Patents by Inventor Leonard R. Nitzberg

Leonard R. Nitzberg 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: 5285807
    Abstract: A quickly-disconnecting coupling suitable for use in a fuel dispensing system reduces fluid pressure-generated axial separation forces on the coupling. A first body member has one or more fluid passages therethrough in fluid communication with corresponding fluid passages through a second body member. A detent is provided to couple the body members to each other in flow communication and to uncouple them when a force in excess of a predetermined level is exerted on the coupling. The detent may be frangible or infrangible. Means are provided to hold the first and second body members in axial juxtaposition with each other. Valving is provided for sealing fluid passages against loss of fluid when the detent releases the first and second body members from axial juxtaposition.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: February 15, 1994
    Inventor: Leonard R. Nitzberg
  • Patent number: 5078188
    Abstract: An automatic shut-off duel dispensing nozzle with a flow rate limiting mechanism. The nozzle includes a valve which controls the flow of fuel through a passage leading from the nozzle inlet to the nozzle outlet which is normally connected to a spout. This valve is responsive to a manually operable lever and to a vacuum operated release mechanism which automatically shuts the flow of fuel through the nozzle off when the level of fuel in a tank reaches a preselected level or when the flow of fuel through the nozzle reaches a preselected threshold rate of flow.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: January 7, 1992
    Assignee: Helix, Enterprises, Inc.
    Inventors: Leonard R. Nitzberg, Paul D. Manhardt
  • Patent number: 5018546
    Abstract: A fluid coupling having a pair of body members having fluid passageways through which fluid may flow through an inlet in one of the body members and out an outlet in the other member. One of the body members is connected in flow communication with a flexible hose, and the other body member is connected in flow communication to a rigid conduit by a connecting member about which the body members may rotate relative to a swivel axis. Valving shuts flow communication through the body members when they uncouple. If the excessive tensile force is axially applied through the hose to the coupling, the body members uncouple by pulling apart in the direction along the line of action of the force, but if the excessive tensile force is non-axially applied, the body members, if they cannot be aligned with the axial force vector to uncouple, will be uncoupled by a twisting action resulting from the bending load caused by the force.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: May 28, 1991
    Assignee: Helix Enterprises, Inc.
    Inventors: Paul D. Carmack, James A. Asbury, Leonard R. Nitzberg
  • Patent number: 5014732
    Abstract: A tensile force actuated fuel line swivel-joint quick-disconnecting coupling device has a pair of body members including interlocking elements which cooperatively couple and provide fuel passageways through the body members, and uncouple when a tensile force above a predetermined limit is interposed on the fuel line. The interlocking elements are in the form of a mortise and tenon connection and pivot one relative to the other about a swivel axis. A connecting member is pivotably connected to one of the body members and to a rigid conduit or fuel nozzle for rotation about a pivot axis. The other body member has a diverted fluid passageway including a longitudinal axis that extends to a port connected to a flexible fuel line. The pivot axis, the longitudinal axis and the swivel axis are disposed so that the longitudinal axis may align itself with the direction of any tensile force applied through the flexible fuel line.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: May 14, 1991
    Inventor: Leonard R. Nitzberg
  • Patent number: 4986321
    Abstract: A fuel dispensing nozzle for gasoline fuel pumping stations and the like has an inlet through which the fuel is supplied within a range of inlet pressures, an outlet from which fuel is discharged and a flow passage having valving for selectively opening communication between the inlet and the outlet in response to the pressure differential across the valving. The valving includes a housing within which a movable valve member is mounted, the valve member being actuated to open or partially close communication from an inlet of the housing to an outlet of the housing in response to the pressure differential across the valve member. As the pressure differential decreases above the pressure differential corresponding to the predetermined maximum rate, the valve member begins to close communication to prevent the flow from exceeding the predetermined maximum amount, and as the pressure differential increases communication is decreased so that the maximum predetermined flow rate is not exceeded.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: January 22, 1991
