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  2. /F · Mechanical engineering
  3. /F04 · Positive - displacement machines for liquids
  4. /F04C · Rotary-piston, or oscillating-piston, positive-displacement machines for liquids
  5. /F04C 18/00 · Rotary-piston pumps specially adapted for elastic fluids
  6. /F04C 18/02 · Rotary-piston pumps specially adapted for elastic fluids: of arcuate-engagement type, i.e. with
  7. /F04C 18/063 · With coaxially-mounted members having continuously-changing circumferential spacing between them
  8. /F04C 18/077
F04C 18/077

Having toothed-gearing type drive

Official title: having toothed-gearing type drive

F04C18/077 (Having toothed-gearing type drive) appears on 4 US grants and 4 published applications in this corpus.

Search patents in F04C

Where it sits

  1. FMechanical engineering
  2. F04Positive - displacement machines for liquids
  3. F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids
  4. F04C 18/00Rotary-piston pumps specially adapted for elastic fluids
  5. F04C 18/02Rotary-piston pumps specially adapted for elastic fluids: of arcuate-engagement type, i.e. with
  6. F04C 18/063With coaxially-mounted members having continuously-changing circumferential spacing between them
  7. F04C 18/077Having toothed-gearing type drive
Granted patents
4
Published applications
4
Assignees
2
Inventors
7
Latest grant
25 Jul 2023

Filings by year

Granted patentsPublished applications
F04C 18/077: granted patents and published applications per publication year
YearGranted patentsPublished applications
201601
201700
201801
201900
202000
202111
202201
202330

20162017201820192020202120222023

By publication year.

Recent patents

  • Handheld high-pressure cleaning machine25 Jul 2023US 11,708,822 B2Positec Power Tools (Suzhou) Co., Ltd.
  • Annular compression system and a method of operating the same25 Jul 2023US 11,708,840 B1University of Regina
  • Pump unit and handheld high pressure washer25 Jul 2023US RE49,589 E1Positec Power Tools (Suzhou) Co., Ltd.
  • Pump unit and handheld high pressure washer6 Apr 2021US 10,968,899 B2Positec Power Tools (Suzhou) Co., Ltd.
  • Rotary Piston Machine and Method for Producing a Seal in a Rotary Piston Machine6 Jan 2022US 2022/0003117 A1
  • Handheld high-pressure cleaning machine24 Jun 2021US 2021/0190048 A1Positec Power Tools (Suzhou) Co., Ltd.
  • Pump unit and handheld high pressure washer15 Nov 2018US 2018/0328349 A1Positec Power Tools (Suzhou) Co., Ltd.
  • Friction-free Rotary Piston Scissor Action Motor / Hot Air Energy Generator15 Dec 2016US 2016/0363113 A1

Most cited

By later US patents
  • Pump unit and handheld high pressure washer1US 10,968,899 B2Positec Power Tools (Suzhou) Co., Ltd. · 2021

Top assignees

Documents
  • PPPositec Power Tools (Suzhou) Co., Ltd.5
  • URUniversity of Regina1

Often classified with

  • B08BCleaning in general5
  • F04BPositive-displacement machines for liquids5
  • B05BSpraying apparatus4
  • F01CRotary-piston or oscillating-piston machines or engines3
  • F01DNon-positive displacement machines or engines1
  • F03GSpring, weight, inertia or like motors1
  • F04DNon-positive-displacement pumps1
  • F05CIndexing scheme relating to materials, material properties or material characteristics for machines1
  • F16JPistons1
  • Y02EClean energy generation and storage1

Documents that also carry the other class.

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