Screw Means Patents (Class 409/285)
  • Patent number: 8834081
    Abstract: A table top broach machine comprising a table top; at least one support member positioned below and mounted to the table top; a drive mechanism operatively connected to at least one sealed drive spindle. The drive mechanism is positioned below the table top and configured to attach to at least one of the table top and the support member; and a base is positioned below and connected to the support member. The base is in fluid communication with and positioned below the table top.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: September 16, 2014
    Assignee: American Broach & Machine, Co.
    Inventor: Kenneth B. Nemec
  • Patent number: 8112870
    Abstract: A faceted bone screw and a method for manufacturing the same includes a screw thread configuration having facets that are substantially transverse to the thread. The facets are generally made up of a plurality of transitioning peaks and valleys which vary the depth of the thread and are disposed in one or more locations throughout the threaded portion of the bone screw. The facets operate to reduce the torque required to drive the bone screw into bone, while at the same time operate to assist in anchoring the bone screw within the bone once inserted therein, and thereby reduce the possibility for the screw backing out after insertion.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: February 14, 2012
    Assignee: Medical Facets LLC
    Inventors: Wayne A. Willert, Glenn A. Rupp, Kevin J. Lovell
  • Publication number: 20090131989
    Abstract: A faceted bone screw and a method for manufacturing the same includes a screw thread configuration having facets that are substantially transverse to the thread. The facets are generally made up of a plurality of transitioning peaks and valleys which vary the depth of the thread and are disposed in one or more locations throughout the threaded portion of the bone screw. The facets operate to reduce the torque required to drive the bone screw into bone, while at the same time operate to assist in anchoring the bone screw within the bone once inserted therein, and thereby reduce the possibility for the screw backing out after insertion.
    Type: Application
    Filed: November 19, 2007
    Publication date: May 21, 2009
    Inventors: Wayne A. Willert, Glenn A. Rupp, Kevin J. Lovell
  • Patent number: 6648568
    Abstract: A linear blind broaching machine (10) includes a base (22), a broaching ram assembly (24), a linear tool slide (26) supported on the base by linear antifriction bearings (90) and a support block (92) mounted between the base and the linear tool slide below a broaching ram of the broaching ram assembly to provide support to the linear tool slide during blind broaching. The linear tool slide has an elongated construction including an elongated positioning block (114) against which blind broaches are laterally positioned, and an electric servomotor (108) drives the linear tool slide (26) to provide indexing thereof between broaching movements of the broaching ram. A roller screw drive (54) driven by an electric servomotor (56) drives a broaching ram (44) supported by linear antifriction bearings 46.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: November 18, 2003
    Assignee: Utica Enterprises, Inc.
    Inventor: Robert E. Roseliep
  • Publication number: 20020127074
    Abstract: An inside broaching machine having an upper pressure cylinder and a lower drawing cylinder that can be displaced in a machine rack. A machine table with receiving means, receives work pieces in parallel, and the broaching tools extending through the machine table each can be locked on the pressure carriage and the drawing carriage in tool holders. The machine exerts pressure and tensile force in the course of the broaching operation. The broaching tools are held clamped on the pressure carriage and the drawing carriage in radially clamping tool holders through the broaching operation. The two carriages are coupled in a force-locked manner.
    Type: Application
    Filed: March 8, 2002
    Publication date: September 12, 2002
    Inventor: Lothar Gierth
  • Patent number: 6409442
    Abstract: A vertical internal push broaching machine comprises a machine column and a workpiece lifting table which is guided for displacement on carriage guideways. Underneath the lifting table, a feeder carriage is disposed vertically displaceably on guideways. These guideways can be separate from the carriage guideways. The lifting table is actuated by means of a single elevating drive which is disposed behind the plane spanned by the carriage guideways.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: June 25, 2002
    Assignee: Oswald Forst Maschinenfabrik und Apparatebauanstalt GmbH & Co. KG
    Inventors: Andreas Berktold, Thomas Grigutsch
  • Patent number: 5984600
    Abstract: The invention relates to a broaching machine comprised of a machine table for receiving a workpiece and being mounted in a machine frame. There is a platform which is driven so as to be displaceable relative to the table, as well as of one or more of axially operating broaching tools, which can be coupled with the platform. The machine table and the platform are displaceable in oppositely oriented directions. The machine table and platform are preferably driven via a common spindle drive. The spindles have two oppositely oriented threaded sections and the machine table and platform each are mounted on one of the two oppositely oriented threaded sections for a driving connection.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: November 16, 1999
    Inventor: Christian Gierth
  • Patent number: 5919015
    Abstract: A mechanical drive linkage for a blind spline broaching machine wherein a rotary motion provided by a servo driven helical ball or roller screw is converted to a linear reciprocal motion of a ram through the use of a kite link and a pivot link that as a part of their motion communicate with guide tracks in order to prevent side loads from being applied to the ball screw, its carriage, or the ram of the blind spline broaching machine.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: July 6, 1999
    Assignee: Utica Enterprises, Inc.
    Inventors: Arthur C. Mason, Robert E. Roseliep
  • Patent number: 5833411
    Abstract: A vertical broaching machine comprises a machine stand having an upper rail and a lifting carriage displaceably guided on the stand and drivable by means of lifting spindles which are supported in spindle nuts lodged in the rail for rotational driving. An upper workpiece holder is mounted on the rail, holding a broach when a compressive broaching job is carried out.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: November 10, 1998
    Assignee: Oswald Forst Maschinenfabrik u. Apparatebauanstalt GmbH & Co. Kommanditgesellschaft
    Inventors: Herbert Holstein, Rudolf Dotsch, Andreas Berktold
  • Patent number: 5785470
    Abstract: The invention is basically a device that allows an individual to align the broaching tool more accurately. The invention begins with a base plate that is attached to the retriever base or puller head of the broach machine. Within the base plate is a large broach stick opening through which the retriever end or the puller end of the broach tool is placed. Attached to the base plates are four rails around the large openings. The adjustment plate is a plate that fits on top of the base plate and within the area created by the four rails. In the center of the adjustment plate is a large opening for the attachment of the retriever end or puller end of the broach tool. Also the adjustment plate has openings for attachment through bolts to the base plate. In the four rails there are also openings for set screws that pass through the rails and make contact with the adjustment plate fit within the area created by the rails.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: July 28, 1998
    Inventor: Richard Scheufler
  • Patent number: 5615467
    Abstract: A broaching device and method for enlarging an opening, hollow or cavity in a workpiece comprises a broaching tool which is mounted on, or formed on, either the shaft or the nut of a ballscrew drive unit which includes a ballscrew shaft and a ballscrew nut.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: April 1, 1997
    Assignee: Thomson Saginaw Ball Screw, Inc.
    Inventors: Mark J. Simmons, Steven G. Parsons