Patents Represented by Attorney, Agent or Law Firm Olson and Olson
  • Patent number: 4838236
    Abstract: The draw length and pull weight of a compound archery bow may be varied over a desired range by changing the positions of anchoring the ends of the bow string and power cable on the cam elements at the outer ends of the bow limbs. Each cam element is provided with a plurality of openings arranged in a desired pattern, and an anchor member is secured removably at any one of the openings by a screw extended through the opening and threaded into a tapped opening in the anchor member. A groove in the outer circumference of each anchor member removably recieves a looped end of the bow string or power cable.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: June 13, 1989
    Inventor: Donald S. Kudlacek
  • Patent number: 4825778
    Abstract: A rail car is adjustable in length to accommodate the mounting thereon of cargo containers of various lengths and widths, such as the presently employed 20 foot, 40 foot, 45 foot and 48 foot lengths and 96 and 102 inch widths. Length adjustment is effected either by forming the rail car frame in two telescopic end sections, or by providing an extensible coupling tongue on one or both ends of the rail car frame. The rail car also may incorporate a collapsible fifth wheel connector for the king pin of a cargo container trailer chassis to accommodate transport of a trailer-mounted cargo container. The rail car also includes structure by which it may be manipulated by external lifting equipment to stack a plurality of the rail cars one atop another, either for stationary storage in a rail yard or for transport in a train to another location.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: May 2, 1989
    Assignees: Scott S. Corbett, Clinton B. Clark
    Inventor: Joseph L. Riley
  • Patent number: 4815290
    Abstract: A heat recovery system utilizing the principle of the Stirling engine includes a gas-containing chamber communicating through control valves alternately with hot and cool gas heat exchangers supplied with waste or other source heat fluid and coolant fluid, respectively, and a blower functions to circulate gas in the chamber alternately through the hot and cool gas heat exchangers and thus alternately to increase and decrease the gas pressure in the chamber. This alternate changing of gas pressure is utilized to operate a work-performing device. In one embodiment, a single chamber contains a piston reciprocative therein by said pressure change. In another embodiment, each of a pair of chambers is coupled through a blower selectively with a hot gas heat exchanger and a cool gas heat exchanger.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: March 28, 1989
    Inventor: Lyle A. Dunstan
  • Patent number: 4811530
    Abstract: A portable platform is formed of a plurality of elongated floor support members interconnected longitudinally and spaced apart laterally, the support members having a plurality of longitudinally spaced cross members, the confronting cross members being secured in alignment by interengaging coupling members and the laterally spaced floor support members being secured against lateral displacement by a plurality of elongated locking members interengaging adjacent pairs of support members. A plurality of elongated floor members are supported on the foregoing assembly and are secured together releasably along their longitudinal edges.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: March 14, 1989
    Assignee: J V Industries, Inc.
    Inventor: Jon V. Eyerly
  • Patent number: 4792084
    Abstract: A paperboard carton is formed from a single blank of generally rectangular shape which is cut and scored along lines which provide corner panels at the four corners and middle panels separated from the corner panels along one pair of opposite sides of the blank by two laterally spaced pairs of two laterally spaced cut lines connected at their inner ends by an angularly directed cut line, and along the other pair of opposite sides of the blank by two laterally spaced pairs of two laterally spaced score lines which define between them an angle corner panel. The inner ends of the middle panels are defined by score lines which, together with the angle cut lines, define the peripheral margin of a central bottom panel. The middle panels form the ends and sides of the carton.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: December 20, 1988
    Assignee: Longview Fibre Company
    Inventor: Dale M. Dreeszen
  • Patent number: 4788777
    Abstract: A sticker for spacing wood products apart vertically in a dry kiln is formed as an elongated, hollow, internally reinforced extruded rectangular profile of synthetic resin reinforced with glass fiber. The internal reinforcement is provided by one or more reinforcing webs that extend between the top and bottom peripheral walls of the rectangular profile. The preferred extrusion is made of a mixture of polycarbonate resin, polysulfone resin and 20-40% by weight glass fiber. The peripheral wall thickness of the rectangular profile ranges between about 0.0625 inch and 0.125 inch. The external width of the rectangular profile ranges between about 1 inch and 3 inches, preferably about 1.5 inches. The external height of the rectangular profile ranges between about 0.25 inch and 1.25 inches, preferably between about 0.625 inch and 1 inch. The length of the sticker ranges between about 4 feet and 9 feet.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: December 6, 1988
    Inventor: Jeffrey E. Davis
  • Patent number: 4786040
    Abstract: A vertical stack of envelopes is produced adjacent the infeed end of a printing press, for removal one at a time by envelope infeed mechanism of the printing press, the stack being maintained by adding envelopes one at a time to the bottom end of the stack when the height of the stack or number of envelopes in the stack is reduced to a predetermined magnitude, the rear end of the stack being elevated to facilitate insertion of added envelopes to the bottom of the stack. The envelopes are removed one at a time by operation of the envelope infeed mechanism of the printing press. The addition of envelopes to the stack is stopped when the height of the stack or number of envelopes in the stack is increased to a predetermined magnitude.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: November 22, 1988
    Inventor: Elmer R. Thomsen
  • Patent number: 4782914
