Patents Represented by Attorney Norman P. Friederichs
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Patent number: 7043883Abstract: Disclosed is a door jamb having a pair of tubular side jambs and a tubular head jamb, the side jambs and the head jamb each have an outer low maintenance element, an inner structural element, and an intermediate element for receiving a portion of each of the outer and inner elements to secure such outer and inner elements together in selected positions to provide a desired depth of the door jamb.Type: GrantFiled: August 23, 1999Date of Patent: May 16, 2006Inventors: Carl A. Cederberg, Cory R. Cederberg, Cully T. Cederberg
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Patent number: 6755282Abstract: A materials support including a pair of leg supports and a horizontal support, the leg supports including a tubular member adapted to snugly receive a portion of said horizontal support and a pair of laterally extending legs, the legs being integral with the tubular member.Type: GrantFiled: July 26, 2000Date of Patent: June 29, 2004Inventor: Christopher Neal Herold
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Patent number: 6715730Abstract: A security system including mechanism for detecting intrusion into a building such as a home, mechanism for activating the detecting mechanism, mechanism for turning off the supply of water to the outdoor water outlet, the activating mechanism including mechanism for controlling the shutting off mechanism to prevent supply of water to the outlet when the detecting mechanism has been activated.Type: GrantFiled: December 27, 2000Date of Patent: April 6, 2004
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Patent number: 6629378Abstract: A device for reading x-rays including mechanism for transporting a plurality of x-rays to and from a x-ray reading station; the transporting mechanism including a web and mechanism for securing a plurality of x-ray films to the web; the plurality of x-ray films may be spaced one from another along the web; the device including mechanism for controlling the movement of the web to sequentially transport the x-ray films to the reading station; mechanism for sensing the web and overlying x-ray film to identify the location of each x-ray film; sensing mechanism being disposed upstream of the x-ray reading station; mechanism for activating light sources behind the x-ray film and avoiding activating light sources behind the web portions not having overlying x-ray film; light activating mechanism disposed at the x-ray reading station whereby light is passed through said x-ray film and light is not passed through the web not having overlying x-ray film.Type: GrantFiled: March 27, 2001Date of Patent: October 7, 2003Inventor: Gregory Gustafson
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Patent number: 6513853Abstract: A windshield cover having a first panel adapted to overlie the windshield and the cowl of an automobile, a second and third panel adapted to overlie at least the upper portion of the front doors of the automobile, fourth and fifth panels adapted to lie between the front doors and the adjacent cab portion of the automobile when the front doors are in a closed position thereby preventing theft of the windshield cover, the windshield cover being adapted to protect the windshield of the automobile.Type: GrantFiled: January 22, 2001Date of Patent: February 4, 2003Inventor: Bryan G. Langley
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Patent number: 6279167Abstract: An article of apparel for a human head in the nature of a cap having a button permanently attached thereto with a three-dimensional plush animal adapted to be removably attached to the cap. The three-dimensional plush animal having a strip of cloth attached to the belly portion of the three-dimensional plush animal. The strip of cloth has an opening adapted to snugly receive the button. The button is removably inserted through the opening thereby removably attaching the three-dimensional plush animal to the cap.Type: GrantFiled: July 28, 1999Date of Patent: August 28, 2001Inventors: Ben Johnson, Laurie Johnson
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Patent number: 5282880Abstract: Removing contaminants from a contaminated ore through volatilization in a low pressure environment, subjecting the ore to a plasma and a reactive gas in a low pressure environment to form a metallic salt, volatilizing the salt and collecting the salt via condensation.Type: GrantFiled: September 15, 1992Date of Patent: February 1, 1994Inventor: Larry K. Olson
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Patent number: 4469525Abstract: The present invention relates to a membrane remover/etchant solution including an organic solvent, a strong ionizable acid, a weak acid and an acid stable surfactant. The present invention further includes a method for removing a membrane and etching a concrete surface in which the membrane remover/etchant solution is in an organic solvent system and is applied to the concrete in an inactive acid form and then water is applied to activate the acid. The resulting materials are then picked up and the surface is rinsed with water.Type: GrantFiled: January 19, 1983Date of Patent: September 4, 1984Assignee: Tennant CompanyInventor: Paul D. Dodge
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Patent number: 4355435Abstract: The present invention provides surface maintenance equipment, such as for sweeping lawns, which includes mechanism for preventing clogging of ducts leading to the fan and/or the hopper.Type: GrantFiled: September 12, 1980Date of Patent: October 26, 1982Assignee: Tennant CompanyInventors: Paul W. Kimzey, Daniel J. Super
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Patent number: 4349864Abstract: A lighted plant stand (1) for holding a houseplant of the type which hangs or vines downwardly from the plant pot or extends outwardly therefrom. A base (2) adapted for placement on a floor, table or other supporting surface is provided with an upstanding central support (65) or a central cylinder (19), which may be provided with a reflective surface. A pot-like plant container (3) or flat plant holder (101) is spaced upwardly of the base (2). An outside cylinder member (4) is mounted on the outer edge of the base (2) and the plant container (3) rests on the upper end of the outside cylinder member (4). A pair of elongated fluorescent lights (13) are mounted between the base (2) and the plant container (3) between the outside cylinder member (4). The central cylinder (19) and the outside cylinder member (4) are formed with apertures for ventilating the lights (13). A circular fluorescent light (41) may be alternatively mounted in the stand (1), and the device may also be formed in a polygonal configuration.Type: GrantFiled: March 2, 1981Date of Patent: September 14, 1982Inventor: Phillip H. Smith
