Patents Represented by Law Firm Young, MacFarlane & Wood
  • Patent number: 5479988
    Abstract: A check valve for connection with the top end of a drillstring as a mud saver comprises a tubular valve member (18) which is axially shiftable within a tubular body (10) through a sleeve seal (19) which is mounted in the body (10) and which cooperates with ports in the wall of the tubular valve member (18) and which is disposed adjacent a downstream end of the tubular valve member. A compression spring (20) urges the tubular valve member (18) in the upstream direction into abutment with an upstream stop (15). The downstream end of the tubular valve member is closed by means of a frangible glass disc (21). The sleeve seal (19) is also axially shiftable in the body (10) in an upstream direction away from a downstream stop (17) and the compression spring (20) urges the sleeve seal (19) in the downstream direction. In a compact arrangement, the tubular valve member (18) is housed within an upstream hollow pin (30) of a saver sub particularly suited to a top drive arrangement.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: January 2, 1996
    Assignee: Robert Patrick Appleton
    Inventor: Robert P. Appleton
  • Patent number: 5477010
    Abstract: A safety plate assembly for use with a conventional electric outlet of the type adapted to be fitted in a panel opening and including an outlet box and an outlet mounted in the box and including a receptacle defining a pair of sockets receiving the prongs of an electric plug. The assembly includes an annular mounting plate of open frame configuration positioned against the panel in surrounding relation to the opening and a cover plate positioned over the mounting plate and lockingly secured thereto by coacting locking finger and tab on the plates. A slide is mounted on the cover plate for movement between a safety position in which slide apertures overlie solid portions of the cover plate and an operative position in which the slide apertures are aligned with open areas of the cover plate and with the sockets of the receptacle so as to allow the prongs of the electric plug to be passed through the slide apertures and through the open areas of the cover plate for insertion in the receptacle sockets.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: December 19, 1995
    Inventors: Dennis J. Buckshaw, James A. Clark
  • Patent number: 5474123
    Abstract: A tube shield for protecting the tubes of heat exchangers, such as boilers and condensers, from hostile elements. The tube shield includes an axially elongated arcuate protector member and a plurality of spring clips secured to the axial free edges of the protector member at spaced locations along the length of the protector member. The spring clips are sized and configured such that they splay outwardly as the protector member is pressed downwardly over an associated tube to pass the maximum diameter of the tube and thereafter move inwardly in a spring biased manner to bitingly engage the exposed portion of the tube to preclude inadvertent separation of the protector from the tube.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: December 12, 1995
    Inventor: Dennis J. Buckshaw
  • Patent number: 5473318
    Abstract: A door operator provides enhanced security for controlled vehicle access by employing transmitters having unique identity codes that are fixed in manufacture. A receiver includes a nonvolatile read/write identity code memory for storing the authorized identity codes. If a received identity code is found within this memory, then the user is authorized and the door is opened. Otherwise, the user is not authorized and entry is refused. A remotely disposed memory controller controls the authorized identity codes stored in the identity code memory, which is preferably electrically erasable programmable read only memory (EEPROM). The memory controller is preferably a desk top computer including a data base program with the identity of authorized users. The identity code of transmitter held by a formerly authorized used can be determined via the data base program and deleted from the identity code memory without requiring return of the transmitter.
    Type: Grant
    Filed: January 10, 1992
    Date of Patent: December 5, 1995
    Assignee: Active Control Technology Inc.
    Inventor: Brian Martel
  • Patent number: 5472179
    Abstract: An insert for use with a cooling bed plate transfer grid including a plurality of longitudinal side grid members and a plurality of transverse cross grid members extending between the side grid members and coacting therewith to define a plurality of grid pockets, each sized to removably receive an insert. The insert includes a housing sized to fit in the pocket and including front and rear end flange portions adapted to seat on successive cross members. The housing is fixedly secured to the successive cross members by J bolts which extend downwardly and beneath the respective cross members for clamping engagement with the respective cross members. The housing further defines a central slot in which a roller is mounted. The roller is mounted on the central journal portion of a pin and the pin further includes rectangular end portions slidably received in vertical slots defined by the housing at opposite sides of the roller.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: December 5, 1995
    Assignee: Allor Manufacturing, Inc.
