Patents Represented by Attorney, Agent or Law Firm Edwin H. Crabtree
  • Patent number: 8329105
    Abstract: A lightweight, compact, easy-to-use, portable furnace used for quickly assaying crushed ore samples in the field and used by prospectors, miners, and geologists. The portable furnace can also be used for smelting precious metals and refining and recycling different metals. The furnace includes a metal stand having a stand base with a first end portion with a dish opening therein and a second end portion with an upwardly folded heat shield. The heat shield includes a nozzle groove therein for receiving a gas nozzle. The gas nozzle is part of a gas blow torch having a handle and a gas tank. The stand base also includes first and second sides folded downwardly for holding the metal stand above a flat surface. A bottom of a scorifying dish is received in the dish opening. A cupel is received inside the open top of the scorifying dish. The cupel is adapted for receiving a crushed ore sample therein to be assayed. A dish lid is received on top of the scorifying dish.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: December 11, 2012
    Inventors: Richard E. Sweeny, William B. Lewelling
  • Patent number: 8286296
    Abstract: A folded hand towel having an upper towel portion used as an ice and beverage holder pocket and adapted for attaching to a golf bag. Ice cubes received in the pocket and when melted, provide moisture for wetting a lower towel portion for cleaning golf related items. The upper towel portion is divided from the lower towel portion by horizontal stitching across the width of the towel. Vertical edges of the upper towel portion are stitched together to form an open top ice and beverage holder pocket. The inside of the pocket includes an open top and an open bottom, water-proof liner. The liner is attached to opposite sides of the upper towel portion. The liner helps keep items stored therein cool and also prevent moisture from the ice from wetting the opposite sides of the upper towel portion. The open bottom of the liner allows moisture from the melted ice to migrate downwardly be gravity and wet the opposite sides of the lower towel portion.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: October 16, 2012
    Inventors: Derek Nakamura, Megian S. Nakamura
  • Patent number: 8286808
    Abstract: A vertical file folder rack adapted for mounting on a wall and holding various sizes and shapes of files, posters, drawings and like items. The vertical file folder rack includes a plurality of triangular-shaped wire frames mounted and equally spaced along a length of a rectangular shaped elongated wall base. The wall base is adapted for vertical attachment to a wall. A top portion of each wire frame is pivotally attached along the vertical length of the wall base. A center portion of the wire frame includes a pair of support arms, which extend downwardly and vertically. A lower portion of the wire frame includes a pair of outwardly extending file support arms with an upwardly extending arch-shaped file keeper disposed between the two support arms. A file is received on top of the support arms and held therein between the file keeper and the two support arms.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: October 16, 2012
    Inventor: Steve Setlik
  • Patent number: 8287407
    Abstract: An arrow broadhead adapted for attaching to an arrow shaft. The broadhead is adapted for moving from a retracted position during arrow flight to an extended position when contacting a target. The broadhead includes a pointed tip with tip base and a sliding shaft. A sliding shaft housing with a bore hole is used for receiving the shaft therein. A lower end of the shaft housing is adapted for receipt inside the open end of the arrow shaft. At least two cutting blades are pivotally attached to the tip base. Pivot arms are pivotally attached to the cutting blades and to the shaft housing. The pivot arms hold the cutting blades in a retracted position during arrow flight and expand the cutting blades upon target contact.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: October 16, 2012
    Inventor: Chris G. Sanford
  • Patent number: 8261823
    Abstract: A system and method for producing hydrocarbons in situ from an oil shale, fixed bed hydrocarbon formation disposed below a ground surface and having a naturally occurring, water-flow leached, higher permeability zone next to a lower permeability zone. The system includes at least one injection opening and at least one production opening in the naturally occurring, water-flow leached, higher permeability zone. A heated thermal-energy carrier fluid is injected into the injection opening and circulated horizontally through the higher permeability zone. The carrier fluid pyrolyzes the hydrocarbons in the lower and higher permeability zones in situ by heating the higher permeability zone and the adjacent lower permeability zone along an interface extending substantially between from the injection opening and the production opening and produces at least a portion of the mobilized hydrocarbons by flowing the carrier fluid with the pyrolyzed hydrocarbons through the production opening to the ground surface.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: September 11, 2012
    Inventors: Gilman A. Hill, Joseph A. Affholter
  • Patent number: 8235117
    Abstract: A method and system for producing hydrocarbons in situ from a heavy-oil and tar sand fixed bed, hydrocarbon deposit distributed substantially within a porous formation. The porous formation is disposed below a ground surface. The system includes at least one injection well drilled into the formation and spaced apart from at least one production well also drilled into the formation. A heated thermal-energy carrier fluid is circulated under pressure into the injection well, circulated under pressure through a hydraulic fracture in the formation. The hydraulic fracture is disposed between the injection well and the production well.
