Patents Represented by Law Firm Polster and Polster
  • Patent number: 4888849
    Abstract: A wheeled hand cart for use with a wet/dry utility vacuum cleaner drum is disclosed. A pair of wheel frames are mounted to the drum in spaced relationship to each other along a lower outer periphery of the drum. Each wheel frame has a horizontally extending passageway and a vertically extending channel that intersects and extends across each horizontally extending passageway. An upright handle section is positioned within the vertically extending channel of each wheel frame and has a transverse opening which is in alignment with the horizontally extending passageway of each wheel frame. Horizontally extending passageways of the spaced wheel frames are in alignment with one another to receive a wheel axle extending therethrough and also through the transverse openings of the upright handle sections. The wheels are mounted on the wheel axle for wheeled movement of the hand cart. A handle interconnects the upright handle sections to facilitate movement of the drum by the wheeled hand cart.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: December 26, 1989
    Assignee: Emerson Electric Co.
    Inventors: David R. Hult, Jeffrey L. Young
  • Patent number: 4887625
    Abstract: A collapsible cae or the like is disclosed as having a series of interfitting telescoping sections which are interlocked together when collapsed and interlocked against collapse when extended. The collapsible cane includes first interlocking elements for externally interlocking the interfitting telescoping sections together as a unit when collapsed, and also capable of being released, by hand pressure, to permit elongated extension of the interfitting telescoping sections. When extended, second interlocking elements are provided for internally interlocking adjacent telescoping sections together against collapse. The second interlocking elements may also be deactivated to permit collapse and telescoping of adjacent interfitting telescoping sections relative to one another for compact storage, when collapsed, and for subsequent re-engagement with the first interlocking elements to hold the telescoped interfitting sections together as a unit.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: December 19, 1989
    Assignee: Americane, Inc.
    Inventor: Arvo T. Archer
  • Patent number: 4888039
    Abstract: Apparatus for forming glass to metal hermetic seals in a terminal assembly of a housing part wherein an upwardly directed glass melting heating gradient is applied to a housing part having a glass sleeved terminal pin supportedly disposed in an aperture therein with sufficient heat intensity to flow the glass sleeve in an upwardly direction from bottom to top to fuse the terminal pin in the housing part with minimal voids.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: December 19, 1989
    Assignee: Emerson Electric Co.
    Inventor: Benjamin Bowsky
  • Patent number: 4886266
    Abstract: An exercise treadmill for forward and/or rearward walking. The treadmill has a frame with spaced side rails and spaced uprights extending upwardly from the front end of the side rails. Spaced front and rear rollers extend transversely between the side rails. An endless belt entrained about the rollers has an upper reach on which a user runs or walks. To maintain the belt in a predetermined path around the rollers, a guide is provided which imparts a resilient deflecting force on the lower reach to deflect the belt, adjacent its opposite marginal edge portions, prior to movement of the belt across a roller, as it moves from the lower to the upper reach of the treadmill. Where both forward and backward walking are desired endless belt guides are provided on the lower reach of the belt adjacent each roller to maintain the belt in the predetermined path, regardless of direction of movement. An adjustable elevating system includes idler pulleys mounted on uprights and a bedframe over which a cable is entrained.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: December 12, 1989
    Assignee: True Fitness Technology, Inc.
    Inventor: James A. Trulaske
  • Patent number: 4886990
    Abstract: A reversible permanent split capacitor (PSC) motor and method of designing such a motor employs a parallelogram lamination silhouette and distributes the winding in the core of the motor stator assembly so that maximum flux density in the core is approximately equal in each direction of motor rotation. The motor is designed to achieve high repetition reversal rates. The reversal rate and the equal performance attained in each direction, makes the design particularly suitable for washing machine applications.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: December 12, 1989
    Assignee: Emerson Electric Co.
