Patents Represented by Law Firm Burmeister, York, Palmatier, Hamby & Jones
  • Patent number: 4745020
    Abstract: An engraved plastic article is prepared by applying a coat of epoxy resin paint to a polyether sulfone resin article, curing the coated article at an elevated temperature, and engraving indicia on a surface of the article. During engraving the paint coating does not loosen, chip or otherwise dislodge.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: May 17, 1988
    Assignee: Electro-Voice, Incorporated
    Inventor: Gregory D. Jackson
  • Patent number: 4733749
    Abstract: A loudspeaker system for low frequencies has a manifold chamber into which oppositely mounted and aligned woofer units radiate sound. The chamber radiates the sound perpendicularly to the woofer axes, either directly into space or into a horn. An additional back woofer may radiate directly in the perpendicular direction.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: March 29, 1988
    Assignee: Electro-Voice, Inc.
    Inventors: Raymond J. Newman, David E. Carlson
  • Patent number: 4730090
    Abstract: The switch includes a rotatable electrically insulating carriage having first and second contactors mounted thereon and facing in opposite directions from the path of the carriage, for a sliding engagement with first and second sets of fixed contacts. The contactors are biased in opposite directions, toward the contacts, by an electrically insulating switch assembly, mounted in a cylindrical opening in the carriage, and comprising a cup-shaped insulator having a cylindrical portion slidably mounted in the cylindrical opening. The insulator having a cup-shaped spring nest therein, for receiving one end of a coil spring. Biasing forces are exerted against the contactors by an end portion of the insulator and the opposite end of the coil spring. The cup-shaped insulator guides and locates the coil spring while obviating any electrical connection between the first and second contactors.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: March 8, 1988
    Assignee: Indak Manufacturing Corp.
    Inventors: Andrew F. Raab, Albert R. Cobb, III
  • Patent number: 4727766
    Abstract: The mechanism comprises a heat control knob, pivotally mounted on the front end of an operating lever which is pivotally and slidably supported by second pivot means, having its pivot axis parallel with but spaced from the axis of the first pivot means. The front portion of the operating lever has a follower which is guided by a guide track, so that the heat control knob is movable along a straight path. The operating lever has a pivot slot which is pivotally and slidably guided by the second pivot means. The operating lever also has a generally longitudinal coupling slot which receives a coupling pin projecting from a control lever, pivotally supported for swinging movement about the axis of the first pivot means.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: March 1, 1988
    Assignee: Indak Manufacturing Corp.
    Inventor: John G. Cummings
  • Patent number: 4720612
    Abstract: A series of manually depressible pushbuttons establish all of the operating functions for an automotive air control system. Latching and block-out mechanisms are provided to latch only one pushbutton at a time in the depressed position. The pushbuttons operate the first arms of spring-biased levers having second arms for selectively moving particular selector plates of a stacked set. The selector plates are adapted to operate single function control devices, including both vacuum valves and electrical switches having movable control members with knobs thereon projecting through large size and small size openings in the selector plates. The second arms of the levers extend through large size and small size slots in the selector plates. The small size slots and openings afford operating connections, while the large size slots and openings merely provide for idling movement.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: January 19, 1988
    Assignee: Indak Manufacturing Corp.
