Picnic table moving apparatus

Details Picnic table moving apparatus Picnic table moving apparatus

1997-10-07

1999-01-05

Mah, Chuck Y.

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

Casters

Leg elevators

B60B 3306

Patent

active

058550380

ABSTRACT:
A retractable wheel assembly for moving an object having a vertical surface for attachment of the wheel assembly, comprising a plurality of arms, each arm having a wheel at one end, a plurality of pivot assemblies for receiving the arms such that when the pivot assemblies are attached to the object, the arms pivot in a vertical plane about the pivot assembly, mounting means for attaching the pivot assemblies to the object, and means for locking the wheel assembly in a retracted position wherein the weight of the wheel assembly maintains the wheel assembly in the retracted position, and for locking the wheel assembly in an extended position wherein the weight of the object maintains the wheel assembly in the extended position.

REFERENCES:
patent: 1014440 (1912-01-01), Benskin
patent: 2774986 (1956-12-01), Moorehouse
patent: 2848229 (1958-08-01), Miller
patent: 3514154 (1970-05-01), Kotler
patent: 3616474 (1971-11-01), Lindblad
patent: 3831211 (1974-08-01), Bustamante
patent: 4040658 (1977-08-01), Mayol
patent: 4076305 (1978-02-01), Sullivan
patent: 4615534 (1986-10-01), Blain
patent: 4706983 (1987-11-01), Griswold
patent: 4974284 (1990-12-01), Campbell
patent: 5154265 (1992-10-01), Capistrant
patent: 5586803 (1996-12-01), Overpeck

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