Patents by Inventor Martin Pahrisch

Martin Pahrisch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Diaphragm spring for a friction clutch
    Patent number: 6918479
    Abstract: A diaphragm spring for a friction clutch includes a ring-like body area and a plurality of spring tongues arranged at the inner edge in a row in a circumferential direction and extending radially inward from the body area. Openings are formed between adjacent spring tongues, each opening having a radially outer base area, at least one of the openings being limited in the circumferential direction by a wall area having a curvature which increases as the wall proceeds from the base area.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: July 19, 2005
    Assignee: ZF Sachs AG
    Inventors: Martin Pahrisch, Ronald Beck, Alfred Schraut, Erwin Ziegler, Frank Hirschmann
  • Diaphragm spring for a friction clutch
    Patent number: 6877596
    Abstract: A diaphragm spring for a friction clutch includes a ring-like body area and a plurality of spring tongues arranged in a row in the circumferential direction and extending radially inward from the body area. A stiffening rib formed in at least one of the spring tongues extends radially into the body area.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: April 12, 2005
    Assignee: ZF Sachs AG
    Inventors: Martin Pährisch, Ronald Beck, Alfred Schraut, Erwin Ziegler, Frank Hirschmann
  • Diaphragm spring for a friction clutch
    Publication number: 20040069588
    Abstract: A diaphragm spring for a friction clutch includes a ring-like body area and a plurality of spring tongues arranged in a row in the circumferential direction and extending radially inward from the body area. A stiffening rib formed in at least one of the spring tongues extends radially into the body area.
    Type: Application
    Filed: August 11, 2003
    Publication date: April 15, 2004
    Applicant: ZF Sachs AG
    Inventors: Martin Pahrisch, Ronald Beck, Alfred Schraut, Erwin Ziegler, Frank Hirschmann
  • Diaphragm spring for a friction clutch
    Publication number: 20040069589
    Abstract: A diaphragm spring for a friction clutch includes a ring-like body area and a plurality of spring tongues arranged at the inner edge in a row in a circumferential direction and extending radially inward from the body area. Openings are formed between adjacent spring tongues, each opening having a radially outer base area, at least one of the openings being limited in the circumferential direction by a wall area having a curvature which increases as the wall proceeds from the base area.
    Type: Application
    Filed: August 11, 2003
    Publication date: April 15, 2004
    Applicant: ZF Sachs AG
    Inventors: Martin Pahrisch, Ronald Beck, Alfred Schraut, Erwin Ziegler, Frank Hirschmann