    Inventor: John G. Cummings
  • Patent number: 4719336
    Abstract: The process of molding thermal insulating blocks and electrical heating units with a mold having a horizontal filter screen in which a slurry containing a mass of inorganic fibers, water, and a binder is mixed to randomly orient the fibers and thereafter poured into the mold and a first portion of the liquid component of the slurry drained through the screen, thereafter vibrating the screen and mold to drain a second portion of the liquid component of the slurry through the screen to produce a filter mat, thereafter drying the filter mat to remove the remaining liquid component of the slurry from the mat, and thereafter heating the filter mat to bond the fibers to each other. An electrical heating element may be mounted on the mold before the slurry is introduced into the mold. The products produced by the process have densities in excess of 30 pounds per cubic foot.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: January 12, 1988
    Assignee: General Signal Corporation
    Inventor: Duane L. Sterwald
  • Patent number: 4717889
    Abstract: A power supply includes a plurality of transformers with individual primary windings, having one end connected in common, respectively, the transformers sharing a secondary winding; a switching network for (1) applying alternate polarity DC voltages to the commonly connected ends of the primary windings over each half-cycle of a clock signal, and relative to these commonly connected ends of the primary windings, (2) applying the same or opposite polarity DC voltages individually to the other ends of the primary windings, over each half-cycle of the clock signal, and in different combinations dependent upon the amplitude or level of a command signal at any given switching time, for producing a pulsed AC waveform in the secondary winding that is amplitude modulated by the command signal.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: January 5, 1988
    Assignee: Electro-Voice, Incorporated
    Inventor: Rudolph H. Engelmann
  • Patent number: 4710601
    Abstract: The sealed toggle action switch comprises an operating lever having a front operating arm projecting out of the front component of the casing. The lever has a rear arm, projecting into the casing and carrying a contactor plate for relative sliding and swinging movement. A coil spring is received around the rear arm and is compressed between the contactor plate and the front sealing flange of a soft resilient sealing boot, such sealing flange being compressed against the operating lever. The boot has a rear, outwardly projecting sealing flange which is retained between the front and rear casing components. The contactor plate has a pair of J-shaped flanges which are slidably engageable with first and second fixed contacts having forwardly projecting protuberances, affording a detent action with the J-shaped flanges. In one position of the operating lever, the J-shaped flanges of the contactor plate engage both of the first and second contacts.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: December 1, 1987
    Assignee: Indak Manufacturing Corp.
    Inventors: Andrew F. Raab, John W. Habecker
  • Patent number: 4707369
    Abstract: The process of simultaneously defatting and dehydrating raw fat animal tissue and other tissues in comminuted form by introducing the tissue particles into a boiling alcohol solvent, the fat of the tissue and water of the tissue being extracted into the body of boiling alcohol to form a slurry of alcohol, particles, fat and water. The water of the tissue and alcohol in an azeotropic vapor form are distilled off from the body of slurry and separated in a subsequent distillation to recover the alcohol for recycling. When sufficient water is removed from the slurry, the solids are separated from the liquids of the slurry, and the alcohol is evaporated from the fat. The recovered alcohol is dehydrated to less than 5% water by volume, and returned to the mass of alcohol.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: November 17, 1987
    Assignee: Faraday Laboratories, Inc.
    Inventor: Arnold Suresky
  • Patent number: 4696230
    Abstract: One or more wheel-air bustling devices are adjustably mounted between successive printing units of a multicolor printing press, to form adjustable bustles or ridges in the printed paper web. The bustles effectively shrink the width of the web, back to its original width, so that the previously printed color image is brought into precise registration with the next printed color image. Each bustling device comprises a body adjustably clamped to a supporting rod, a hollow tubular externally threaded stem movable through a guide opening in the body, an internally threaded adjusting knob received around the stem and rotatably retained on the body for longitudinally adjusting the stem, an air nozzle mounted on the upper end of the stem for directing an air jet against the web to form a longitudinal bustle or ridge therein, and a bustle wheel mounted on a bustle frame which is adjustable along the stem to raise and lower the wheel between operative and inoperative positions.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: September 29, 1987
    Assignee: Barkley Corporation
    Inventor: George J. Barkley
  • Patent number: 4691086
    Abstract: The switch comprises a hollow, generally rectangular casing, a generally rectangular pushbutton slidable rearwardly in such casing, and a terminal supporting block closing the rear end of such casing. All of such components are made of moldable resinous plastic materials. The block carries forwardly projecting contact points which connect with external electrical terminals. The pushbutton carries a cup-shaped contactor, slidably and rotatably mounted on a retaining pin which is pressed into a hollow post projecting rearwardly from the pushbutton. A compression coil spring is mounted around the pin and the post, between the contactor and the pushbutton. The contactor is fitted with an axial eyelet on which the contactor is freely rotatable. The contactor is movable into wiping engagement with the contact points, when the pushbutton is pushed rearwardly against the biasing force of a coil spring, compressed between the pushbutton and the terminal supporting block.
