Patents Represented by Attorney, Agent or Law Firm Robert C. Peterson
  • Patent number: 5217191
    Abstract: A system of pipe hangers or the like for supporting various fluid bearing pipes and conduits which are exposed to the elements and extend along the rooftops of buildings. The hangers include a foundation of pre-cast reinforced concrete using reinforcing bars and tubular goods. The concrete base is seated on an isolation pad which is adhered to the roof without the use of nails or other fasteners penetrating the roof. The concrete base includes tubular inserts cast in the base which provide ready assembly of the bracket supporting the yoke and roller portion of the yoke pedestal or the studs for yokeless pedestal. The pipe hangers are adjustable to accommodate the need for leveling and weight distribution for equalizing the roof loading. In another embodiment, the pipe hangers include brackets for supporting accessories such as conduits and clamps.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: June 8, 1993
    Inventor: Robert L. Smith
  • Patent number: 5182408
    Abstract: The present invention comprises reacting ammonium, sodium or potassium hydroxide or water soluble amines or amine derivatives with alpha-hydroxy carboxylic acid to prepare a neutral solution of the corresponding alpha-hydroxy carboxylic salt in a stoichiometric reaction.The alkali metal, ammonium, amine or amine derivative, alpha-hydroxy carboxylic acid salt is then added to solutions of zirconium which may be zirconium oxychloride, zirconium hydroxy chloride, zirconium acetate and the like, ammonia, water soluble amines or amine derivatives, diisopropylamine or a mixture of two or more of these bases, as well as soluble carbonates and/or bicarbonates of ammonium and alkali metals such as sodium and potassium, while mixing the solutions. The procedure produces a mildly acidic or basic solution of the zirconium alpha-hydroxy carboxylic chelate.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: January 26, 1993
    Assignee: Zirconium Technology Corporation
    Inventor: Sharif Sharif
  • Patent number: 5139290
    Abstract: A quick coupling for plastic pipe in which the ends of each plastic pipe are fitted with a metallic sleeve. The metallic sleeve is contoured with a hollow boss at one end and spaced apart from the boss is a radially extending circular groove. The metallic sleeve may be counterbored. The metallic sleeve may be embedded in the plastic pipe end by various heat forming techniques. Further, the plastic pipe may be internally threaded. Then a hollow plug of the same plastic as the pipe with external threads at one end is contoured to form a collar with the face of the unthreaded end. The collar is recessed to receive the boss. The metallic sleeve is fitted over the threads and seated with the boss in the recess of the collar. The plastic plug is then threadably engaged in the end of the plastic pipe and sealed with an o-ring. Two pipes, each having a metallic sleeve thereon, when aligned are coupled together by a mechanical clamp having keys which fit the circular groove of each pipe.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: August 18, 1992
    Inventor: Terry C. Shafer
  • Patent number: 4963078
    Abstract: A stress and torque reducing tool particularly useful in production of petroleum fluids from oil wells employing a reciprocating pump located within the well bore in the reservoir which is operated by means of sucker rods attached to a surface walking beam pump operating unit. The tool is deployed intermediate the sucker rod string and the plunger rod of the downhole reciprocating pump and provides a means for hydraulically dissipating shock forces encountered in the operation of the subsurface reciprocating pump occurring from fluid pound, gas pound and/or deliberately bottoming the plunger rod to avoid gas lock.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: October 16, 1990
    Inventor: John O. Agee
  • Patent number: 4945939
    Abstract: An aqueous liquid reservoir system has a flow line for circulating a portion of the aqueous liquid from the reservoir and returning such aqueous liquid back to the reservoir. The flow line has an injection means for inducing quantities of pH affecting liquid into the flow line. A pH probe means is coupled to the flow line upstream of the injection means for detecting the pH of the aqueous liquid from the reservoir. The system includes a computer control which compares the pH from the pH probe means with a preselected pH and activates dispensing means to provide a measured quantity of pH affecting liquid for injecting into the flow line responsive to aqueous liquid flowing therein to maintain the pH of the aqueous liquid within the preselected pH tolerance. The measured quantities of pH affecting liquid are provided by a control chamber means having a gravitational feed system for the pH affecting liquid.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: August 7, 1990
    Inventors: Richard Maxwell, David L. Pinnell
  • Patent number: 4920950
    Abstract: A collapsible camp stove having a frame supporting a grate therein for cooking meat or other food. A pair of end plates attached to the frame by hinges which allow pivotal movement of the end plates between a collapsed and erected position. A latching means locks the end plates in the collapsed or erected positions. The grate is of expanded metal to provide better gripping of the food items. The frame has a handle for convenient carrying of the camp stove when collapsed. The handle may be recessed flush with the frame when not in use. A removable cooking plate is provided which contains one or more apertures for exposing less than all of a pot or pan seated over the aperture or apertures to direct heat of the camp fire while reducing exposure of the cook or sides of the pots or pans from direct exposure to the camp fire. The bottom edges of the end plates opposite the hinges have crescent cutouts to provide four point footing for the camp stove.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: May 1, 1990
    Inventor: Jimmy D. Johnson
  • Patent number: 4919563
    Abstract: A vehicular trafficway or roadway barrier or space barrier for controlling access to the same. The apparatus is installed below the parking space or roadway and includes a retractable barrier which blocks the space being protected when erected and permits access when retracted. The apparatus herein referred to as Scopelock is an entirely self-contained unit which may be operated from normal electrical service or a battery. The entire unit is designed to be unlocked and removed from a casing that is permanently fixed into the ground. Spaceage material protects the unit from moisture. Scopelock can be operated by remote control or coin boxes or keys as desired. Typically, when in place, Scopelock prevents access to vehicular parking spaces while at the same time, capable of providing parking security by limiting the space between Scopelock and other barriers positioned around the vehicles, thereby providing security from theft of the vehicle.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: April 24, 1990
    Inventor: David L. Stice
  • Patent number: 4791681
    Abstract: A health care personnel uniform of light-weight material including a jacket or blouse for the uniform having a conventional type of breast pocket. At the bottom across the full width of the blouse is a pocket panel with a vertical seam in the center to form two pouch pocket compartments. The bottom portion of the pocket panel has a separate piece of material for reinforcing the bottom of the pocket which is integral with the hemline along substantially the full width of the blouse. The pouch pocket openings are set at a convenient angle for entrance of the hand into the pocket and disallowing objects from falling out of the pockets.The outboard pant pockets have similar closures as the outside blouse pockets and like all pockets the bottoms are reinforced.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: December 20, 1988
    Inventor: Tracy C. Dean
  • Patent number: RE32304
    Abstract: A gravity system, the only moving parts of which are the valves, uses only the system pressures, and opening and closing of valves to feed treatment liquids to an oil well. The chemical treatment liquid is stored in a drum above a volume chamber. The volume chamber has five lines connected to it, each with a valve. A feed line with a feed valve connects the volume chamber to the treatment drum. A vent line with a vent valve vents the top part of the volume chamber to the atmosphere. A liquid pressure line with a pressure valve connects the flow line (connected to the oil well eduction tube) to the volume chamber. A flush line with a flush valve connects the bottom of the volume chamber to the well annulus. A gas line with a gas valve connects the volume chamber to the annulus. When the vent valve and feed valve are open and all other valves are closed, the volume chamber will fill with liquid by gravity from the chemicals within the treatment drum.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: December 16, 1986
    Inventor: Richard Maxwell