    Inventor: Alan R. Barker
  • Patent number: 4885985
    Abstract: A grain drying system around the interior of a grain bin wall which dries grain adjacent the bin wall while minimizing air and heat loss above the level of grain stored in a bin is disclosed. The system is self-regulating and limits air flow to areas above the level of the grain in response to changes in grain level or air pressure in the system. In the grain drying system, vertical air passageways or tubes extend about the interior of the bin wall. The elongated passageways, which have air diffusing or outlet areas, are arranged in fluid communication with a plenum chamber below an air permeable grain supporting subfloor in the grain bin. Each of the passageways or tubes has a movable float slidable therein. When pressure in the plenum chamber reaches a pressure equal to or greater than a predetermined level at which the floats are calculated to operate, the floats then rise within the air passageways until equilibrium with grain created air resistance is reached.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: December 12, 1989
    Assignee: Grain Systems, Incorporated
    Inventor: Eugene B. Pollock
  • Patent number: 4884916
    Abstract: A structural mounting assembly for mounting a power transmission member, such as the disk portion of a gear, to a shaft wherein the disk portion has an open-ended quill extending therethrough sized to snugly receive a bushing that has one end adapted to snugly receive the extremity of the shaft and the other end arranged to be connected to an adapter mountable at the other open end of the quill.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: December 5, 1989
    Assignee: Emerson Electric Co.
    Inventor: Harold R. Johnson, III
  • Patent number: 4884723
    Abstract: A gasket for a hopper outlet is disclosed, particularly well-suited for use between the frame of the hopper and the frame of an unloading outlet for a railway hopper car. The gasket has a central metal frame carrying a pair of relatively hard, continuous elastomeric seals along each edge of the frame. Each of the seals has a lip which protrudes upwardly (or downwardly) and outwardly from the body of the gasket so as to be readily compressed upon initially mating with the frames to ensure sealing even if the frames are warped. Such a gasket may be retrofitted to existing outlets.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: December 5, 1989
    Assignee: ACF Industries, Incorporated
    Inventor: Richard H. Dugge
  • Patent number: 4882832
    Abstract: A method for manufacturing electric motor stator cores including forming and separating stator core laminations from a sheet of preselected material having a pattern including dovetailing and abutting rows of abutting circles with integral tab portions, each sized to define a core lamination and stacking a preselected number of the separated laminations to provide the basic stator core.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: November 28, 1989
    Assignee: Emerson Electric Co.
    Inventor: John G. Lewis
  • Patent number: 4883408
    Abstract: A dynamoelectric machine has a housing and a rotor assembly including a rotatable non-stepped shaft which projects through an opening in an end wall of the housing. A fan moves air through the machine to ventilate it and keep it cool. The fan is secured to an end of the shaft extending through the opening by a tab fitting in a groove formed in the shaft and a retention ring fitting over a hub portion of the fan in which the tab is formed.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: November 28, 1989
    Assignee: Emerson Electric Co.
    Inventor: Gary W. Borcherding
  • Patent number: 4882962
    Abstract: An angularly adjustable band saw is disclosed which provides the desired angular adjustment of an endless band saw blade relative to a workable surface for bevel and/or miter cutting of a workpiece. The worktable surface is part of a supporting worktable that includes a saw blade slot extending through the worktable surface. A frame support is fixed to the worktable below the worktable surface and a movable frame is operatively connected relative to the frame support. The movable frame includes an upper band saw supporting wheel above the worktable surface and a lower band saw supporting wheel below the worktable surface, with an endless band saw blade mounted for movement about the upper and lower band saw supporting wheels, including through the saw blade slot in the worktable surface.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: November 28, 1989
    Assignee: Emerson Electric Co.
    Inventors: Daniel A. Terpstra, Steven H. Plume
  • Patent number: 4882510
    Abstract: In an electric motor having a stator with end turn windings on opposed faces thereof and a rotor and shaft extending through the stator, an improved motor cooling arrangement including a baffled cage-like fan separately and proximally surrounding the end turns on one face of the stator and a particulate trap mounted on the shaft in cooperation with the baffled cage-like fan.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: November 21, 1989
    Assignee: Emerson Electric Co.
