Patents Represented by Law Firm Jeffers, Hoffman & Niewyk
  • Patent number: 5094674
    Abstract: A device for separation of air from fiber suspensions of flotation devices which are heavily air- and foam-laden or represent a mixture of fluid and foam features a hydrocyclone whose inlet opening is arranged least 2.5 m below the outlet opening of the flotation device for the air-laden fluid or mixture. The separation section of the hydrocyclone is a slender, truncated cone-shaped body on whose pointed (thin) end the deaerated fluid is withdrawn. In this outlet opening there is a back pressure maintained, so that the inlet opening is not completely covered by the vortex of the fluid, leaving still a sufficiently free entrance cross section for the foam. Above the entrance section of the hydrocyclone a mechanical foam eliminator with a rotor is arranged, the rotor comprising an impeller wheel which is provided with radial blades. A funnel-shaped suction socket feeds the foam-air mixture to the impeller wheel.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: March 10, 1992
    Assignee: J. M. Voith GmbH
    Inventors: Peter Schweiss, Hans-Dieter Dorflinger, Michael Nolte
  • Patent number: 5087849
    Abstract: Elongated thin strip stock is blanked to form interlocking laminas for electric motor or generator rotors or stators at successive blanking stations. At a final assembly station the laminas are stacked and pressed into interlocking relationship. In response to an operator input a predetermined number of reversals, or half turns about the stack axis of the previously stacked lamina are provided in order to compensate for nonuniform strip thickness to obtain a rotor or stator of substantially uniform height. Alternatively the thickness of the strip stock is gauged at transversely spaced points on the strip to determine cross feed thickness variation in the strip whereupon the stacked laminas are automatically provided with a number of reversals about the stack axis in response to a thickness differential that would result in a parallelism error in the stack that exceeds a predetermined amount.
    Type: Grant
    Filed: March 22, 1988
    Date of Patent: February 11, 1992
    Assignee: L H Carbide Corporation
    Inventor: Thomas R. Neuenschwander
  • Patent number: 5082302
    Abstract: A dual drive bicycle having a steerable front wheel and a rear wheel that is driven. A foot-powered drive system includes a first rotatable shaft extending transversely to the bicycle. A rotatable drive sprocket is operatively connected to a second shaft rotatably mounted on the steering post in which the front wheel is mounted. A rotatable driven sprocket is mounted on the first shaft and is capable of rotating same for forward drive. A continuous drive chain extends about the drive sprocket and the driven sprocket. A third rotatable shaft is mounted on the steering spindle so as to pivot with the front wheel when the latter is steered. A universal joint connects the second and thrid shafts at a location above the steering shaft. A further continuous chain and cooperating sprockets together with a hand-crank are provided to rotate the third shaft.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: January 21, 1992
    Inventor: Ernesto M. Nacar
  • Patent number: 5079413
    Abstract: In a card reader for reading information from a card which may contain the information as optical, magnetic, electronic or physical data, inside a casing is provided a carriage which carries the card and is adapted to be conveyed from an outer position to an inner position by a linear drive mechanism. By not using a pair of drive and pinch rollers as opposed to conventional card readers, the card is free from contamination by the rollers, and the operation reliability of the card reader is improved. Further, the elimination of rollers also contributes to the reduction in the overall height of the card reader. The clamp mechanism for securing a card to the carriage may be provided with interlocking means which prevents the movement of the carriage until a card is securely gripped by the clamp mechanism.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: January 7, 1992
    Assignee: NHK Spring Co., Ltd.
