Patents by Inventor Richard A. Hallett

Richard A. Hallett has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11953360
    Abstract: A volumetric flow measuring and metering device for flowable solids as a flow passage through which a flow of bulk material may be passed. An obturating device is positioned at the bottom end of the flow passage and is movable in a linear direction toward and away from the bottom end. The obturating device is positioned relative to the bottom end of the flow passage at a distance that imparts a consolidated, column-like flow of the bulk material in the flow passage. A speed sensor operates to measure a speed of consolidated, column-like flow of the bulk material in the flow passage. A controller uses the speed data from the speed sensor to calculate a volumetric flow rate of the bulk material flowing through the flow passage. The obturating device can be selectively positioned to increase or decrease the volumetric flow rate of the bulk material. Other aspects are also provided.
    Type: Grant
    Filed: April 13, 2023
    Date of Patent: April 9, 2024
    Inventor: Richard Hallett
  • Patent number: 10775683
    Abstract: A view camera system that uses an adjustable adapter assembly to attach a relatively-inexpensive film camera body or digital camera sensor to the view camera. The adapter assembly includes a C-shaped support arc and an L-shaped cantilevered camera mount that is removably attached to the arc. The camera mount can be attached to the support arc at three orientations: portrait, 45° tilt, or landscape. A digital camera body can be attached to the camera mount with a thumb screw. The view camera system can have dual, 5-axis movements that allow for tilt, swing, rise and fall, shift, and micro-focus adjustments.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: September 15, 2020
    Inventor: Richard Hallett
  • Patent number: 10578953
    Abstract: A view camera system that uses an adjustable adapter assembly to attach a relatively-inexpensive film camera body or digital camera sensor to the view camera. The adapter assembly includes a C-shaped support arc and an L-shaped cantilevered camera mount that is removably attached to the arc. The camera mount can be attached to the support arc at three orientations: portrait, 45° tilt, or landscape. A digital camera body can be attached to the camera mount with a thumb screw. The view camera system can have dual, 5-axis movements that allow for tilt, swing, rise and fall, shift, and micro-focus adjustments.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: March 3, 2020
    Inventor: Richard Hallett
  • Publication number: 20110309227
    Abstract: A locking device (2) for locking an object (4) on a support structure (6), which locking device (2) comprises a fork arrangement (8) for engaging the object (4), first locking means (10) for locking the fork arrangement (8) to the Object (4) in a horizontal plane, second locking means (12) for locking the fork arrangement (8) to the object (4) in a vertical plane, and movement-permitting means (14) which permits vertical movement in the locking device (2), the vertical movement being sufficient to allow the support structure (6) to flex so as to prevent the flexing of the support structure (6) acting through the locking device (2) and damaging the object (4), but with the vertical movement being insufficient adversely to affect secure locking of the object (4) on the support structure (6) by the locking device (2).
    Type: Application
    Filed: January 5, 2010
    Publication date: December 22, 2011
    Inventors: Neal Marshall, Brian Richard Hallett
  • Publication number: 20110266845
    Abstract: Seating apparatus (2) for use on a vehicle (4) having a flat carrying area (6), which seating apparatus (2) comprises a frame giving roll over protection to a person (10) seated on the seating apparatus (2) in the event that the vehicle (4) should roll over onto its side, at least one side facing seat (12) which is mounted in the frame (8) and on which the person (10) sits, and securing means (14) for releasably securing the seating apparatus (2) on the flat carrying area (6) of the vehicle (4) whereby the seating apparatus (2) is able to be secured on the flat carrying area (6) and removed from the flat carrying area (6), characterised in that the frame (8) includes at least one protection bar (16) which extends longitudinally with respect to the vehicle (4), which is positioned at an angle with respect to a vertical plane (18) extending longitudinally through the frame (8), and which is positioned at an upper part (20) of the frame (8), whereby the protection bar (16) affords protection to the person (10) o
    Type: Application
    Filed: January 5, 2010
    Publication date: November 3, 2011
    Inventors: Neal Marshall, Brian Richard Hallett
  • Publication number: 20060201104
    Abstract: A tube with an internal channel of a complex geometry. The channel does not distort or collapse when the tube is bent 90 degrees with a 4-inch radius. Fabric may be inserted into and securely held in the internal channel. The tube is suitable for constructing frames of fabric structures, such as dodgers and biminis for boats, tents, chairs, etc.
