1
Malcolm T McCants: Vis-breaking heavy crude oils for pumpability. George H Dunsmuir, November 28, 1989: US04883582 (107 worldwide citation)

Crude oils are normally so viscous that they cannot be pumped through pipelines without periodic heating. The usual practice is to pump the oil from one heat station to another, with part of the crude oil being used to generate heat. This problem is solved by reducing the viscosity of the crude oil. ...


2
Sharon Krushel: Diaper. Harold H Dutton Jr, George H Dunsmuir, September 27, 1988: US04773906 (80 worldwide citation)

In a reusable diaper, it is known to sew layered absorbent material together and apply a variable width fastening system to make an absorbent diaper which does not require folding or pinning. A structurally simple, multi-layered diaper includes a generally rectangular absorbent panel with one flarin ...


3
John E Filby: Azeotropic dehydration process for treating bituminous froth. Petro Canada Exploration, William R Hinds, George H Dunsmuir, April 30, 1985: US04514305 (65 worldwide citation)

Bituminous froths, typically obtained from the known Hot Water Method of extraction treatment of oil sands, are processed to remove water and part of the coarse mineral solids contained in the froth. In the process, the froth feed stock from the Hot Water Method treatment is mixed with a naphtha dil ...


4
John B Hambley: Filter underdrain apparatus with partitioned distributor conduits. William R Hinds, George H Dunsmuir, May 28, 1991: US05019259 (55 worldwide citation)

A filter underdrain apparatus comprises plate means forming a plurality of horizontal distributor conduits, the conduits being in juxtaposed, laterally-spaced relationship and constructed and arranged to defined alternating conduits and troughs of a filter underdrain. At least some of the horizontal ...


5
Paul B Lee: Downhole valve for use when drilling an oil or gas well. George H Dunsmuir, William R Hinds, December 26, 1989: US04889199 (51 worldwide citation)

A downhole drilling device utilizing a spring-loaded sleeve within the casing for controlling circulation of fluid material. A plastic, i.e., deformable ball is used to block a flow opening in the sleeve for positioning the sleeve and aligning flow ports. Subsequently, the ball is deformed and the d ...


6
Norman Law: Childs collapsible car seat. George H Dunsmuir, July 24, 1990: US04943112 (42 worldwide citation)

Because of the complicated structure and expense, collapsible seats for use by children in automobiles are a rarity. A simple device of this type includes a pair of cushioned panels hingedly interconnected end-to-end which normally define a portion of a conventional backrest in an automobile, the pa ...


7
H Johannes Vos, James D VanWert: Digital control system. William R Hinds, George H Dunsmuir, December 8, 1981: US04304989 (40 worldwide citation)

A solid state, digital control system is disclosed for individually timing and sequentially operating a number of electrically controllable devices such as remote control valves and pumps for irrigation systems. In one embodiment, the digital control system comprises clock circuits (10) which produc ...


8
Don J Miller: Heat transfer device. William R Hinds, George H Dunsmuir, September 13, 1983: US04403597 (36 worldwide citation)

A heat transfer device for use in a gas barbecue includes a solid cast iron plate, which is mounted in the barbecue between the burner and the food holding grate, i.e., in the position normally occupied by the lava bed. The plate has an irregular top surface resembling a lava bed and a plurality of ...


9
Rene Charron: Protective outer garment for divers. George H Dunsmuir, January 27, 1987: US04638509 (34 worldwide citation)

Protective trousers for wearing over the lower portion of a dry or wet diving suit include a pair of panels joined at the crotch area and defining leg, hip and waist encircling elements. Clips and straps are provided for connecting the open side edges of the trousers, and for securing the bottom end ...


10
Jim Shaner: Liquid fertilizer distributor. George H Dunsmuir, August 18, 1981: US04284243 (31 worldwide citation)

A distributor for viscous liquid fertilizer includes a casing with a flat top and frusto-conical bottom end defining a chamber the lower end of which is divided into compartments by radially extending partitions; a hollow cone spray nozzle in the top end of the casing for spraying fertilizer into th ...