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Title: Rotary pneumatic valve

Abstract

A rotary pneumatic valve which is thrust balanced and the pneumatic pressure developed produces only radial loads on the valve cylinder producing negligible resistance and thus minimal torque on the bearings of the valve. The valve is multiplexed such that at least two complete switching cycles occur for each revolution of the cylinder spindle.

Inventors:
 [1]
+ Show Author Affiliations
  1. (Albuquerque, NM)
Publication Date:
Research Org.:
AT & T CORP
OSTI Identifier:
867679
Patent Number(s):
US 4986307
Assignee:
United States of America as represented by United States (Washington, DC) SNL
DOE Contract Number:
AC04-76DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
rotary; pneumatic; valve; thrust; balanced; pressure; developed; produces; radial; loads; cylinder; producing; negligible; resistance; minimal; torque; bearings; multiplexed; complete; switching; cycles; occur; revolution; spindle; valve cylinder; pneumatic valve; rotary pneumatic; radial load; /137/

Citation Formats

Hardee, Harry C. Rotary pneumatic valve. United States: N. p., 1991. Web.
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Hardee, Harry C. Rotary pneumatic valve. United States.
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Hardee, Harry C. Tue . "Rotary pneumatic valve". United States. doi:. https://www.osti.gov/servlets/purl/867679.
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@article{osti_867679,
title = {Rotary pneumatic valve},
author = {Hardee, Harry C.},
abstractNote = {A rotary pneumatic valve which is thrust balanced and the pneumatic pressure developed produces only radial loads on the valve cylinder producing negligible resistance and thus minimal torque on the bearings of the valve. The valve is multiplexed such that at least two complete switching cycles occur for each revolution of the cylinder spindle.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}
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  • This patent describes a rotary valve for high-frequency, low-torque application. It comprises a housing including at least one pair of opposing gas inlet and gas exhaust conduits, a valve spindle having at least one bearing at each of first and second ends thereof and provided with at least one pair of opposing slots which upon rotation align with the inlet and exhaust gas conduits respectively, a gap between the interior of the housing and the exterior of the spindle, maintained by the bearings, for separating the spindle from the housing and for centering the spindle inside the housing, and amore » spindle shaft for rotating the valve spindle, wherein the alignment of the at least one pair of gas inlet and gas exhaust conduits in the housing and the at least one pair of opposing slots in the valve spindle occurs sequentially in response to rotations of the valve spindle such that the rotary valve provides at least two complete switching cycles for every rotation of the valve spindle.« less

  • A rotary pneumatic valve which is thrust balanced and the pneumatic pressure developed produces only radial loads on the valve cylinder producing negligible resistance and thus minimal torque on the bearings of the valve. The valve is multiplexed such that at least two complete switching cycles occur for each revolution of the cylinder spindle. 4 figs.

  • ;
    This patent describes a rotary engine. It has a housing, a crankshaft and a three-sided rotor rotatable therein and coupled to the crankshaft. The housing defining an inner running surface having a two-lobbed epitrochoidal profile defined by a minor axis and a major axis. The housing having an air intake port and a fuel intake port. The fuel intake port extends radially through a portion of the running surface near the end of the major axis towards the air intake port. It includes a supply of gaseous fuel; and a valve for controlling communication of the gaseous fuel to themore » fuel intake port.« less

  • ;
    An internal combustion engine has rotary valves associated with movable shutters operable to vary the closing of intake air/fuel port sections to obtain peak volumetric efficiency over the entire range of speed of the engine. The shutters are moved automatically by a control mechanism that is responsive to the RPM of the engine. A foot-operated lever associated with the control mechanism is also used to move the shutters between their open and closed positions. 21 figs.

  • ;
    An internal combustion engine has rotary valves associated with movable shutters operable to vary the closing of intake air/fuel port sections to obtain peak volumetric efficiency over the entire range of speed of the engine. The shutters are moved automatically by a control mechanism that is responsive to the RPM of the engine. A foot-operated lever associated with the control mechanism is also used to move the shutters between their open and closed positions.