Patents Examined by Robert Louis Spruill
  • Patent number: 4276994
    Abstract: Strong, light weight master cylinders for hydraulic braking systems are produced by incasing a section of steel tubing within a diecasting of metal such as an alloy of magnesium or aluminum. Master cylinders can thus be produced by diecasting the metal in situ around a seamless tube having a smooth accurately oversized bore so that it incases the exterior surface and extends over one end thereof and through predetermined shrinkage produces a final uniform bore diameter and operating surface. Tooling requirements are minimal, with little if any machining being needed following the diecasting operation. Unit production cost is thus lower than that of castings made with permanent molds. Light weight diecastable metals can thus be used in combination with strong but relatively thin steel tubing to provide durable master cylinders that are lighter, simpler and less expensive to make than cast iron cylinders. This composite construction can be used in power cylinders for numerous light weight applications.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: July 7, 1981
    Assignee: Diemakers, Inc.
    Inventor: George Spalding
  • Patent number: 4260007
    Abstract: An improvement is provided in a method for the continuous casting of glassy metal alloy filaments wherein molten alloy is extruded from a pressurized crucible through an extrusion orifice onto a rotating quench surface. The invention provides a boric oxide seal for the extrusion orifice that prevents oxidation of the molten alloy prior to initiation of extrusion. At initiation of extrusion, the seal is conveniently expelled from the orifice with the leading surge of the extruded molten alloy.
    Type: Grant
    Filed: March 14, 1979
    Date of Patent: April 7, 1981
    Assignee: Allied Chemical Corporation
    Inventors: John A. Wellslager, Susan L. Rosenberg
  • Patent number: 4249591
    Abstract: The specification discloses a tooth-shaped member including a central insert which is removable from a facing in order to make the supporting framework for a dental bridge. An appropriate size and shape of a tooth-shaped member is selected and aligned in a gap between built up wax crowns of abutment teeth. The insert extends across the facing and is adhesively bonded at the ends thereof to the adjacent wax crowns. The facing is then removed from the insert. The wax crowns are cut down to the desired shape and the insert and crowns are removed as a single unit. The unit is then cast to form a bridge framework which is coated with porcelain to form artificial teeth.
    Type: Grant
    Filed: June 14, 1979
    Date of Patent: February 10, 1981
    Inventor: Larry C. Been
  • Patent number: 4243093
    Abstract: A composite article and method of forming the same wherein an inner casting is separated from an outer casting by an insulative portion defining the pattern for the outer surface of the inner casting and the pattern for the inner surface of the outer casting. The insulative portion is captured between the castings to define a thermal barrier therebetween. The castings are formed by gasifying an expendable gasifiable pattern corresponding to the inner and outer castings, respectively. The patterns are assembled with the insulative portion of the article disposed therebetween and a mold is formed about the assembled patterns and insulative portion. Upon pouring of molten casting metal into the mold, the expendable patterns are gasified into the mold, permitting the inner and outer portions of the article to be cast about the insulative portion to form the desired final composite article.
    Type: Grant
    Filed: November 17, 1977
    Date of Patent: January 6, 1981
    Assignee: Caterpillar Tractor Co.
    Inventor: John R. Nieman
  • Patent number: 4241780
    Abstract: Battery plates are assembled into stacks forming positive and negative rows of lugs and the stacks are placed within the cells in a battery case. Molding channels are automatically formed around the positive and negative rows of lugs and molten lead alloy is automatically introduced into the molding channels to cast the straps and intercell connections simultaneously within the battery case.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: December 30, 1980
    Assignee: General Battery Corporation
    Inventor: William J. Eberle
  • Patent number: 4239146
    Abstract: A collapsible box has foldable wall-and-bottom assemblies which are connected to opposite sides of a central partition wall. Each wall-and-bottom assembly includes a main wall, a bottom panel pivoted to the lower edge of the main wall, and foldable sidewalls having one edge pivoted to the side edges of the main wall. The opposite edges of the foldable sidewalls are pivotally but detachably connected to the central partition wall.