    Type: Grant
    Filed: August 26, 2006
    Date of Patent: August 7, 2012
    Inventors: Gilman A. Hill, Joseph A. Affholter
  • Patent number: 8215654
    Abstract: A drive system for a bicycle includes first and second drive sprockets, with respective one-way clutches. The drive sprockets are mounted on opposite ends of the bike's drive shaft. First and second idler pulleys are mounted on an upper pulley shaft. The upper pulley shaft mounts on the bike's frame above the rotary drive shaft and at a right angle thereto. A chain is mounted on the drive sprockets and the idler pulleys. A first pedal is attached to the chain between the first drive sprocket and the first idler pulley. A second pedal is attached to the chain between the second linear drive sprocket and the first linear driven idler pulley. First and second linear chain guides are mounted on opposite sides of the frame and disposed next to the chain for guiding portions of the chain and the pedals as they are moved up and down on the bicycle.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: July 10, 2012
    Inventor: Walter P. Leser
  • Patent number: 8168047
    Abstract: A HHO electrolysis cell mounted in a vehicle for creating hydrogen The hydrogen is mixed with a vehicle's fuel supply for increased fuel mileage. The electrolysis cell includes a cell housing for holding water. A plurality of positive electrode plates are mounted inside the cell housing and attached to a positive pole mounted on top of the cell housing. The positive pole is adapted for connection to a vehicle's electrical source. A plurality of negative electrode plates are mounted inside the housing and indexed in a spaced relationship between each of the positive electrode plates. The negative electrode plates are attached to a negative pole mounted on top of the cell housing. The negative pole is also adapted for connection to a vehicle's electrical source. The negative electrode plates are attached to a moveable plate rod mounted inside the cell housing. One end of the moveable rod is adapted for attachment to a linkage assembly connected to a vehicle's fuel system.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: May 1, 2012
    Inventor: Jerry Smith
  • Patent number: 8167938
    Abstract: A reading enhancement device for preventing and/or treating presbyopia of the eye. The enhancement device is sutured to an outer wall of the sclera for buckling and compressing a portion of the sclera and the ciliary body inwardly and perpendicular to the plane of the sclera and exerting a posterior compression force toward the vitreous humor in the rear of the eye. The enhancement device includes a compression body with a front of the body having semi-circular convex surface. The compression body made of a non-metallic, synthetic polymer. The convex surface is used for engaging, buckling and compressing both a portion of the sclera and the ciliary body of the eye. The compression body also includes an enlarged, rounded first and second end portions and an elongated center portion with the convex surface formed thereon. Also, the compression body includes a rear having an outwardly extending rib portion with a pair of grooves at opposite ends of the rib portion.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: May 1, 2012
    Assignee: Reading Enhancement Co.