    Type: Application
    Filed: March 11, 2005
    Publication date: September 14, 2006
    Applicant: Hallett Canvas and Sails, Inc.
    Inventors: Richard Hallett, Richard Dowzall
  • Patent number: 6827164
    Abstract: An industrial truck having a drive portion including wheels being connected to an electric motor being connected to a power source and a trailer portion having wheels. The industrial truck includes a steering system positioned on the drive portion connected to the trailer portion to provide articulated steering of the industrial truck. The industrial truck further including a control device to vary the speed of the motor to vary the speed of the industrial truck.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: December 7, 2004
    Inventors: Anthony J. Palumbo, Richard A. Hallett, Jeffrey T. Major
  • Publication number: 20030194314
    Abstract: The present invention relates to an improved fluid handling system including an improved collection trough and pump assembly. A centrifugal pump is mounted in the path of cutting fluid that needs to be pumped from a collection system and discharged. A wide and narrow inlet mouth lies very low on the factory floor enabling the centrifugal pump to be mounted right on the floor and not within the floor. An optional vacuum system provides suction within the centrifugal pump that aids in priming the pump at start up and in removing air from a pump chamber within the pump, thus allowing more efficient pumping to take place. An impeller rotates within the pump creating a vortex within the pump chamber which facilitates movement of dirty cutting fluid including metal particles to be pumped through to a discharge outlet.
    Type: Application
    Filed: May 23, 2003
    Publication date: October 16, 2003
    Inventors: Stephen N. McEwen, Richard A. Hallett
  • Patent number: 6629814
    Abstract: The present invention relates to a fluid handling system including a collection trough and pump assembly. A centrifugal pump is mounted in the path of cutting fluid that needs to be pumped from a collection system and discharged. A wide and narrow inlet mouth lies very low on the factory floor enabling the centrifugal pump to be mounted right on the floor and not within the floor. An optional vacuum system provides suction within the centrifugal pump that aids in priming the pump at start up and in removing air from a pump chamber within the pump, thus allowing more efficient pumping to take place. An impeller rotates within the pump creating a vortex within the pump chamber which facilitates movement of dirty cutting fluid including metal particles to be pumped through to a discharge outlet.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: October 7, 2003
    Assignee: Henry Filters, Inc.
    Inventors: Stephen N. McEwen, Richard A. Hallett
  • Publication number: 20030091425
    Abstract: The present invention relates to an improved fluid handling system including an improved collection trough and pump assembly. A centrifugal pump is mounted in the path of cutting fluid that needs to be pumped from a collection system and discharged. A wide and narrow inlet mouth lies very low on the factory floor enabling the centrifugal pump to be mounted right on the floor and not within the floor. An optional vacuum system provides suction within the centrifugal pump that aids in priming the pump at start up and in removing air from a pump chamber within the pump, thus allowing more efficient pumping to take place. An impeller rotates within the pump creating a vortex within the pump chamber which facilitates movement of dirty cutting fluid including metal particles to be pumped through to a discharge outlet.
    Type: Application
    Filed: March 19, 2001
    Publication date: May 15, 2003
    Applicant: Steven McEwen
    Inventors: Stephen N. McEwen, Richard A. Hallett
  • Publication number: 20030057002
    Abstract: An industrial truck having a drive portion including wheels being connected to an electric motor being connected to a power source and a trailer portion having wheels. The industrial truck includes a steering system positioned on the drive portion connected to the trailer portion to provide articulated steering of the industrial truck. The industrial truck further including a control device to vary the speed of the motor to vary the speed of the industrial truck.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 27, 2003
    Inventors: Anthony J. Palumbo, Richard A. Hallett, Jeffrey T. Major
  • Patent number: 6125883
    Abstract: A floor mounted sump pump assembly for pumping particulate laden dirty coolant discharged by a floor mounted machine tool station includes a sump tank having a cylindrical wall spaced around a central axis and an inclined bottom with a central lower region. A pump is positioned within the sump tank offset from the central axis. The pump has an inlet oriented above and adjacent to the central lower region. A conduit has an outlet coupled to the sump tank for discharging dirty coolant from the machine tool station into the sump tank. The discharged dirty coolant swirls down around the inclined bottom to the central lower region for the pump inlet to pump the dirty coolant out of the sump tank. An overflow tank is adjacent to the sump tank to collect overflow coolant from the sump tank. A return pump is operable with the overflow tank to discharge the overflow coolant back into the sump tank.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: October 3, 2000
    Assignee: Henry Filters, Inc.