    Inventors: Leonard R. Nitzberg, Paul D. Manhardt
  • Patent number: 4951722
    Abstract: A flow rate limiting device (40) for a fuel dispensing nozzle (10) having an inlet (12) through which fuel is supplied to said nozzle (10) from a supply hose (14) and an outlet (20) from which fuel is discharged, as into a tank of a vehicle. The device (40) includes a flow restrictor (42) which is mounted in the fuel dispensing nozzle in its internal flow passage (16) the flow restricter (42) is automatically operated to reduce the flow rate, when the flow rate of fuel through said nozzle (10) reaches a preselected threshold rate such as the rate established by governmental regulations. After the flow rate of the fuel in the internal flow passage (16) is reduced below the preselected threshold rate, the flow restriction is attentuated such that the flow in the passage (16) can increase and approach the threshold rate.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: August 28, 1990
    Inventors: Leonard R. Nitzberg, Paul D. Manhradt
  • Patent number: 4947905
    Abstract: An automatic shut-off fuel dispensing nozzle (10) with a flow rate limiting mechanism (90). The nozzle (10) includes a valve (24) which controls the flow of fuel through a passage (16) leading from the nozzle inlet (12) to the nozzle outlet (20) which is normally connected to a spout. This valve (24) is responsive to a manually operable lever and to a vacuum operated release mechanism (26) which automatically shuts the flow of fuel through the nozzle off when the level of fuel in a tank reaches a preselected level or when the flow of fuel through the nozzle reaches a preselected threshold rate of flow.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: August 14, 1990
    Inventors: Leonard R. Nitzberg, Paul D. Manhardt
  • Patent number: 4917308
    Abstract: A fuel dispensing nozzle for gasoline fuel pumping stations and the like has an inlet through which the fuel is supplied within a range of supply inlet pressures, an outlet from which fuel is discharged and a flow passage having valving for selectively opening communication between the inlet and the outlet. At least one turbulence generating body is located in the flow passage between the inlet and the outlet and a turbulence damping or laminar flow inducing member is disposed in the flow passage upstream from the turbulence generating body member. The turbulence damping body member ensures that substantially laminar flow is directed to the turbulence generating member which thereby may predictably limit the rate of fuel flow through the nozzle to a predetermined maximum rate independent of the fuel inlet pressure within the supply range and independent of the amount of communication provided between the inlet and the outlet by the valving.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: April 17, 1990
    Inventors: Paul D. Manhardt, Leonard R. Nitzberg
  • Patent number: 4896688
    Abstract: A breakaway hose coupling device (10') for releasably joining the hose ends of two fluid communicating hoses and for selectively disengaging and sealing such hose ends in response to a disengaging force of a preselected value is disclosed. The coupling device (10') comprises a coupling sleeve (12') defining an interior surface provided with an annular groove (80). The coupling device (10') further comprises first and second valve assemblies (20'and 22') each comprising a valve housing (24'and 25') having a forward end portion (26') for being received in the opposite ends of the coupling sleeve (12'), and a rearward end portion defining a threaded receptor (34') for engaging a hose end. Each valve housing is also provided with a passageway (30') therethrough communicating with the hose end, the passageway (30') defining a forwardly disposed valve seat (32'). Each of the valve assembly (20'and 22') further comprising a spring biased poppet valve (58') mounted within the passageway (30').
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: January 30, 1990
    Assignee: Richards Industries, Inc.
    Inventors: Alton Richards, Leonard R. Nitzberg
  • Patent number: 4844344
    Abstract: A flow rate limiting device (24) for a dispensing nozzle (10) having an inlet (12) through which fuel is supplied to the nozzle (10) from a supply hose, an outlet (18) from which fuel is discharged, and an internal flow passage (14) along which fuel flows from the inlet (12) to the outlet (18). The flow rate limiting device (24) comprises turbulence generating means (26) mounted in the nozzle (10) within the internal flow passage (14) for generating a turbulence in the fuel flow, whereby such turbulence decelerates the flow of fuel through the passage (14).
