Patents Issued in May 17, 1994
  • Patent number: D347091
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: May 17, 1994
    Inventor: Eric D. Cardwell
  • Patent number: D347092
    Type: Grant
    Filed: June 9, 1992
    Date of Patent: May 17, 1994
    Inventor: Randolph J. Ravel
  • Patent number: D347093
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: May 17, 1994
    Inventor: Thomas G. Myers
  • Patent number: D347094
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: May 17, 1994
    Inventor: Harry L. Christensen, Jr.
  • Patent number: D347095
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: May 17, 1994
    Assignee: Rehrig Pacific Company
    Inventors: William P. Apps, James B. Rehrig
  • Patent number: D347096
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: May 17, 1994
    Inventor: A. B. Burton
  • Patent number: D347097
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: May 17, 1994
    Assignee: Sava Kranj Industrija Gumijevih
    Inventors: Andrej Hude, Marko Benedik
  • Patent number: D347098
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: May 17, 1994
    Inventors: Kathy A. Hummel, Diane C. Wirtjes, Donald L. Wirtjes
  • Patent number: PP8729
    Abstract: A new and distinct strawberry variety which originated from seed produced by a hand-pollinated cross between FL 80-456 and Pajaro, is provided. The new strawberry is distinguished by its earliness of production, its cupped leaves, its reponse to pests, and its sweet fruit.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: May 17, 1994
    Assignee: Florida Foundation Seed Producers, Inc.
    Inventor: Charles M. Howard, deceased
  • Patent number: PP8730
    Abstract: A new and distinct hybrid elm selection, believed to be from a genetic background of Ulmus americana.times.U. pumila, which is characterized by extremely high vigor as compared to other elm trees of the same age. This tree is further characterized by having leaves which are larger, thicker, highly doubly serrate, and more symmetrical than those of comparison trees of comparison or parental species. The leaves of this tree have midrib and veins which are inserted below the top surface and protrude from the bottom surfaces of leaves, and are larger than those of other species.It seems the extra thickness of the upper surface of the leaves of this tree with the larger vein structure beneath causes the leaf surface to become curved in a retrorse curve, with the center portion of the blade being higher, and the outer portion curved slightly downward. The blade turned with the lower side up becomes dish shaped and will hold water in the center.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: May 17, 1994
    Inventor: Raymond H. Smith
  • Patent number: PP8731
    Abstract: A distinct cultivar of aster plant named Pink Master, characterized by its large inflorescences, large number of ray and disc florets, non-fading inflorescence color, large number of harvestable stems per plant, strong and straight stems, and good postharvest keeping quality.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: May 17, 1994
    Assignee: G. B. H. Bartels
    Inventor: G. B. H. Bartels
  • Patent number: PP8732
    Abstract: A new and distinctive spray carnation cultivar particularly distinguished by its profuse, intermittent production of small sized white flowers borne in a cluster of five petals on strong, upright stems.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: May 17, 1994
    Assignee: Van Staaveren B.V.
    Inventor: Jacob van Andel
  • Patent number: PP8733
    Abstract: Poinsettia "4-91" is a new cultivar, distinguished by blushed pink flower bracts, and self-branching characteristics. "4-91" is a color sport of the bicolored poinsettia "135" (U.S. Plant Pat. No. 7,234) with the same early flowering response and cultural requirements. The new plant produces a very desirable branched flowering pot plant.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: May 17, 1994
    Assignee: Paul Ecke Ranch, Inc.
    Inventor: Franz Fruehwirth
  • Patent number: PP8734
    Abstract: Poinsettia "H-29" is a new cultivar, distinguished by peach pink bracts and unique flower bract formation and presentation. "H-29" is a seedling from cross pollination. The new plant produces a very desirable flowering pot plant. The post-production foliage and bract retention is excellent even under low light intensities in the consumer's home.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: May 17, 1994
    Assignee: Paul Ecke Ranch, Inc.
    Inventor: Franz Fruehwirth
  • Patent number: PP8735
    Abstract: Gutbier Marlene is a new cultivar distinguished by bright brick red bracts, self branching and compact growth habit. The new plant is tolerant to temperatures down to 10.degree. C. showing intensified bract color under cool conditions. Bract retention is long, typically lasting for several months.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: May 17, 1994
    Assignee: Paul Ecke Ranch, Inc.
