Patents Represented by Attorney Frank C. Lowe
  • Patent number: 4062526
    Abstract: In conditioning pulp, such as ore particles carried by or in suspension in water, or other particles, conditioning prior to flotation involves the addition of one or more reagents to the pulp or the like. By this invention, an agitation and pumping zone, spaced from the bottom of the tank in which the operation is carried out, pumps pulp outwardly in swirling, circumferential streams. A conditioning reagent is supplied to the active area of the pumping zone, such as the center of the zone. The operation may be enhanced by using a pair of pumping zones, one above the other, as well as intercepting the streams of pulp radially outwardly of the pumping zones, as by a stabilizer having radially extending vanes.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: December 13, 1977
    Inventor: Charles A. Green
  • Patent number: 4053413
    Abstract: A fine mesh, cylindrical screen is mounted on a cylindrical support lengthwise of a ditch and rotated about its axis. The screen is over half submerged, such as leaving 30% of its area above the normal water level. The rotating screen, at its downstream end, abuts the pipe through which the water flows to a pump for supplying the sprinklers.As the screen rides up out of the water, the sediment clings to it. At the downstream end is a nozzle which discharges a jet of water to move the sediment longitudinally and to a position of engagement with a jet of water from a second nozzle spaced both longitudinally and circumferentially from the first nozzle. These nozzles are included in a series of nozzles which are similarly spaced to the upstream end, with the jet from the last nozzle moving the collected sediment to a position engageable by a suction nozzle just before the screen reenters the water.A special dam downstream from the screen normally insures that the water at the screen will be at the desired level.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: October 11, 1977
    Inventor: John M. Miller
  • Patent number: 4033073
    Abstract: A movable member of a grille or shutter is slidable with respect to a stationary member through tongue and groove or other slidable connections, between a fully open and a fully closed position. Both the movable member and the stationary member are provided with corresponding cross bars which are spaced both vertically and equally. Facing upright rails, such as at the center, of the movable member and fixed member are provided with opposed grooves, each for reception of a vertically placed bar magnet. The magnets are placed with their opposite poles facing each other, so that the magnets will attract, rather than repel. Preferably, the closed position of the movable member is the upper position, and the magnets are directly opposite each other in this position.
    Type: Grant
    Filed: January 9, 1976
    Date of Patent: July 5, 1977
    Inventor: Robert T. Bogan
  • Patent number: 4021985
    Abstract: A series of upright, longitudinally extending baffles are supported in parallel array, with the transverse or secondary baffles being formed by twisting out of the webs of the primary baffles an area initially separated by slots which leave a stem connecting the secondary baffle with the web at two opposed positions, normally the top and bottom. When the secondary baffle is twisted, each of the webs is twisted, as to 90.degree., to support the secondary baffle transversely to the primary baffles. Normally, the secondary baffles extend the same distance to each side of the corresponding primary baffle. The secondary baffles of one primary baffle are normally interspaced with the secondary baffles of the adjacent primary baffles.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: May 10, 1977
    Inventor: Charles U. Deaton
  • Patent number: 4020408
    Abstract: A pulse width modulated DC-to-DC power converter wherein a single ended transformer circuit includes a single switch transistor at the input and a rectifier at the output. A control circuit to the switch transistor base is powered by a drive winding on the transformer which is shunted by the primary winding of a saturable reactor. A regenerative winding opposing, and in series with, the drive winding provides the regenerative drive necessary to support oscillation of the circuit at a frequency determined by the saturation period of the saturable reactor. A resistor between the drive winding and the saturable reactor establishes both the magnitude of the drive current and the magnetizing current of the transformer. Pulse width modulation of the DC output is attained by a single, isolated DC voltage at the secondary of the saturable reactor.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: April 26, 1977
    Assignee: Etatech, Inc.
