Patents Represented by Law Firm Burd, Braddock & Bartz
  • Patent number: 4188644
    Abstract: A control system for video tape equipment operable to present video tape audio and visual testimony. The control system has a court monitor and a jury monitor connected to a video tape recorder. A control unit interposed in the cables between the video tape recorder and the monitors is operable by a video tape recoder operator to withhold both the audio and visual signals from the monitors. The control unit has a two-position switch having a first position wherein the court monitor and jury monitor simultaneously present the video tape testimony to the court and jury. The switch has a second position wherein the video tape recorder remains activated and both the audio and visual signals are withheld from the court and jury.
    Type: Grant
    Filed: July 13, 1978
    Date of Patent: February 12, 1980
    Inventors: Richard B. Thiewes, Donald W. Nelson
  • Patent number: 4183604
    Abstract: An adapter for a conventional threaded electric light socket or the like having an external right hand threaded base for threading into a conventional socket. A locking tab on the base permits the adapter to be threaded into the socket and jams the threads of the socket to prevent its removal. The adapter has a cavity with an internal left hand thread for receiving an unconventional bulb or the like with a mating left hand threaded base. In one form, the adapter has a releasable lock structure for holding the adapter in the socket. A removal tool is used to release the lock structure to permit the adapter to be turned into and out of the socket.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: January 15, 1980
    Inventor: David A. Tjornhom, Sr.
  • Patent number: 4182396
    Abstract: A pattern plate adapted to support a pattern having a plate body with gage blocks to insure uniform body thickness and a plurality of lug and recess sets for forming a series of pockets and bosses in the cope and drag sections of a sand mold. The lug and recess sets are arranged in end-to-end or chain like arrangement adjacent the ends and sides of the body. Each lug and recess set has a pair of arcuate cavities open to opposite sides of the body and a pair of oppositely directed arcuate lugs. Each lug has an arcuate pad projected outwardly along its crown to form a well in the bottom or top of the pockets in the molds to accommodate loose foreign particles, as sand. In one form of the invention two pattern plates are secured together in a side by side relation to form a match plate pattern assembly. The pads on the lugs space the plate bodies from each other to provide a venting passage between the bodies.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: January 8, 1980
    Inventor: Bruce A. Clark
  • Patent number: 4182273
    Abstract: An apparatus for supplying feed material to animals and poultry. The apparatus has a trough located below a hopper used to store dry feed material. A plurality of legs support the hopper on the trough. A tubular member for carrying liquid, as water, extends through the hopper and is joined to an outwardly directed lateral tubular extension. The tubular member and extension is used to dispense the liquid into the trough. A drive motor rotates the tubular member to distribute the liquid around the trough and discharge the dry feed material into the trough. A control having a sensor located in the trough is operable in response to the amount of feed material in the trough to control the supply of water to the tubular member and the motor that rotates the tubular member.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: January 8, 1980
    Inventor: Maurice L. Peterson
  • Patent number: 4182097
    Abstract: A hay stacking machine having a platform for supporting a stack of hay. A radial trough extends from the center to the outer peripheral edge of the platform for accommodating hay being transported to it from a rake pickup. The trough includes a longitudinally extending side wall and a bottom wall which extends laterally to merge with the platform top surface. The bottom wall merges at its forward inner end with a portion of the bottom wall extending upwardly to merge with the platform surface. A portion of the platform surface extends over the vertical wall of the trough and over reciprocating out of phase feed teeth in the bottom wall and vertical wall of the trough. An annular frame extends around the platform and rotates relative thereto. A plurality of upright posts are attached to the annular frame. Compression arms extending to the center of the platform are pivoted on the posts and engage hay located on the platform.
    Type: Grant
    Filed: May 6, 1977
    Date of Patent: January 8, 1980
    Assignee: Veda, Inc.
    Inventor: Donald L. Henke
  • Patent number: 4181295
    Abstract: A box setting tool includes a flat, relatively thin box holding blade adapted to be positioned against a flat edge wall of an electrical junction box or switch box. Two box holding fingers are integral with the box holding blade and extend generally parallel to the box holding blade. They are curved so as to permit a flat edge wall of a junction box to be forced between them and the holding blade thus to holdingly position the junction box with respect to the tool. A transversely extending box positioning bar is fixedly positioned between the holding blade and the holding fingers and is provided with a box wall positioning edge situated to receive the forward flat face of the junction box edge wall. A stud contact blade is fixedly mounted with respect to the holding blade on a side thereof opposite the positioning bar and is provided with a stud contacting face extending outwardly from the holding blade at right angles to it.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: January 1, 1980
    Inventor: Eugene P. Duffy
  • Patent number: 4180413
    Abstract: An ice hockey stick having an elongated handle attached to a blade. The handle has a solid lightweight and flexible wood body reinforced with plastic sheet members provided with longitudinally oriented glass fibers. The blade has a rocker shaped bottom with a heel carrying an epoxy wear strip. The blade is reinforced with glass fiber fabric impregnated with a resin plastic.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: December 25, 1979
    Assignee: The Northland Group, Inc.
