Fastener free from a scissoring force

Details Fastener free from a scissoring force Fastener free from a scissoring force

1992-09-10

1995-09-05

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Multipart

411339, 411903, 411914, F16B 2100, F16B 3502

Patent

active

054473993

ABSTRACT:
A bolt, rivet or similar fastener for fastening separate structural parts has a shank, and a tubular cover member covering at least part of the periphery of the shank for preventing a stress from concentrating in part of the shank. The cover member is made of a material having greater deformability or greater elastic strain energy than the material constituting the shank or is made of a material having a relatively small coefficient of friction. When vibration or impact acts on the fastener, the cover member disperses the resulting stress to protect the shank against breakage.

REFERENCES:
patent: 2393564 (1946-01-01), Poupitch
patent: 3042961 (1962-07-01), Tieri
patent: 3271058 (1966-09-01), Anderson
patent: 3620119 (1971-11-01), King, Jr. et al.
patent: 3687496 (1972-08-01), Hindin
patent: 4048898 (1977-09-01), Salter
patent: 4244661 (1981-01-01), Dervy
patent: 4447055 (1984-05-01), Ahrens
patent: 4681497 (1987-07-01), Berecz
patent: 4850771 (1989-07-01), Hurd
patent: 4869632 (1989-09-01), Radtke

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