Multi-directional rotatable wrist exerciser

• US 5,364,323 A
• Filed: 09/09/1993
• Issued: 11/15/1994
• Est. Priority Date: 09/09/1993
• Status: Expired due to Fees

• Current Assignee: Ming-Liang Su
• Original Assignee: Liu, Tony
• Inventors: Liu, Tony
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Mollo, Jeanne M.
• Application Number:
  US08/118,274
• Time in Patent Office: 432 Days
• Field of Search: 482/44, 482/45, 482/46, 482/122, 482/124, 482/127, 482/128, 601/23, 601/33, 601/40, 602/16, 602/21
• US Class Current: 482/45
• CPC Class Codes: A63B 21/023 Wound springs
• CPC Class Codes: A63B 21/045 having torsion or bending or flexion element
• CPC Class Codes: A63B 23/14 for wrist joints

Abstract

A structure for a multi-directional rotatable wrist exerciser comprising an arm covering body and a movable base. Said arm covering body and the movable base are pivotally connected together but movable by spiral springs which are made of harden materials. Since the harden spiral springs are free to turn in any direction, a user can therefore use the wrist exerciser to work out his wrist. The stretching of the springs generate a restoring force which the user tries to overcome through wrist exercising.

Claims

1. A multi-directional rotatable wrist exerciser comprising:

an arm covering body;

a movable base;

a plurality of bolts; and

a plurality of spiral springs;

wherein said arm covering body has an elongated frame body with two semi-arc portions opposing each other, a forward end of the arm covering body has an open end substantially circular positioning housing cover on each edge, said positioning housing cover has an internal annular member which is used to split up the inside of the positioning housing cover into two containing spaces;

the movable base is configured to have a `U` shape, in which a handle is attached to an open end of the U-shaped movable base by means of connecting components, each side of a bottom edge of the movable base has a substantially circular positioning housing, which has an internal annular member for splitting up the positioning housing into two containing spaces;

the bolts have threads in their shanks, the diameters of the bolts'"'"' heads are equal to the inside diameters of the positioning housing cover and the positioning housing, the diameters of the shanks are equal to the inside diameters of the annular members of the positioning housing cover and the positioning housing;

the spiral springs are made from harden material, the pitches of the ends of the spiral springs are equal to the pitches of the threads of the bolts, the pitches at the center portion of the spiral springs are greater than the pitches at both ends of each spiral spring;

both ends of each spiral spring are respectively fitted into the positioning housing cover and the positioning housing, one end of each spiral spring butts against a bottom of the annular member of the positioning housing cover while the other end butts against a bottom of the annular member of the positioning housing, the other containing spaces of the positioning housing cover and the positioning housing accepts said bolts, the bottom surfaces of the head of each of the bolts butts against top of the annular member and the shank of the bolts feed through the annular member, reach to the other containing space and secure to the spiral spring; and

whereby tightening the bolt the spiral spring can be secured and positioned in between the positioning housing cover and the positioning housing, allowing the covering body and the movable base to be fastened together in a multi-directional movable manner.