    Inventor: David A. Diederich
  • Patent number: 4178770
    Abstract: An apparatus to circulate and regulate the flow of cold air from the exterior of a building having a cold room to the cold room to supplement the refrigeration of the cold room provided by the usual refrigeration equipment. Duct work is provided to carry cool air from the exterior of the building to the cold room, and further duct work is provided to exhaust air from the cold room. One or more blowers operate in conjunction with the duct work to circulate the air through the duct work and through the cold room. The blowers are controlled by temperature controls such that the apparatus can operate only when the temperature outside is below a high temperature limit, and does operate when the temperature in the cold room approaches or exceeds an upper temperature boundary to introduce cold air into the room until a lower temperature boundary is reached.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: December 18, 1979
    Assignee: Econo-Cooler, Inc.
    Inventor: Lyle Fox
  • Patent number: 4177697
    Abstract: A portable apparatus useable with a rod file to sharpen the teeth of a chain saw. The apparatus has a base that clamps onto the blade of the saw. A chain holding finger mounted on a support carried by the base fixes the position of the tooth to be sharpened and aligns the rod file with the cutting edge of this tooth. An angled groove in the base serves as a guide and support for a slide attached to the file so that the file sharpens the tooth at a fixed angle and elevation.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: December 11, 1979
    Inventor: Edward C. McDunn
  • Patent number: 4178058
    Abstract: All of the pairs of insulated telephone lines in a long line cable are spliced at the same intervals and the splices are situated in junction boxes where linemen can have access to both junctions of each pair. Each line splice consists of a metallic splice bar forced into electrical contact with each of the parallel, spaced-apart ends of the line, the splice bar and both line ends being encased in a splice body of plastic, dielectric material which is provided with an access opening through to the splice bar between the spaced apart lines. A continuity check probe of the invention includes a metallic hook-shape rod having a short finger of shape and dimension to pass through the body access opening to contact the splice bar when a parallel, spaced-apart long finger of the rod lies in parallel, adjacent relation to the splice body.
    Type: Grant
    Filed: June 8, 1978
    Date of Patent: December 11, 1979
    Inventor: John H. Swenson
  • Patent number: 4175892
    Abstract: A particle monitoring device located in a line carrying a moving fluid, as air, containing particles. The device has a particle sensing member providing audio signals that are in proportion to the amount of particles moving with the fluid. The sensing member is a flexible sheet member closing an open end of a connector housing having a chamber. Particles that hit the active section of the sheet member produce an audio signal providing information feedback of the amount of particles moving with the fluid.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: November 27, 1979
    Inventor: Robert J. De brey
  • Patent number: 4174816
    Abstract: A sterile surgical cord and tube retractor for use by surgeons while operating to maintain accessories, such as suction tubes and cauterizing forceps, within easy reach of the surgeon without obstructing the surgical field with tubing and cord when not in use. The device comprises a housing adapted to be supported on the usual instrument table positioned adjacent the surgical field, and in turn supports the instrument tray. A plurality of spring tensioned retractors within the housing separately hold lengths of tubing and cord, permitting them to be withdrawn from the housing for use and then retracted back into the housing.
    Type: Grant
    Filed: June 6, 1973
    Date of Patent: November 20, 1979
    Assignee: The Regents of the University of Minnesota
    Inventor: Leslie C. Olson
  • Patent number: 4174815
    Abstract: A machine and method for winding coils of wire on a slotted core of an armature core assembly. The machine has a holder for releasably supporting the armature core assembly in an upright position. Rotatable annular members located adjacent opposite sides of the core have holes for accommodating wires that are wound on the core. Chucks mounted on the annular members guide the wires moving from the annular members into two pairs of slots in the core. A motor connected to the annular members with a common drive structure rotates the annular members in opposite directions to wind two coils of wire on the core. A core indexing motor drivably connected to the holder operates to sequentially index the core during the winding operation.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: November 20, 1979
    Assignee: Possis Corporation
    Inventor: Raymon H. Dammar
  • Patent number: 4174132
    Abstract: A hook assembly usable with conventional load lifting equipment has a frame and a generally arcuate hook member pivotally assembled to the frame. The hook member is rotatable relative to the frame between an open position for engagement of a load loop, such as a link or sling, a closed position to secure the load for handling, and a discharge position for dropping the load loop from the hook assembly. The frame has a contoured portion fashioned to cooperate with a hook member tip and body portion to define a closed, load retaining eye when the hook member is in the closed position, and an open, unobstructed throat when the hook member is in the open position. A releasable lock mechanism is assembled with respect to the frame and is operable to hold the hook member in an open position, to lock it in the closed position and to release to allow the hook member to move to the discharge position. The releasable lock mechanism includes a locking member fixed for guided movement relative to the frame.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: November 13, 1979
    Assignee: American Hoist & Derrick Company
    Inventor: Edward J. Crook, Jr.
