Patents by Inventor Rolf Johnen

Rolf Johnen 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).

  • Publication number: 20080007007
    Abstract: The application relates to a sealing flange for sealing a shaft, in particular the crankshaft in a motor vehicle engine, with a substantially metallic flange body (11) which has a shaft opening (12) for passage of the shaft, the sealing flange including a sealing element (15) surrounding the shaft, fastening devices (13) for fastening the sealing flange (10) to the engine to be sealed, and a plastic sensor holder (20) mounted on the flange body (11) for holding a sensor element (16), wherein the flange body (11) is weakened in the region of the sensor holder (20).
    Type: Application
    Filed: February 23, 2006
    Publication date: January 10, 2008
    Applicant: Dichtungstechnik G. BRUSS GmbH & Co. KG
    Inventor: Rolf Johnen
  • Patent number: 6921080
    Abstract: A sealing ring for a shaft (3), characterized by a sealing lip (1) made of an elastomer material is flexionally dimensioned with a flexional elasticity which is sufficient for pressing a sealing section (10) of the sealing lip (1) against the surface of the shaft (3). The sealing section (11) of the sealing lip (1) is disposed with a cylindrical part of a given length (L) on the periphery of the shaft (3). The sealing lip (1) is provided with a thread (5) at least along the above-mentioned length on the shaft side, whereby a discharged medium is transported back to the sealing area (M) when the shaft (3) is rotated. By dimensioning accordingly, it is possible to dispense with an additional spring for pressing a sealing lip (1) against the shaft (3). The thread (5) is also sealed off from the surrounding area (U) in order to prevent the medium to be sealed from flowing out when the shaft (3) is not in operation.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: July 26, 2005
    Assignee: Dichtungstechnik G. Bruss GmbH & Co.
    Inventor: Rolf Johnen
  • Patent number: 6860486
    Abstract: A shaft sealing ring for a shaft comprises a sealing lip made of an elastomeric material or a PTFE compound and dimensioned as to be flaccidly bendable. The flexural elasticity is selected such that it will just be sufficient to press a sealing portion of the sealing lip into sealing engagement with the periphery of the shaft. The sealing portion of the sealing lip engages the periphery for a predetermined length. In the sealing portion, the sealing lip is provided along its circumference, at the side of the shaft, with endless, undulating return channels at least throughout this length. These channels return any medium escaping during rotation of the shaft to the space to be sealed. The return channels do not communicate with the surroundings of the shaft sealing ring. No seperate contact pressure means, such as a helical ring coil spring is required to press the sealing lip into engagement with the shaft.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: March 1, 2005
    Assignee: Dichtungstechnik G. Bruss GmbH & Co. KG
    Inventors: Gunther Hacker, Rolf Johnen, Wolfgang Schmitt
  • Publication number: 20030189293
    Abstract: A sealing ring for a shaft (3), characterised by a sealing lip (1) made of an elastomer material is flexionally dimensioned with a flexional elasticity which is sufficient for pressing a sealing section (10) of the sealing lip (1) against the surface of the shaft (3). The sealing section (11) of the scaling lip (1) is disposed with a cylindrical part of a given length (L) on the periphery of the shaft (3). The sealing lip (1) is provided with a thread (5) at least along the above-mentioned length on the shaft side, whereby a discharged medium is transported back to the sealing area (M) when the shaft (3) is rotated. By dimensioning accordingly, it is possible to dispense with an additional spring for pressing a sealing lip (1) against the shaft (3). The thread (5) is also sealed off from the surrounding area (U) in order to prevent the medium to be sealed from flowing out when the shaft (3) is not in operation.
    Type: Application
    Filed: March 14, 2003
    Publication date: October 9, 2003
    Inventor: Rolf Johnen
  • Publication number: 20030085527
    Abstract: A shaft sealing ring for a shaft comprises a sealing lip made of an elastomeric material or a PTFE compound and dimensioned so as to be flaccidly bendable. The flexural elasticity is selected such that it will just be sufficient to press a sealing portion of the sealing lip into sealing engagement with the periphery of the shaft. The sealing portion of the sealing lip engages the periphery for a predetermined length. In the sealing portion, the sealing lip is provided along its circumference, at the side of the shaft, with endless, undulating return channels at least throughout this length. These channels return any medium escaping during rotation of the shaft to the space to be sealed. The return channels do not communicate with the surroundings of the shaft sealing ring. No separate contact pressure means, such as a helical ring coil spring is required to press the sealing lip into engagement with the shaft.
