Patents Assigned to Schwing America, Inc.
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Patent number: 6719118Abstract: The spacing device mounted to a two-section chute system prevents inadvertent contact between the two chute sections. The spacing device includes a mounting flange and a blocking member positionable between first and second pivotally attached chute sections of a concrete mixing truck. The first chute section comprises an annular flange that is configured to contact an arcuate edge of the second chute section. The mounting flange is connected to a second end of the first chute section and the blocking member is attached to the mounting flange. The blocking member comprises a contact surface that is configured to engage a portion of the arcuate edge of the second chute section when the spacing device is in a blocking position. In the blocking position, the spacing device holds the first and second chute sections in a partially open position to prevent unintended contact between the chute sections.Type: GrantFiled: September 24, 2002Date of Patent: April 13, 2004Assignee: Schwing America, Inc.Inventors: Thomas E. Eull, Charles Peter Schumacher
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Publication number: 20040055852Abstract: The spacing device mounted to a two-section chute system prevents inadvertent contact between the two chute sections. The spacing device includes a mounting flange and a blocking member positionable between first and second pivotally attached chute sections of a concrete mixing truck. The first chute section comprises an annular flange that is configured to contact an arcuate edge of the second chute section. The mounting flange is connected to a second end of the first chute section and the blocking member is attached to the mounting flange. The blocking member comprises a contact surface that is configured to engage a portion of the arcuate edge of the second chute section when the spacing device is in a blocking position. In the blocking position, the spacing device holds the first and second chute sections in a partially open position to prevent unintended contact between the chute sections.Type: ApplicationFiled: September 24, 2002Publication date: March 25, 2004Applicant: Schwing America, Inc.Inventors: Thomas E. Eull, Charles Peter Schumacher
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Patent number: 6698451Abstract: The invention is a placing boom comprising a plurality of boom sections connected together in an articulated arrangement. A pipeline is carried by the boom sections, wherein the pipeline is disposed inside at least one of the boom sections.Type: GrantFiled: January 9, 2002Date of Patent: March 2, 2004Assignee: Schwing America, Inc.Inventors: Thomas M. Anderson, Lawrence P. Schmidt, David R. Bissen, Brian E. Spencer, Leo B. Willner
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Patent number: 6604765Abstract: An improved bumper system includes a pair of brackets connected to the spaced frame members of a motor vehicle. A support arm is pivotally connected at one end to each of the brackets. The opposite end of each support arm is connected to a transverse beam that forms separate first and second bumper sections. The brackets support the support arms and bumper sections at a desired height above the ground. Each support arm is maintained relative to the respective bracket by gravity. A shear pin provides a redundant retention of the arm relative to the bracket. The arms and bumper sections of the improved bumper system remain in position relative to the bracket even in the event of a horizontal impact. A vertical impact of one or both bumper sections by obstacles or terrain causes the shear pin to be severed, allowing the bumper section(s) to pivot relative to the bracket, rather than to bend or deform.Type: GrantFiled: March 15, 2002Date of Patent: August 12, 2003Assignee: Schwing America, Inc.Inventor: Thomas E. Eull
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Publication number: 20030066659Abstract: An improved fire-fighting device designed to allow variable positioning of a quenching agent dispensing point. The fire-fighting device also allows high quenching agent flow rates. The device uses an articulable boom arrangement and solid pipeline to achieve these advantages.Type: ApplicationFiled: August 16, 2001Publication date: April 10, 2003Applicant: Schwing America, Inc.Inventors: David R. Bissen, William F. Burch, Lawrence P. Schmidt
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Publication number: 20020117219Abstract: The invention is a placing boom comprising a plurality of boom sections connected together in an articulated arrangement. A pipeline is carried by the boom sections, wherein the pipeline is disposed inside at least one of the boom sections.Type: ApplicationFiled: January 9, 2002Publication date: August 29, 2002Applicant: Schwing America, Inc.Inventors: Thomas M. Anderson, Lawrence P. Schmidt, David R. Bissen, Brian E. Spencer, Leo B. Willner
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Publication number: 20020112441Abstract: A support apparatus used with construction masts. The support apparatus comprises a truss and a top adjustable mount assembly secured to the truss. The top adjustable mount assembly is selectively positionable so as to engage the construction mast.Type: ApplicationFiled: January 9, 2002Publication date: August 22, 2002Applicant: Schwing America, Inc.Inventor: David R. Bissen
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Patent number: 6422840Abstract: A pump having both a short stroke pumping mode and a long stroke pumping mode. The pump has two material cylinders, each with an attached hydraulic cylinder for operating a piston rod extending through both the material and hydraulic cylinders. The piston rods are driven by hydraulic fluid supplied to the hydraulic cylinders and are synchronized so that as one piston rod extends, the other piston rod retracts. The piston rods draw material into the material cylinders when retracting, and pump material out of the material cylinders when extending. To pump in a short stroke mode, a diverter valve is placed between the hydraulic pump and the hydraulic cylinders which diverts an amount of hydraulic fluid to the cylinders, causing the hydraulic pistons to only be extended about half the length of the hydraulic cylinder.Type: GrantFiled: March 21, 2001Date of Patent: July 23, 2002Assignee: Schwing America, Inc.Inventors: Thomas M. Anderson, Enrique Gomez
