U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Gravity biased exercise apparatus

Patent 5344375 Issued on September 6, 1994. Estimated Expiration Date: Icon_subject January 25, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

76944

1316683

1779594

2640696

2676802

3771785

3825253

Barbell with collapsible load carrying chambers
Patent #: 4103887
Issued on: 08/01/1978
Inventor: Shoofler

Lifting bar assembly
Patent #: 4369968
Issued on: 01/25/1983
Inventor: Price

Barbell collar
Patent #: 4639979
Issued on: 02/03/1987
Inventor: Polson

More ...

Inventor

Application

No. 008512 filed on 01/25/1993

US Classes:

482/106, Handheld bar with weight at each end (e.g., barbell, dumbbell, etc.) or component thereof482/108Bar held by single hand of user (e.g., dumbbell, etc.)

Examiners

Primary: Apley, Richard J.
Assistant: Donnelly, Jerome

Attorney, Agent or Firm

International Class

A63B 021/075

Abstract

In an exercise apparatus for exercising having a horizontal bar and a plurality of weights, the weights including a bar receiving slot opening through the lower edge of the weight, and a closed end intermediate the height of the weight and above the center of gravity of the weight when the bar is at the closed end of the slot, the weight being gravity biased to a position where the open end of the slot is below the bar.

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