    Type: Grant
    Filed: April 3, 1986
    Date of Patent: September 1, 1987
    Assignee: Indak Manufacturing Corp.
    Inventors: John W. Habecker, Charles E. Black, III
  • Patent number: 4685628
    Abstract: Pieces of bony meat, fowl, fish or the like descend through a receiving hopper or duct and are transported by a pair of feed screws, out of the hopper through an exit opening in one end thereof. The hopper has side walls which may converge downwardly, in a known manner, but also have novel longitudinally converging side wall portions, opposite the feed screws, which converge toward each other and toward the feed screws in the exit direction, to afford tapered spaces between the longitudinally converging side wall portions and the feed screws, for enabling pieces to enter such tapered spaces and to become engaged with the feed screws for transportation in the exit direction. The feed screws preferably have overlapping screw flights of opposite hand, and rotate in opposite directions such that the flights propel the pieces into the tapered spaces.
    Type: Grant
    Filed: September 6, 1985
    Date of Patent: August 11, 1987
    Assignee: Beehive Machinery, Inc.
    Inventor: Douglas R. Berrett
  • Patent number: 4680896
    Abstract: Successively finished drills or other tools are ejected from a chuck into successive angularly spaced openings in a rotary turret, mounted on a carriage with a power device for reciprocating the turret into and out of an unloading position. A ratchet wheel on the turret is indexed through successive detented positions by engagement of the ratchet wheel with a pawl, as an incident to the reciprocating movement. The pawl is mounted on a stationary pivot and is biased into the path of the reciprocating ratchet wheel.
    Type: Grant
    Filed: October 3, 1985
    Date of Patent: July 21, 1987
    Assignee: Carbide International Inc.
    Inventors: Charles T. Breitenstein, Allen R. Holecek
  • Patent number: 4679588
    Abstract: A single rotary shaft connected to a single rotary carriage operates a vacuum selector valve and two rotary electrical switches, in a casing having rear and front components. The valve comprises a valve carriage, slidable along a linear channel in the rear component. A gear rack on the valve carriage meshes with a pinion gear on the rotary carriage. The valve carriage is slidably retained in the valve channel by the switch contact plates of the first rotary switch. Such contact plates have terminal portions retained between the front and rear casing components. The contactors of the two switches face in opposite directions on the rotary carriage and are biased by a single coil spring, insulated from one of the contactors by a cup-shaped insulating member. The contact plates of the second switch are mounted on the front casing component and have terminals extending outside of the rear casing component through slots therein.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: July 14, 1987
    Assignee: Indak Manufacturing Corp.
    Inventors: Andrew F. Raab, Albert R. Cobb, III
  • Patent number: 4678249
    Abstract: Compressible metal spring washers are mounted around the shank portions of terminal rivets and are clamped against thin conductor laminae of a flexible printed circuit having a resilient resinous plastic base lamina, clamped by the rivets against a relatively rigid plastic terminal supporting member. Each washer has a central dished portion, a reversely dished peripheral portion, and a smoothly rounded annular bulging portion therebetween for engaging one of the thin conductor laminae, without cutting into the laminae. The spring washers obviate any looseness of the terminal rivets due to dimensional variations, shrinkage with age, and temperature variations.
    Type: Grant
    Filed: December 27, 1985
    Date of Patent: July 7, 1987
    Assignee: Indak Manufacturing Corp.