    Inventors: Bernard J. Wendt, Darryl R. Wendt
  • Patent number: 5470641
    Abstract: A panel structure including four plastic sheets arranged in layered relationship and including an upper sheet, a lower sheet, an upper intermediate sheet positioned beneath the upper sheet, and a lower intermediate sheet positioned between the upper intermediate sheet and the lower sheet. The upper intermediate sheet includes a planar main body portion and a plurality of spaced downwardly extending bosses opening in the upper face of the upper intermediate sheet and each including an annular side wall and a lower end. The lower intermediate sheet includes a planar main body portion and a plurality of spaced upwardly extending bosses opening in the lower face of the lower intermediate sheet and each including an annular side wall and an upper end.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: November 28, 1995
    Inventor: Lyle H. Shuert
  • Patent number: 5471391
    Abstract: A method and apparatus for operating compacting machinery such as landfill, earth or asphalt compactors relative to a work site to compact the site material toward a desired degree of compaction. A first model representing the desired degree of compaction of the site and a second model representing the actual degree of compaction of the site are stored in a digital data storage facility. The machine is equipped with a position receiver to determine in three-dimensional space the location of the compacting portions of the machine relative to the site. A dynamic database receives the machine position information, determines the difference between the degree of compaction of the first and second site models and generates representational signals of that difference for directing the operation of the machine to bring the actual degree of compaction of the site into conformity with the desired degree of compaction.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: November 28, 1995
    Assignee: Caterpillar Inc.
    Inventors: Adam J. Gudat, Daniel L. Henderson
  • Patent number: 5469490
    Abstract: A light weight battery powered x-ray source capable of producing high intensity x-ray emissions with low power consumption. A modular construction locates all high voltage components including the x-ray tube, spark gap trigger, spiral capacitor and the secondary of a step-up transformer in a sealed canister which can be decoupled both mechanically and electrically by unscrewing a simple threaded coupling. A center module contains the primary of the step-up transformer, circuit boards for electronic components and a pulse counter/selector. A battery pack with rechargeable Nicad batteries is removably connectable to the center module. High intensity pulses are achieved in part by connecting the spiral capacitor at midlength to the spark gap trigger. An improved x-ray tube with light weight but effective lead shielding and an overall length of less than two inches is also disclosed.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: November 21, 1995
    Inventors: John Golden, Phillip Golden
  • Patent number: 5462431
    Abstract: A fuel enriched ignitor for a fuel gas burner appliance wherein a fuel enricher tube is provided with a coupling having a threaded insert which, by way of a metering orifice, matches the enricher tube to the particular fuel gas being used. By both two-element and three-element ignitors are disclosed. The ignitor is also illustrated in a gas supply system having a single main valve which serves both the enricher tube and the primary appliance burner.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: October 31, 1995
    Assignee: Solaronics
    Inventor: Farshid Ahmady
  • Patent number: 5462313
    Abstract: A quick connect coupling for tubing. The coupling includes a tubular male connector member adapted to be telescopically received within a tubular female connector member. The female connector member includes a tubular housing and a tubular retainer cap which is permanently bonded to the housing utilizing a sonic welding technique and which defines prong portions for latching coaction with an annular bead on the male member. The coupling further includes a unitary elastomeric seal positioned in a bore of the female member housing and defining a series of axially spaced, radially inwardly extending seal ribs slidably and sealingly engaging the outer circumferential surface of the male connector member.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: October 31, 1995
    Assignee: Form Rite Corporation
    Inventors: Perry J. Rea, Michael R. Miller, Gary T. Iler, William E. Stevens
  • Patent number: 5463715
    Abstract: Speech generation from phonetic code is carried out by a microcomputer based system which stores digitized waveform segments and appropriately joins the segments and outputs them to a digital to analog converter and then to a speaker. An allophone is generated for each phoneme designated by the phonetic codes according to the articulation type of each adjacent phoneme. Each phoneme is classified as neutral, labial, glottal, or medial according to its effect on the articulation of adjacent phonemes. Each phoneme is characterized by at least one center waveform dependent on the phonetic code, and an initial waveform and a final waveform, each of which depend on the phonetic code and the articulation type of the neighboring phoneme. Tables of waveform pointers are accessed according to phonetic code and articulation type, and other tables provide articulation types, times of each waveform portion, transition rate, fricative state, and pitch for each phonetic code.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: October 31, 1995
    Assignee: Innovation Technologies
    Inventor: Richard T. Gagnon
  • Patent number: 5460358
    Abstract: A power clamp including a clamp assembly which is moved by a power cylinder rapidly to an approximate clamping position and is thereafter moved by the power cylinder with an intensified force to the final clamp position. The clamp includes a support structure defining a guideway, a drive assembly secured to the piston rod of the power cylinder and slidably mounted in the guideway, a guide lever pivotally mounted to the support structure, and a clamp lever pivotally mounted to the guide lever. The drive assembly includes a drive pin which is received in guide slots in the guide lever and in the clamp lever.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: October 24, 1995
    Inventor: Jack J. Sendoykas
  • Patent number: 5460061
    Abstract: An adjustable control pedal apparatus for a motor vehicle including an accelerator control pedal assembly and a brake control pedal assembly. A motor is positioned between the control pedal assemblies and includes a motor drive shaft driving first and second cables secured to the opposite ends of the drive shaft. The cables extend respectively to the brake and accelerator pedal assemblies so as to provide rotary cable movement at each pedal assembly. A transmission at each pedal assembly converts the rotary cable movement to rotary movement of a screw member which slidably adjusts a pedal arm along an adjuster member. As the pedal arm moves along the adjuster member, the pivot axis of the assembly is moved so as to maintain a substantially constant feel for the pedal irrespective of the adjusted position of the pedal arm. The pivot axis is moved by a cam pin driven by the pedal arm and received in a slot in a cam member carrying the pivot axis pin.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: October 24, 1995
    Assignee: Comfort Pedals, Inc.
