Patents Represented by Attorney Robert E. Mitchell
  • Patent number: 4273059
    Abstract: A profiling system comprising a profile member having a profile guide element. The profile member is displaceable along a first straight axis. A working head is fixedly secured relative to a work support surface and spaced relative to the profile member. The working head and the support surface are mounted on a head support frame displaceable along a second straight axis extending transversely to the first axis. Support members are secured relative to the profile member and displaceable therewith to retain and displace a material to be worked on by the head. A follower element is fixedly secured to the head support frame and displaceably engaged with the profile guide element. The head support frame is displaced along the second axis in response to angular deviations from the first straight axis as defined by a path delineated by the profile guide element as the guide element is drivingly displaced along the first axis.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: June 16, 1981
    Inventor: Nabil Kamal
  • Patent number: 4253292
    Abstract: An automatic weighing and bagging machine and method for holding and opening a first bag of a plurality of juxtaposed bags held in the machine in a manner whereby the first bag may be filled with a weighed product and released from the plurality of bags. The bags are of the type having an extended tab secured to a portion thereof and extending above a mouth opening of the bag. The machine comprises a holding device for engaging at least a portion of the extended tab of the first bag. A retractor member is also provided for opening the mouth opening of the first bag by pulling a side wall portion of the first bag opposite to the engaged portion of the tab and away from the engaged tab. The retractor member also clamps the side wall portion to hold the bag in an open position whereby the bag is held from opposed sides for filling the bag with the weighed product. A container is provided to hold and weigh the product to be bagged.
    Type: Grant
    Filed: June 12, 1979
    Date of Patent: March 3, 1981
    Inventor: Arnold Lipes
  • Patent number: 4250132
    Abstract: A method and apparatus are provided for the extrusion of a thermoplastic material in modified form in which the thermoplastic material is introduced into the barrel of a screw extruder, and is heated and forced through the barrel: the material is passed through valve means which together with the temperature of the material is effective to produce a melt transition in the material at a predetermined point and to thoroughly mix the material; subsequently, the material is forced into a low pressure zone in the barrel where a modifying agent is introduced into the material; the resultant mass is forced out of the low pressure zone, and is passed through a mixing means effective to intensify the dispersion of the modifying agent in the mass, the mass is extruded and the extruded material collected.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: February 10, 1981
    Assignee: Phillips Cables Limited
    Inventor: Shirley Beach
  • Patent number: 4244317
    Abstract: Present parameter value indicators are wasteful of space and expense and have parallax error if viewed at an angle. This invention is a vertical strip bargraph comprising separately illuminated squares of different colors to indicate values of the parameter without parallax error and economical of space and expense.
    Type: Grant
    Filed: March 15, 1979
    Date of Patent: January 13, 1981
    Assignee: Canadian Marconi Company
    Inventor: Sol Rauch
  • Patent number: 4245149
    Abstract: The invention relates to a heating element for a heated chair which can be used as a covering material for the heated chair or which can be laid under the covering material or which can be draped over an ordinary chair to convert it to a heated chair. In accordance with the invention, the heating element has a glass fibre fabric layer made of intermixed glass fibre strands. An electrical resistance wire which consists of a core of glass fibre strands with a resistive wire wound around it, forms an undulating pattern in the glass fibre fabric layer, and top and bottom layers of thermoplastic material are heat fused or adhesively laminated to the glass fibre fabric layer. A metallic foil layer is applied to the side of the bottom layer which is remote from the glass fibre fabric layer. The heating element also includes a control for controlling the power delivered to the resistance wire. The said control is a simple dual proportional control which regulates the energy usage of the heating element.
    Type: Grant
    Filed: April 10, 1979
    Date of Patent: January 13, 1981
    Inventor: Ian F. Fairlie
  • Patent number: 4243200
    Abstract: A form pan section comprising a top wall and opposed side walls depending from a respective opposed side of the top wall. A support flange is provided along a free edge of each of the side walls. The support flange has a load supporting bearing section. Means is provided in each of the support flanges to secure the flange to supporting framework. Connection means is provided inwardly of the top wall and side walls to interconnect the pan section to another pan section. A form pan is constructed of at least two end pan sections having the above-described characteristics.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: January 6, 1981
    Assignee: Beer-Zaz Building Systems, Inc.
