A rotor type pump is provided. A rotor rotates and closely contacts an inner surface of a chamber, and a cam controls a sealing part, so that during a compression procedure, the sealing part, a convex surface of the rotor, and an inner surface of the chamber form a substantially hermetic space, and when a gas in the chamber …

Legal parties

Inventors (applicants): Pang-Chian Lio
Agents: WPAT, P.C. (attorney), Anthony King (attorney)

The application was examined by Theresa Trieu (USPTO dept. 3748)


  • 1. A rotor type pump, comprising: …
  • 2. The rotor type pump according to claim 1 , wherein the body further comprises …
  • 3. The rotor type pump according to claim 1 , wherein the body comprises two accommodating …

International priority data

CN: 2009 1 0174216 / Sep. 23, 2009 (national)

Cited documents


  • Jaworowski US 1698815 A / 418/60, Jan. 1, 1929
  • CN 2767709 Y, Mar. 1, 2006
  • Chavous US 151472 A / 418/243, Jun. 1, 1874
  • Matsumoto et al. US 6824367 B2 / 418/11, Nov. 1, 2004
  • Belcher US 3649141 A / 418/249, Mar. 1, 1972
  • JP 63189684 A / 418/243, Aug. 1, 1988
  • Teal US 154298 A / 418/212, Aug. 1, 1874
  • CN 101105174 A, Jan. 1, 2008
  • EP 0008531 A1, Mar. 1, 1980
  • Rinehart US 3813193 A / 418/63, May. 1, 1974
  • CN 2156304 Y, Feb. 1, 1994
  • Eley US 6729864 B2 / 418/243, May. 1, 2004
  • CN 2558791 Y, Jul. 1, 2003

Brief Description of the Drawings

FIG. 1A is an axial cross-sectional view of a rotor type pump according to a first embodiment of the present invention; FIG. 1B is a cross-sectional view along 1B-1B …


Background of the Invention

1. Field of the Invention The present invention relates to a rotor type pump, and more particularly to a rotating rotor type pump. 2. Description of the Related Art High …

Preferred Embodiment of the Present Invention

In order to make technical features, objectives, and effects of the present invention more comprehensible, a detailed description of the present invention is given below by reference to the accompanying …

More details about Rotor Type Pump

Miscellaneous patent data

The exemplary claims include number 1, includes the following drawings: Cross-sectional view along 1C-1C in FIG., cross-sectional view of a rotor, Rotor Type Pump, Cross-sectional view along 1B-1B in FIG., the application was published on Aug. 27, 2010, the invention is titled Rotor Type Pump, the patent was granted on Apr. 1, 2014, similar patents are classified under having the characteristics covered by two or more of groups F03C 2/02, F03C 2/08, F03C 2/22, F03C 2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members, Rotary-piston engines, Encompassing moving member interconnects plural vanes, in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders, Multiple units, Distribution members specially adapted for multiple-cylinder engines, Outer cylinder member immersed or submerged in non-working fluid, Rotor has one more lobe than cylinder, Abutment position adjustment, cylinders in star- or fan-arrangement, categorized under Seal element between working member and cylinder as a primary classification, claims 1-15 comprise the invention scope, the grant number is 08684713 (publication number), the invention details are shown in 13 figures, the patent is illustrated by 11 drawings, the applicant's name is Lio Pang-Chian, the known inventor's name is Lio Pang-Chian, the patent particularly claims a rotor type pump, comprising…, the published agent's organization is WPAT, P.C., the patent was extended by 175 days, the application number is 13/381,527 (U.S.), developed by Pang-Chian Lio, an application examiner - Theresa Trieu (3748 USPTO department).

Invention classification information

The invention is classified under Oscillating-piston engines, Seal element between working member and cylinder, Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C 2/00-F04C 14/00, Miscellaneous, Positively Actuated Abutment, Rotary-piston machines or pumps, Sliding abutment, Spring or fluid biased in opposite direction, With relatively movable partition member. The designated search classifications include Fluid biased, Weight Balanced Working Member or Partition, Positively Actuated Abutment, Rotating inner working or reacting member repositioned relative to cylinder, Sliding abutment, Seal element between working member and cylinder, Miscellaneous, Spring or fluid biased in opposite direction, With relatively movable partition member, Multistage.

Patent details
Publication number 08684713
Publication date Apr. 1, 2014
Kind code B2
Application number 13/381,527
Application date Aug. 27, 2010
Application type U
Application series code 13
Int. pub. country WO
Int. pub. number WO2011/035677
Int. publication Mar. 31, 2011
Int. filing country WO
Int. filing PCT/CN2010/076415
Filed internationally Aug. 27, 2010
National stage date Dec. 29, 2011
Extension term 175
National classification 418/140
Total number of claims 15
Exemplary claims 1
Number of drawings 11
Number of figures 13
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