Helical spring fastener

Communications: radio wave antennas – Antennas – With vehicle

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

343878, 343888, 343900, H01Q 112

Patent

active

H00015881

ABSTRACT:
The invention is a two-ended fastener having one end suitable for attaching the fastener to a base with a second end having a special thread that is substantially cylindrical at its root and sharp at its crown. This thread is designed to mate with the radially inward surfaces of a round wire helical spring so that the helical spring may simply be threaded to the fastener. By utilizing the special thread described, a high degree of surface contact between the fastener and the spring is made possible, increasing spring retention. The special thread inner diameter may be made slightly larger than the interior diameter of the spring so that the helical spring will be slightly expanded when threaded to the fastener. An elastic force between the threaded portion of the spring and the fastener further helps retain the spring to the fastener. This elastic force increases as an attempt is made to unthread the spring from the fastener.

REFERENCES:
patent: 1074302 (1913-03-01), Daspe
patent: 1085505 (1914-01-01), Stafford
patent: 2283607 (1942-05-01), Ludwig
patent: 2546026 (1951-03-01), Coon
patent: 3106712 (1963-10-01), Daggett
patent: 3229295 (1966-01-01), Watkin et al.
patent: 3279133 (1966-10-01), Korte
patent: 3507069 (1970-04-01), Borba
patent: 3624662 (1971-11-01), Feder
patent: 3886560 (1975-05-01), Mortensen et al.
patent: 4103305 (1978-07-01), Gualano
patent: 4109251 (1978-08-01), MacDougall
patent: 4205319 (1980-05-01), Gasparaitis et al.
patent: 4380847 (1983-04-01), Tajima
patent: 4514926 (1985-05-01), Weber, Sr.
patent: 4760348 (1988-07-01), Pease et al.
patent: 4766441 (1988-08-01), Phillips et al.
patent: 4774519 (1988-09-01), Pease et al.
patent: 4914450 (1990-04-01), Dilley et al.
patent: 5049896 (1991-09-01), Conley
patent: 5101213 (1992-03-01), Harada et al.
patent: 5103236 (1992-04-01), DuShane

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Helical spring fastener does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Helical spring fastener, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Helical spring fastener will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1943464

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.