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Hand gripperHand gripper description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20080103026, Hand gripper. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001]1. Field of the Invention [0002]The present invention relates to a hand gripper, and more particularly, to a hand gripper in which elastic force acting between arms can be easily regulated. [0003]2. Description of the Related Art [0004]A hand gripper is an exercising apparatus for strengthening muscles of the hand or the forearm, and it is small so that it can be easily treated and is portable, and in addition is cheap so that it can be easily used by men and women of all ages anytime and anywhere. [0005]When a user grips the hand gripper by one hand, and repeatedly moves an arm which is supported by fingers toward and away from an arm which is supported by the palm of the hand, an exercise for strengthening muscles is performed by the elastic force which is provided by a spring which is installed between the arms. [0006]A conventional hand gripper has a drawback that magnitude of the elastic force acting between arms and the distance between the arms are fixed. In order to solve this drawback, in the Korean patent No. 625851, the magnitude of the elastic force and the distance between the arms can be adjusted according to the desired grip force and the size of the hand using the rotating axis bolt. [0007]However, a hand gripper in which the magnitude of the elastic force can be more easily adjusted and which can be more easily manufactured is recently required. SUMMARY OF THE INVENTION [0008]The present invention has been made in an effort to provide a hand gripper in which elastic force acting between arms can be easily regulated. [0009]An exemplary embodiment of the present invention provides a hand gripper having a pair of arms which are rotatably connected to one another around a rotating axis at upper ends thereof and are configured to approach one another and to be separated from one another by rotation around the rotating axis and a compression spring which is interposed between the pair of the arms to provide elastic force is provided including: a first guide one end of which is rotatably supported by a pin at an inside of the first arm and at the same time supports an end of the compression spring and the other end of which is provided with a first rod having a hollow inner side extending toward an inside of the compression spring; and a spring guide which is provided with a second rod being slidably inserted into the hollow inner side of the first rod at one end thereof and is provided with a spring supporting part supporting the other end of the compression spring and a second guide with a sliding protrusion at the other end thereof, wherein the second arm is provided with an elastic force regulating part with a plurality of sliding grooves to which the sliding protrusion can be contactly engaged at an inside thereof, so that the magnitude of the elastic force is regulated depending on which one of the sliding grooves is engaged with the sliding protrusion. [0010]Observation holes may be formed on the second arm at positions corresponding to the respective sliding grooves such that the sliding protrusion engaging with the respective sliding grooves can be seen from the outside. [0011]The hand gripper may further include a distance regulating part regulating the distance between the arms. BRIEF DESCRIPTION OF THE DRAWINGS [0012]FIG. 1 is a cross sectional view of a hand gripper according to an embodiment of the present invention. [0013]FIG. 2 shows an outer view of a hand gripper according to an embodiment of the present invention. [0014]FIG. 3 is a drawing showing the structure of a distance regulating part of a hand gripper according to an embodiment of the present invention. [0015]FIG. 4 is a drawing sequentially showing the process of adjusting the magnitude of the elastic force of a hand gripper according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS [0016]Exemplary embodiments of the present invention will hereinafter be described in detail with reference to the drawings. [0017]FIG. 1 is a cross sectional view of a hand gripper according to an embodiment of the present invention, and FIG. 2 shows an outer view of a hand gripper according to an embodiment of the present invention. [0018]Referring to the drawings, a hand gripper according to an embodiment of the present invention includes a pair of arms 10 and 20. [0019]The pair of arms 10 and 20 are connected to one another at upper ends thereof on a rotating axis 11, and configured to approach to one another and to move away from one another on the rotating axis 11. A compression spring 32 which provides the elastic force in the direction in which the arms 10 and 20 move away from one another is installed between the arms 10 and 20. [0020]Lower parts of the first arm 10 and the second arm 20 form grip parts 12 and 22, and contact with fingers or the palm so as to be gripped by the hand. Continue reading about Hand gripper... Full patent description for Hand gripper Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Hand gripper patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Hand gripper or other areas of interest. ### Previous Patent Application: Exercise apparatus with spoken messages Next Patent Application: Parent infant exercise equipment Industry Class: Exercise devices ### FreshPatents.com Support Thank you for viewing the Hand gripper patent info. 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