Motors: spring – weight – or animal powered – Spring – With winding means
Patent
1975-01-31
1976-04-06
Herrmann, Allan D.
Motors: spring, weight, or animal powered
Spring
With winding means
188266, 267156, F03G 100
Patent
active
039483550
ABSTRACT:
A variable retracting device comprising a collapsible elongated tubular element providing a cavity therealong for receiving fluid therein and having first and second ends. A fluid reservoir means communicates with the cavity of the tubular element at its first end and has control means for regulating the flow of fluid between the cavity of the tubular element and the reservoir means. A restricting means engages and collapses the tubular element at locations between its first and second ends and is movable along the collapsed portion of the tubular element up to the uncollapsed portion containing fluid. An activating means urges the relative movement of the restricting means along and towards the first end of the tubular element creating a fluid pressure in the uncollapsed portion of the tubular element, whereby the relative movement of the restricting means along and towards the first end of the tubular element takes place with the collapse of the tubular element at the location of the restricting means and at a rate depending upon the flow of fluid from the cavity of the tubular element to the fluid reservoir means and regulated by the control means of the fluid reservoir means.
REFERENCES:
patent: 2688150 (1954-09-01), Roussel
patent: 3078966 (1963-02-01), Thomas
patent: 3103034 (1963-09-01), Fisher
patent: 3561570 (1971-02-01), Sundermann
patent: 3581774 (1971-06-01), Oeland, Jr.
Herrmann Allan D.
Trachtman Jacob
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