Expander device

Details Expander device Expander device

1986-10-02

1989-02-21

Godici, Nicholas P.

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

Casters

Pintles

16 30, 16 43, 411 51, 411 58, 411908, B60B 3500

Patent

active

048052604

ABSTRACT:
An expander device for anchoring in a hole to secure a castor to a part which forms the hole, comprises a conical expander engaged in a sleeve having a conical interior. The expander and the sleeve are mouldings of reinforced plastics material. The expander is screwed onto a coaxial bolt with a 3-start thread. The sleeve is axially slotted from either end, the slots from one end being angularly spaced from one another by 90.degree. as are the other slots with which they are assymetrical so that alternate major and minor sleeve portions are formed between adjacent slots. Deformation takes place predominantly in the minor portions as the sleeve is expanded by axial movement of the conical expander into the internal taper of the sleeve which is caused by rotation of the bolt.

REFERENCES:
patent: 2100873 (1937-11-01), Roberts
patent: 2173950 (1939-09-01), Parkhill
patent: 2955504 (1960-10-01), Lovrinch et al.
patent: 3986626 (1976-10-01), Montgomery
patent: 4180175 (1979-12-01), Virog, Jr. et al.

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