Patents Represented by Law Firm Barrigar & Oyen
  • Fishing line device
    Patent number: 5113614
    Abstract: A lure device comprises a float from which is pivotably suspended a hanger having two arms which guide and secure the fishing line. The securing of the fishing line is achieved by a helical member and a complementary pin. The helical member may have a central guide to assist in winding the line through the helical member.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: May 19, 1992
    Inventor: Toshio Morita
  • Protective clothing incorporating coil springs
    Patent number: 5113526
    Abstract: Previous types of armored safety workwear are too inflexible, heavy or expensive to be useful. The present invention provides an article of protective clothing comprising a flexible supporting material and a plurality of elongated coil springs held in close proximity to the surface of said supporting material at spaced locations. Preferably, the coil springs are free to rotate in relation to the supporting material. The coil springs are held in elongated pockets secured to the surface of said supporting material.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: May 19, 1992
    Inventors: Enoch Y. S. Wang, Solomon H. Wang
  • Method and apparatus for detecting flame with adjustable optical coupling
    Patent number: 5107128
    Abstract: A method of detecting flame within a region where flame is expected. Radiation emissions from the region are measured within selected portions of the visible and infra-red frequency bands. Spectral characteristics of the two measurements, including their auto spectra, coherency and transfer function, are derived. The derived spectral characteristics are compared with prestored spectral signatures representative of the spectral characteristics of radiation emitted from the region within the selected portions of the visible and infra-red frequency bands while known flame conditions prevail within the region--thereby estimating the deviation of the derived spectral characteristics from the prestored spectral signatures. The deviations aforesaid are compared with predetermined threshold alarm values to assess the presence or absence of flame.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: April 21, 1992
    Assignee: Saskatchewan Power Corporation
    Inventors: Peter W. N. Davall, John D. Spencer
  • Taut wire sensing apparatus
    Patent number: 5103207
    Abstract: A sensor post has a hollow interior and a semi-rigid surface which flexes in response to an applied force. Sensor bars are mounted to the semi-rigid surface in a cantilevered fashion, and include an intermediate electrically insulated section located inside the interior of the sensor post. The sensor element mounting means is rigidly mounted to a portion of the sensor post which remains essentially stationary during an intrusive event. Sensing elements are made of a flexible semi-conductive sensing material, whose resistance increases when the material is stretched, and are mounted so as to straddle an electrically insulated section of the sensor bars. A signal analysis means detects an increase in the resistance of the sensing elements and generates an alarm.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: April 7, 1992
    Assignee: Hitek-Protek Systems Incorporated
    Inventors: Reginald J. Kerr, Malcolm Saubolle
  • Vortex ring mixers
    Patent number: 5100242
    Abstract: A method of mixing fluids and mixing equipment is disclosed wherein an orifice plate is caused to be reciprocated at right angles to the plane of the orifice plate in a fluid to generate a ring vortex through the orifice, the orifice in the plate and the stroke of the plate are defined by the relationship 0.8.ltoreq.L/d.ltoreq.3.8, where L is the stroke of the plate and d is the diameter of the orifice.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: March 31, 1992
    Inventor: Brian Latto
  • High security lock and latch for sliding doors
    Patent number: 5098139
    Abstract: Prior latches for sliding doors typically lock only from the inside of the door. The present invention provides a lock and latch system which allows the sliding door to be locked using a key from inside or outside the door, allowing the home owner to prevent unauthorized access by the picking of the external lock or breaking of the glass door and releasing of the lock from the inside. This is accomplished by providing a lock and latch in which the latch hook is rotated either by an internal handle or an external key. A rotating lug member, which is rotated from the interior by a key, can be engaged to block rotation of the latch.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: March 24, 1992
    Inventor: Leif T. Larsson
  • Skylight drainage apparatus and method
    Patent number: 5094040
    Abstract: A skylight comprises a window frame, a support frame supporting the window frame, a flange fixed to and extending outwardly around the base of the frame, a flange trough formed in and circumscribing the flange, at least one outlet in the flange trough, and a collector trough for roof-embedded positioning beneath the flange trough outlet, the collector trough having a roof-penetrating outlet.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: March 10, 1992
    Inventor: Terry M. Bunka
  • Mailbag support harness
    Patent number: 5088634
    Abstract: A harness for supporting a mailbag at waist level proximate to the front of a lettercarrier's body. The harness supports the weight of the mailbag about the lettercarrier's center of gravity and facilitates more efficient sorting and delivery of the mail.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: February 18, 1992
    Inventor: Terrence R. MacLaren
  • Process for fixing wooden articles pressure treated with chromated-copper-arsenate
    Patent number: 5089302
    Abstract: This invention is directed to a process for accelerating the fixation of chromated-copper-arsenate (CCA) preservative in wooden articles. The invention particularly pertains to a process of fixing CCA in softwoods such as lodgepole pine, so that it does not leach. A process of fixing chromated-preservatives in freshly treated wood by applying moderate heat to the treated wood while initially maintaining the treated wood in a highly humid or saturated atmosphere, and subsequently maintaining the atmosphere about the freshly treated wood at a controlled equilibrium moisture content level.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: February 18, 1992
    Assignee: Bell Pole Co. Ltd.
