Spring devices – Coil – Plural – one within another
Patent
1996-06-25
1997-12-02
Butler, Douglas C.
Spring devices
Coil
Plural, one within another
267179, 446170, 446431, 446486, A63H 3300
Patent
active
056927371
ABSTRACT:
A helical spring device used for amusement or for stress relief having a plurality of concentrically positioned helical coil springs each extending between two endpieces. The helical coil springs each are highly flexible with a low spring stiffness to mass ratio, and each have a different diameter. The endpieces have an internal member and an external member, with the internal piece having a slit extending through it. The ends of the helical coil springs are inserted through the slits in the internal members in such a manner that they are positioned between the internal and external members. The ends are secured in place by a fastener such as a screw which extends between the internal and external members.
REFERENCES:
patent: 158361 (1875-01-01), Clooney
patent: 505092 (1893-09-01), Chatillon
patent: 1170146 (1916-02-01), Gallagher, Jr.
patent: 2086321 (1937-07-01), Kudo
patent: 2415012 (1947-01-01), James
patent: 2854786 (1958-10-01), Sabo
patent: 3005286 (1961-10-01), Derham
patent: 3011775 (1961-12-01), MacLeod
patent: 3047980 (1962-08-01), Bischoff
patent: 3169757 (1965-02-01), Roder et al.
patent: 3531069 (1970-09-01), Dubberley
patent: 3559976 (1971-02-01), Jerz, Jr.
patent: 3563526 (1971-02-01), Mui
patent: 3618214 (1971-11-01), Armstrong
patent: 3649000 (1972-03-01), Desy
patent: 4114306 (1978-09-01), Molenaar
patent: 4162064 (1979-07-01), Bouton et al.
patent: 4348016 (1982-09-01), Milly
patent: 4475725 (1984-10-01), Niemann
patent: 4728087 (1988-03-01), Wils
patent: 4962834 (1990-10-01), Miher
patent: 5165421 (1992-11-01), Fleischhaker et al.
patent: 5178576 (1993-01-01), Ayers
patent: 5470049 (1995-11-01), Wohler et al.
LandOfFree
Helical spring amusement device and stress reliever 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 amusement device and stress reliever, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Helical spring amusement device and stress reliever will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-795778