  • Patent number: 4173234
    Abstract: A valve casing is provided with a part-spherical interior sealing surface and with three valve ports each open from the outside of the casing and through the part-spherical sealing surface thereof. A part-spherical valve body or ball is mounted in concentric very slightly spaced relation to this sealing surface of the valve casing. The valve body carries a valve seal structure and is provided with a valve body passage extending through the valve body. The valve body is rotatable within the valve casing between: (1) a first position wherein said valve body passage provides a passageway between a first and a second of the ports and said valve seal structure is in sealing relation to the valve casing sealing surface around a third of said ports; and (2) a second position wherein said valve seal structure is in sealing relation around said first port and said valve body passage provides a passageway between said second and third ports.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: November 6, 1979
    Assignee: Waterous Company
    Inventors: David F. Thomas, Earl A. Platt
  • Patent number: 4173428
    Abstract: A printer's paper pile inverter includes two parallel, spaced apart, C-frames held in spaced relationship to each other by a base frame including a plurality of C-frame connecting straps integral with, and extending between the base legs of each of the C-frames. First outwardly extending legs of the C-frames and a pallet lift fork mounted on the base frame are slid under a first pallet supporting a pile of papers to be inverted. A second pallet is inverted and placed on top of the paper pile. A jacking mechanism supported on the base frame of the inverter powers the lift fork to lift the first pallet until the second pallet comes into contact with the under surfaces of second outwardly extending legs of each C-frame.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: November 6, 1979
    Assignee: Bethany Fellowship, Inc.
    Inventor: John H. Thornberg
  • Patent number: 4172594
    Abstract: An ice hockey stick having an elongated handle attached to a blade. The handle has a solid lightweight and flexible wood body reinforced with plastic sheet members provided with longitudinally oriented glass fibers. The blade has a rocker shaped bottom with a heel carrying an epoxy wear strip. The blade is reinforced with glass fiber fabric impregnated with a resin plastic.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: October 30, 1979
    Assignee: The Northland Group, Inc.
    Inventor: David A. Diederich
  • Patent number: 4170385
    Abstract: A top unloading silo unloader pendantly supported in a tower silo. The unloader has a material collector moved around the silo with an automatic leveling and drive structure. An impeller receives material from the collector and throws the material into an out chute which directs the material to a doorway leading to an upright passageway. The leveling and drive structure mounted on the outer end of the collector has leading and trailing drive wheels connected with adjustable mounts to a leveling apparatus. Power is applied to both wheels by separate drive shafts connected to the power transmission for the augers of the collector. The leveling apparatus has a base secured to the collector. Supports pivotally mounted on opposite ends of the base are attached to the mounts for the wheels. A linear actuator connected to the supports operates to concurrently pivot the supports in opposite directions so that the outer end of the collector can be raised or lowered and held in a selected position.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: October 9, 1979
    Assignee: Veda, Inc.
    Inventors: Floyd E. Buschbom, Glen D. Hansen, Jerome T. Paulson
  • Patent number: 4167977
    Abstract: An earthworking unit having a toggle trip mechanism for holding an earthworking tool in an earthworking position and allowing the tool to move upwardly to a release position. The toggle trip mechanism has a pair of links pivotally connected with an eccentric pin. One link is connected to a pivoting mount held in a normal position with a flexure bar. The other link is connected to a standard carrying the earthworking tool. A control arm connected to the pin and a control rod is operable to rotate the eccentric pin 91 to adjust the overall length of the toggle links.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: September 18, 1979
    Assignee: Geurts Inc.
    Inventor: Cletus J. Geurts
  • Patent number: RE30200
    Abstract: A portable tiltable platform includes a trough extending to the peripheral edge for communication with hay being transported to it from a rake pickup which feeds it to an auger and in turn to a compressing roller and then into the inlet end of the trough at the peripheral edge of the platform when the platform is in the horizontal transport position. The trough includes a longitudinally extending side wall and a bottom wall which extends laterally to merge with the platform top surface. The bottom wall merges at its forward inner end with a portion extending upwardly to merge with the platform surface. A portion of the platform surface extends over the vertical wall of the trough and over reciprocating out of phase feed teeth in the bottom wall and vertical wall of the trough. An annular frame extends around the platform and rotates relative thereto. A plurality of posts are provided which have compression arms extending to the center of the platform which receives hay from the outlet end of the trough.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: February 5, 1980
    Assignee: Veda, Inc.
    Inventor: Donald L. Henke