Exercise resistance methods and apparatus

• US 6,974,405 B2
• Filed: 05/18/2004
• Issued: 12/13/2005
• Est. Priority Date: 09/29/1997
• Status: Expired due to Fees

• Current Assignee: Core Health & Fitness LLC
• Original Assignee: Mark Krull
• Inventors: Krull, Mark A.
• Primary Examiner(s): Donnelly, Jerome W.
• Assistant Examiner(s): Hwang, Victor K.
• Application Number:
  US10/848,778
• Publication Number:
  US 20040220025A1
• Time in Patent Office: 574 Days
• Field of Search: 482 92- 94, 482/98, 482/99, 482106-109, 482/908
• US Class Current: 482/107
• CPC Class Codes: A63B 21/00065 by increasing or reducing the number of resistance units
• CPC Class Codes: A63B 21/0628 for vertical array of weights
• CPC Class Codes: A63B 21/063 Weight selecting means
• CPC Class Codes: A63B 21/0728 with means for fixing weights on bars, i.e. fixing olympic discs or bumper plates on bar-bells or dumb-bells
• CPC Class Codes: A63B 21/075 with variable weights , e.g. weight systems with weight selecting means for bar-bells or dumb-bells
• CPC Class Codes: Y10S 482/908 Adjustable

Abstract

First weights are disposed beneath a base member, and a selector rod is rotated into engagement with a desired number of the first weights. Second weights are disposed on opposite sides of a base member, and selector rods are selectively moved into engagement with the desired number of first weights. Various combinations of these arrangements may be used to provide adjustable resistance to exercise.

Claims

1. A method of adjusting resistance to exercise, comprising the steps of:

providing a group of horizontally aligned weights;

providing a base to support each of the horizontally aligned weights in a respective rest position resting directly on the base;

providing a member to lift the weights from the base;

mounting at least one selector rod on the member;

mounting a knob on one of the member and the base;

moving the member into alignment with the weights and the base;

rotating the knob to a first orientation to move the at least one selector rod into engagement with a first number of the weights;

lifting the member and the first number of the weights from the base;

returning the member and the first number of the weights to the base;

rotating the knob to a second orientation to move the at least one selector rod into engagement with a second number of the weights;

lifting the member and the second number of the weights from the base;

returning the member and the second number of the weights to the base;

rotating the knob to a third orientation to move the at least one selector rod into engagement with a third number of the weights; and

lifting the member and the third number of the weight from the base.

2. The method of claim 1, further comprising the step of providing indicia on the knob to help a person rotate the knob to each said orientation.

3. The method of claim 1, wherein the knob is mounted on an uppermost portion of the member.

4. The method of claim 1, wherein the knob protrudes upward from the member.

5. The method of claim 1, wherein the at least one selector rod is mounted on the member to extend perpendicular to interfaces defined between adjacent weights when the member is moved into alignment with the weights and the base, and the knob is arranged to rotate about an axis that extends perpendicular to the at least one selector rod.

6. The method of claim 1, wherein the member is provided with spacers that extend between adjacent weights.

7. The method of claim 6, wherein the base is provided with similarly arranged spacers that extend between adjacent weights.

8. The method of claim 1, wherein each said rotating step involves movement of the at least one selector rod into direct engagement with each of the respective number of the weights.

9. A method of adjusting resistance to exercise, comprising the steps of:

providing a group of aligned weights;

supporting the weights in respective rest positions;

providing a member to lift the weights;

mounting at least one selector rod on the member;

mounting a knob on the member;

linking rotation of the knob to movement of the at least one selector rod;

moving the member into a rest position relative to the weights;

rotating the knob in a first direction to move the at least one selector rod into engagement with a first number of the weights;

lifting the member and the first number of the weights;

returning the member and the first number of the weights to respective rest positions;

rotating the knob further in the first direction to move the at least one selector rod into engagement with a second number of the weights;

lifting the member and the second number of the weights;

returning the member and the second number of the weights to respective rest positions;

rotating the knob still further in the first direction to move the at least one selector rod into engagement with a third number of the weights; and

lifting the member and the third number of the weights, wherein the at least one selector rod is mounted on the member to extend perpendicular to the weights when the member is moved into alignment with the weights and the base, and the knob is arranged to rotate about an axis that extends perpendicular to the at least one selector rod.

10. The method of claim 9, further comprising the step of providing indicia on the knob to help a person rotate the knob a desired amount in the first direction.

11. The method of claim 9, wherein the knob is mounted on an uppermost portion of the member.

12. The method of claim 9, wherein the knob protrudes upward from the member.

13. The method of claim 9, wherein the step of supporting the weights in respective rest positions is performed by providing the weights with overlapping structure.

14. The method of claim 9, further comprising the step of providing a latch on the member to discourage unintentional rotation of the knob.

15. A method of adjusting resistance to exercise, comprising the steps of:

providing a group of aligned weights;

supporting the weights in respective rest positions;

providing a member to lift the weights, wherein the member is provided with spacers that extend between adjacent weights;

mounting at least one selector rod on the member;

mounting a knob on the member;

linking rotation of the knob to movement of the at least one selector rod;

moving the member into a rest position relative to the weights;

rotating the knob in a first direction to move the at least one selector rod into engagement with a first number of the weights;

lifting the member and the first number of the weights;

returning the member and the first number of the weights to respective rest positions;

rotating the knob further in the first direction to move the at least one selector rod engagement with a second number of the weights;

lifting the member and the second number of the weights;

returning the member and the second number of the weights to respective rest positions;

rotating the knob still further in the first direction to move the at least one selector rod into engagement with a third number of the weights; and

lifting the member and the third number of the weights.

16. The method of claim 15, wherein the step of supporting the weights in respective rest positions is performed by providing a base having similarly arranged spacers that extend between adjacent weights.

17. A method of adjusting resistance to exercise, comprising the steps of:

providing a group of aligned weights;

supporting the weights in respective rest positions by providing each of the weights with first and second plates disposed at opposite ends of the member, and at least one rigid bar interconnected therebetween;

providing a member to lift the weights;

mounting at least one selector rod on the member;

mounting a knob on the member;

linking rotation of the knob to movement of the at least one selector rod;

moving the member into a rest position relative to the weights;

rotating the knob in a first direction to move the at least one selector rod into engagement with a first number of the weights;

lifting the member and the first number of the weights;

returning the member and the first number of the weights to respective rest positions;

rotating the knob further in the first direction to move the at least one selector rod into engagement with a second number of the weights;

lifting the member and the second number of the weights;

returning the member and the second number of the weights to respective rest positions;

rotating the knob still further in the first direction to move the at least one selector rod into engagement with a third number of the weights; and

lifting the member and the third number of the weights.