    Inventors: Harry L. Redding, Christopher Bortolon
  • Patent number: 5458372
    Abstract: A lightweight, flexible ski pole which is virtually indestructible comprises a filament-reinforced, polymeric matrix composite shaft having a diameter of less than 0.5 inches and a tensile strength on the order of 140,000 psi or higher. The shaft is of three-layer construction, having a center layer whose filaments are diagonally offset at a bias angle for lateral bending strength. The shaft may be hollow or solid, and may be formed by either a pultrusion or table-rolling method.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: October 17, 1995
    Inventor: David P. Goode
  • Patent number: 5454179
    Abstract: A frame for the display of a video cassette, audio cassette, or other similar item such as a compact disc.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: October 3, 1995
    Inventor: David B. Bulka
  • Patent number: 5454136
    Abstract: A non-contacting forced air dryer mechanism for vehicle laundering operations wherein the nozzles move rectilinearly relative to the vehicle surfaces and under the control of a sonar transducer which detects the vehicle surface and measures the distance between the vehicle surface and the outlets of the air nozzles. The control system is applied to both vertical and horizontal nozzles. The position control system is preferably a scissors mechanism which can be activated by means of a hydraulic cylinder. The top nozzle is preferably divided into a series of hollow tubular sections to permit the passage of vehicle antennae and mirrors. The side nozzle can be divided and arranged for progressive actuation to accommodate vehicles of varying height.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: October 3, 1995
    Inventor: Harry K. Gougoulas
  • Patent number: 5455655
    Abstract: A lamphouse for use with a photographic printer for controlling the exposure time of the additive primary colors in the lamphouse and thereby controlling the time of exposure of the light sensitive color print paper. The lamphouse includes a housing adapted to be positioned on the printer proximate the optical stage of the printer and defining a mixing chamber for directing light to the optical stage and a light generating assembly for delivering light to the mixing chamber. The light generating assembly is constructed as a plurality of structurally distinct modular subassemblies and the housing includes parallel side by side tracks to individually slidably receive each modular subassembly. Each modular subassembly is positioned in the housing and removed from the housing by sliding the modular subassembly along the respective track in the housing.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: October 3, 1995
    Inventor: Ray Hicks
  • Patent number: 5453500
    Abstract: Novel water-soluble mono and disaccharides of 1,2-dithiins, as well as methods for their synthesis and the synthesis of 3,6-bis(hydroxymethyl)-1,2-dithiin, are provided. The water-soluble compounds have useful medicinal applications, e.g., as an antifungal agent or antibacterial agent in a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: September 26, 1995
    Assignee: The University of Michigan
    Inventors: Masato Koreeda, Brian K. Shull, Wu Yang
  • Patent number: 5452051
    Abstract: A film tabbing apparatus and methodology for processing supply of photographic film including single frame chips and multiple frame strips. The chips and strips are moved along a linear feed path in a single file through the apparatus, a tabbing tape is moved along the linear feed path with the longitudinal edge of the tape positioned approximate an adjacent longitudinal edge of the film file, the proximate longitudinal edges of the tape and the film file are secured together utilizing adhesive tape, and a coded indicium is provided on the tape corresponding to each frame of the film file. The adhesive tape may be applied in an overlying relation to the seam between the film file and the paper tabbing tape, in an underlying relation to the seam, or tapes may be applied simultaneously in an overlying and an underlying relation to the seam. A human readable indicium is also provided on the tape corresponding to each frame of the film file.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: September 19, 1995
    Inventor: Ray Hicks
  • Patent number: D364442
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: November 21, 1995
    Assignee: Phillip C. Martel
    Inventor: Phillip C. Martel