    Inventor: Jon H. Grant
  • Patent number: 4011802
    Abstract: The makeup air device includes a front chamber, a lower wall of which is adapted to force rising smoke and the like into an intake of a grease extraction ventilator. A depending passage at the lower front of the device has an air outlet which discharges air toward the ventilator intake. An adjustment baffle having a forwardly slanted lower flange is moved in the outlet between a position of maximum flow and a position of no flow. Louvers in the front wall of the chamber above the passage are adjustable, so that different amounts of fresh air may flow into the room in which the cooking equipment is placed.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: March 15, 1977
    Assignee: Stainless Equipment Company
    Inventors: Victor D. Molitor, Arlen W. Gallagher
  • Patent number: 4007566
    Abstract: The coping is mounted atop the gutter and each is formed of stainless steel, with the top surfaces being sandblasted to prevent slipperiness, particularly when wet. The gutter, which carries water overflowing and draining through slots in the coping, is also used as a form for pouring the concrete walls of the pool. The gutter provides not only check points for transit leveling, but also an upper rear flange for use in leveling the top of the concrete when poured.The rear of the coping is supported by the gutter, while the depending front wall of the coping is supported by an upwardly extending front wall of the gutter, at an outward offset of each, through a series of special, fine adjustment connecting devices. The upstanding front nose of the coping determines the level at which water will overflow, while the various sections of the coping may be adjusted through the fine adjustment devices, to correspond with the water level, thereby providing a highly accurate level setting for the rim.
    Type: Grant
    Filed: June 25, 1973
    Date of Patent: February 15, 1977
    Assignee: Stainless Equipment Company
    Inventor: Victor D. Molitor
  • Patent number: 3984880
    Abstract: A web has a front or lower footing attachable to the rim of a bathtub but bending or curving to the inner edge of the bathtub rim. A second or upward footing is attachable to the wall, normally tile, above the rim of the bathtub. A round bead, for both safety and strength purposes, extends along the edge of the web from the upper edge of the upward footing to the outer edge of the lower footing, curving outwardly and downwardly from the top, then downwardly at an angle, then concavely and then convexly to the lower footing.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: October 12, 1976
    Inventor: Arnold F. Schrameyer
  • Patent number: 3985602
    Abstract: A composite transfer sheet for lifting a printed image from a paper backing and thereafter transferring the same to a substrate of cloth or like material by the application of heat. An important feature of the composite sheet resides in the use of a protective layer of a selected, transparent, thermoplastic material which carries an adhesive to retain the image. Upon the application of heat, this thermoplastic layer will melt into and bond with the substrate. At the same time, this image is securely fixed upon the substrate beneath the surface of the plastic layer in a manner which prevents this image from being easily washed or otherwise removed from the substrate.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: October 12, 1976
    Assignee: Sangray Corporation
    Inventor: James H. Stuart
  • Patent number: 3981699
    Abstract: A purifier which includes round and spiral labyrinth passages in heat exchange relationship with similar passages, the incoming passages leading to and the outgoing passages leading from a container for gettering material heated by electrical heaters. The circumferential walls of the round passages are attached together by angular offsets in opposed positions, preferably at about 45.degree.. The spiral passages are formed by a circumferentially spiral plate with an end wall at each end of each passage. The plates may overhang the end walls, so that the plates can be melted back to fuse with the end walls. Also, the heat applied during such melting and fusion heats the end plates sufficiently to be readily bent into a spiral. A second container for gettering material may be located, with or without heating, along the outward path of the heated gases where the temperature will correspond to a lower temperature for further reaction of the gases with a gettering material.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: September 21, 1976
    Inventor: Victor D. Molitor
  • Patent number: 3976573
    Abstract: An endless screen extends around an upper roller, above the stream of a ditch or the like, and a lower roller, submerged in the stream. A cleaning brush engages the underside of the lower reach of the screen, the brush rotating in a direction opposite to the movement of the screen, while a roller or rod supports the screen just below the brush. The brush may be driven directly from a motor and speed reducer, with a belt drive to an upper pulley producing further speed reduction, or a speed reduction drive between the motor and the brush with a belt or chain drive to the upper roller may be utilized.The lower roller for the screen has a fixed center surmounted by a plastic or rubber bushing about which a cylinder of the lower roller rotates.A weir directs water onto the screen, the weir including a transverse partition mounted in the ditch and having a rectangular slot therein.