    Inventors: Issie M. Beer, Zenon A. Zielinski, Henry Finkel
  • Patent number: 4241668
    Abstract: A readily dismountable frame for mounting a container and cover under a supply shelf. The frame is suspended between spaced-apart rails depending from the shelf. One end of the frame is provided with fixed hooks to engage a first rail and the other with retractable spring-loaded catches which engage a second rail spaced from the first. Side beams on the frame have inwardly extending flanges for engaging under the flange of the tote box and cover permitting them to be slid into place separately or to be removed for filling or cleaning. Adjustable connectors between the beams permit width-wise adjustment for different sized containers. The device is specially applicable to suspending tote boxes and covers from wire supply carts.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: December 30, 1980
    Inventor: Wilfred J. Carroll
  • Patent number: 4241638
    Abstract: A self-extruding fastener having a head provided with a cross groove, a stem having two screw threads and a tapering portion terminating at a sharp pointed forward end adapted to form a guide opening in a thin sheet of metal. A third screw thread generates in a position midway between said two screw threads and in a portion where the stem ends and the tapering portion begins, and extends to the pointed forward end, while the two screw threads disappear in the tapering portion. Therefore, the self-extruding fastener according to the invention comprises three sections, that is, two screw thread section, three screw thread section and one screw thread section.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: December 30, 1980
    Assignee: Kabushiki Kaisha Yamashina Seikosho
    Inventors: Mituo Shimizu, Hidenori Miyake
  • Patent number: 4241290
    Abstract: An electrical heater device for heating a clinical mirror. The device comprises a housing having a top, bottom and side walls to define a hollow enclosure. Two spiral coiled electric heating elements are secured in the housing with their heat radiating surface spaced apart and facing each other in juxtaposition to provide concentrated heat in a mirror locating space therebetween. An opening is provided in the top wall in alignment with the mirror locating space through which the mirror can be inserted into the mirror locating space. A switch is positioned in alignment with the mirror locating space below the heating elements. The switch has an activating contact on an upper face thereof located in alignment with the opening in the top wall and the mirror locating space for activation by a clinical mirrow when the mirror element of such is inserted into the mirror locating space.
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: December 23, 1980
    Inventor: Roy E. Folland
  • Patent number: 4195543
    Abstract: An improved band saw blade for cutting hard ferrous or non-ferrous articles, wherein the band saw blade comprises an elongated, flexible, continuous ribbon having a back edge and a toothed edge, the ribbon having a sinoidal pattern in the plane of the ribbon, the wavelength and pitch of the ribbon being selected to enhance the cutting of the article but is selected to avoid chatter based on the rate of speed of travel of the ribbon, the pressure applied to the ribbon during the cutting and the average length of the cut to be made in the article to be cut. A method of constructing a band saw blade with a sinoidal pattern including the steps of successively squeezing portions of the saw blade or ribbon alternately near its back edge and near its toothed edge, whereby the blade is formed with a continuous wave pattern.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: April 1, 1980
    Assignee: Wallace Murray Canada Limited
    Inventors: Warren J. Tapply, Garth L. Smith
  • Patent number: 4195405
    Abstract: A mitten having a capability of being used as a glove which includes a knitted, elongated, tubular member having one end closed and formed with elongated finger and thumb portions forming a glove. A waisted wrist portion is connected to the glove, and a tubular mitten portion extends from the wrist portion in the opposite direction. The mitten is open at its free end with an overlapping flap covering the free end and a thumb portion formed in the mitten portion such that when the glove is worn, the mitten portion can be folded over the glove with the thumb of the mitten portion coinciding with the thumb portion of the glove and the overlapped portion covering the opening at the end of the tubular mitten over the fingers.
    Type: Grant
    Filed: March 15, 1979
    Date of Patent: April 1, 1980
    Assignee: Paris Glove of Canada Ltd.
    Inventor: Lilly Monk
  • Patent number: 4186845
    Abstract: The present invention relates to a liquid impervious liner securable in a shipping container for use in the shipping of material which can contaminate or corrode the container or the environment. The liner comprises a base sheet of foam material and a top cover sheet of polymeric material which is bonded to the base sheet and which extends over at least a portion of the walls of the container whereby to substantially constitute a tub which is liquid impervious. A typical use of these liners is for the transportation and shipping of raw skins of animals which are normally treated with rock salt before treatment by tanneries.
