Dual cam exercise device method and apparatus
First Claim
1. A resistance exercise device for exercising a muscle or muscle group, the device comprisinga frame;
- a primary cam supported by and fixed to the frame in a non-rotatable manner, the primary cam having a circumference;
a secondary cam supported by a at least one connecting arm;
the at least one arm comprisinga first end pivotally connected to the primary cam via the axis, anda second end pivotally connected to the secondary cam via the axis;
a cam connection between the primary cam and the secondary cam for rotating such the secondary cam around at least a portion of the circumference of the primary cam when the secondary cam is rotated;
wherein the cam connection further comprises;
a first cam connection would clockwise on the primary cam and wound counterclockwise on the secondary cam, anda second cam connection wound counterclockwise on the primary cam and wound clockwise on the secondary cam;
wherein the primary cam and the secondary cam are interlocked by the cam connection such that any rotation of the secondary cam will cause it to rotate around the primary cam;
a contact cam, plate, lever, arm, etc. fixed rigidly to the axis of the secondary cam;
a resistance line attached such that when the secondary cam is rotated the resistance line is engaged to tension;
a form of resistance attached such that when the resistance line is engaged it will move the form of resistance.
0 Assignments
0 Petitions
Accused Products
Abstract
A device for resistance exercise of muscle groups that cross two or more joints such as biceps group, triceps group, quadriceps group, and hamstring group. The device comprises a primary cam or gear fixed non-rotatably to the frame of an appropriate exercise machine for working the desired body part, and a secondary cam or gear connected only to the primary cam in such a way which, when rotated, tracks around the primary cam or gear. Resistance is provided with a cable, belt, chain, or other means to the axis of the secondary cam only. When properly positioned user applies force to the contact point connected to the secondary cam and secondary axis, the device moves both desired joints simultaneously through a range of motion while under a predictable resistance. The device provides an improved range of movement while under resistance, thereby supplying a greater extension and contraction of the desired muscle or muscle group than prior art devices.
48 Citations
11 Claims
-
1. A resistance exercise device for exercising a muscle or muscle group, the device comprising
a frame; -
a primary cam supported by and fixed to the frame in a non-rotatable manner, the primary cam having a circumference; a secondary cam supported by a at least one connecting arm; the at least one arm comprising a first end pivotally connected to the primary cam via the axis, and a second end pivotally connected to the secondary cam via the axis; a cam connection between the primary cam and the secondary cam for rotating such the secondary cam around at least a portion of the circumference of the primary cam when the secondary cam is rotated; wherein the cam connection further comprises; a first cam connection would clockwise on the primary cam and wound counterclockwise on the secondary cam, and a second cam connection wound counterclockwise on the primary cam and wound clockwise on the secondary cam; wherein the primary cam and the secondary cam are interlocked by the cam connection such that any rotation of the secondary cam will cause it to rotate around the primary cam; a contact cam, plate, lever, arm, etc. fixed rigidly to the axis of the secondary cam; a resistance line attached such that when the secondary cam is rotated the resistance line is engaged to tension; a form of resistance attached such that when the resistance line is engaged it will move the form of resistance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of providing resistance exercise for a muscle or muscle group that crosses two joints of the same limb, the method requiring
a resistance exercise device comprising a frame a primary cam having a circumference, the primary cam fixed non-rotatably to the frame; -
a secondary cam supported by at least one arm connected only to the primary cam; the arm comprising; a first end connected pivotally to the primary cam via the axis, and a second end connected pivotally to the secondary cam via the axis; and
the secondary axis connected rigidly to the secondary cam;a cam connection between the primary cam and the secondary cam, such that the cam connection causes the secondary cam to rotate around at least a portion of the circumference of the primary cam when the secondary cam is rotated; a contact cam, plate, lever, arm, etc. fixed rigidly to the axis of the secondary cam; a resistance line attached such that when the secondary cam is rotated the resistance line is engaged to tension; a form of resistance attached such that when the resistance line is engaged it will move the form of resistance; the method comprising the steps of; using the resistance exercise device to apply a resistance to a full or partial range of motion of a desired limb, muscle or muscle group; positioning the distal joint of the desired limb such as the elbow or knee in approximate line with the axis of the secondary cam and engaging the contact plate via the handle or pad of the appropriate design; and contracting the desired muscle or muscle group, causing the resistance line to engage a form of resistance and causing the secondary cam to rotate around the primary cam such that the machine will move both the proximal and distal joint of the desired limb through a desired and designed range of motion. - View Dependent Claims (11)
-
Specification