Coil wound spacer

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member or portion thereof located between substructure and...

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Details

123195C, 220327, 403408, 411544, 411546, F16B 3924, F16B 4300

Patent

active

043033628

ABSTRACT:
Spacers are used where added bolt length is advantageous. Such spacers are usually one piece and are formed from tubing having a solid cylindrical wall which often splits or yields when stressed by highly torqued bolts. An improved spacer (10) is formed from wound coil (12) to form a spiral walled cylindrical body (20) having advantageous over prior spacers. Each spiral (14) includes a portion (26) which abuts each adjacent spiral (14) and a portion (30) which is free of such abutment.

REFERENCES:
patent: 1808817 (1931-06-01), Oldham
patent: 2014995 (1935-09-01), Washer
patent: 3183762 (1965-05-01), Poupitch
patent: 3313599 (1967-04-01), Boon
patent: 3399269 (1968-08-01), Willox
patent: 3880041 (1975-04-01), Markowski
patent: 4027644 (1977-06-01), Timour
patent: 4113398 (1978-09-01), Jordan
patent: 4122326 (1978-10-01), Mercier
patent: 4165194 (1979-08-01), Flower

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