Patents by Inventor Klaus Prach

Klaus Prach 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).

  • Patent number: 10267220
    Abstract: A portable work apparatus has a drive motor and a housing which is formed at least partially by a housing part. The work apparatus has an operating fluid tank which is formed separately from the housing part and which has a cavity for receiving operating fluid. The operating fluid tank has a first portion which is arranged in a receptacle of the housing part, and a second portion which at least partially delimits the cavity and which protrudes from the receptacle. Provision is made for the operating fluid tank to be fixed to the housing part by at least one fastener, and for the receptacle to be delimited at least partially by a plurality of ribs of the housing part that are arranged at a spacing (f) from one another.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: April 23, 2019
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Thomas Hilt, Klaus Prach, Thomas Stark
  • Publication number: 20170016450
    Abstract: A portable work apparatus has a drive motor and a housing which is formed at least partially by a housing part. The work apparatus has an operating fluid tank which is formed separately from the housing part and which has a cavity for receiving operating fluid. The operating fluid tank has a first portion which is arranged in a receptacle of the housing part, and a second portion which at least partially delimits the cavity and which protrudes from the receptacle. Provision is made for the operating fluid tank to be fixed to the housing part by at least one fastener, and for the receptacle to be delimited at least partially by a plurality of ribs of the housing part that are arranged at a spacing (f) from one another.
    Type: Application
    Filed: July 12, 2016
    Publication date: January 19, 2017
    Inventors: Thomas Hilt, Klaus Prach, Thomas Stark
  • Patent number: 6552891
    Abstract: The invention relates to a portable handheld work apparatus which is driven by a drive motor (1) having electrical ground (4). The drive motor (1) is configured especially as a spark-ignition engine (2). The work apparatus includes handles (5, 33) of electrically insulating material. A grounding element (6) is provided in the surface of the handle and this grounding element is conductively connected to the electrical ground (4) of the motor (1).
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: April 22, 2003
    Assignee: Andreas Stilhl AG & Co.
    Inventor: Klaus Prach
  • Patent number: 6094822
    Abstract: A hedge clipper is provided that has an internal combustion engine that is to be started by hand. By means of a clutch and a gear mechanism, the engine drives cutting blades in a reciprocating manner; the cutting blades are guided and held in a cutter bar. Disposed on the output side of the clutch is a brake drum around which extends a brake band. The first end of the brake band is fixed to the housing, and the second end of the brake band is held on a pivotable brake lever that is acted upon by a brake spring that urges the brake band into engagement against the brake drum. The brake lever can be moved into an inoperative position of the band brake by a release lever against the force of the brake spring. The release lever cooperates with an adjusting cam that is disposed directly adjacent to the brake lever and in the inoperative position of the band brake forms a rest stop for the brake lever, receiving the force of the brake spring.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: August 1, 2000
    Assignee: Andreas Stihl AG & Co.
    Inventors: Karl-Heinz Lange, Klaus Prach, Christian Schwarz, Jochen Kramer