    Type: Grant
    Filed: August 1, 1978
    Date of Patent: February 5, 1980
    Inventor: Victor T. Podd
  • Patent number: 3961716
    Abstract: A mobile housing unit with an integral garage. The mobile home unit includes a chassis, a wheel structure suspended from the chassis at the rear end thereof, and front wheel receiving seats provided on the suspended wheel structure for receiving the front wheels of an automobile in the garage. A ramp platform for supporting the rear wheels of the automobile flexibly connected to the suspended wheel structure at the front end and to the mobile housing unit at the rear end thereof. A loading ramp is hingedly connected to the platform and is adapted to close the garage door. The largest proportion of the weight of the automobile is thereby supported on the independent wheel structure suspended from the chassis.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: June 8, 1976
    Inventor: Michel G. Renaud
  • Patent number: 3958432
    Abstract: In the wet treatment of tubular fabric a ballooning phenomena occurs as the tubular fabric is withdrawn from the wet treatment upstream from the squeeze rolls which squeeze out the excess liquid in the fabric. A plurality of pairs of rollers are placed upstream of the squeeze rolls such that each pair includes a roller on either side of the fabric and spaced apart a short distance in order to reduce and control the ballooning phenomena and to knead the fabric whereby to increase the impregnation of the liquid in the fabric.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: May 25, 1976
    Inventor: Edward I. Aronoff
  • Patent number: 3957070
    Abstract: An umbrella including a shortenable frame having dome ribs and a crown at the end of a stick. A cover is supported by the dome ribs and is attached to the crown and peripherally to the ends of the dome ribs. The cover is also attached to the dome ribs at intermediate points between the ends of the dome ribs and the crown. The cover includes a plurality of radially extending stiffened areas including a flexible hinge area at a position such that each radially extending stiffened portion is separated into at least two radially aligned portions whereby the cover material can fold therebetween. The full extent of the radially extending stiffened areas is provided on the portion of the cover between the crown and the intermediate attachment points.
    Type: Grant
    Filed: January 9, 1975
    Date of Patent: May 18, 1976
    Assignee: Bremshey Aktiengesellschaft
    Inventors: Josef Pieper, Ursula Pieper nee Piseberg
  • Patent number: 3940134
    Abstract: An elongated, rigid, torque-increasing sleeve telescopically received on the flexible handle of a hockey stick; the sleeve being freely slidable, at the player's option, along the stick and having a bore with a cross-section which prevents rotation of the sleeve on the hockey stick handle; the sleeve being optionally positionable, by the player, along the hockey stick handle and retained at a position by a friction brake which includes a flexible side wall of the rigid sleeve; one or more friction plates interposed between the inner surface of the sleeve and the outer surface of the hockey stick handle and activated by a plunger exposed at the outer surface of the sleeve and/or the sleeve includes a slotted side wall permitting opposed side walls to be gripped by a hockey player and frictionally engaged with opposite side surfaces of the hockey stick handle.
    Type: Grant
    Filed: December 5, 1973
    Date of Patent: February 24, 1976
    Inventor: Leo M. Bieganowski
  • Patent number: 3938099
    Abstract: A system for mechanically reproducing language characters in a cursive form in accordance with the natural style calligraphy of the language. Written letters are characterized by "links" with preceding and following characters, and mathematical rules describe the cursive script in terms of the form each letter takes dependent upon the preceding and following characters. The system includes input means for inserting characters, one at a time, and for providing coded representations of the characters. The coded representations are fed to decoder means which has as an output a selected combination of concatenation properties applicable to the character. Analyzer means analyzes variables dependent on the concatentation properties of a successive string of characters which comprise a character under consideration, a preceding character and a following character.
    Type: Grant
    Filed: March 15, 1974
    Date of Patent: February 10, 1976
    Assignee: Alephtran Systems Ltd.
    Inventor: Syed Salahuddin Hyder
  • Patent number: 3934231
    Abstract: A digital logic circuit, hereinafter referred to as an element, of which an interconnected plurality together with their connections to a control unit comprise a learning machine which synthesizes a boolean function of n variables as the result of a training procedure.Each element may operate as a two-input, one-input combinational circuit of one of four logical types, where the type is determined by the current internal state of the element. All four types are such that a (ZERO,ZERO) input pair gives rise to a ZERO output, and a (ONE,ONE) input pair gives rise to a ONE output, while the particular operation realized is determined by two function value units which compute suitable outputs under the (ONE,ZERO) and (ZERO,ONE) input pairs to the element.Three different species of element are described differing in their computation of heuristic responsibility. The "global search" species is useful when the function to be synthesized is not constant; there is a convergence theorem related to this species.
    Type: Grant
    Filed: February 28, 1974
    Date of Patent: January 20, 1976
    Assignee: Dendronic Decisions Limited
    Inventor: William Ward Armstrong
  • Patent number: RE30594
    Abstract: The present invention relates to a method to assist in the identification of a living body which comprises selecting a carrier, transcribing information as to the identity of the body on the carrier, and fixing the carrier to a hard mineralized portion of the body. The structure includes a miniaturized carrier of relatively inert material and having identifying intelligence thereon, wherein the carrier is adapted to be fixed or otherwise embedded on hard mineralized tissue of the body.
    Type: Grant
    Filed: June 7, 1979
    Date of Patent: April 28, 1981
    Inventor: Philip L. Samis