Collapsible bag for impact absorbing activities and method of ma

Details Collapsible bag for impact absorbing activities and method of ma Collapsible bag for impact absorbing activities and method of ma

1976-04-05

1978-08-01

Marlo, George J.

Undertaking

273 55A, 273DIG20, A63B 6700, A63B 6900

Patent

active

041038894

ABSTRACT:
A collapsible bag is disclosed which when expanded is capable of sustaining and absorbing impact and which is suitable for use in physical conditioning activities such as karate punching and kicking techniques. An elongate flexible casing is provided which is supportable at one end. A collapsible envelope, which may be an inflatable air bladder, is disposed within the casing. A portion of the exterior surface of the bladder defines a cavity or recess for receiving a weighting material. Sufficient weighting material is disposed in the cavity to impart to the bag a desired impact absorption characteristic. The bladder is inflated by the user of the bag to cause the bag to be hardened to a desired level.

REFERENCES:
patent: 124588 (1872-03-01), Kehoe
patent: 2197545 (1940-04-01), Bachman et al.
patent: 2203259 (1940-06-01), Gilman
patent: 3111317 (1963-11-01), Cituk

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