    Inventor: Gregor Gutbier
  • Patent number: PP8736
    Abstract: A new and distinctive alstroemeria cultivar particularly distinguished by its medium-size flowers having generally an ivory-white flower color, leaves and internodes being shorter than common varieties, pedicels having a horizontal setting on the main stem and high productivity.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: May 17, 1994
    Assignee: Koninklijke van Zanten
    Inventor: G. E. Veldhuyzen van Zanten
  • Patent number: PP8737
    Abstract: A new and distinctive Alstroemeria cultivar particularly distinguished by its profuse and recurrent production of very large sized flowers having six petals arranged in two concentric circles of three petals per flower; The new cultivar having magenta rose coloration for the body and phlox pink coloration for the base of its outer petals. The inside lateral petal having magenta rose and dresden yellow coloration for its body and phlox pink coloration for its base. The inner lateral petals also having numerous beetroot purple stripes and many chrysanthemum crimson spots. The inner median petal having a magenta rose body and a phlox pink base. The inner median petal having many beetroot stipes. These flowers being carried on erect stems branching from a tall main stem forming a strong upright bush.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: May 17, 1994
    Assignee: Van Staaveren B.V.
    Inventor: Jacob van Andel
  • Patent number: PP8738
    Abstract: A new and distinctive Alstroemeria cultivar particularly distinguished by its profuse and recurrent production of very large flowers, having six petals arranged in two concentric circles of three petals per flower. The outer petal being white and slightly tinted with a shade of red-purple with a marigold orange base, each of these outer petals having a few chrysanthemum crimson stripes. The inner petals are also white and are red-purple and lemon yellow with a lemon yellow base, each of these inner petals having a few Chrysanthemum crimson stripes.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: May 17, 1994
    Assignee: Van Staaveren B.V.
    Inventor: Jacob van Andel
  • Patent number: PP8739
    Abstract: A new and distinctive Alstroemeria cultivar particularly distinguished by its profuse and recurrent production of very large flowers having an lemon yellow coloration for all of its petals with the exception of Chrysanthemum crimson spots on the two inner lateral petals of the six petals arranged in two concentric circles of three petals per flower; these flowers being carried on erect stems branching from a tall main stem forming a strong upright bush.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: May 17, 1994
    Assignee: Van Staaveren B.V.
    Inventor: Jacob van Andel
  • Patent number: PP8740
    Abstract: A new and distinctive Alstroemeria cultivar particularly distinguished by its profuse and recurrent production of very large flowers, having six petals arranged in two concentric circles of three petals per flower. The outer petal being chrome red with an orchard pink base. The inner petals being white with an orchard pink base and many chrysanthemum crimson stripes.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: May 17, 1994
    Assignee: Van Staaveren B.V.
    Inventor: Jacob van Andel
  • Patent number: RE34608
    Abstract: An improved spray nozzle for use with air atomizable liquids wherein the spray pattern created by the atomizing nozzle may be adjusted from a circular pattern to a flat pattern or alternatively to an open oval. The open end faces in preselected directions. The adjustments are capable of occurring during the continuous operation of the nozzle.
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: May 17, 1994
    Assignee: AccuSpray, Inc.
    Inventor: John W. Hufgard
  • Patent number: RE34609
    Abstract: A method for the low-loss regulation of a collectorless direct current motor and a semiconductor circuit has, during the commutation phase given by a position sensor and with reduced motor output and number of revolutions, transistors or one end transistor which initially operates temporarily as a switch and thereafter operates temporarily as an analog amplifier element. During the analog period, a current is available which changes slowly according to a ramp function.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: May 17, 1994
    Assignee: Papst Licensing GmbH
    Inventor: Rolf Mueller
  • Patent number: RE34610
    Abstract: A mounting plate (20) is positioned between a manifold (18) and a pair of fluid pressure transmitters including a differential pressure transmitter (22) and a gauge pressure transmitter (24). The fluid pressure from high and low pressure taps or lines (14, 16) placed on opposite sides of a flow restriction (12) of a main flow line (10) is measured and transmitted to a remote location by the transmitters (22, 24). The mounting plate (20) has low and high pressure ports (62, 64) for differential pressure transmitter (22) and a low pressure port (66) for a gauge pressure transmitter (24). A connecting fluid passage (68) connects the low pressure ports (62, 66) and a block valve (80) is movable between open and closed positions to permit or block fluid communication between the ports (62, 66) and fluid communication between the transmitters (22, 24).
