Exercise devices – User manipulated force resisting apparatus – component... – Utilizing weight resistance
Reexamination Certificate
2000-05-22
2003-04-01
Donnelly, Jerome W. (Department: 3764)
Exercise devices
User manipulated force resisting apparatus, component...
Utilizing weight resistance
C482S094000, C482S108000
Reexamination Certificate
active
06540650
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to weight selection methods and apparatus which are suitable for use on various types of exercise equipment, including free weight barbells and dumbbells.
BACKGROUND OF THE INVENTION
Certain exercise apparatus and/or methods have been developed to facilitate relatively more convenient weight adjustments. Relatively recent developments in the dumbbell category, for example, have made it easier to add or remove weight plates relative to a handle assembly. Examples of such improvements are disclosed in U.S. Pat. Nos. 5,839,997 and 6,033,350. An object of the present invention is to improve these sorts of methods and apparatus by reducing the possibility of the weight plates becoming disengaged during exercise activity.
SUMMARY OF THE INVENTION
The present invention provides locking arrangements to prevent inadvertent or ill-advised weight selection operations whenever a weight carrying member is removed from a base which supports any “unselected” weight plates. Many of the features and/or advantage of the present invention will become apparent from the more detailed description that follows.
REFERENCES:
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patent: 4610449 (1986-09-01), Diercks, Jr.
patent: 5123885 (1992-06-01), Shields
patent: 5284463 (1994-02-01), Shields
patent: 5556362 (1996-09-01), Whipps
patent: 5876313 (1999-03-01), Krull
patent: 6083144 (2000-07-01), Towley et al.
patent: 6224519 (2001-05-01), Doolittle
Donnelly Jerome W.
Hwang Victor
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