Boots – shoes – and leggings
Patent
1991-06-07
1994-04-26
Teska, Kevin J.
Boots, shoes, and leggings
60443, 415144, G01F 110
Patent
active
053072880
ABSTRACT:
A fluid flow production and control system includes a variable speed pump defining a fluid flow path therethrough and a fluid flow path outlet, for operating at a speed determined by an input speed control signal. Also included is a pressure sensor for detecting the pressure of fluid at the outlet, and a flow rate sensor for detecting the flow rate of fluid at the outlet. One or more dimensional parameters of the flow path, such as the cross-sectional area, venting ports along the direction of the flow path, and the like, may be varied in response to a parameter control signal. A control unit coupled to the pressure sensor and flow rate sensor and responsive to detected pressures and flow rates supplies an input speed control signal to the pump and a parameter control signal to the dimensional parameter varying mechanism to thereby produce a selected flow rate and fluid pressure at the outlet.
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patent: 4951224 (1990-08-01), Hokynar
Peeso Thomas
Teska Kevin J.
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