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: May 17, 1994
    Assignee: Keystone International Holdings Corp.
    Inventors: Randall J. Miller, Alan F. Chou
  • Patent number: RE34611
    Abstract: A video distribution system transmits selected video programs to a number of independently controlled video monitors. The video monitors are arranged in groups, each group being coupled to a distinct transmission medium. A program selector associated with each video monitor generates video connection requests which specify a video source to be connected to that video monitor. A two stage video switch apparatus couples specified video sources to specified video monitors. The first stage routes specified video signals from the video sources to the second stage, which is a frequency multiplexer. The frequency multiplexer then transmits the specified video signals for each group of video monitors in distinct frequency bands on one of the transmission mediums. Each video monitor within each group of monitors has a tuner that is tuned to receive the video signal in a distinct one of the frequency bands.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: May 17, 1994
    Assignee: On Command Video Corporation
    Inventors: Robert B. Fenwick, Larry L. Peden, Robert Snyder, John W. McMains, Jeffrey R. Gile
  • Patent number: 5311617
    Abstract: A toilet attachment for placing the user in the proper crouched configuration for bowel movement. Various embodiments are disclosed. Certain embodiments lift the legs of the user by a bar under the knees or feet. Other embodiments provide a tilting seat.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: May 17, 1994
    Inventors: Francis J. Ammatelli, Edward L. McMullen
  • Patent number: 5311618
    Abstract: A spacer assembly mounted to an associated commode seat is provided to effect sanitized spacing for an individual utilizing the seat, wherein the spacer assembly includes a plurality of arcuate members, each having a plurality of spring finger leg portions extending from bottom walls of the assembly to secure opposed side walls of the commode seat.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: May 17, 1994
    Inventors: Kenneth V. Breimon, Mary Breimon
  • Patent number: 5311619
    Abstract: Disclosed is a device for opening and closing a toilet seat hingedly attached to a toilet, which device comprises an elongated flexible cable having one end attached to the underside or outer periphery of the toilet seat at a position removed from the hinge attachment and the other end attached to an electric motor at a location remote from the toilet seat, wherein the electric motor also has a break for holding the toilet seat slightly less than full vertical or open position so that when the break is released, the toilet seat may be lowered to its horizontal or closed position. In a further embodiment of the device disclosed is a spring on the hinge which urges a seat toward the horizontal or closed position and having its greater urging force when the seat is in the vertical or open position.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: May 17, 1994
    Inventor: Keith J. Ward
  • Patent number: 5311620
    Abstract: An improved portable shower having a one piece inflatable enclosure anchored to the ground by filling the bottom ring with water or alternately using provided flaps with eyelets to stake it to the ground. A common water sprayer having a modified air pump that can be used to inflate the enclosure, a positionable spray nozzle to direct water stream more effectively, and an extended hose for overhead reach when water container is upright on the ground.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: May 17, 1994
    Inventor: James P. Ratje
  • Patent number: 5311621
    Abstract: A shower unit 1 comprises a mixing chamber 2 having an inlet 7 for hot water, an inlet 27 for cold water, a jet or nozzle 5 connected to the inlet 27 for causing the cold water and to entrain the hot water to form a mixture for discharge from the chamber 2 to a shower head or rose 6 which forms an integral part of the unit.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: May 17, 1994
    Assignee: British Gas PLC
    Inventor: Ming B. Tung
  • Patent number: 5311622
    Abstract: A device for facilitating the transfer of an incapacitated individual from a bed to a wheelchair includes a foot support having a generally planar upper surface for receiving the patient's feet and a base disposed vertically below the foot support and having a generally planar lower surface for engaging a support floor, coupling means for rotatably coupling the foot support on the base for relative rotation about a generally vertical axis and with the upper surface of the foot support and the lower surface of the base lying in generally parallel horizontal planes.