    Type: Application
    Filed: November 5, 2002
    Publication date: May 8, 2003
    Inventors: Gunther Hacker, Rolf Johnen, Wolfgang Schmitt
  • Patent number: 6079715
    Abstract: A rotary shaft seal having an elastomer seat for fitting into the bore of a hub or for the attachment onto a shaft comprises a seal washer, connected to a metal enforcement ring through a elastomer intermediate layer. The elastomer intermediate layer consists of a material having a chemical endurance comparable to that of PTFE, in particular of fluorocaoutchouc, and has a thickness of less than 0.5 mm, preferably in the range of 0.05 mm to 0.5 mm. This intermediate layer connects the seal washer with the enforcement ring according to a method according to the invention by simultaneously vulcanization with the elastomer seat on the outer side of the enforcement ring, wherein the injection pressure acting during injection and vulcanization is kept away from the intermediate layer.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: June 27, 2000
    Assignee: Dichtungstechnik G. Bruss GmbH & Co. KG
    Inventors: Rolf Johnen, Siegfried Dunse
  • Patent number: 5957100
    Abstract: A cylinder head cover for a combustion engine having a cover member (2) and a seal (4) made of an elastomer, which includes a metallic stiffener (8) and which serves for sealing with respect to the cover member (2) and a cylinder head surface (12) is characterized in that the cover member (2) is made of plastics and that the cover member (2) and the seal (4) are joined to a prefabricated unit after a corona treatment of the surface (5) of the seal (4) opposite the cover member (2) and adhesion by means of an adhesive.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: September 28, 1999
    Assignee: Dichtungstechnik G. Bruss GmbH & Co. KG
    Inventors: Ralf Frohwerk, Heike Hohn, Rolf Johnen, Klaus Seifert
  • Patent number: 5544895
    Abstract: A shaft packing includes a casing and at least two polymeric disks. One disk forms a protective lip and the other disk forms a packing lip. The internal diameters of the disks are smaller than the external diameter of the shaft to be packed. Between the two disks is positioned an expanding ring which ensures an inversion and expanding of the packing lip in the opposite direction to the protective lip.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: August 13, 1996
    Assignee: Dichtungstechnik G. Bruss GmbH & Co. KG
    Inventors: Steffen Heine, Heiko Schumacher, Rolf Johnen
  • Patent number: 5462288
    Abstract: A seal for sealing the end of a shaft passing out of the end wall of a casing and for sealing the end wall includes a gasket receptacle produced as a light metal pressure die casting. A sheet metal ring with a shaft seal ring molded onto it is pressed radially and axially into a recess in the die casting. The gasket receptacle is plastically deformed and the radial internal dimension of the sealing edge of the seal ring is set within the requisite narrow tolerance limits. A radially directed outer portion of the sheet metal ring is covered on both sides with elastomer.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: October 31, 1995
    Assignee: Dichtungstechnik G. Bruss GmbH & Co. KG
    Inventors: Jurgen Hering, Rolf Johnen, Gerd Upper
  • Patent number: 5462287
    Abstract: A seal for sealing the end of a shaft passing out of the end wall of a casing, as well as for sealing the end wall, is characterized in that a gasket receptacle is manufactured as a light metal pressure die casting, that a polytetrafluoroethylene sealing member is pressed from one side of the gasket receptacle towards which a recess is open and the radially outer portion of the shaft seal ring is injected round on either side with an elastomer material via a connecting channel of the die casting towards an end wall-side groove for receiving a static gasket during its moulding to the gasket receptacle. In the final operating stage, the sealing lip of the sealing member penetrated by a tube is bent axially by drawing onto a sleeve.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: October 31, 1995
    Assignee: Dichtungstechnik G. Bruss GmbH & Co. KG
    Inventors: Jurgen Hering, Rolf Johnen, Gerd Upper
  • Patent number: 4696657
    Abstract: An elastic shaft coupling for transmission of torque between two shafts. The coupling includes a polygonal rubber ring and a hub spider having a plurality of radially extending arms vulcanized in the rubber ring and being adapted for connection to the end of one shaft. Fastening elements are disposed between the arms of the hub spider and are vulcanized into the rubber ring. Each fastening element is also adapted for connection to the end of the other shaft. A centering device is provided in the region of the inner circumference of the hub spider for centering the shaft coupling relative to the one shaft.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: September 29, 1987
    Assignee: Goetze AG
    Inventors: Rolf Johnen, Hans Kirch, Volkmar Otto