Exercise devices – Hand – wrist – or finger – Grip
Reexamination Certificate
2000-02-14
2001-11-20
Yu, Mickey (Department: 3764)
Exercise devices
Hand, wrist, or finger
Grip
C482S126000
Reexamination Certificate
active
06319175
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a grip device, and more particularly to an adjustable grip device.
BACKGROUND OF THE INVENTION
The U.S. Pat. No. 5,409,436 discloses an adjustable grip device comprising a pressure block compressing one end of a compression spring, so as to control the pressure range of the compression spring. As a result, the resistance of the grip device is adjusted. When the adjustment is made to have a greater resistance, the spring is under the pressure of the pressure block for a prolonged period of time, thereby resulting in the fatigue of the spring. The efficiency of the grip device is thus reduced.
The distance between the two handles of the conventional grip device is too great for the palm of a woman or child. A normal man will feel uncomfortable if the distance between the handles is smaller.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an adjustable grip device with a different mode of adjustment to reduce the probability of the spring fatigue.
It is another objective of the present invention to provide an adjustable grip device with two adjustable handles which can be adjusted in distance between them.
The present invention comprises two handles, two links, a restraining member, and an elastic member. The two handles are pivoted together such that they can be opened and closed. The two links are fastened pivotally at one end thereof with the midsegment of the handles, and at other end thereof with each other by a middle pivot. The restraining member is disposed on the pivoting ends of the handles. The elastic member is connected at one end thereof with the middle pivot such that other end thereof is disposed on the restraining member. The restraining member restrains the elastic member on different positions of the elastic member such that the restrained portion of the elastic member does not deform.
In light of the principle of the mechanics of materials, two elastic bodies, with same material and shape, their lengths bring about the recovering forces which are in inverse proportion under the condition of the same deformation quantity. The portion of the elastic member that is not restrained is the range of resistance that is actually brought about by the elastic member. The magnitude of resistance of the adjustable grip device is adjusted by adjusting the restrained position of the elastic member.
In using the adjustable grip device of the present invention, the open angle of the two handles can be first adjusted before disposing the elastic member on the restraining member, so as to adjust the distance between the two handles.
REFERENCES:
patent: 4629186 (1986-12-01), Aldridge
patent: 4726580 (1988-02-01), Batiste et al.
patent: 5267929 (1993-12-01), Chen
patent: 5409436 (1995-04-01), Chang
patent: 380231 (1923-09-01), None
patent: 446167 (1912-09-01), None
patent: 16256 (1912-10-01), None
patent: 1344828 (1974-01-01), None
patent: 167484 (1922-01-01), None
Browdy and Neimark
Hwang Victor K.
Yu Mickey
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