Patents by Inventor Paul E. Lenker

Paul E. Lenker 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).

  • Method of manufacture of certain hand wrenches and the like
    Patent number: 4274309
    Abstract: A method of manufacturing hand wrenches having a relatively long handle attached at one end to a yoke pivotally carrying the housing of a ratcheting socket drive mechanism fabricates the yoke, instead of casting or forging it, and employs a separate ferrule at the joint between the handle and the yoke, the parts being held in assembled relation and rotated while during a two step operation weld metal is deposited between the ferrule and the yoke, the legs of the yoke at the same time being compressed upon the ratchet housing.
    Type: Grant
    Filed: February 22, 1980
    Date of Patent: June 23, 1981
    Inventor: Paul E. Lenker
  • Ratchet wrench with double swivelling drive shaft
    Patent number: 4108027
    Abstract: The socket drive shaft of a ratchet type wrench is slidable to project from either side of the wrench to receive a socket. The drive shaft itself is formed in a generally "hour-glass" shape so that the shaft can swivel relative to the wrench and simultaneously a socket can swivel relative to the shaft.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: August 22, 1978
    Assignee: Davenport Tool Co.
    Inventor: Paul E. Lenker
  • Plier type ratchet wrench
    Patent number: 3941017
    Abstract: A plier-type ratchet wrench of simple, economical and robust construction employs a single rigid thrust rod or bar to operate the ratchet drive and a single extensible helical spring which both biases the operating handle to its normal position and keeps the thrust rod and a pawl engaged with the ratchet.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: March 2, 1976
    Assignee: Davenport Tool Co.
    Inventors: Paul E. Lenker, Raymond G. Voss