Caster

Details Caster Caster

1984-07-12

1987-03-17

Schran, Donald R.

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

Casters

Locked

16 44, B60B 3300

Patent

active

046495967

ABSTRACT:
In a caster the inherent caster swivelling function for allowing a wheel (28) to change its direction of travel can be stopped or locked. The change between the locked and the free swivelling condition is effected by turning an operating lever (15). The angular position of the operating lever (15) for causing the change is held in two stable conditions corresponding to the locked condition and to the free swivelling condition. For this purpose a lever block (22) selectively and resiliently abuts either against a first abutment surface or against a second abutment surface (24, 25) of the operating lever (15), whereby the operating lever (15) has two stable states in its rotating movement. The operating lever (15) is provided with a fitting projection (27) adapted to engage and disengage from the fitting recesses (26a, 26b) formed in a bushing attached to the fixed shaft (1). The engagement and disengagement is correspond to the aforesaid two stable states whereby, these states are retained in a stable manner.

REFERENCES:
patent: 1633638 (1927-06-01), Jarvis et al.
patent: 2458922 (1949-01-01), Andresen
patent: 3400424 (1968-09-01), Altenweger
patent: 4028773 (1977-06-01), Morgan

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