    Inventors: John L. Creps, Richard A. Hallett
  • Patent number: 6050788
    Abstract: A pump for pumping fluids in a filtration system is disclosed. The pump has a thrust balancing means to reduce axial loads on motor bearings of the pump during operation of the pump. A drive system of the pump includes an elongate flexible shaft interconnecting a drive shaft and an impeller shaft. The elongate flexible shaft bends and twists to accommodate misalignment during assembly of the drive system. A seal assembly is provided for sealing about a drive shaft. The seal assembly is evacuated to prevent pumped fluid from contaminating fluids in the motor. A concentric coupling and method for making the same are taught which include a cylindrical block which is concentrically bored and cut into an annular L-shaped segment having an L-shaped notch and a semi-cylindrical mating segment which is received into the notch. The coupling concentrically joins a pair of shafts together.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: April 18, 2000
    Assignee: Henry Filters, Inc.
    Inventors: Stephen N. McEwen, Richard A. Hallett, Robert F. Benschoter, Scott M. McEwen, Anthony J. Palumbo
  • Patent number: 5961847
    Abstract: An improved filter apparatus includes an upper tank for holding dirty liquid and has a perforated plate. A lower compartment is beneath the plate for receiving liquid from the upper tank. A permanent filter belt for filtering particulate from the dirty liquid is arranged in a first circulating path across the plate. A first pair of drive loops are attached on respective sides of the belt. A drag conveyor having flights is arranged in a second circulating path across the plate. The belt is positioned between the plate and the flights of the conveyor across the plate. A second pair of drive loops are attached on respective sides of the flights. A driving mechanism is operable with the drive loops for indexing the belt and the conveyor along the circulating paths such that a fresh segment of the belt is periodically indexed over the plate while a dirty segment of the belt is being cleaned and the flights of the conveyor carry away accumulated particulate filtered by the belt.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: October 5, 1999
    Assignee: Henry Filters, Inc.
    Inventors: John L. Creps, Stephen N. McEwen, Richard A. Hallett, Clayton E. Tenniswood
  • Patent number: 5655849
    Abstract: A concentric coupling and method for making the same are taught which include a cylindrical block which is concentrically bored and cut into an annular L-shaped segment having an L-shaped notch and a semi-cylindrical mating segment which is received into the notch. The coupling concentrically joins a pair of shafts together.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: August 12, 1997
    Assignee: Henry Filters Corp.
    Inventors: Stephen N. McEwen, Richard A. Hallett, Robert F. Benschoter, Scott M. McEwen, Anthony J. Palumbo
  • Patent number: 5589318
    Abstract: A high-contrast photographic material, adapted for use in the field of graphic arts, includes a hydrazide nucleating agent and comprises a silver halide emulsion layer containing silver halide grains which are spectrally sensitized with a non-desorbing sensitizing dye and silver halide grains which are not spectrally sensitized. Preferably, the photographic material also contains a booster compound which enables it to be processed in a developer having a pH of below 11.
    Type: Grant
    Filed: January 4, 1996
    Date of Patent: December 31, 1996
    Assignee: Eastman Kodak Company
    Inventors: Allison Hazel C. Dale, Roger H. Piggin, Richard A. Hallett, Paul R. McIntyre
  • Patent number: 5503520
    Abstract: A pump for pumping fluids in a filtration system is disclosed. The pump has a thrust balancing means to reduce axial loads on motor bearings of the pump during operation of the pump. A drive system of the pump includes an elongate flexible shaft interconnecting a drive shaft and an impeller shaft. The elongate flexible shaft bends and twists to accommodate misalignment during assembly of the drive system. A seal assembly is provided for sealing about a drive shaft. The seal assembly is evacuated to prevent pumped fluid from contaminating fluids in the motor. A concentric coupling and method for making the same are taught which include a cylindrical block which is concentrically bored and cut into an annular L-shaped segment having an L-shaped notch and a semi-cylindrical mating segment which is received into the notch. The coupling concentrically joins a pair of shafts together.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: April 2, 1996
    Assignee: Henry Filters, Inc.
    Inventors: Stephen N. McEwen, Richard A. Hallett, Robert F. Benschoter, Scott M. McEwen, Anthony J. Palumbo