Rotary pistons

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7118361
APP PUB NO 20050254983A1
SERIAL NO

10845171

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Abstract

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A rotary piston for use in pumps or motors, the piston having a radially movable vanes seated within the pumps rotor. The vanes are biased outwardly and forced inwardly by a cam action of the interior wall of the housing of the piston. Operation of the piston may be facilitated by the use of peripherally mounted drive gears. The rotary piston according to the present invention is particularly useful in pumping fluids and provides a system that can operate at both high and low speeds for a wide range of liquid viscosities.

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Patent Owner(s)

Patent OwnerAddress
1564330 ONTARIO INCP O BOX 668 SEAFORTH ONTARIO N0K 1W0

International Classification(s)

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  • 2004 Application Filing Year
  • F01C Class
  • 173 Applications Filed
  • 44 Patents Issued To-Date
  • 25.44 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2004200520062007200820092010201120120255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Patterson, Albert W West Lorne, CA 18 75

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Patent Citation Ranking

  • 4 Citation Count
  • F01C Class
  • 5.97 % this patent is cited more than
  • 19 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges45011201 - 1011 - 2021 - 3002.557.51012.51517.52022.52527.53032.53537.54042.54547.55052.5

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