    Type: Grant
    Filed: July 6, 1992
    Date of Patent: May 17, 1994
    Inventor: Roy H. Allen
  • Patent number: 5311623
    Abstract: A hydropneumatic mattress with upper water containing tubes and lower air containing tubes is disclosed. The upper and lower tubes are supported by a layer. The tubes are individually removable for replacement. The mattress construction is especially desirable because it is articulatable along its length.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: May 17, 1994
    Inventor: Elias A. M. Hendi
  • Patent number: 5311624
    Abstract: An innerspring mattress construction is provided which includes a laminated liquid or moisture barrier layer which itself provides improved attachment properties. Also provided is a water mattress construction having improved resistance to leakage. Also provided is an improved pocketed coil construction which is resistant to moisture.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: May 17, 1994
    Assignee: Simmons Company
    Inventor: Ronald G. Hutchinson
  • Patent number: 5311625
    Abstract: By providing position control means cooperatively associated with a support pad with said control means being constructed for arcuately moving the support pad in response to activation by the user, with the position control means and pad peripherally surrounded by a cover, a unique, portable, self-contained, unitary, movably adjustable support assembly is attained whereby individuals are able to position the support pad in any desired location or on any surface while also being able to automatically raise and/or lower the support pad to any position for comfort and support. In the preferred embodiment, the movably adjustable support assembly is constructed with expandable shroud means integrally connected with the cover in association with the position control means for expanding in response to the arcuate movement of the position control means while being automatically retracted into a folded configuration when the control means are returned to its original position.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: May 17, 1994
    Assignee: Truman Products
    Inventors: Donald Barker, John Hamma
  • Patent number: 5311626
    Abstract: The fabric (1), which is pre-treated wet and is supplied in strand form, is inflated to form a balloon (15, 15', 15", 15"') by means of a gaseous medium, is then combined again to form a strand and in strand form is guided through an overflow pipe (17, 17', 17", 17"'). Subsequently, these process steps are repeated a plurality of times in analogous sequence.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: May 17, 1994
    Assignee: Solipat AG
    Inventor: Christian Strahm
  • Patent number: 5311627
    Abstract: The invention relates to the discontinuous wet treatment of a hank of fabric in at least one cycle of the fabric through a treatment compartment. In order to achieve a rapid and reliable wet treatment with a relatively simple construction, the treatment compartment is divided into two treatment chambers which lie parallel adjacent to one another, so that with each circulation of the fabric two sections of fabric running parallel to one another are treated simultaneously in two similar treatment chambers of the same treatment compartment which serve for the same type of treatment.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: May 17, 1994
    Assignee: Bruckner Apparatebau GmbH
    Inventors: Werner Koch, Gerd Kolmer
  • Patent number: 5311628
    Abstract: A dock leveler assembly for a loading dock is provided having an adjustable ramp, a pivotally mounted lip and a pivotally mounted barrier plate both disposed at front edge portion of the ramp. The pivotal movement of the lip and the barrier plate are coordinated so that, when the lip is in a depending stored position, the barrier plate may be selectively adjusted to assume either an operative upwardly projecting vehicle barrier mode or an inoperative non-projecting mode allowing material handling equipment to load or unload the rear end of a vehicle parked adjacent the loading dock. When the lip is in an operative cantilevered position bridging a gap formed between the ramp front edge portion and the bed of a parked vehicle the barrier plate assumes the inoperative mode allowing material handling equipment to pass over the ramp and the lip onto the bed of the parked vehicle during loading and unloading thereof.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: May 17, 1994
    Assignee: Rite-Hite Corporation
    Inventors: Scott L. Springer, Norbert Hahn
  • Patent number: 5311629
    Abstract: An improved article and method for making and installing a bridge deck replacement system. Subsystem articles include a plurality of precast slabs which contain features, notably projections and plates which depend from the underside thereof, which are used to form both haunch forms/molds and grout engaging devices. When used in conjunction with the conventional and preestablished supporting structure subsystem, the slabs, though use of the various devices included and/or depending therefrom, non-shrink grouting and the improved method of installation, are securable thereto and, yet, may be severally and/or discretely removed at a later time and replaced with new slabs. The replacement facility is obtained concomitant with the attainment of an overall system having a truly composite action in that slabs and support structure subsystems function as a singular unit.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: May 17, 1994
    Inventor: Peter J. Smith
  • Patent number: 5311630
    Abstract: A rotary eraser has a simple structure, is extremely capable of erasing a letter or other printed material, and facilitates an adjustment of the position of the erase. The rotary eraser includes a cylindrical body, an eraser holder which holds a rod eraser and is rotated by pressing down the body, an outer cylinder which is rotatable together with the eraser holder, an energizing component which biases the eraser holder in a direction in which the rod eraser protrudes, and an eraser bearer by which the position of the eraser in the eraser holder can be changed when the outer cylinder is turned.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: May 17, 1994
    Assignee: Midori Co., Ltd.
