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Michel A. Pierrat

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  • Andover, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Counterweight for orbital drive mechanism
    • Patent number 4,524,644
    • Issue date Jun 25, 1985
    • Michel A. Pierrat
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Speed reducer and method for reducing blacklash
    • Patent number 4,487,091
    • Issue date Dec 11, 1984
    • Michel A. Pierrat
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Log splitter
    • Patent number 4,377,190
    • Issue date Mar 22, 1983
    • Michel A. Pierrat
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Log splitter with counter-balanced wedge assembly
    • Patent number 4,357,973
    • Issue date Nov 9, 1982
    • Michel A. Pierrat
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Log splitter with improved clamp
    • Patent number 4,314,591
    • Issue date Feb 9, 1982
    • Michel A. Pierrat
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Linear seal apparatus
    • Patent number 4,309,040
    • Issue date Jan 5, 1982
    • Ferrofluidics Corporation
    • Michel A. Pierrat
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Log splitter with protection against twisting moments
    • Patent number 4,300,605
    • Issue date Nov 17, 1981
    • Michel A. Pierrat
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Log splitter with overload protection
    • Patent number 4,293,012
    • Issue date Oct 6, 1981
    • Michel A. Pierrat
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Linear drive shaft seal
    • Patent number 4,284,605
    • Issue date Aug 18, 1981
    • Ferrofluidics Corporation
    • Michel A. Pierrat
    • C30 - CRYSTAL GROWTH
  • Information Patent Grant

    Orbital drive mechanism
    • Patent number 4,117,746
    • Issue date Oct 3, 1978
    • Compudrive Corporation
    • Michel A. Pierrat
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Cam-type gearing and the like
    • Patent number 4,052,928
    • Issue date Oct 11, 1977
    • COMPUDRIVE Corporation
    • Michel A. Pierrat
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Mechanical drives
    • Patent number 3,998,112
    • Issue date Dec 21, 1976
    • Compudrive Corporation
    • Michel A. Pierrat
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...