    Type: Grant
    Filed: June 21, 1978
    Date of Patent: December 16, 1980
    Inventor: Per S. Goranson
  • Patent number: 4232727
    Abstract: Disclosed is apparatus and method for integrated, continuous, high speed manufacture of metallic strip, especially brass, from a melt. The apparatus comprises a chilled casting mold in liquid communication with a melt and means for drawing a rod through the mold in a pattern of forward and reverse strokes. After emergence from the mold, the rod speed is regulated to a substantially constant value before conversion into strip. In this embodiment, the casting mold is stationary; the rod is drawn through the mold by driven rolls programmed to create the desired forward and reverse motion of the rod through the mold. Creating substantially constant speed is accomplished by allowing slack to develop through the lateral deflection of the rod. In another embodiment, the casting mold oscillates as the rod is withdrawn at a substantially constant speed so further rod motion regulation is unnecessary. Conversion of the rod to strip comprises flattening in a hot rolling mill, and quenching.
    Type: Grant
    Filed: November 1, 1978
    Date of Patent: November 11, 1980
    Assignee: Kennecott Copper Corporation
    Inventors: Terry F. Bower, M. Ronald Randlett, George Shinopulos
  • Patent number: 4230030
    Abstract: A method and apparatus for the rapid and continuous formation of reinforced flat bottom bags from a substantially endless roll of gussetted tubing.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: October 28, 1980
    Assignee: Violet M. Hanson
    Inventors: Violet M. Hanson, Edgar Strecker
  • Patent number: 4230028
    Abstract: A machine for installing disk-like inserts in container lids having axially directed flanges includes an indexing table on which several lid holders are mounted. The table moves the lid holders into and out of several stations. At the first station the lids are loaded into the holder which maintains them in an upright disposition with their flanges projected outwardly. At another station punches blank the inserts from sheet material, while plungers carry the blanked inserts forwardly beyond the punches and deposit them in the lids. The plungers have rigid forward faces provided with vacuum ports to that atmospheric air holds the blanked inserts against the plungers. As the plungers approach the lids at this station, they pass through apertures which are smaller than the inserts, and as a consequence the peripheral portions of the inserts are turned backwardly.
    Type: Grant
    Filed: November 22, 1978
    Date of Patent: October 28, 1980
    Inventor: David S. Knudsen
  • Patent number: 4223716
    Abstract: A method of making a shell mold (6) includes alternately applying a ceramic coating composition (8) and a stucco composition (10) to an expendable pattern, the presence of graphite being substantially avoided therein, and applying a barrier coating (16) thereto including a ceramic powder, a binder, and a preselected amount of graphite. A preferred range of graphite of about 13 to 17 Wt. % in the barrier coating (16) minimizes decarburization of a ferrous article formed in the cavity of the shell mold (6).
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: September 23, 1980
    Assignee: Caterpillar Tractor Co.
    Inventor: Richard C. Ostrowski
  • Patent number: 4222312
    Abstract: An apparatus for making a container having an inner bag and an outer stiff box of prismatic shape and rectangular cross section. The apparatus includes a rotatably supported mandrel wheel having a plurality of radially extending mandrels of rectangular cross section. The mandrel wheel is intermittently advanced to sequentially introduce the mandrels into a plurality of work stations positioned about the mandrel wheel for sequentially working on the containers carried by the mandrels. In one work station each mandrel is provided with a circumferentially closed inner bag; in a successive work station a rigid blank is folded on each mandrel about the inner bag for forming the outer box. Each blank has four lateral sides, a large closing flap extending from one end of each side in the same direction, and a small right-angled flap extending from an opposite end of each side in the same, opposite direction.
    Type: Grant
    Filed: November 29, 1978
    Date of Patent: September 16, 1980
    Assignee: SIG-Schweizerische Industrie-Gesellschaft
    Inventor: Helmut Wohlfarter
  • Patent number: 4217815
    Abstract: Method and apparatus for forming a tray are disclosed. The tray has at least one transverse hollow wall formed by a pair of substantially parallel, spaced flaps that are folded down from a transverse bridge. Each flap is secured to a tab folded upwards from the bottom of the tray. A pair of pivotally-mounted folding arms located above the tray rotate the two flaps downwardly while a mandrel located beneath the tray forces the two tabs upwardly into a substantially parallel, spaced relationship, whereby each tab contacts and becomes secured to its respective flap.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: August 19, 1980
    Assignee: International Paper Company
    Inventor: Ulrich G. Nowacki
  • Patent number: 4214616
    Abstract: A tree delimbing apparatus comprises a housing through which trees are conveyed and delimbed; the housing has an open bottom through which branches and leaves are discharged. A series of rollers are mounted inside the housing for conveying and delimbing the trees; the delimbing rollers are drums to which are attached a plurality of flexible flails extendible under centrifugal force, the flails detaching leaves and branches from the trees as they are conveyed through the housing. The particular construction of the housing enables the recuperation of all limb debris for other uses such as energy source, prevents pollution from spreading of such debris, and insures safety of all personnel in the vicinity of the machine.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: July 29, 1980
    Assignee: Forano Limitee
    Inventor: Maurice J. Brisson
  • Patent number: 4212231
    Abstract: A pop-up item for promotional purposes wherein a cover panel and a back panel, hinged to each other along a straight line, sandwich a die-cut panel in which are formed a plurality of interconnected coupons and at least two tabs. One tab is joined to the cover, and the other tab means is joined to the back. Opening of the cover causes the coupons to pop-up and attract the attention of the recipient. The items can be inexpensively mass-produced as a part of a web-press or sheet-press operation.