    Inventor: Richard Damiano
  • Patent number: 8167688
    Abstract: A handheld, arrow broadhead cutting blade sharpener used for cutting blades on an arrow broadhead, knife blades and other cutting edges. The sharpener includes a hollow handle with a first end and a second end. Included inside the first end of the handle is a first coarse stone holder with a first angled groove therein for holding a first coarse sharpening stone. The first end also includes a second coarse stone holder having a second coarse stone holder with a second angled groove therein for holding a second coarse sharpening stone. The ends of the first and second fine sharpening stones extend outwardly from the first end of the handle and are held in a ā€œVā€ shaped configuration adapted for receiving an edge of a cutting blade there between. The second end of the handle includes a pair of fine sharpening stones held in a ā€œVā€ shaped configuration for providing a finely sharpened edge on the cutting blade.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: May 1, 2012
    Inventor: Robert Lee Adler
  • Patent number: 8152650
    Abstract: An adjustable golf swing practice device adapted for engaging a knee or calf muscle of a back leg of a golfer and preventing body sway during a golf club back swing. The practice device includes an adjustable leg brace for engaging the outside of the knee or calf muscle to help encourage and maintain knee flex and prevent the straightening or locking of the back leg during a club back swing. The leg brace is attached to an adjustable leg brace pole having a telescoping rod and an outer tube for adjusting the length of the pole for different heights of golfers. The outer tube is pivotally mounted on a leg brace pole housing with housing base. The housing base includes a horizontal shoe extension, which is used for receiving the golfer's shoe thereon and holding the practice device in place during practice.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: April 10, 2012
    Inventor: Gary Brandt
  • Patent number: 8117971
    Abstract: A table cloth and trash bag combination having a table cloth upper portion dimensioned to be laid on top of a picnic table or other types of outdoor and indoor tables and made of thin sheet paper, plastic and like material. The upper portion includes decorative designs of toys, animals, birthday cakes, logos, and like festive items for birthdays, anniversary, and other party events. On opposite corners of the upper portion is an outwardly extending first portion of pull strings. A second portion of the pull strings is received through seams disposed along sides of a length and a width of the table cloth upper portion. In the center of the table cloth upper portion and parallel to the length is an elongated opening having sides attached to a top of a folded trash bag lower portion. The opening provides access into the folded trash bag lower portion. The lower portion is made of thin sheet plastic for receiving trash items placed on top of the upper portion and picnic table.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: February 21, 2012
    Inventors: Yettie LaVonne Cotton, M. A. Yah Cotton
  • Patent number: 8104327
    Abstract: A leak detection method for determining changes in helium concentration over time in an interstitial space between a primary vessel and a secondary vessel. The primary vessel is disposed inside a secondary vessel and charged with helium. An expected concentration of the helium in the interstitial space resulting from permeation of the primary vessel material is calculated and accounted for to determine a leak in the primary vessel. In another embodiment of the leak detection method, air flow is circulated in the interstitial space between the primary and second vessels. An abrupt change in measured concentrations can be used to determine the approximate location of the leak in the primary vessel.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: January 31, 2012
    Assignee: C.G.R.S. Inc.