    Abstract: A conventional construction scaffolding comprises sections formed of a pair of laterally spaced apart, vertically extending upright members secured in proper position by a cross brace assembly. An adjustable safety guard rail assembly therefor comprises a vertically spaced apart pair of bars pivotally and permanently attached to the cross brace members, the upper guard bar being pivotally connected intermediate its opposite terminal ends to a cross brace member and the lower guard bar being pivotally connected at one of its terminal ends to a cross brace member, the opposite end of the lower bar being connected slidably to the other cross brace member, to slide freely on the latter for accommodating variations in the spacing between the upright members of the scaffolding.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: November 8, 1988
    Inventor: Donald E. Nail
  • Patent number: 4771955
    Abstract: A pepper mill is provided with an end closure for releasably closing the outfeed opening of the pepper mill against unintentional discharge of ground pepper therefrom. The closure apparatus of this invention is configured as a mechanically operated shield, either integral with a removably attachable to the outfeed end of the pepper mill, the shield serving to selectively permit or prevent passage of ground pepper out of the mill.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: September 20, 1988
    Inventor: John K. Paulson
  • Patent number: 4771137
    Abstract: An electric fence wire insulator is formed as an integral, one-piece body of non-conductive synthetic resin and includes a transverse spark shield from which extends in one direction a pair of laterally spaced main legs terminating in a pair of laterally spaced feet configured to abut the arcuate or flat surface of a wooden or metal fence post. Openings through the feet receive nails or screws by which to secure the feet to the fence post. Projecting in the opposite direction from the spark shield are five laterally spaced fingers provided with inwardly facing arcuate grooves which are aligned transversely for the reception of an electric fence wire. Laterally spaced secondary legs inwardly of the main legs are shaped to provide two pairs of split circular retainers of different diameters for the frictional retention of different size rod type fence posts.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: September 13, 1988
    Inventor: Donald G. Thompson
  • Patent number: 4757614
    Abstract: An archery bow sight includes a plate arranged for removable attachment to the handle portion of an archery bow and supporting a longitudinally extendable mounting arm which mounts at its forward end a horizontally extending support to which a vertically elongated sight bar is mounted for horizontal windage adjustment. The sight bar mounts a plurality of sight pin blocks by means of interconnecting dovetail components, the blocks extending transversely across the sight bar for adjustment along the length of the sight bar. An elongated threaded sight pin member extends adjustably through a threaded bore in each block in the transverse direction of the sight bar, and a slot intercepts the dovetail component and sight pin bore in the block. A clamp screw in the block extends across the slot and operates upon rotation in one direction to clamp the block to the sight bar and the sight pin to the block.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: July 19, 1988
    Inventor: Donald S. Kudlacek
  • Patent number: 4745801
    Abstract: A multi-level groundwater sampling system utilizes a multiplicity of small diameter flexible sampling tubes terminating at their lower ends at different depths in a single small diameter drill hole, the lower end section of each sampling tube being perforated and loosely wrapped with fine mesh flexible cloth screen secured to the perforated tube section by longitudinally spaced ties, so that the cloth may flex inward and outward to assist in removing potential screen-plugging silt or other finely particulate solids. The upper ends of the sampling tubes are available for connection to a vacuum pump for collection of groundwater samples. The upper ends of the sampling tubes also may be coupled to a manifold connected to a vacuum pump for measuring groundwater pressures.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: May 24, 1988
    Inventor: James E. Luzier
  • Patent number: PP6182
    Abstract: A new and distinctive cultivar of begonia plant bearing medium sized, heavily filled flowers of rose color contrasting with dark medium green foliage. The plant is characterized by a vigorous growth habit, and produces a very floriferous raceme display, which is continuous for long periods of time.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: May 17, 1988
    Assignee: L. Daehnfeldt A/S
    Inventor: Soeren Hvid
  • Patent number: PP6185
    Abstract: A new and distinctive cultivar of begonia plant named Mona, characterized by its vigorous, compact growth habit; bright "light delicate rose" tepals that maintain color even under high light conditions; floriferous habit, and by its excellent keeping qualities.
    Type: Grant
    Filed: June 6, 1986
    Date of Patent: May 24, 1988
    Assignee: L. Daehnfeldt A/S
    Inventor: Soeren Hvid
  • Patent number: PP6186
    Abstract: A new and distinctive cultivar of begonia plant named Lisa characterized in that it is a rather high, medium broad and medium branching mutation of the cultivar Pia Elise with large double light red flowers which do not significantly fade under abnormal conditions, the flower color pleasantly contrasting with dark green foliage, a vigorous growth habit, and by its ease of manipulation for year around flower production especially well suited for larger containers and hanging baskets for interior decoration.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: May 24, 1988
    Assignee: L. Daehnfeldt A/S
    Inventor: Soeren Hvid
  • Patent number: D297965
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: October 4, 1988
    Inventor: Ronny O. Luse
  • Patent number: D298098
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: October 18, 1988
    Inventor: Wilbur G. Craig, III
  • Patent number: PP6377
    Abstract: A new and distinctive cultivar of begonia plant particularly characterized by its vigorous, compact growth habit, pure white tepals that maintain color even under high light conditions, its floriferous display, and by its excellent keeping qualities.
    Type: Grant
    Filed: June 6, 1986
    Date of Patent: November 8, 1988
    Assignee: L. Daehnfeldt A/S
    Inventor: Soeren Hvid
  • Patent number: D299178
    Type: Grant
    Filed: August 7, 1986
    Date of Patent: December 27, 1988
    Assignee: Oil Caddy, Inc.
    Inventor: Larry E. Smith
  • Patent number: D301860
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: June 27, 1989
    Inventor: Glenn O. Severson