    Inventor: Hitoshi Sasaki
  • Patent number: 5072818
    Abstract: The invention concerns an elastic clutch including a hydraulic damping device wherein a viscous damping medium is displaced through predetermined gaps upon occurrence of large angles of rotation. To that end, a cam arranged on one clutch half plunges into a capsule type displacement chamber. The cam features friction elements which in the plunging make elastic and sealing contact with the sidewalls of the capsule, thereby causing both an effective sealing of the displacement chamber and also a frictional damping which supports the hydraulic damping. The disk type second clutch half can, during operation, more freely adjust within the clutch, which simplifies the manufacture.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: December 17, 1991
    Assignee: J. M. Voith GmbH
    Inventor: Viktor Kuhne
  • Patent number: 5069937
    Abstract: A method of preparing a roughened substrate surface for subsequent coating with a fluorocarbon polymer in a liquid medium. The surface of the substrate is thermally sprayed with a stainless steel alloy containing from 25 to 35 percent by weight of chromium. A metal-coated substrate produced by this method and an article having thereon a fluorocarbon surface coated by this method are also described.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: December 3, 1991
    Assignee: Whitford Plastics Limited
    Inventor: Nicholas J. Wall
  • Patent number: 5067731
    Abstract: The present invention is a nock adapter for mounting a nock to an arrow shaft. The nock adapter has holes at each end for engaging a shaft and a nock, respectively. In one form, the present invention fits within the arrow shaft and is capable of mounting a standard nock on its tapered mounting surface, or an A.C.E. nock which engages a bore of the nock adapter. In another form, the present invention receives the shaft of an arrow at one end and receives an A.C.E. nock at the other end, while having a generally cylindrical outer surface for streamlining the flight of the arrow. The nock adapter is preferably made of aluminum for its structural rigidity and light weight.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: November 26, 1991
    Inventor: Wayne J. Bickel
  • Patent number: 5063878
    Abstract: The present invention is a support assembly for a side mount water regulator in a watering system for fowl and small animals. A support bracket is connected to a ballast pipe of the watering system to provide a boss for supporting the regulator when attached. The resulting assembly provides a strong and durable support similar to end mount regulators but allow the regulator to be located anywhere on the conduit of the water supply system.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: November 12, 1991
    Assignee: Avtron, Inc.
    Inventor: Robert H. Hostetler
  • Patent number: 5064207
    Abstract: A sealing ring for sealing in a pipe joint an annular space between a socket end and a spigot end introduced therein comprises an annular sealing portion (8) consisting of elastically yielding sealing material and a substantially annular reinforcing portion (10) consisting of a material which is rigid in relation to the elastically yieldable material, the sealing portion (8) and the reinforcing portion (10) being fixedly connected with each other at the connection surface (18). The outer surface (40) of the sealing ring has a surface portion which is of a shape corresponding to the shape of the connection portion as parallelly displaced in the axial direction of the ring. The invention also relates to a mould for manufacturing such a sealing ring by means of injection moulding.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: November 12, 1991
    Assignee: Forsheda AB
    Inventor: Christer Bengtsson
  • Patent number: 5063794
    Abstract: The present invention is an improved key for an in-line transmission. The key is located within a channel in the shift shaft and selectively engages keyways of gears disposed about the shift shaft. A shift fork and collar axially move the key within the shift shaft by engaging and moving the base of the key. The key includes a shoulder which connects the head and the shank portion of the key, with the shoulder being thicker than the shank to cause more of the key to be supported within the shift shaft channel and thereby the key is better able to withstand the shearing forces which result from the rotational coupling of the shift shaft and the gears. The shoulder includes the portion of the key which extends out of the channel to the keyway and connects with the head, and which also faces the same direction as the head.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: November 12, 1991
    Assignee: Tecumseh Products Company
    Inventor: Roland L. von Kaler
  • Patent number: 5064020
    Abstract: A hunting device that is selectively convertible between a tree stand position and a reclined sitting position, thus providing a single apparatus for hunting both large and small game. The apparatus includes a support member, which is capable of pivoting relative to a base member, such that when the apparatus is in the reclined sitting position, the support member pivots to allow the hunter to assume the reclined position. The support member is spring biased in the upright position to allow the hunter to quickly shift from a reclined position to an upright sitting position. In the tree stand position, the base member elevates the support member against the trunk of a tree to allow the support member to serve as an elevated platform for the hunter. The base member includes a first section and a second section pivotally connected to the first section so that the apparatus may be folded into a hand-operated cart with detachable wheels.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: November 12, 1991
    Inventor: Bruce A. Eagleson
  • Patent number: 5064120
    Abstract: Apparatus for use in spray-up construction of a fiberglass article in an open mold includes a manually operable spray gun for spraying liquid resin and liquid catalyst, and for chopping and emitting fiberglass roving together with the resin. A positive displacement resin and catalyst pump operated by an airmotor pumps resin and catalyst to the spray gun. A pneumatic electrical switch on the air-motor monitors air exhaust therefrom and is closed upon each air-exhaust pulse. The number of air-exhaust pulses of the air-motor is proportional to the cumulative amount of resin pumped. An electronic counter electrically connected to the pneumatic switch counts the number of switch closings and drives an LCD numerical display which displays the number of pulses counted. The LCD display is located on the spray gun where it can be seen by the operator during operation of the spray gun, such that the operator is continually apprised of the amount of resin which has been dispensed.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: November 12, 1991
    Inventor: Noel E. Luttrell, Jr.