    Inventors: Joby L. Adams, Eric L. Hick
  • Patent number: 8105187
    Abstract: An arrow broadhead adapted for attaching to an open end of a hollow arrow shaft. The broadhead is adapted for moving from a retracted position during arrow flight to an extended and fully-locked position when contacting a target. The broadhead includes a pointed tip with tip base and a sliding shaft. A sliding shaft housing with a bore hole is used for receiving the sliding shaft therein. A lower end of the sliding shaft housing is adapted for receipt inside the open end of the hollow arrow shaft. At least two cutting blades are pivotally attached at one end to the tip base. Pivot arms are pivotally attached to an inside edge of the cutting blades and to the sliding shaft housing. The pivot arms hold the cutting blades in a retracted position during arrow flight and expand the cutting blades outwardly upon target contact.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: January 31, 2012
    Inventor: Chris G. Sanford
  • Patent number: 8096077
    Abstract: A rifle recoil absorbing strap assembly for absorbing rifle recoil from a rifle, the strap assembly preventing the bruising of a shoulder when firing the rifle and without having to permanently mount the strap assembly on a target shooting bench, a table or a horizontal support member. The strap assembly includes an elongated, flexible, horizontal first strap member with adjustable and releasable fastener. The adjustable and releasable fastener is used for securing together a first end and a second end of the first strap member. Also, the strap assembly includes a flexible, vertical second strap member with a first end and an opposite second end. The first and second end of the second strap member are adapted for receipt around a front portion of the rifle and secured thereto for preventing upward movement of the rifle when firing. Further, the strap assembly includes a rifle butt cradle adapted for receiving and securing a rifle butt of the rifle therein.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: January 17, 2012
    Inventor: Clayton R. Caywood
  • Patent number: 8091626
    Abstract: A downhole combustion unit for creating a high temperature, high pressure, thermal energy carrier fluid (TECF) inside a drill hole, which can be injected into a hydrocarbon, permeable zone for mining and producing hydrocarbons therefrom. The combustion unit includes an outer well-bore casing cemented in place in the drill hole. An inner well-bore casing, with injection holes in a lower portion thereof is used as a combustion chamber. The inner casing is suspended inside the outer casing. The configuration of the concentric outer and inner casings provide an outer annulus therebetween for receiving water from a ground surface and circulated downwardly under pressure. Compressed air and steam are circulated down the inside of the inner casing. A gas fuel tubing is disposed inside the inner casing for discharging the fuel into the combustion chamber.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: January 10, 2012
    Inventors: Gilman A. Hill, Joseph A. Affholter
  • Patent number: 8065944
    Abstract: A portable cutter used for cutting different widths of thin sheet material. The portable cutter includes a right angle measurement bar with scale adapted for receipt against a front side of an open top storage box. The storage box is used for holding a large roll of thin sheet material therein. At least one cutting blade tool is adjustably mounted along a length of the measurement bar. The cutting blade tool includes a cutting blade disposed between a horizontal upper blade guide arm and a horizontal lower blade guide arm. Attached to a portion of the lower blade guide arm is a magnet holder with magnet used for releasable attachment to the measurement bar.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: November 29, 2011
    Inventor: Clay Speas, Jr.
  • Patent number: 8033920
    Abstract: A flexible, dual ball joint assembly used for increasing the wear life of a mud motor. The ball joint assembly includes an drive shaft with a drive shaft hollow ball joint. An outer circumference of the hollow ball joint includes a plurality of equally spaced apart drive shaft ball bearings. An inner circumference, inside the hollow ball joint, includes a plurality of equally spaced apart drive shaft grooves. Also, the ball joint assembly includes an annular shaped torque coupler with a torque coupler ball joint. An outer circumference of the torque coupler ball joint includes a plurality of equally spaced apart torque coupler ball bearings. The torque coupler ball bearings are received in the drive shaft grooves for providing lateral movement between the drive shaft and the torque coupler. An outer circumference of the torque coupler next to the torque coupler ball joint includes a plurality of torque coupler lobes equally spaced apart therearound.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: October 11, 2011
    Inventor: Todd Benson
  • Patent number: 8007382
    Abstract: An expandable arrow broadhead used for releasable attachment to one end of a hollow arrow shaft. The arrow broadhead includes a pair of two-piece, folding cutting blades pivotally attached to a side of sliding shaft housing and a tip base. The tip base is part of a sliding shaft received in a collar bore in the sliding shaft housing. The cutting blades include a front cutting blade pinned to a rear pivot arm. The front cutting blade includes an outer cutting edge and an inner edge. The cutting blades are held in a retracted position during arrow flight using a flexible band received around a portion of the cutting blades or a coil spring received around the sliding shaft and mounted in the collar bore. Upon target contact, the folding cutting blades are extended outwardly from the side of the sliding shaft housing for increased penetration in the target.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: August 30, 2011
    Inventor: Chris G. Sanford
  • Patent number: D659200
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: May 8, 2012
    Inventor: Christopher J. Wicken