Patents Represented by Law Firm Drummond, Nelson & Nissle
  • Patent number: 4424643
    Abstract: An improved release mechanism for detachably connecting a secondary flight device to a toy parachute which is attached to a kite string and which is then, after traveling up the string with the wind, released from the string for free flight to the ground. The release mechanism includes a first member and a second member. The second member is shaped, contoured and dimensioned to detachably receive the first member. The toy parachute carries one of the members and the secondary flight device carries the other of the members, the members being maintained in engagement by the force of gravity acting on the secondary flight device when the toy parachute is engaging the kite string. The first member separates from the second member when the toy parachute is released from the kite string such that the secondary flight device and toy parachute separately free flight to the ground.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: January 10, 1984
    Inventor: Bill M. Tilghman
  • Patent number: 4418924
    Abstract: A sealing mechanism positioned between a movable piston wall and stationary cylinder wall concentric therewith. The sealing mechanism includes a circumferential groove formed in one of the concentric walls, and an O-ring positioned in the circumferential groove, the O-ring having a diameter less than the axial length of the groove and being compressed between a pair of opposing surfaces, a first surface formed integrally on the floor of the circumferential groove and a second surface formed integrally on one of the concentric walls. At least one of the pair of opposing surfaces has at least one upstanding serration for engaging the O-ring and forcing the O-ring to rotate when it moves from side to side in the circumferential groove.
    Type: Grant
    Filed: June 16, 1982
    Date of Patent: December 6, 1983
    Inventor: James F. Mack
  • Patent number: 4401468
    Abstract: An improved cyanide process sprays an ore-cyanide leach solution into air at a high velocity to oxygenate the slurry and catalyze the reaction between the ore and cyanide leach solution.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: August 30, 1983
    Inventor: Charles T. Henderson
  • Patent number: 4399578
    Abstract: A tool for cleaning a bathtub. The tool enables an individual standing adjacent a bathtub to readily reach and clean the inner vertical and horizontal surfaces of the bathtub. The tool comprises a cleaning head and an elongate handle shaped, contoured and dimensioned to allow the application of the cleaning head to bottom and side surfaces of the bathtub. The handle is attached to the cleaning head generally at the center of gravity thereof to facilitate the control and positioning of the cleaning head during utilization of the tool. The cleaning head includes a rotary circular pad for contacting and cleaning the surfaces of the bathtub and a motor for supplying motive power to drive the circular pad. The circular pad is resiliently compressible to facilitate the adaptation of the cleaning head to the various curved surfaces of the bathtub.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: August 23, 1983
    Inventor: Willard A. Bordeaux
  • Patent number: 4395014
    Abstract: Improved apparatus for forming the deck and associated coping of a pool. The pool defines and encloses a central area for receiving and retaining water and includes a substantially vertical wall; a horizontal support surface adjacent to and intersecting the pool wall to define a horizontal edge at the top of the wall; a flexible sheet of waterproof material for lining the pool, the liner having a peripheral edge; and a liner retainer secured to and extending continuously along the horizontal support surface adjacent the horizontal edge of the pool wall and having a channel extending along the length thereof contoured to receive the peripheral edge of the liner, the channel opening toward the central area of the pool. The improved apparatus includes a continuous strip of semirigid material and an elongate member for supporting the strip.
    Type: Grant
    Filed: November 17, 1981
    Date of Patent: July 26, 1983
    Inventor: Max W. Deason
  • Patent number: 4387877
    Abstract: Improved apparatus for forming the deck and associated coping of a pool. The pool defines and encloses a central area for receiving and retaining water and includes a substantially vertical wall and a generally horizontal bond surface adjacent the wall, the bond surface and pool wall intersecting at and defining a horizontal edge along the upper portion of the pool wall. The improved apparatus comprises a continuous strip of semirigid material and an elongate support member for maintaining the strip of material in position against the upper portion of the pool wall.
    Type: Grant
    Filed: November 17, 1981
    Date of Patent: June 14, 1983
    Inventor: Max W. Deason
  • Patent number: 4385722
    Abstract: A package comprising a body for containing the article(s) to be packaged, the body having a first opening closed by closure means movable to permit access into the interior of the body for removal of the article(s) contained within the body and a second opening for permitting insertion of article(s) into the interior of the body.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: May 31, 1983
    Assignee: Metal Closures Venus Packaging Limited
    Inventor: Arthur D. Brewill
  • Patent number: 4381737
    Abstract: An improved device for fluidly sealing rotary valves to the housing of a rotary valved internal combustion engine. The device comprises self-lubricating sleeve-like members which are compressed between the rotary valves and engine housing. The sleeve-like members lubricate the cylindrical surfaces of the rotary valves, fluidly seal the valves to the housing, and provide bearing surfaces which maintain the rotary valves in their proper position in the housing.
    Type: Grant
    Filed: November 13, 1980
    Date of Patent: May 3, 1983
    Inventor: William H. Turner
  • Patent number: 4380448
    Abstract: Improved apparatus for producing continuous form stationery by folding a strip of paper along lines of weakening formed therein.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: April 19, 1983
    Assignee: B. Bunch Company, Inc.
    Inventor: Earnest B. Bunch, Jr.