    Type: Grant
    Filed: August 16, 1978
    Date of Patent: July 15, 1980
    Assignee: Compak Systems Inc.
    Inventors: Ib Penick, John K. Volkert
  • Patent number: 4211265
    Abstract: A log splitting apparatus having a spiral-threaded, conical-surface splitter head is provided including a housing for supporting the splitter head in mechanically coupled, driving relationship to a power source. A log stop bar assembly is mounted on the support housing to extend in spaced parallel relationship to the conical surface of the splitter head forming a throat of constant width for passage of a log therebetween. Mounting of the stop bar is effected by a ring rotatable on the housing to selected angular positions and a telescopic structure providing selective adjustment of the width of the throat. The apparatus is adapted for mounting on a vehicle having an output power shaft to which the splitter is coupled. Bearing means are included in the housing with a splitter head supporting drive shaft journalled therein. In one embodiment, the housing is adapted for fixed mounting on the power source vehicle.
    Type: Grant
    Filed: February 2, 1978
    Date of Patent: July 8, 1980
    Inventor: Russell H. Thackery
  • Patent number: 4211264
    Abstract: A device for splitting logs, such as are for fireplace use, comprising a vertical post mounted on a plate, and a telescoping member slidably mounted on said post, having a wedge integral with said member, and a laterally extended plate on said member, opposite said wedge, for driving the wedge deeper into the log.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: July 8, 1980
    Inventor: Robert M. Cross
  • Patent number: 4210182
    Abstract: A stack of flat rectangular blanks are deformed in a single bending operation during which adhesive coatings between the blanks is activated to produce a laminated wood chair. Preceding the bending operation, the blanks are cut to remove a front end section and to form internal tongues struck out during the bending operation into rear leg elements. The removed front end section forms a rigid core for a seat cushion fitted onto the seat panel portion of the chair.
    Type: Grant
    Filed: June 8, 1976
    Date of Patent: July 1, 1980
    Inventor: Peter J. Danko
  • Patent number: 4209046
    Abstract: A log quartering wedge comprises a splitting wedge having a pair of opposed converging lateral surfaces meeting at a leading chisel edge and a pair of generally planar quartering blades disposed perpendicular to the leading edge of the wedge. The blades each include a generally straight leading edge defining an acute angle with the adjacent lateral surface of the wedge. The outer tips of the blades are set back longitudinally from the leading edge of the wedge.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: June 24, 1980
    Assignee: Lavigne & Gauthier, Inc.
    Inventor: Charles O. Lavigne
  • Patent number: 4209045
    Abstract: A combination tool including a table base, a carriage mounted on the base and having a screw jack for moving it forwardly and rearwardly relative to the base, a main table top carried by and movable with the carriage, and an auxiliary table unit having a planar surface through which the blade of a power saw projects. The auxiliary table may be mounted on the carriage in a first position, in which the auxiliary table surface forms an extension of the main table for conjointly supporting work pieces to be moved in cutting relation to the saw blade, with the screw jack functioning to adjust the spacing bewtween the saw blade and a fence carried fixedly by the base, and a second position in which the auxiliary table surface is disposed vertically at an edge of the main table top and the projecting saw blade overlies the main table surface for grooving, edging or shaping the edge of a work piece supported on the main table.
    Type: Grant
    Filed: June 7, 1978
    Date of Patent: June 24, 1980
    Inventor: Alvin L. Bassett
  • Patent number: 4206910
    Abstract: A longitudinally extending support is secured to the table of a table saw to which a guide rail is secured. A saw fence, having a shoe secured thereto, includes a clamping arm extending therefrom. The shoe slidably engages the guide rail and may be clamped together with the fence to the guide rail. A scale is formed on the guide rail and an index is attached to the shoe and positioned to register with the scale.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: June 10, 1980
    Inventor: William M. Biesemeyer