    Inventors: Charles E. Black, III, Raymond T. Halstead
  • Patent number: 4669181
    Abstract: A thermal heating and insulating unit is manufactured by molding in situ a block of thermal insulating material about an electrical resistance element. The resistance element is first made from a continuous wire of electrical resistance material and formed into a serpentine configuration with a plurality of segments interconnected by bends at the ends of the segments. In a preferred construction, the segments are straight and the bends at the ends of the segments are in opposite directions. The resistance element is positioned in a mold on a plateau above a porous bottom, the bends overlapping the plateau, and a slurry of inorganic fibers, water and a binder is introduced into the mold to a lever above the plateau, the liquid component of the slurry passing through the porous bottom, and the fibers and a portion of the binder collecting on the porous bottom to form a block with a slot confronting the resistance element, the bends of the resistance element being embedded in the block.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: June 2, 1987
    Assignee: General Signal Corporation
    Inventor: Ludwig Porzky
  • Patent number: 4667068
    Abstract: A function selector knob is pivotally mounted on a function control lever which is pivotally and slidably supported by first pivot means. A pin and slot connection is provided between the lever and a vacuum electric selector switch. A convertible detent mechanism is provided for detaining the lever in either of two sets of detent positions, such sets having different numbers of positions, such as seven and five positions. Such convertible detent mechanism comprises a reversible detent carriage which is pivotally connected to the lever and is slidable along a guide channel having first and second sets of detent recesses on opposite sides thereof. The detent carriage has a detent ball or other member which is offset toward one side of the carriage, whereby the detent carriage is reversible between a first position, in which the detent member encounters the first set of detent recesses, and a second position, in which the detent carriage encounters the second set of detent recesses.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: May 19, 1987
    Assignee: Indak Manufacturing Corp.
    Inventor: John G. Cummings
  • Patent number: 4641734
    Abstract: In a synchronizing mechanism for clutches, there are provided between the gear shift sleeve and the synchronizing ring (14,15) stop bodies in the form of dogs (25, 26) which are in contact with the gear shift sleeve (between the teeth 34) in the circumferential direction by form-locking engagement and in the axial direction through spring-loaded stop balls (21) and in the neutral position are spaced from the synchronizing ring by a distance substantially equal to the axial extension of the check faces (32, 33) between the gear shift sleeve and the synchronizing ring. In this manner it is ensured that during shifting the axial force previously exerted through the check faces (32, 33) on the synchronizing ring (for instance 15) is replaced by an axial force which is transmitted by the dog and which prevents the synchronizing ring from coming off the countercone before the form-locking connection between the gear shift sleeve and the clutch body is established.
    Type: Grant
    Filed: May 15, 1984
    Date of Patent: February 10, 1987
    Assignee: Getrag Getriebe-und Zahnradfabrik GmbH
    Inventors: Erich Muller, Ruhle Gunter, Wilhelm Stocker
  • Patent number: 4633747
    Abstract: An elongated strip of sheet material is transported over a frame and along a transversely movable carriage on which upper and lower circular rotary cutting knives are mounted to slit the strip longitudinally into a desired portion to be processed immediately and a remnant portion for later use. The free edge of the desired portion is urged against a longitudinal guide, adjustably secured to the carriage, for adjusting the width of the desired portion. The strip is urged against the guide by a vertical crab wheel, locatable against the strip, and disposed at a slight acute angle to the longitudinal direction of the strip. The carriage and the guide are freely movable in a transverse direction to accommodate non-linearities in the strip.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: January 6, 1987
    Assignee: Gary Steel Products Corp.
    Inventor: Theodore Primich
  • Patent number: 4624338
    Abstract: A loudspeaker system employing a diaphragm type loudspeaker mounted in an opening in one of a plurality of walls of a hollow enclosure, the walls of the enclosure consisting of a plurality of layers disposed between surfaces thereof, the layers comprising a plurality of elongated strands of wood in a mass of solid resin, the axes of elongation of the strands in layers adjacent to the surfaces being generally parallel to a common plane and generally parallel to each other, the strands in adjacent layers being oriented with the axes of elongation of the strands in one layer normal to the axes of elongation of the strands in the adjacent layer. The enclosure has an axis of elongation and a transverse axis, and the strands in layers adjacent to the surfaces of the walls are generally parallel to the axis of elongation.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: November 25, 1986
    Assignee: Electro-Voice, Incorporated
    Inventor: Gary T. Ewald