Backbone stretching exerciser

Details Backbone stretching exerciser Backbone stretching exerciser

1997-09-29

1998-11-10

Brown, Michael A.

Exercise devices

Support for entire body of user

482140, 482130, 482112, 482133, 482907, A63B 2100, A63B 2600, A63B 21008

Patent

active

058335900

ABSTRACT:
A backbone stretching exerciser including a base frame unit having two front lugs and two rear guide rollers respectively disposed at the top, a seat frame unit having a fixed end pivoted to front lugs of the base frame unit and a free end, a back frame unit pivoted to the free end of the seat frame unit and adapted for supporting the user's back, the back frame unit having two substantially arched guide tubes bilaterally disposed at a back side thereof and respectively supported on the guide rollers of the base frame unit, and a hydraulic cylinder connected between the base frame unit and the free end of the seat frame unit to impart a damping resistance to the seat frame unit.

REFERENCES:
patent: 1973945 (1934-06-01), Chavin
patent: 4583731 (1986-04-01), Crivello
patent: 5070863 (1991-12-01), McArthur
patent: 5110121 (1992-05-01), Foster
patent: 5215511 (1993-06-01), Cheng
patent: 5256126 (1993-10-01), Grotstein
patent: 5300005 (1994-04-01), Wang
patent: 5531658 (1996-07-01), L.S.C.
patent: 5559261 (1996-09-01), Easley
patent: 5573485 (1996-11-01), Geshwender
patent: 5624361 (1997-04-01), Lai
patent: 5759137 (1998-06-01), Huang

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