    Inventors: Shinsuke Nakamura, Satoshi Mochizuki
  • Patent number: 5311631
    Abstract: A water driven cleaning apparatus for use in spas, hot tubs and like open-topped enclosures suitable for bathing and having a pressurized water system. This fast, efficient, easy-to-use cleaning system extends the pressurized water system to create vacuum pressure used to remove sand, gravel, leaves, needles and other unwanted foreign matter collected in the vessel. An in-line filter traps these particles and permits removal before they enter the primary filtration system. This apparatus can be used by the bather from inside or outside the vessel. The vessel may be located indoors or outdoors. The apparatus operates without modifying the spa, hot tub or like open-topped enclosure.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: May 17, 1994
    Inventor: Cossie L. Smith, Jr.
  • Patent number: 5311632
    Abstract: A device for removing plaque from teeth comprises a toothbrush having a thick, cylindrical, hollow handle in which are located an electric motor actuable to cause rotation of an eccentrically mounted member and vibration of the entire device, and an ultrasonic transducer actuable to produce high frequency sound waves along the brush. The combination of brush vibration and ultrasound loosens and removes plaque from the teeth.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: May 17, 1994
    Inventor: Leslie T. Center
  • Patent number: 5311633
    Abstract: The invention is directed to an electric power driven toothbrush having a four-bar linkage (8) disposed in the handle section, the input end thereof being driven by an electric motor (2) through a train of spur gears, while the output end thereof drives in an oscillatory manner an output shaft (15) within an angular range of .+-.35.degree., approximately. The output shaft (15) is suitable for coupling engagement with a toothbrush section through a bevel gear train, and the axis of rotation of the toothbrush section forms an approximately right angle with the axis of the output shaft (15).
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: May 17, 1994
    Assignee: Braun Aktiengesellschaft
    Inventors: Karl Herzog, Gustav Gassner
  • Patent number: 5311634
    Abstract: Disc shaped cleaning pads for use on cleaning apparatus, consisting of a supporting core to which a sponge is affixed. The sponge is a microporous material made from a hydroxylated polymer, the physical properties of which can be modified in the chemical growing process.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: May 17, 1994
    Inventor: Nicholas Andros
  • Patent number: 5311635
    Abstract: A back cleaning apparatus which is adapted to be mounted in either a shower or bathtub. The apparatus includes suction cups for removably attaching it to the wall of a shower or bathtub. The cleaning surface comprises a sponge rubber member provided with a covering member such as indoor-outdoor carpet.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: May 17, 1994
    Inventor: Gaylon L. Moore
  • Patent number: 5311636
    Abstract: A windshield wiper frame for use in a windshield wiper assembly for motor vehicles includes a pair of primary yokes, and a bridge member pivotally connected to the pair of primary yokes and having at least one elongated vane which extends downwardly and at a slant from the front wall of the bridge member. This windshield wiper assembly can efficiently wipe the convex surface of the windshield glass and extend the operational life thereof.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: May 17, 1994
    Inventor: Albert Lee
  • Patent number: 5311637
    Abstract: A vacuum apparatus for temporary installation in a fireplace or stove of the type having a central opening with a floor at the bottom and a flue at the top thereof for cleaning the flue. The apparatus includes a hollow funnel-shaped adapter member configured at its upper end to generally conform to the size and shape of the bottom portion or throat of the flue of the fireplace and has a bottom end connected by a flexible hose to the inlet of a collection container. The collection container has an outlet which receives the free end of a vacuum cleaner hose which is connected to the intake of a conventional vacuum cleaner. The adapter member is supported by a pair of spring biased telescoping legs which maintain a resilient seal at the top end of the adapter member in sealing relation with the bottom portion or throat of the flue of the fireplace.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: May 17, 1994