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: July 4, 1989
    Inventors: Paul D. Manhardt, Leonard R. Nitzberg
  • Patent number: 4827960
    Abstract: A tensile force actuated quick disconnecting coupling device for a fuel line having a vapor return has a pair of body members including interlocking elements which cooperatively couple and provide fuel and vapor passageways through the body members, and uncouple when a tensile force above a predetermined limit is interposed on the line. The interlocking elements are in the form of a mortise and tenon connection having a detent type infrangible locking member for interconnecting the elements together. The interlocking elements pivot one relative to the other so that a combination swivel joint and quick disconnecting coupling device is provided. Valving is disposed within each body member so that when the body members uncouple respective valves close the fuel passageways therein. The valving may include cylindrical stems which abut and open the fuel passageways when the body members are coupled and additionally permit pivoting of one body member relatively to the other.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: May 9, 1989
    Assignee: Helix Enterprises, Inc.
    Inventors: Leonard R. Nitzberg, Paul D. Carmack
  • Patent number: 4827961
    Abstract: A fluid swivel joint coupling has first and second body members pivotably connected together for pivoting about a swivel axis. The first body member includes an inlet portal, an outlet portal, a diverted fluid passageway opening into the outlet portal and a channel communicating the inlet portal with the diverted passageway. The second body member is pivotably mounted in flow communication with the outlet portal and has a second diverted passageway communicating through a second channel to a third portal. Each channel has an axis of elongation offset from the swivel axis so that fluid may enter the diverted passageway in the first body member tangentially from the first channel and flow therethrough in vortex fashion along the swivel axis into the second diverted passageway and leave the second diverted passageway tangentially to flow out the second channel.
    Type: Grant
    Filed: October 18, 1988
    Date of Patent: May 9, 1989
    Assignee: Helix Enterprises, Inc.
    Inventors: Leonard R. Nitzberg, Paul D. Carmack
  • Patent number: 4800913
    Abstract: A combination spherical swivel joint and quick disconnect coupling device for a fuel supply line or the like permits universal swiveling of a spherical member within a socket member while the members are connected together in flow communication, and has interconnectable means for uncoupling when an external tensile force above a predetermined limit is applied to the fuel line. Valving is disposed within the spherical member and within the socket member so that when the members uncouple the passageway within each member is closed. A retaining member positioned within the socket member maintains the coupling relationship during normal operation.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: January 31, 1989
    Assignee: Helix Enterprises, Inc.
    Inventors: Leonard R. Nitzberg, Paul D. Carmack
  • Patent number: 4791961
    Abstract: A fluid swivel joint coupling has a body member, a first connecting member and a second connecting member. The body member includes an inlet portal, and outlet portal and a diverted fluid passageway connecting them. The first connecting member is pivotably mounted in flow communication with one of the portals for rotation about a first swivel axis, and the second connecting member is pivotably connected in flow communication with the other portal for rotation about a second swivel axis. The second connecting member has a diverted fluid passageway opening onto a third portal, a longitudinal axis extending through the third portal and a portion of the passageway. The first connecting member is operatively connected to a rigid conduit while the second connecting member is operatively connected at the third portal to a flexible conduit.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: December 20, 1988
    Assignee: Helix Enterprises, Inc.
    Inventors: Leonard R. Nitzberg, Paul D. Carmack
  • Patent number: 4779638
    Abstract: A tensile force actuated fuel line quick disconnecting coupling device has a pair of body members including interlocking elements which cooperatively couple and provide a fuel passageway through the body members, and uncouple when a tensile force above a predetermined limit is interposed on the fuel line. The interlocking elements may be in the form of a mortise and tenon connection having a detent type infrangible locking member for interconnecting the elements together. The interlocking elements may pivot one relative to the other so that a combination swivel joint and quick disconnecting coupling device is provided. Various types of interlocking members are disclosed as are both infrangible and frangible locking means. Valving is disposed within each body member so that when the body members uncouple respective valves close the flow passageways therein.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: October 25, 1988
    Assignee: Helix Enterprises, Inc.
