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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 15/00 · Component parts, details or accessories of machines, pumps or pumping installations, not
  6. /F04C 15/0003 · Sealing arrangements in rotary-piston machines or pumps
  7. /F04C 15/0007 · Radial sealings for working fluid
  8. /F04C 15/0011
F04C 15/0011

Of rigid material

Official title: {of rigid material}

F04C15/0011 (Of rigid material) appears on 4 US grants and 9 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 15/00Component parts, details or accessories of machines, pumps or pumping installations, not
  5. F04C 15/0003Sealing arrangements in rotary-piston machines or pumps
  6. F04C 15/0007Radial sealings for working fluid
  7. F04C 15/0011Of rigid material
Granted patents
4
Published applications
9
Assignees
8
Inventors
23
Latest grant
1 Jul 2025

Filings by year

Granted patentsPublished applications
F04C 15/0011: granted patents and published applications per publication year
YearGranted patentsPublished applications
200501
200600
200700
200811
200900
201011
201101
201201
201300
201400
201501
201600
201701
201800
201900
202000
202100
202201
202300
202411
202510

200520152025

By publication year.

Recent patents

  • Non-lubricated compressor with abradable sealing element and related method for assembling it1 Jul 2025US 12,345,262 B2Atlas Copco Airpower, Naamloze Vennootschap
  • Fluid transfer apparatus3 Dec 2024US 12,158,149 B2Korea Atomic Energy Research Institute
  • Vane pump23 Mar 2010US 7,682,226 B2Albert Handtmann Maschinenfabrik GmbH & Co. KG
  • Friction reducing seal ring for gear pump25 Mar 2008US 7,347,678 B1
  • Non-lubricated compressor with abradable sealing element and related method for assembling it26 Dec 2024US 2024/0426300 A1Atlas Copco Airpower, Naamloze Vennootschap
  • Fluid transfer apparatus28 Apr 2022US 2022/0127997 A1Korea Atomic Energy Research Institute
  • Free rotary fluid machine7 Dec 2017US 2017/0350250 A1
  • Scroll compressor5 Nov 2015US 2015/0316054 A1LG Electronics Inc.
  • Cam liner profile21 Jun 2012US 2012/0156077 A1Hamilton Sundstrand Corporation

Most cited

By later US patents
  • Vane pump2US 7,682,226 B2Albert Handtmann Maschinenfabrik GmbH & Co. KG · 2010
  • Non-lubricated compressor with abradable sealing element and related method for assembling it1US 12,345,262 B2Atlas Copco Airpower, Naamloze Vennootschap · 2025

Top assignees

Documents
  • AHAlbert Handtmann Maschinenfabrik GmbH & Co. KG2
  • ACAtlas Copco Airpower, Naamloze Vennootschap2
  • KAKorea Atomic Energy Research Institute2
  • 55iTech, LLC1
  • GEGeneral Electric Company1
  • HSHamilton Sundstrand Corporation1
  • LELG Electronics Inc.1
  • RMRobbins & Myers Energy Systems L.P.1

Often classified with

  • F01CRotary-piston or oscillating-piston machines or engines7
  • F05CIndexing scheme relating to materials, material properties or material characteristics for machines3
  • A22CProcessing meat, poultry, or fish2
  • F02BInternal-combustion piston engines2
  • F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to2
  • F03CPositive-displacement engines driven by liquids1

Documents that also carry the other class.

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