Patents by Inventor Helmut Hollenstein

Helmut Hollenstein 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: 4984929
    Abstract: A fitting to connect the front plate of a drawer with a rail member thereof includes a dowel casing which can be fitted into the front plate and a hook member connected to the front end of the rail member to be engaged in the dowel casing. A metallic disk provides rigidity for the dowel casing. The hook member has a flange which abuts flush with the front face of the dowel casing and which has a bevelled portion.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: January 15, 1991
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4911509
    Abstract: A drawer includes metal drawer side walls, with a rail member arranged above each drawer side wall. A lateral top member is clamped onto each rail member and abuts on the upper rim of the inner side of the drawer side wall.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: March 27, 1990
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4875747
    Abstract: A drawer has metal drawer side walls including vertical flanges which form the lateral limitations of the drawer. The drawer side walls have at their lower sides horizontal respective flanges on which a bottom plate, e.g. of chip board, abuts. Punched from the horizontal flanges of the drawer side walls are a number of flaps which project into continuous grooves of the bottom plate which extend parallel to the lateral edges thereof. In the longitudinal direction of the drawer side wall, the flaps at each side are aligned obliquely to the respective groove.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: October 24, 1989
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventor: Helmut Hollenstein
  • Patent number: 4842351
    Abstract: A drawer has metal side walls with vertical flanges thereof forming the lateral limits of the drawer. Each vertical flange has at a lower end thereof a horizontal flange on which a drawer bottom plate of wood or the like abuts. Hooks are punched from the horizontal flanges and project into recesses in the bottom plate. The hooks are bendable and have angular tips pierced into walls of the recesses.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: June 27, 1989
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4840512
    Abstract: A fitting for fastening a rail member of a drawer to a rear wall of the drawer includes a supporting member fastenable to the real wall. The rear end of the rail member is held in the support member by a fastening member which is engageable in the supporting member and is screwable into the rail member. The fastening member is clamped to the supporting member by a clamping screw.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: June 20, 1989
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4815796
    Abstract: A fitting fastens each side of a drawer front panel to metal drawer sides. In a vertical web adjacent the front panel of each drawer side is provided a recess open towards the front and having vertically projecting therein a nose to hang a holding member of the front panel. A slot, which is stamped out of the drawer side and into which projects a nose of a clamping plate, is disposed behind the recess. The clamping plate can be clamped to a holding plate which is perpendicular to the front panel and which is secured to the front panel. The holding plate and the clamping plate, which together form the holding member, receive therebetween the vertical web of the drawer side.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: March 28, 1989
    Assignee: Julius Blum Gesellschaft M.B.H.
    Inventors: Erich Rock, Helmut Hollenstein, Josef Brunner
  • Patent number: 4815798
    Abstract: A holding device for the front plate of a drawer with metal drawer frames includes holding members fastened to the front plate and supporting members fastened respective of the drawer frames. The holding members are engageable in the supporting members. The supporting members are adjustably fastened to the drawer frames by means of clamping screws.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: March 28, 1989
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein, Josef Brunner
  • Patent number: 4804239
    Abstract: A fitting for a drawer, which can be assembled from a plurality of components and has metal drawer side walls which at the same time form pull-out rails for extracting the drawer includes a fastener for connecting each rail to a front panel (3) and a rear wall (3) of the drawer. Each drawer side wall is provided with a fastening plate (3) for the rear wall (3) of the drawer. Attachments connect opposite ends of the rail to the front panel and the rear wall of the drawer. Rail has at one end thereof an adaptor and at the other end thereof an annular groove.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: February 14, 1989
    Assignee: Julius Blum Gesellschaft M.B.H.
    Inventors: Erich Rock, Josef Brunner, Helmut Hollenstein
  • Patent number: 4802716
    Abstract: A fitting for a drawer which can be assembled from a plurality of components and has metal drawer sides includes fasteners for connecting the drawer sides to a rear wall of the drawer. Each drawer side is provided with an angled fastening plate for connection to the rear wall of the drawer. The fastening plate has therein a keyhole and on the upper edge a slot which is open at the top and into which holding members of the rear wall of the drawer can be inserted. In addition, the fastening plate is provided with additional holes for fastening screws or tenons. The holding members of the rear wall of the drawer are plates each of which has a positioning web projecting into the open slot and a nose projecting into the keyhole.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: February 7, 1989
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein, Josef Brunner
  • Patent number: 4700994
    Abstract: A drawer is covered by a furniture door which is mounted on the side wall of a piece of furniture. The drawer has a front plate which is fastened to two drawer side walls. Caps which are pushed onto the front ends of the drawer side walls cover the side walls and parts of the front plate. The caps can have holding members for rail members.
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: October 20, 1987
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4697946
    Abstract: Furniture connectors are provided to connect the front plate of a drawer with the drawer side walls and rail members. A slide member which holds a holding bolt is provided in each furniture connector. A spring engages the slide member to pivot the slide member about an axle eccentrically arranged in a housing of the furniture connector and in a radial plane of the housing which is designed like a dowel casing.
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: October 6, 1987
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4579474
    Abstract: A device for joining furniture panels includes a dowel casing with a holding member for holding the head of a screw or the like when the latter is inserted into the dowel casing. The dowel casing is insertable into a hole in one panel and the screw is to be screwed into another panel. The dowel casing is a one-part casing open at the bottom or inserted end thereof.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: April 1, 1986
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4576506
    Abstract: A joining device for connecting two furniture parts includes a dowel casing which is insertable into a bore in the side face of one furniture part and a screw that is screwed into the front face of the other furniture part. The screw is held in the dowel casing by a holding member which is a clamping element. The dowel casing is made of one piece and is open at its bottom. The holding member has an annular rim by which it is held by lateral projections of the dowel casing.
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: March 18, 1986
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4564306
    Abstract: A fitting for furniture parts includes a dowel casing and a screw or the like. The screw has a head extending into the dowel casing where it is held tight by a locking member. To facilitate the insertion of the screw into the dowel casing conical guide surfaces are provided on the dowel casing.
    Type: Grant
    Filed: February 2, 1983
    Date of Patent: January 14, 1986
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4557531
    Abstract: A pull-out guide assembly includes, for each side of a drawer, a pull-out rail, a support rail and an intermediate roller carrier together forming an inseparable unit. A locking member is provided on each drawer side wall and has a catch which secures the pull-out rail on the drawer side wall. The locking member also keeps the closed drawer in the closed position by clamping the support rail.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: December 10, 1985
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: 4505610
    Abstract: A device for connecting two furniture parts includes a dowel casing which is insertable into a bore in the side face of one furniture part and a screw that is screwed into the front face of the other furniture part. The screw is held in the dowel casing by a holding member which is a clamping element. Opposite the holding member there are ribs on the inner wall of the dowel casing into which the head of the screw is pressed by the holding member.
    Type: Grant
    Filed: May 24, 1983
    Date of Patent: March 19, 1985
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein
  • Patent number: D319933
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: September 17, 1991
    Assignee: Julius Blum Gesellschaft m.b.H.
    Inventors: Erich Rock, Helmut Hollenstein, Josef Brunner