Exercise resistance methods and apparatus

• US 7,547,268 B1
• Filed: 06/13/2006
• Issued: 06/16/2009
• Est. Priority Date: 09/29/1997
• Status: Expired due to Term

• Current Assignee: Core Health & Fitness LLC
• Original Assignee: Mark Krull
• Inventors: Krull, Mark A.
• Primary Examiner(s): Thanh, LoAn H
• Assistant Examiner(s): HWANG, VICTOR KENNY
• Application Number:
  US11/453,295
• Time in Patent Office: 1,099 Days
• Field of Search: 482 92- 94, 482/98, 482/99, 482106-109
• US Class Current: 482/98
• 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

Abstract

Weights are disposed on opposite sides of a base member, and selector rods are selectively moved into engagement with the desired number of weights on each side of the base member.

Claims

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

positioning a plurality of weights in respective rest positions;

moving a member into and out of alignment with the weights;

moving a weight selector on the member along a linear path, including a first portion of the path that extends over an upwardly unbounded portion of each weight in a first subset of the weights, thereby leaving the weight selector free to move upward relative to the first subset, and a second portion of the path that extends beneath at least a portion of each weight in a discrete, second subset of the weights, to selectively secure the second subset to the member for upward movement together with the weight selector.

2. The method of claim 1, wherein the member has a first end portion, a second end portion, and an intermediate handle secured therebetween, and some of the weights are positioned in alignment with the first end portion, and some of the weights are positioned in alignment with the second end portion.

3. The method of claim 2, wherein the handle defines a longitudinal axis, and the second moving step involves movement of the weight selector parallel to the axis.

4. The method of claim 1, further comprising the step of moving a second weight selector on the member linearly over an upwardly unbounded portion of each said weight in the second subset of the weights, thereby leaving the second weight selector free to move upward relative to the second subset, and beneath at least a portion of each said weight in the first subset of the weights to selectively secure the first subset to the member for upward movement together with the second weight selector.

5. An adjustable weight exercise device, comprising:

a plurality of weights disposed in respective aligned positions; and

a member sized and configured for movement into and out of alignment with the weights, wherein a weight selector is movably mounted on the member for movement along a linear path that extends over an upwardly exposed sidewall of each weight in a first subset of the weights, thereby leaving the weight selector free to move upward relative to the first subset, and beneath at least a portion of each weight in a discrete, second subset of the weights, thereby constraining the second subset to move upward together with the weight selector.

6. The device of claim 5, wherein the member has a first end portion, a second end portion, and an intermediate handle secured therebetween, and some of the weights align with the first end portion, and some of the weights align with the second end portion.

7. The device of claim 6, wherein the handle defines a longitudinal axis, and the weight selector moves parallel to the axis.

8. The device of claim 5, further comprising a second weight selector movably mounted on the member for linear movement over an upwardly exposed sidewall of each said weight in the second subset of the weights, thereby leaving the weight selector free to move upward relative to the second subset, and beneath at least a portion of each said weight in the first subset of the weights, thereby constraining the first subset to move upward together with the second weight selector.

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

positioning a plurality of weights in respective rest positions;

moving a member into and out of alignment with the weights;

moving a first weight selector on the member linearly over an upwardly unobstructed sidewall of each weight in a first subset of the weights, leaving the first weight selector free to move upward relative to the first subset, and beneath at least a portion of each weight in a discrete, second subset of the weights to selectively secure the second subset to the member for upward movement together with the first weight selector; and

moving a second weight selector on the member linearly over an upwardly unobstructed sidewall of each said weight in the second subset of the weights, leaving the second weight selector free to move upward relative to the second subset, and beneath at least a portion of each said weight in the first subset of the weights to selectively secure the first subset to the member for upward movement together with the second weight selector.

10. An adjustable weight exercise device, comprising:

a plurality of weights disposed in respective aligned positions; and

a member sized and configured for movement into and out of alignment with the weights, wherein a first weight selector is movably mounted on the member for linear movement over an upwardly open sidewall of each weight in a first subset of the weights, leaving the first weight selector free to move upward relative to the first subset, and beneath at least a portion of each weight in a discrete, second subset of the weights, constraining the second subset to move upward together with the first weight selector, and a second weight selector is movably mounted on the member for linear movement over an upwardly open sidewall of each said weight in the second subset of the weights, leaving the second weight selector free to move upward relative to the second subset, and beneath at least a portion of each said weight in the first subset of the weights, constraining the first subset to move upward together with the second weight selector.