patentgrep
SearchCompaniesTechnologiesAPIPricingDocs
DocsGet an API key
  1. Technology classes
  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 2/00 · Rotary-piston machines or pumps
  6. /F04C 2/02 · Rotary-piston machines or pumps: of arcuate-engagement type, i.e. with circular translatory movement
  7. /F04C 2/063 · With coaxially-mounted members having continuously-changing circumferential spacing between them
  8. /F04C 2/067
F04C 2/067

Having cam-and-follower type drive

Official title: having cam-and-follower type drive

F04C2/067 (Having cam-and-follower type drive) appears on 5 US grants and 3 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 2/00Rotary-piston machines or pumps
  5. F04C 2/02Rotary-piston machines or pumps: of arcuate-engagement type, i.e. with circular translatory movement
  6. F04C 2/063With coaxially-mounted members having continuously-changing circumferential spacing between them
  7. F04C 2/067Having cam-and-follower type drive
Granted patents
5
Published applications
3
Assignees
1
Inventors
3
Latest grant
13 Jan 2026

Filings by year

Granted patentsPublished applications
F04C 2/067: granted patents and published applications per publication year
YearGranted patentsPublished applications
198910
199000
199100
199200
199300
199400
199500
199600
199700
199800
199900
200000
200100
200200
200300
200400
200500
200600
200700
200800
200900
201000
201100
201200
201300
201400
201500
201601
201700
201810
201900
202000
202100
202200
202300
202411
202511
202610

19891999200920192026

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Recent patents

  • Bidirectional rotary hydraulic motor and pump13 Jan 2026US 12,523,153 B2
  • Bidirectional rotary hydraulic motor and pump11 Mar 2025US 12,247,489 B2
  • Bidirectional rotary hydraulic motor and pump9 Apr 2024US 11,952,899 B1
  • Multiple vane roto-dynamic variable displacement kinetic system27 Feb 2018US 9,903,204 B2
  • Rotary pump having alternating pistons controlled by non-circular gears10 Oct 1989US 4,872,818 AMitsubishi Denki Kabushiki Kaisha
  • Bidirectional Rotary Hydraulic Motor and Pump29 May 2025US 2025/0172068 A1
  • Bidirectional Rotary Hydraulic Motor and Pump13 Jun 2024US 2024/0191625 A1
  • A multiple vane roto-dynamic variable displacement kinetic system27 Oct 2016US 2016/0312611 A1

Most cited

By later US patents
  • Rotary pump having alternating pistons controlled by non-circular gears4US 4,872,818 AMitsubishi Denki Kabushiki Kaisha · 1989
  • Bidirectional rotary hydraulic motor and pump2US 11,952,899 B12024

Top assignees

Documents
  • Mitsubishi Denki Kabushiki Kaisha1

Often classified with

  • F01CRotary-piston or oscillating-piston machines or engines7
  • F03CPositive-displacement engines driven by liquids5
  • Y02EClean energy generation and storage5
  • Y02PLow-carbon manufacturing5
  • F02BInternal-combustion piston engines3

Documents that also carry the other class.

patentgrep

Search every US patent grant since 1976 and every published application since 2001. Updated weekly from USPTO.

Product

  • Search
  • New this week
  • Where the data comes from
  • Pricing

Browse

  • Companies
  • Technology classes

Developers

  • API docs
  • PatentsView-compatible API
  • MCP server
  • Changelog

About

  • Privacy
  • Terms
© 2026 patentgrepData from USPTO bulk files