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  • 1
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    Unknown
    Dual motion valve with single motion input (1987)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A dual motion valve includes two dual motion valve assemblies with a rotary input which allows the benefits of applying both rotary and axial motion to a rotary sealing element with a plurality of ports. The motion of the rotary sealing element during actuation provides axial engagement of the rotary sealing element with a stationary valve plate which also has ports. Fluid passages are created through the valve when the ports of the rotary sealing element are aligned with the ports of the stationary valve plate. Alignment is achieved through rotation of the rotary sealing element with respect to the stationary valve plate. The fluid passages provide direct paths which minimize fluid turbulence created in the fluid as it passes through the valve.
    Keywords: MECHANICAL ENGINEERING
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Optical pantograph (1976)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: An optical pantograph for directing light beams and the like from a source to a receiver according to the movement of a pointer. The device can be used for, among other things, directing a laser beam and the like to a target for etching patterns on a target according to the movement of a pointer relative to a pattern trace.
    Keywords: Optics
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Remotely controllable mixing system (1987)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A remotely controllable mixing system (210) in which a plurality of mixing assemblies (10a-10e) are arranged in an annular configuration, and wherein each assembly (10) employs a central chamber (16) and two outer, upper and lower, chambers (12, 14). Valves (18, 20) are positioned between chambers, and these valves (18, 20) for a given mixing assembly (10) are operated by upper and lower control rotors (29), which in turn are driven by upper and lower drive rotors (270, 270b). Additionally, a hoop (278) is compressed around upper control rotors (29) and a hoop (278b) is compressed around lower control rotors (29) to thus insure constant frictional engagement between all control rotors (29) and drive rotors (270, 270b). The drive rollers (270, 270b) are driven by a motor (213).
    Keywords: Mechanical Engineering
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Low-Turbulence Valve (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Valve opens and closes ports without introducing significant turbulence to fluid passing through. Developed for experiment involving mixing of solutions by diffusion. Allows diffusion of contents between adjacent chambers with minimum turbulent mixing. Holes in valve plates rotated clockwise into alignment to open valve and counterclockwise out of alignment to close valve. Stopping pin limits overall rotation to 120 degrees for opening and closing.
    Keywords: MECHANICS
    Type: MFS-28058 , NASA Tech Briefs (ISSN 0145-319X); 11; 4; P. 59
    Format: text
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    NASA TECHNICAL REPORTS
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