    Type: Grant
    Filed: January 17, 1975
    Date of Patent: August 24, 1976
    Inventor: John M. Miller
  • Patent number: 3975477
    Abstract: The coping and gutter of a rim flow swimming pool are supported by upwardly and downwardly adjustable jacks at spaced positions around the perimeter, with each beneath the lateral center of gravity. A gusset plate extends rearwardly from a reinforcement for the rear wall and may be moved upwardly and downwardly to adjust the transverse level. Each gusset plate, after final adjustment, is attached to a stake. The jacks and the gusset plates are adapted to be embedded in the concrete which forms the wall of the pool, preferably poured in layers by the "Gunite" method, and serve as reinforcements for the concrete.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: August 17, 1976
    Inventor: Victor D. Molitor
  • Patent number: 3973988
    Abstract: A carriage is driven from the back to the front of the inside of a trailer, either by rotating nozzles which discharge wash water against the inside of the trailer or by an electric motor. The carriage is guided by two laterally spaced rollers on each side. A hose supplying the wash water and later the rinse water, to the nozzles on the carriage, unwinds from a reel while the carriage is driven into the trailer, but the reel is turned by a motor to pull the carriage rearwardly of and out of the trailer. The trailer rests on an inclined ramp, with the rear edges abutting resilient pads for sealing purposes, the pads being placed around an opening in a partition in the building in which the carriage is housed. A wash tank receives liquid draining from the inside of the trailer, both wash water and rinse water, while a boiler heats the wash water.
    Type: Grant
    Filed: January 17, 1975
    Date of Patent: August 10, 1976
    Inventor: Richard C. McMahan
  • Patent number: 3972672
    Abstract: A band passes around two spaced parallel pulleys but behind a drum between the pulleys to flatten dough buns which are placed on the central drum. The central drum is raised or bulging at the center, while thin transverse cross bars are mounted on the drum. The tension of the band may be achieved through adjustment of bearings for the upper pulley, while a motor and speed reducer may be connected to the lower pulley.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: August 3, 1976
    Assignee: Thomas C. Luke
    Inventor: Alberto Flores Castro
  • Patent number: 3969870
    Abstract: A baffle assembly comprises a series of cross baffles which are pivotally connected, in depending relation, to a pair of longitudinal baffles, so that the longitudinal baffles and cross baffles may be folded together and thereby reduce considerably the shipping and storage space. Between spaced pairs of such baffle assemblies, a series of transverse baffles may be pivotally connected to angles which rest on outwardly extending ledges of the adjacent baffle assemblies. The space between adjacent baffle assemblies may be covered by lateral extensions of the cross baffles pivoted to the longitudinal baffles.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: July 20, 1976
    Inventor: Charles U. Deaton
  • Patent number: 3966433
    Abstract: A purifier having a central core in which is disposed a container for gettering material surrounded by electric heaters. Labyrinth passageways for heat exchange between the incoming and outgoing gases is formed by a series of "cans" which are welded in position and have an increasing end plate diameter and shell diameter from the core outwardly. Interspersed shells provide for incoming (outgoing) gas to pass from one end to the opposite end of a cylindrical passage, then turn around the end of the shell and pass in the opposite direction along the next inner (outer) passage. The incoming gas is transferred between passages by holes in alternate end plates, while the outgoing gas is transferred between one passage and the next outer passage by a "floating" end plate, around the inside circle of which the outgoing gas passes.A second container of gettering material, if desired, operating at a lower temperature can be interposed in the central core, but is insulated from the first container.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: June 29, 1976
    Inventor: Victor D. Molitor
  • Patent number: 3954315
    Abstract: Both the tracks attached to the inside of the side walls of a cabinet and the slides attached to the outside of the side walls of the drawer are inclined downwardly and outwardly, so that the drawer will normally move outwardly from the cabinet by gravity. A bump or upward arcuate indentation in the top flange of each drawer slide adjacent the front edge thereof will engage the roller of the respective cabinet track to hold the drawer in a closed position. A lip extending downwardly from the upward indentation will raise the drawer upwardly when it is pushed rearwardly, so that release of the drawer will then cause an impetus to be given to the drawer which will carry the indentation over the front roller and the drawer will automatically move to open position.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: May 4, 1976
    Inventor: Edwin H. Sanden
  • Patent number: RE28977
    Abstract: A retaining wall for supporting the embankment of a cut excavation. The wall structure consists of a skin of concrete, an array of rows and columns of dowels or tendons extending from the skin into the cut embankment and rows of wale beams at the juncture of dowels and the face of the skin tying the components together. The retaining wall is built as the cut proceeds. A cut to a selected depth is covered by a skin of pneumatically applied concrete. The dowels are formed as reinforcing, grout-filled boreholes and the wale beams are formed as reinforced concrete members pneumatically sprayed against the skin.
    Type: Grant
    Filed: January 25, 1974
    Date of Patent: September 28, 1976
    Assignee: Shotcrete Engineering, Ltd.
    Inventor: Edward E. Mason
  • Patent number: D244149
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: April 26, 1977
    Inventor: Carl W. Davis