Selectorized dumbbell having shock absorbing system

• US 7,771,330 B2
• Filed: 08/02/2006
• Issued: 08/10/2010
• Est. Priority Date: 08/02/2006
• Status: Active Grant

• Current Assignee: PowerBlock Holdings, Inc.
• Original Assignee: PowerBlock Holdings, Inc.
• Inventors: Towley, Carl K. III, Olson, Gregory S.
• Primary Examiner(s): Thanh; Loan H
• Assistant Examiner(s): Ganesan; Sundhara M
• Application Number:
  US11/498,314
• Publication Number:
  US 20080032873A1
• Time in Patent Office: 1,469 Days
• Field of Search: 482/93, 482/94, 482/97, 482/98, 482/104, 482/106, 482/107, 482/108, 482/908, 482/910, 482/50
• US Class Current: 482/108
• CPC Class Codes: A63B 2071/0063 Shock absorbers
• CPC Class Codes: A63B 21/00065 by increasing or reducing the number of resistance units
• CPC Class Codes: A63B 21/063 Weight selecting means
• 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: A63B 2209/00 Characteristics of used materials

Abstract

A selectorized dumbbell has a handle that can be inserted into a gap between stacks of nested left and right weight plates. A selector determines how many left weight plates are coupled to the left end of the handle and how many right weight plates are coupled to the right end of the handle. Each weight plate is held between a pair of flexible arms on a forked carrier. The arms allow the weight plates to deflect out of a normal, substantially upright, orientation if an impact shock is delivered to the dumbbell. The arms are restored to their normal orientation once the impact shock dissipates. This allows the impact shock to be absorbed without damaging the dumbbell or while minimizing damage to the dumbbell.

Claims

1. A selectorized dumbbell, which comprises:

(a) a plurality of nested weights, a handle, and a selector that couples a selected number of the weights to the handle; and

(b) wherein each nested weight comprises;

(i) at least one rigid weight plate; and

(ii) a weight frame with rigid and flexible portions, wherein the flexible portion of each weight frame comprises a substantially planar flexible arm that bends or flexes at a location adjacent one end of the arm, wherein the weight plate is immovably attached to and carried by an opposite free end of the flexible arm of the weight frame such that the flexible arm substantially alone bears and supports the weight of the weight plate and the flexible arm and the weight plate jointly move together as one unit to permit the weight plate to move relative to the rigid portion of the weight frame in response to an impact shock by flexing of the flexible arm relative to the rigid portion of the weight frame.

2. The dumbbell of claim 1, wherein the rigid portion of each weight frame includes a weight selection section that coacts with the selector to determine whether or not the weight frame is coupled to the handle.

3. The dumbbell of claim 1, wherein each nested weight further comprises at least a pair of flexible arms that are spaced apart from one another on opposite ends of the rigid portion of the weight frame, and wherein at least one weight plate is immovably attached to each flexible arm on each end of the rigid portion of the weight frame.

4. A selectorized dumbbell, which comprises:

(a) a stack of nested left weight plates separated by a gap from a stack of nested right weight plates,

(b) a handle that can be inserted into the gap between the weight plate stacks;

(c) a selector that determines how many left weight plates are coupled to a left end of the handle and how many right weight plates are coupled to a right end of the handle; and

(d) wherein each weight plate is carried on at least one flexible member in a manner such that the at least one flexible member substantially alone bears and supports the weight of the weight plate, wherein the at least one flexible member that carries each weight plate is separate and distinct from the flexible members used to carry the other weight plates, and wherein the flexible members are configured to allow the weight plates to deflect out of a normal orientation if an impact shock is delivered to the dumbbell and to subsequently restore the weight plates to their normal orientation once the impact shock dissipates.

5. A selectorized dumbbell, which comprises:

(a) a plurality of nested weights, a handle, and a selector that couples a selected number of weights to the handle; and

(b) wherein each nested weight comprises;

(i) a forked carrier having a pair of spaced arms extending upwardly from an underlying base;

(ii) a weight plate that is formed as a separate piece from the arms and base of the forked carrier, wherein the weight plate is removably held between the arms of the carrier with the weight plate being supported by the arms on the base of the carrier in a manner such that the weight plate is spaced above and substantially out of direct contact with the base of the carrier with the weight of the weight plate being borne by the arms of the carrier; and

(iii) wherein the arms of the carrier are flexible to permit the weight plate to flex out of a normal orientation and to return to the normal orientation to thereby absorb impact shocks.

6. The dumbbell of claim 5, further including a horizontal hub extending between the arms of the carrier, wherein the weight plate has a hole that is concentrically received on the hub to secure the weight plate to the carrier.

7. The dumbbell of claim 6, wherein each of the arms of the carrier includes a stub shaft that forms a portion of the horizontal hub with the stub shafts entering the hole in the weight plate from opposite sides of the hole.

8. The dumbbell of claim 6, further including a fastener passing through the horizontal hub of the carrier for holding the arms of the carrier together to secure the weight plate therebetween.

9. The dumbbell of claim 5, wherein each weight includes a left carrier holding a left weight plate and a right carrier holding a right weight plate, wherein the left and right carriers are spaced apart from one another and are secured, respectively, to the left and right ends of at least one interconnecting member that joins the left and right carriers together.

10. The dumbbell of claim 9, wherein the left and right ends of the interconnecting member are releasably received in slots in the bases of the left and right carriers.

11. The dumbbell of claim 9, wherein the bases of the carriers and the interconnecting member form a substantially rigid weight frame, and wherein the arms of the carriers are flexible relative to the rigid weight frame.

12. A selectorized dumbbell, which comprises:

(a) a plurality of nested weights, a handle, and a selector that couples a selected number of the weights to the handle; and

(b) wherein each nested weight comprises;

(i) a pair of weight plates;

(ii) a weight frame for carrying the weight plates in a spaced apart orientation, wherein the weight frame comprises;

a pair of carriers, wherein each carrier has a base and at least one arm projecting upwardly from the base with the weight plate being secured to the arm such that each carrier holds one weight plate, and wherein the base of each carrier is made in two halves that abut one another along a parting line with the two halves being releasably secured together along the parting line;

a pair of elongated interconnecting members extending between and releasably connected to opposite front and back sides of the bases of the pair of carriers to join the carriers together and hold the carriers in the spaced apart orientation, wherein each interconnecting member has opposite ends that are L-shaped with each L-shaped end of the interconnecting member being inserted between the carrier halves into a slot formed along the parting line; and

wherein each interconnecting member comprises a strap having a substantially flat cross-sectional profile, and wherein the slot into which each L-shaped end of each strap is inserted is angled upwardly as one proceeds inwardly along the slot such that the strap between the L-shaped ends is angled outwardly as one proceeds upwardly.