Caster with a shaped stem

Details Caster with a shaped stem Caster with a shaped stem

1998-07-17

2000-09-12

Mah, Chuck Y.

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

Casters

Pintles

16 38, 16 43, B60B 3300

Patent

active

061158828

ABSTRACT:
A caster with a stem extending upwards from a base and defining a stem axis and wherein the stem has a hole having a circumference defined by an internal threading for fastening to a correspondingly externally threaded fastener; a bearing for interconnecting said base and said stem such that said base is free to rotate about said stem axis; wherein at least a part of the external surface of the upper end of said stem has a shape that inhibits rotation of the stem when inserted into a correspondingly shaped bore hole, wherein said shape is defined by a curved surface or planar surface or a combination thereof; and wherein the curve or planar surface does not intersect the circumference defined by the internal threading.

REFERENCES:
patent: 314962 (1885-03-01), Mendenhall
patent: 1036726 (1912-08-01), Salisbury
patent: 2253824 (1941-08-01), Townsend et al.
patent: 4405142 (1983-09-01), Whetstine
patent: 4543685 (1985-10-01), Kassai
patent: 4649596 (1987-03-01), Kassai
patent: 4788741 (1988-12-01), Hilborn
patent: 5008976 (1991-04-01), Busch
patent: 5527051 (1996-06-01), Plaza
patent: 5727285 (1998-03-01), Goman
patent: 5745951 (1998-05-01), Waner
patent: 5813090 (1998-09-01), Miles

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