  • Patent number: 4379573
    Abstract: A business form having die cut label areas removable therefrom and an improved method for processing paper sheet substrate from a continuous supply thereof to produce the same. The method includes the steps of feeding paper substrate from the continuous supply thereof into paper processing apparatus for guiding and transporting the substrate; imprinting a business format on the paper substrate received by the processing apparatus; adhesively applying pieces of tape at spaced points on the paper substrate received by the processing apparatus to form binary areas on the substrate having greater thickness than the substrate, the binary areas including a pair of layers, a layer of tape applied in relief to the substrate, and a layer of substrate corresponding in surface area to the tape layer; and die cutting one of the layers to form at least one label area adjacent to and peelable from the other layer.
    Type: Grant
    Filed: October 9, 1980
    Date of Patent: April 12, 1983
    Assignee: Trade Printers, Inc.
    Inventors: Ronald C. Lomeli, Gary E. Stewart
  • Patent number: 4377245
    Abstract: A closure for sealing an opened container. The closure includes a pair of rigid members pivotally interconnected at a point on the periphery thereof for movement between at least two operative positions, a closed position with the members forming a generally circular top, each member having a face adjacent to an opposing face of the other member when the members are in the closed position, and an open position with the members rotated apart about the pivot point; a rigid collar member along an outer edge of each pivotally interconnected member, the outer edges generally defining the periphery of the circular top when the pivotally interconnected members are in the closed position; the inner surface of each collar member being adapted to sealingly engage the container when the pivotally interconnected members are in the closed position; and, a latch for securing the pivotally interconnected members in the closed position about the top of the container.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: March 22, 1983
    Inventor: Blyde L. Patty
  • Patent number: 4376332
    Abstract: A replacement stud for an original stud damaged in existing equipment consists of an oversized section having a threaded diameter larger than the original stud and a nominal section having a threaded diameter identical to that of the original stud. The nominal section is topped by a frangible, necked-down diameter capped by a suitable drive head for use with conventional hand or power drive tools. When the original stud has been damaged so as to preclude removal of a segment of it from the original stud hole, the stud hole is counterdrilled, enlarging its diameter and eliminating the broken segment. The larger threaded diameter of the snap-stud invention is set by the original stud's threaded diameter and the drill size predetermined for counterdrilling the original stud hole.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: March 15, 1983
    Inventor: Don J. Sandefur
  • Patent number: 4366961
    Abstract: Apparatus for constructing a pyramid. The apparatus comprises a circular piece of material having a circular front face; a circular back face; and a plurality of fold lines formed on at least one of the faces. The fold lines include diameter lines each traversing and passing through the center point of the circular face, and chord lines each shorter in length than the diameter lines, either end of the chord lines and the diameters lines coinciding with a point on the circumference of the face. The pyramid is formed by sequentially folding the circular piece of material along the fold lines.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: January 4, 1983
    Inventor: William E. Busse
  • Patent number: 4357033
    Abstract: A system for preventing the forward portion of a vehicle from downwardly pitching toward the road during braking of the vehicle. The vehicle includes a frame and a suspension system mounted on the frame for carrying a plurality of ground engaging wheels and for maintaining the frame in a generally level attitude during normal driving conditions. The braking system generally maintains the vehicle frame in its normal level attitude during the braking of the vehicle and comprises at least one hydraulic press adapted to interconnect the forward portion of the frame with the suspension system and having at least one chamber containing pressurized fluid, and a mechanism which maintains the fluid in the chamber at a normal operational pressure and is responsive to the deceleration of the vehicle to increase the pressure of the fluid above the normal operational pressure.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: November 2, 1982
    Assignee: Metron Logging, Inc.
    Inventor: Bert Lee
  • Patent number: 4356806
    Abstract: An exhaust gas recirculation system for an internal combustion engine. The internal combustion engine including at least one combustion chamber; an intake mechanism for delivering a combustible fluid mixture to the combustion chamber; an ignition system for igniting the combustible mixture; and an exhaust system for carrying exhaust fluid produced by the combustion of the combustible fluid mixture away from the combustion chamber. The exhaust gas recirculation system includes a mechanism for diverting a portion of the exhaust fluid passing through the exhaust system; a conduit attached to the diverting mechanism for carrying the diverted fluid to the intake mechanism of the internal combustion engine; a heat sink connected to the conduit for removing heat from the diverted portion of the exhaust fluid; and a filter integrated along the conduit to remove particulate from the diverted exhaust fluid.
    Type: Grant
    Filed: November 13, 1980
    Date of Patent: November 2, 1982
    Inventor: Charles W. Freesh
  • Patent number: 4350488
    Abstract: Apparatus for applying heat and cold to a tooth to determine if the nerves in the pulp of the tooth are alive.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: September 21, 1982
    Inventor: Laurance B. Davis
  • Patent number: D268402
    Type: Grant
    Filed: June 12, 1980
    Date of Patent: March 29, 1983
    Inventors: Robert Q. Riley, David L. Carey
  • Patent number: D269571
    Type: Grant
    Filed: November 25, 1981
    Date of Patent: July 5, 1983
    Inventor: Herbert W. Geshwind