  • Patent number: 5064042
    Abstract: The invention concerns a torsionally elastic clutch whose clutch halves are nested in disk fashion and feature window-shaped cutouts which house tangentially arranged helical springs, with an outer guide body arranged in the outer peripheral area of the individual spring and preventing the spring from buckling, which body is shorter than the spring. The clutch is characterized in that an inner guide body is provided also within the individual spring, which body is shorter than the spring, and in that the two guide bodies are in relation to the spring fixed in such a way that one guide body will remain constantly coordinated with the one end area of the spring and the other guide body constantly with the other end area of the spring.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: November 12, 1991
    Assignee: J. M. Voith GmbH
    Inventors: Viktor Kuhne, Hark Twisselmann, Franz Brenner
  • Patent number: 5062964
    Abstract: In a flotation system, the generated quantity of foam is determined and, independent thereof, process parameters which directly or indirectly affect the generated foam quantity are reduced in their quantity depending on foam quantity. This is brought about by reduction of specific substance flows and also such substance flows that circulate in a flotation system. Production waters used for dilution are partly replaced by fresh water. This precludes an excessive amount of generated foam from causing difficulties in the operation of a flotation system.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: November 5, 1991
    Assignee: J. M. Voith GmbH
    Inventors: Herbert Ortner, Lothar Pfalzer
  • Patent number: 5062391
    Abstract: The present invention is a bracket insert for water supply system for fowl and small animals. The system includes hangers which engage a ballast pipe connected to a conduit having a plurality of dispensing valves. The ballast pipe and conduit are connected by a bracket assembly which includes holes in a peripheral wall. To avoid undesirable accumulation of particles within the bracket, a bracket insert is provided which fits within the interior of the bracket assembly and physically blocks passage of any particles through the holes.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: November 5, 1991
    Assignee: Avtron, Inc.
    Inventor: Robert D. Hostetler
  • Patent number: 5060447
    Abstract: A tie rod with a fastening section presenting several spreading cones is provided with a cage which divides the hardenable mortar composition used for the fastening in a cylindrical bore hole into segments. On the occurrence of a crack through the fastening ground of the bore hole, a respreading of the mortar shell formed by the hardenable mortar composition is made possible by a tensile force on the tie rod.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: October 29, 1991
    Assignee: Upat GmbH & Co.
    Inventors: Manfred Rinklake, Albert Frischmann, Anisi Daryoush, Paul Steurer
  • Patent number: 5060364
    Abstract: An apparatus for inserting coils and wedges into a dynamoelectric machine stator core.The apparatus includes a housing and an array of circumferentially spaced elongated wedge guides mounted on the housing for guiding wedges during insertion thereof into a stator core. Ends of the wedge guides are disposed adjacent the stator core. A plurality of elongated blades cooperate with the wedge guide array for axial movement relative to the wedge guides. A stripper is operatively mounted within the plurality of blades for axial movement relative to the blades. A wedge support is associated with the stripper and the wedge guides for supporting wedges at points intermediate the stripper and the ends of the wedge guides. The wedge support is a disk with a cylindrical outer surface from which a plurality of fins extend radially outwardly for contacting the wedges at intermediate points between the stripper and the ends of the wedge guides.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: October 29, 1991
    Assignee: Advanced Machine & Tool Corporation
    Inventor: Mark A. Scherer
  • Patent number: D321248
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: October 29, 1991
    Assignee: Inter-City Products Corporation (USA)
    Inventors: Mitchell L. Wilgus, Roger H. Ramsey
  • Patent number: D321367
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: November 5, 1991
    Inventor: Sisira Ranasinghe
  • Patent number: D322120
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: December 3, 1991
    Assignee: Forsheda AB
    Inventor: Frank du Gay