    Inventors: Leonard R. Nitzberg, Paul D. Carmack
  • Patent number: 4674525
    Abstract: A breakaway hose coupling device (10) for releasably joining the hose ends of two fluid communicating hoses and for selectively disengaging and sealing such hose ends in response to disengaging force of a preselected value is disclosed. The coupling device (10) comprises a coupling sleeve (12) defining at least one shear pin hole (18) for receiving a shear pin (54) having a preselected shear strength. The coupling device (10) further comprises first and second valve assemblies (20 & 22) each comprising a valve housing (24, 25) having a forward end portion (26) for being received in the opposite ends of the coupling sleeve (12), and a rearward end portion defining a threaded receptor (34) for engaging a hose end. Each valve housing is also provided with a passageway (30) therethrough communicating with the hose end, the passageway (30) defining a forwardly disposed valve seat (32). Each of the valve assembly (20 & 22) further comprising a spring biased poppet valve (58) mounted within the passageway (30).
    Type: Grant
    Filed: August 16, 1985
    Date of Patent: June 23, 1987
    Assignee: Richards Industries, Inc.
    Inventors: Alton Richards, Leonard R. Nitzberg
  • Patent number: 4568126
    Abstract: A method and machine for removing blockage and silt from abandoned auger holes preparatory to mining a portion of the remaining ore or preparatory to the placement of charges in said holes. Initially, the highwall is faced up by removing blockage proximate and external to the auger hole as with conventional earth moving equipment. The blockage from within the mouth of the auger hole is removed to expose blockage deposited within the auger hole at locations spaced from the auger hole mouth. Blockage at locations spaced from the auger hole mouth is removed by a apparatus which collapses to penetrate the blockage and is deployed to engage the blockage such that as the machine is withdrawn from the auger hole, the blockage is removed therewith. A device is provided for completing the auger hole cleaning operation by entraining silt or other contaminates in a stream of water and collecting the silt laden water which is transported and discharged at a remote location.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: February 4, 1986
    Assignee: Patent Development, Ltd.
    Inventor: Leonard R. Nitzberg
  • Patent number: 4566707
    Abstract: A mechanism for the transport of an object across relatively level surfaces as well as to ascend and descend stairways. The mechanism is described particularly with respect to a wheel chair for handicapped persons and is provided with a frame and a pair of support wheels on each side of the frame. A climbing chain with lugs is associated with each wheel on the frame; these chains being inclined at an angle providing a desired lifting height. The wheel chair is either powered by the occupant or by electrical or other corresponding power means. Appropriate sensing means on the frame ascertain a nonlevel condition in pitch or yaw during ascent or descent of the stairs whereby corrections are made in the driving means such that a level orientation is re-established. Braking is provided by appropriate gearing whereby an interruption of the driving power holds the climbing chains in their current position.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: January 28, 1986
    Inventor: Leonard R. Nitzberg
  • Patent number: 4522448
    Abstract: A method of reducing a highwall or sharp cliff like exposure at a mining site to gradable rubble for the purpose of reclamation is disclosed. The method includes the steps of placing a series of non-directional explosive charges at specific preselected locations on the floor of cavities created by mining, such cavities being auger holes, longwall mine areas or the like. The charges are then detonated within the cavities to create rubble. Preferably, each cavity is sealed proximate its opening on the highwall with stemming to maintain pressure within the associated cavity during the blast and to alternate the expulsion of air blast emissions. The charges are detonated to attenuate the horizontal force vectors, and to enhance the vertical force vectors such that the major effect of the blasts is exerted on the overburden to assure breakage. An improved charge for carrying out the method of the present invention is also disclosed.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: June 11, 1985
    Inventor: Leonard R. Nitzberg
  • Patent number: 4438699
    Abstract: Method and apparatus for remotely positioning individual explosive charges at preselected locations in substantially horizontal voids created by mining hard material such as coal are disclosed. The method includes the steps of positioning at least one charge proximate the entry of a void. The charge is then armed as by connecting a detonator cord thereto and inserted into a void to a preselected depth from a remote location. An apparatus is provided for positioning the charges at preselected locations in the voids and includes insert means having a body member for releasably engaging the charges during the positioning operation. The insert means is driven until the body member and charge propelled thereby is moved to a preselected location within the void where the charge is deposited.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: March 27, 1984
    Assignee: Patent Development Ltd.
    Inventor: Leonard R. Nitzberg