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Patent number: 4348783Abstract: A scrubbing machine is described which may be operated either in a single cycle scrubbing mode or in a recirculating scrubbing mode. The scrubbing machine includes a body structure which is supported on a plurality of wheels. The scrubber has a pair of tanks one of which is a collector tank and the other of which is a solution feeding tank. A conduit and a pump are provided for moving the solution from the collector tank to the feeding tank. The collector tank may include a filter structure including a flexible conduit and a filtering element.Type: GrantFiled: November 10, 1980Date of Patent: September 14, 1982Assignee: Tennant CompanyInventors: Albert S. Swanson, Robert A. Geyer
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Patent number: 4346494Abstract: A brush structure is provided including a laminated core of plastic sheet and fiber sheet. A laminated tube of plastic sheet and fiber sheet is also provided in the present invention.Type: GrantFiled: February 17, 1981Date of Patent: August 31, 1982Assignee: Tennant CompanyInventors: Ralph C. Peabody, Bertil J. Sundberg
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Patent number: 4345353Abstract: A sweeping machine is disclosed including a planar pleated filter and a striking mechanism for removing collected dust from the pleated filter. The striking mechanism includes an elongated strap with resilient pad which overlies the pleated filter. A rotatably driven eccentric weight drives the strap and pad to strike the upper surface of the pleated filter.An industrial filter device is disclosed including a planar pleated filter and a striking mechanism for removing collected dust from the pleated filter. The striking mechanism includes an elongated strap which overlies the pleated filter. A rotatably driven eccentric weight drives the strap to strike the upper surface of the pleated filter.Type: GrantFiled: November 24, 1980Date of Patent: August 24, 1982Assignee: Tennant CompanyInventor: George L. Sommerfeld
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Patent number: 4340230Abstract: A golf club iron is provided including a variable weighting system. The weights are disposed in selected openings in a matrix. A cover secures the weights in place. The cover is in a protected position to the rear of the club head.Type: GrantFiled: February 6, 1981Date of Patent: July 20, 1982Inventor: Roy A. Churchward
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Patent number: 4334335Abstract: A scrubbing device is provided including a body which is supported on a plurality of wheels which are driven by a hydraulic pump. The scrubbing machine has a squeegee which is hydraulically raised and lowered. The machine is provided with a sensing device adjacent the hydraulic drive pump which senses the flow of the hydraulic fluid and actuates valving to raise the squeegee upon reverse movement of the scrubber and lower the squeegee upon forward movement of the scrubber.Type: GrantFiled: September 3, 1980Date of Patent: June 15, 1982Assignee: Tennant CompanyInventors: Neil F. Brown, Keith N. Krier, Ranjan K. Nirgude
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Patent number: 4330492Abstract: An improved carburetor (10) is disclosed and claimed by this application. The carburetor (10) includes an updraft section (16), a crossdraft section (18), and a downdraft section (20). The updraft section (16) includes a mixing chamber (22) in which fuel and air are mixed. This mixture formed therein passes into a plenum (84) of the crossdraft section (18) through which a plurality of ducts (88) extend. A hot fluid passes through these ducts (88) to heat the mixture passing through the plenum (84). The mixture, thereafter, passes through a plenum outlet (86) into another plenum (104) of the downdraft section (20) and to an intake manifold (12) for distributing the mixture to the cylinders of the engine.Type: GrantFiled: November 3, 1980Date of Patent: May 18, 1982Inventor: Russell R. Mohr
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Patent number: 4320556Abstract: The present invention provides surface maintenance equipment, such as for sweeping lawns, such equipment including a skirt structure for the debris pickup housing.Type: GrantFiled: September 12, 1980Date of Patent: March 23, 1982Assignee: Tennant CompanyInventors: Paul W. Kimzey, John L. Hanna
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Patent number: 4318514Abstract: A machine for applying and retracting a protective covering to agricultural plants is disclosed. The implement (10) is supportively attached by forward and rearward attachment mechanisms (12, 14) to a tractor (16) and movably supported additionally by a coaster wheel (18) laterally spaced from the tractor (16). Vertically-oriented supports and rearward attachment mechanisms (12, 14) and front attachment to wheel (18) to support a horizontally-oriented, substantially-rectangular frame (26). A rotatable shaft mechanism (28) attached to a universal joint (108) is supported at the ends by shaft supports (30, 32) which extend upwardly from the rearward portion of the frame (26). A shaft mechanism (28) is driven by a hydraulic motor (34) which receives controllable power from tractor (16).Type: GrantFiled: February 25, 1980Date of Patent: March 9, 1982Inventor: Wallace Weberg
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Patent number: 4310944Abstract: A powered sweeping machine is disclosed, particularly suitable for efficiently removing light and heavy weight litter from surfaces such as parking lots, warehouse floors and the like. The machine includes a main frame carrying a hopper and a powered brush. The brush operates through an opening in the lower side of a brush housing. The hopper is separated into a debris receiving compartment and a filter compartment. An air fan and an associated duct recirculates air from the far end of the debris compartment to a zone adjacent the brush. This nonfiltered air is discharged into the brush housing and again moved through the debris compartment to aid in moving debris to the far end of the debris compartment. A fan is provided for withdrawing a portion of the air from the filter compartment and discharging the air to the ambient atmosphere.Type: GrantFiled: April 7, 1980Date of Patent: January 19, 1982Assignee: Tennant CompanyInventors: Harley E. Kroll, Donald L. Thomsen
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Patent number: D263021Type: GrantFiled: January 31, 1978Date of Patent: February 16, 1982Assignee: Burlington Norther, Inc.Inventor: Frederick R. Siegfried