    Inventor: Barry M. Newberg
  • Patent number: 4880148
    Abstract: A fluidation kit for retrofit installation on a pneumatic outlet for a railway covered hopper car is disclosed. The outlet includes an outlet pan having downwardly sloping walls. The kit includes at least one air permeable fluidizing membrane on the inside face of the outlet pan wall to fluidize a powdered or pulverant lading. An externally mounted manifold assembly is attached to outside surfaces of the outlet pan for connecting the air permeable fluidizing membranes on the inside surfaces of the downwardly sloping walls of the outlet pan to a source of fluidizing air. The air permeable fluidizing membrane is supported in a peripheral extending frame member which supports the air permeable fluidizing membranes a small predetermined distance above the sloping wall surfaces to provide a plenum therebetween for diffusing fluidizing air throughout the entire extent of the air permeable fluidizing membrane.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: November 14, 1989
    Assignee: ACF Industries, Incorporated
    Inventor: Kenneth D. Schmidt
  • Patent number: 4879932
    Abstract: A manually operable paper slitting device has upper and lower platens normally biased apart from one another. The upper platen has diagonally extending and spaced parallel slitting blades extending downwardly therefrom for cooperation with spaced complementary slots formed in the lower platen. A resilient and compressible paper hold down and stripper element extends downwardly from the upper platen in surrounding relationship to the spaced slitting blades. The spaced slitting blades have an inclined bottom cutting edge which first pierces and then permits slitting of the paper along the cooperating slots in the lower platen. The resilient and compressible paper hold down and stripper element holds the paper from moving during and after the slitting operation.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: November 14, 1989
    Inventors: William J. Scalise, Donna J. Scalise
  • Patent number: 4879453
    Abstract: A self-regulating heat producing strip is disposed along each wall of a room. The strip includes at least one pair of spaced apart electrical conductors extending longitudinally along the base of at least one wall and spaced therefrom. Self-limiting conductive material is in physical contact with and forms a heat generating zone between the conductors. An electrically insulated jacket longitudinally covers the conductors and the self-limiting conductive material. Connectors are provided for connecting the conductors to a power source to generate heat in the heat generating zone between the conductors.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: November 7, 1989
    Assignee: Emerson Electric Co.
    Inventor: Donald M. Cunningham
  • Patent number: 4877256
    Abstract: A tossing game is disclosed which utilizes a pair of target areas or trays placed on the ground at a desired distance from one another. Each of the target areas or trays has a plurality of cups of varying heights. The players toss projectiles (preferably disks) from a position adjacent one of the target areas to the other. Points are scored by landing a projectile either on the tray or in one of the cups, with the number of points increasing when the projectile lands in the taller ones of the cups.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: October 31, 1989
    Inventor: David R. Falloon
  • Patent number: 4875412
    Abstract: A blanket cleaner for removing dust, lint or ink from a blanket cylinder in an offset printing press during the uninterrupted course of a press run. A first fluid cylinder periodically urges a brush against the blanket cylinder and retracts the brush from the blanket cylinder. Retraction of the brush permits the dust and lint swept before the brush to fall onto a door of a lint catcher. The door is raised and lowered by action of a second fluid cylinder. Operation of the second fluid cylinder lags the operation of the first fluid cylinder by an interval of time sufficient to permit the dust, lint or ink to fall onto the door. In the preferred embodiment, the structure includes a device for removal of debris from the lint catcher.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: October 24, 1989
    Inventors: Norman D. Wright, Gary C. Glanzner, John A. Signorelli
  • Patent number: 4875417
    Abstract: An end structure for a railway car, and more particularly a covered hopper railway car, is disclosed which has side sill extensions extending diagonally inwardly from the ends of the side sills to the center stub sill for transmitting substantially all of the longitudinal, horizontal loads between the center stub sill and the side sills. A generally vertically extending truss is provided between the center stub sill and the end of the car above the center stub sill so as to withstand overturning moments and vertical loads between the end of the car and the center stub sill. A connector casting rigidly interconnects the side sills and the side sill extensions. A transition plate is in face-to-face engagement with the side sheets at the outer ends of the side sills so as to facilitate the transfer of load between the side sills and the side sheets. A cutout is provided in the bottom of the side sills at the ends thereof so as to enable interior welds to be made.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: October 24, 1989
    Assignee: ACF Industries, Incorporated
    Inventors: John W. Coulborn, John A. Krug
  • Patent number: D305146
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: December 19, 1989
    Inventor: Wayne F. Novak
  • Patent number: D305167
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: December 19, 1989
    Assignee: Emerson Electric Co.
    Inventors: Robert Case, James D. Morrow, George O. Podd, III