    Inventor: Kenneth J. Broussard
  • Patent number: 5311638
    Abstract: An improved cleaning system of the type which applies a cleaning fluid to a surface to be cleaned and then vacuums the dirty cleaning fluid from said surface is provided. The system includes a cleaning fluid pump for delivering pressurized cleaning fluid to spray nozzles attached to either a floor nozzle or a hand tool. Both the floor nozzle and the hand tool are connected to the suction and cleaning fluid connectors of the main cleaner unit by a one-step connection which connects both fluid and suction lines in a single motion. The hand tool, which is attached to the main unit by a hose assembly, has its own pinch valve for controlling the application of cleaning fluid to the surface to be cleaned. When the hand tool is being used the trigger which actuates the pump may be locked in the "on" position.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: May 17, 1994
    Assignee: The Regina Company
    Inventors: Kent J. Furcron, John W. Walch
  • Patent number: 5311639
    Abstract: A system for detecting and removing foreign object debris from an enclosed region is capable of insertion through a small-sized opening. A source of light is optically transmitted through a first window in the outer peripheral surface of an elongated borescope adjacent its distal end to illuminate a debris containing region. An image of the region is transmitted through a second window in the distal end of the borescope to a remote television monitor. A vacuum conduit extends to a flexible tip end which is proximate to the distal end of the borescope and is connected to a source of vacuum to create a suction at the tip end. An elongated guide sleeve serves to slidably receive the vacuum conduit. The tip end of the vacuum conduit is movable relative to the guide sleeve between a retracted position substantially coincident with the first end of the guide sleeve and an extended position whereat the tip end of the vacuum conduit is distant from the first end.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: May 17, 1994
    Assignee: Avco Corporation
    Inventor: Geoffrey C. Boshier
  • Patent number: 5311640
    Abstract: A dry vacuum apparatus for a dental operatory features an in-line configuration wherein a power unit subassembly is directly mounted upon a collection tank with a pair of brushless DC vacuum motor fan units in axially aligned, vertically stacked reverse relation with air inlets of the motors confronting one another and with a vacuum air outlet of one blower connected in series relation to a vacuum air inlet of the other blower, an air cooling circuit being provided for supplying cooling air to a common sealed plenum chamber servicing the confronting motor air inlets and also to the vacuum air inlets of the blowers.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: May 17, 1994
    Inventor: Robert S. Holland
  • Patent number: 5311641
    Abstract: An in-duct searching apparatus characterized by comprising a traveling truck, a video camera for in-duct observation on board the traveling truck, a singular or plural compressed air ejecting nozzle, and a monitor/remote-control portion for remotely controlling the traveling truck and the video camera and the compressed air ejecting nozzle; wherein the compressed air ejecting nozzle ejects compressed air toward the alien substances inside the duct which have been observed by the video camera, for grasping their properties.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: May 17, 1994
    Assignees: Ataka Construction & Engineering Co., Ltd., Kobe Mechatronics Co., Ltd.
    Inventors: Kenji Matsuura, Katsumi Toritani
  • Patent number: 5311642
    Abstract: A door closer being affixable to a door for closing the door. A channel having a slide therein for engaging with a detent also in the channel for holding the door open. The slide is connected to an arm of the door closer which arm moves the slide along the channel into contact with the detent which holds the door open once the detent and the slide have engaged with one another.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: May 17, 1994
    Assignee: Dorma GmbH + Co. KG
    Inventors: Horst Tillmann, Dietrich Jentsch, Thomas Hering, Thomas Warschewitz, Dieter Sichelschmidt, Bernd Winkler