Exercise devices – Sit up device
Patent
2000-01-25
2000-07-18
Crow, Stephen R.
Exercise devices
Sit up device
482130, 482908, A63B 2102
Patent
active
060900237
ABSTRACT:
A body exerciser includes a base frame with two support rods provided with first coupling members, and a handle frame with two bendable handle rods provided with second coupling members that are rotatable relative to the first coupling members. Each of two retaining sets is disposed between inner engaging walls of the first and second coupling members to arrest relative rotation in a tightened state. Only in a loosened state when the inner engaging walls have been brought away from each other will relative rotation between the first and second coupling members be permitted. Each of two biasing members is disposed between the inner engaging walls to bias the second coupling members to move away from the first coupling members. Each of two tightening rods is inserted into the coupling members, and has a pivot end extending outwardly of the respective second coupling member. A locking member is pivoted on the pivot end and has first and second cam surfaces. When in the loosened state, the first cam surface faces the respective second coupling member. By turning the locking member to bring the second cam surface to move against the biasing action of the respective biasing member, the respective second coupling member can be urged to engage the respective first coupling member.
REFERENCES:
patent: 5752901 (1998-05-01), Lee
patent: 5772563 (1998-06-01), Lin
patent: 5776042 (1998-06-01), Szabo
patent: 5871425 (1999-02-01), Gvoich
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