US Patent No: 5,215,111

Number of patents in Portfolio can not be more than 2000

Method of performance improvement for an I/P servo




Loading Importance Indicators... loading....


See full text

A pneumatic servo comprises a motor having a shaft for rotation in response to an electrical signal. A cam is connected to the shaft for rotation therewith. The cam has an outer profiled periphery and opposite sides. A pneumatic nozzle having an opening for directing a flow of gas toward one side of the cam near the periphery, obscures the flow by different amounts as the cam rotates to create a back pressure in the nozzle comprising a pneumatic signal. A curved projection engages an opposite side of the cam, the projection being aligned with the nozzle opening and reducing oscillation excursions of the servo at gas pressures in the nozzle of above 12 psi.

Loading the Abstract Image... loading....

First Claim

See full text


Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]


Inventor Name Address # of filed Patents Total Citations
Dippert, Raymond J Cleveland, OH 1 0
Hall, II George R Geneva, OH 13 114
Smith, James M Eastlake, OH 21 289
Stevenson, Thomas E Willoughby Hills, OH 3 21

Cited Art Landscape

Patent Info (Count) # Cites Year
Elsag International B.V. (1)
* 4,610,263 Pneumatic servo assembly for an electro pneumatic converter 4 1985
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

  • No Forward Cites to Display