Patents by Inventor Rudolph Progl

Rudolph Progl 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).

  • Lubricating - oil pump control
    Patent number: 5032067
    Abstract: The invention is directed to a motor-driven apparatus such as a motor-driven chain saw and the like having a lubricating oil pump having a piston which rotates about its central axis and an oil supply for a work tool. There is also a control means containing a rotating piston having cam member on the piston interacting with a control pin member which acts as a cam follower. There is provided means for adjusting the percentage of contact made between the cam member and the cam follower per revolution of the pumping member.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: July 16, 1991
    Assignee: Textron Inc.
    Inventor: Rudolph Progl
  • Lubricating-oil pump control
    Patent number: 4968230
    Abstract: The invention is directed to a motor-driven apparatus such as a motor-driven chain saw and the like having a lubricating-oil pump and an oil supply for a work tool and to apparatus for varying the reciprocatory stroke distance of the oil piston or pumping member to thereby provide selective regulation of oil flow from full flow to through no flow in response to the stroke distance of the pumping member.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: November 6, 1990
    Assignee: Textron Inc.
    Inventor: Rudolph Progl