wheel assembly for a pushcart including a sleeve being engagable onto a front leg of a pushcart. A dovetail slot is formed in the sleeve, and two openings communicate with the dovetail slot. A coupling shaft has a vertical dovetail and a protuberance formed on the vertical dovetail. The coupling shaft is insertable into the sleeve with the vertical dovetail slidably engaged within the dovetail slot of the sleeve. The front leg of the pushcart is insertable through the sleeve and then into the coupling shaft so that the coupling shaft and the front leg can be fixed together. Two guides are formed on the coupling shaft. The protuberance of the coupling shaft is engagable within either opening for determining the relative positions between the coupling shaft and the sleeve. A wheel seat with a front wheel is engagable onto the coupling shaft. An annular notch is formed at an intermediate position of the wheel seat so that the guides are limited and rotatable along the annular notch. Therefore, the wheel is rotatable freely with respect to the front leg of the pushcart.

REFERENCES:
patent: 4608729 (1986-09-01), Huang
patent: 4847945 (1989-07-01), Schwartz
patent: 4854008 (1989-08-01), Kuo
patent: 4897895 (1990-02-01), Wang

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