Adjustable dumbbell apparatus

Details Adjustable dumbbell apparatus Adjustable dumbbell apparatus

1980-12-01

1982-08-24

Pinkham, Richard C.

Undertaking

272143, 272DIG4, A63B 2106

Patent

active

043457568

ABSTRACT:
An adjustable dumbbell apparatus is disclosed which is particularly adapted to maintain the arms of the exerciser in a straight orientation when used with weighted members which includes a circumferential member defining a hole therethrough through which the arm of the exerciser is adapted to extend. A first and second strut are fixedly secured to the circumferential member to be parallel with respect to the hole therein and extend upwardly therefrom. A grip extends between the upper ends of the struts such that the user can grasp this grip when his arm is extending through the hole in the circumferential member. A weighted support bar is adapted to extend outwardly from the circumferential member and is fixedly secured thereto. The weighted support member extends outwardly perpendicular approximately with respect to the axis of the hole in such a fashion as to use the weights when placed on the weight support member to urge the arm of the exerciser into the straight orientation. Alternatively, a collar may be threadably securable to the externally threaded bar of the weight support member to facilitate securement of weighted members thereto. Also alternatively, the individual struts may be formed of an outer tubular member and an inner member which telescopically moves with respect to one another to adjust the distance between the circumferential member and the grip.

REFERENCES:
patent: 734062 (1903-07-01), Harris
patent: 1333005 (1920-03-01), Warner
patent: 2617650 (1952-11-01), Landis
patent: 2819081 (1958-01-01), Touraine
patent: 4039183 (1977-08-01), Sakurada
patent: 4109908 (1978-08-01), Pugh et al.
patent: 4231569 (1980-11-01), Rae

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