Dumbbell set with quick release plates

Details Dumbbell set with quick release plates Dumbbell set with quick release plates

1998-11-02

2000-03-21

Mulcahy, J.

Exercise devices

User manipulated force resisting apparatus, component...

Utilizing weight resistance

482104, 482108, A63B 21075

Patent

active

060396784

ABSTRACT:
A dumbbell system including at least one dumbbell having a handle bar being a tube with an internal thread with a stop plate abutting each end of the handle bar. Each stop plate has a central aperture such that the interior passage of said tube opens up through each stop plate. A threaded shaft screws into each end of the tube through the respective stop plate. Weight plates, each having a slot are stacked onto the threaded shaft and when the threaded shaft is screwed into the tube, the knob end of the shaft tightens the weight stack against the stop plate. A rack is provided for storing the weight plates and facilitating removal and mounting weight plates

REFERENCES:
patent: 1672944 (1928-06-01), Jowett
patent: 1991520 (1935-02-01), Postl
patent: 3825253 (1974-07-01), Speyer
patent: 4861025 (1989-08-01), Rockwell
patent: 5839997 (1998-11-01), Roth et al.
Bodybuilder's Discount Outlet Summer 1995 Catalog p. 20. Showing Power Block Selectorized Dumbbells & Stand, 1994.

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