Exercise devices – Involving user translation or physical simulation thereof – Bicycling
Utility Patent
1999-04-02
2001-01-02
Donnelly, Jerome W. (Department: 3764)
Exercise devices
Involving user translation or physical simulation thereof
Bicycling
C482S908000, C297S354100, C297S363000, C297S36700R
Utility Patent
active
06168553
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an adjusting mechanism, and more particularly to an adjusting mechanism for a seat back of an exerciser.
2. Description of the Prior Art
Typical exercisers, particularly some of the cycling exercisers, comprise a solid seat back that may not be adjusted to different angular positions according to the user's need, such that the users may feel uncomfortable.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional exercisers.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an adjusting mechanism for allowing a seat back of an exerciser to be easily adjusted to different angular positions.
In accordance with one aspect of the invention, there is provided a seat back adjusting mechanism for an exerciser comprising a base including a front portion having a seat provided thereon and including a rear portion having a frame secured thereon, a seat back pivotally secured to the base at a pivot axle, and means for selectively securing the seat back to the base at a selected angular position.
The seat back includes a sector gear provided thereon, the frame includes a shaft rotatably secured therein and having a handle extended therefrom for rotating the shaft, the shaft includes a pawl provided thereon, and means for biasing the pawl of the shaft to engage with the sector gear of the seat back and to secure the seat back to the base at the selected angular position. The pivot axle of the seat back includes two ends, the frame includes two bearings engaged on the ends of the pivot axle, and means for securing the bearings to the frame.
The seat back includes a seat cushion having a rear portion, and includes a beam secured to the rear portion of the seat cushion and having a lower portion, the pivot axle is secured to the lower portion of the beam. One or more springs are engaged between the frame and the seat back for biasing the seat back forward.
A sleeve is secured on the shaft and rotated in concert with the shaft, the pawl is extended upward from the sleeve. The sleeve includes an extension and a spring engaged between the extension of the sleeve and the base for biasing the pawl of the sleeve to engage with the sector gear of the seat back.
REFERENCES:
patent: 4660886 (1987-04-01), Terada et al.
Baxley Charles E.
Donnelly Jerome W.
Nguyen Tam
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