    Inventors: John N. R. Ruddick, George H. Eaton, Douglas B. Whiting
  • Mattress and mattress cover
    Patent number: 5081728
    Abstract: A mattress comprising a plurality of parallel mattress blocks, and a mattress cover for retaining the mattress blocks together as a unit. The mattress cover has a plurality of projecting segments for insertion between adjacent mattress blocks.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: January 21, 1992
    Inventor: Charles W. Skinner
  • Bismuth molybdate gas sensor
    Patent number: 5082789
    Abstract: A bismuth molybdate gas sensor which provides stable sensitivity to gases such as alcohol, ketones, alkenes, and long chain alkanes is disclosed. Sensors comprising a mixture of the Bi.sub.2 Mo.sub.3 O.sub.12 and Bi.sub.2 MoO.sub.6 phases of bismuth molybdate; or, bismuth iron molybdate are particularly effective. The bismuth molybdate mixture; or, the bismuth iron molybdate may be deposited as a thin film on a substrate or may take the form of a sintered powder.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: January 21, 1992
    Assignee: Simon Fraser University
    Inventors: Stanley R. Morrison, Norma J. Hykaway, William M. Sears, Robert F. Frindt
  • Locking tab for hook-in type shelving
    Patent number: 5082388
    Abstract: Apparatus for securing a hooked member to a post after engagement of the hooked member with the post. The hooked member has vertically aligned upper and lower hooks. A deformable locking tab is formed atop the lower hook, beneath a recessed web portion of the hooked member. The locking tab has top, rear and front edges. A locking arm projects forwardly from the front edge. A first notch is cut in the top edge; and, a second notch is cut in the recessed web portion, adjacent the first notch. A levering implement such as a screwdriver can be fitted between the notches and used to pry the locking tab away from the locked position if it is desired to remove the hooked member from the post.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: January 21, 1992
    Assignee: E-Z-Rect Manufacturing Ltd.
    Inventor: Achim Lauterbach
  • Oil recovery system and apparatus
    Patent number: 5075014
    Abstract: The present invention provides a self-propelled remote-controlled liquid hydrocarbons recovery or liquid hydrocarbons skimming vehicle (ROV) with an on-board liquid hydrocarbons/water separation apparatus, and a liquid hydrocarbons spill cleanup system incorporating the ROV. The ROV has a gimballed funnel for skimming liquid hydrocarbons from the surface of the water and directing it to a centrifugal separator. The ROV forms part of an oil spill cleanup system which can be deployed by aircraft and remotely operated.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: December 24, 1991
    Assignee: IMC-International Marketing of Canada Corp.
    Inventor: Fred M. G. Sullivan
  • Electrochemical cogeneration of alkali metal halate and alkaline peroxide solutions
    Patent number: 5074975
    Abstract: This invention relates to a process and apparatus for the electrosynthesis of oxygenated halogen salts of alkali metals such as alkali metal halate, alkali metal hypohalite and alkali metal perhalate and an alkaline solution of hydrogen peroxide in the same electrochemical reactor. The invention also relates to a method for oxygen depolarization of cathodes in reactors that are used for the electrosynthesis of oxygenated halogen salts of alkali metals. The invention also relates to a method for the electrosynthesis of oxygenated chlorine salts of alkali metals which avoids the need to use chromates that are used in conventional chlorate production for the suppression of the cathodic reduction of hypochlorite.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: December 24, 1991
    Assignee: The University of British Columbia
    Inventors: Colin W. Oloman, Eric Kalu
  • Method of preparing a new ultra-fine particle transition alumina
    Patent number: 5072886
    Abstract: A novel method of preparing a new transition alumina fractured into ultra-fine particles which have utility inter alia as catalysts. The method of preparing this new alumina fractured into ultra-fine particles comprises: (a) introducing an alkali metal into the pores of a porous alumina, and (b) immersing the alkali metal-treated alumina in water whereupon hydrogen gas is generated and fractures the alumina into ultra-fine particles.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: December 17, 1991
    Assignee: Simon Fraser University
    Inventors: S. Roy Morrison, Bijan K. Miremadi
  • Hedge trimmer support carriage
    Patent number: 5070685
    Abstract: A wheeled carriage for supporting a portable hedge trimmer for use as a ground foliage mower. The carriage includes a frame for supporting the hedge trimmer motor chassis and a bar extending laterally of the frame for releasably securing the hedge trimmer cutting blade in a generally horizontal orientation close to the ground surface.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: December 10, 1991
    Inventor: Edward R. Galt
  • Container
    Patent number: D322212
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: December 10, 1991
    Assignee: Exclusive Enterprises Ltd.
    Inventors: Alfred J. Bourassa, Roland H. Bourassa, Leonard T. Girard
  • Sunshade for an infant's car seat
    Patent number: D322372
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: December 17, 1991
    Inventor: Natalie A. Prowse
  • Toothbrush holder
    Patent number: D323090
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: January 14, 1992
    Inventors: John Santarelli, Carmine Santarelli, Gina Schipani
  • Egg display stand
    Patent number: D325325
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: April 14, 1992
    Inventor: Christian B. Cadman