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Patent number: 6375432Abstract: A method of detecting an air pocket in a concrete pump and minimizing the effect of the nozzle and boom reaction as the air pocket reaches the end of the boom. The hydraulic pressure of the pump is monitored to determine when a pump stroke contains air. Upon detection of air in a pump stroke, an alarm is sounded and the pump is slowed to minimize the effect of the air pocket when it reaches the nozzle of the boom.Type: GrantFiled: December 20, 2000Date of Patent: April 23, 2002Assignee: Schwing America, Inc.Inventors: Alexander Krasny, Thomas M. Anderson
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Patent number: 6351696Abstract: An automatic leveling system for a vehicle supporting an articulable boom system. The automatic leveling system uses a microprocessor to monitor various inputs indicative of the current position of the vehicle and generates electrical drive signals to control the amount of extension of various outriggers extending from the vehicle.Type: GrantFiled: September 10, 1999Date of Patent: February 26, 2002Assignee: Schwing America, Inc.Inventors: Alexander Krasny, William F. Burch
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Publication number: 20010031212Abstract: A pump having both a short stroke pumping mode and a long stroke pumping mode. The pump has two material cylinders, each with an attached hydraulic cylinder for operating a piston rod extending through both the material and hydraulic cylinders. The piston rods are driven by hydraulic fluid supplied to the hydraulic cylinders and are synchronized so that as one piston rod extends, the other piston rod retracts. The piston rods draw material into the material cylinders when retracting, and pump material out of the material cylinders when extending. To pump in a short stroke mode, a diverter valve is placed between the hydraulic pump and the hydraulic cylinders which diverts an amount of hydraulic fluid to the cylinders, causing the hydraulic pistons to only be extended about half the length of the hydraulic cylinder.Type: ApplicationFiled: March 21, 2001Publication date: October 18, 2001Applicant: Schwing America, Inc.Inventors: Thomas M. Anderson, Enrique Gomez
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Patent number: 6267571Abstract: A pump having both a short stroke pumping mode and a long stroke pumping mode. The pump has two material cylinders, each with an attached hydraulic cylinder for operating a piston rod extending through both the material and hydraulic cylinders. The piston rods are driven by hydraulic fluid supplied to the hydraulic cylinders and are synchronized so that as one piston rod extends, the other piston rod retracts. The piston rods draw material into the material cylinders when retracting, and pump material out of the material cylinders when extending. To pump in a short stroke mode, a diverter valve is placed between the hydraulic pump and the hydraulic cylinders which diverts an amount of hydraulic fluid to the cylinders, causing the hydraulic pistons to only be extended about half the length of the hydraulic cylinder.Type: GrantFiled: August 17, 1999Date of Patent: July 31, 2001Assignee: Schwing America, Inc.Inventors: Thomas M. Anderson, Enrique Gomez
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Patent number: 6202013Abstract: A monitoring system is provided for monitoring positioning and stability of an articulated boom system The articulated boom system includes an articulated boom, having one or more boom sections, extending from a base, along with one or more outriggers extending from the base. The monitoring system includes a load sensor placed on a leading end of the articulated boom, a boom position sensor placed on the leading end, an outrigger sensor placed on the outrigger(s) and a computer. The load sensor delivers a signal to the computer indicative of the load on the leading end The boom position sensor delivers information to the computer indicative of the position of the leading end with respect to the base. The outrigger sensor delivers a signal to the computer indicative of the extension of the outrigger(s) from the base. The computer determines the position of the articulated boom based upon the sensed position of the leading end.Type: GrantFiled: January 15, 1998Date of Patent: March 13, 2001Assignee: Schwing America, Inc.Inventors: Thomas M. Anderson, Alex Krasny, Phil Serre, Thomas Eggert, Robert Edwards
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Patent number: 5839883Abstract: A system and method is provided for controlling a materials handling system. The materials handling system preferably includes a feed system, a positive displacement pump and a disposal system. The feed system includes a material feeder, which in the preferred embodiment is a screw feeder driven by a drive, and a transition housing. The material feeder forces material through the transition housing to an inlet of the positive displacement pump. The control system includes a pressure sensor, located on the transition housing, connected to a computer. The computer is also connected to the drive of the screw feeder. During operation of the materials handling system, the pressure sensor senses a parameter indicative of material pressure within the transition housing and sends a signal to the computer representative of this parameter. The computer provides a control signal to the feed system to control operation of the materials handling system as a function of the sensed parameter.Type: GrantFiled: May 22, 1996Date of Patent: November 24, 1998Assignee: Schwing America, Inc.Inventors: Lawrence P. Schmidt, Harry K. Crow
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Patent number: 5557526Abstract: A system for and method of monitoring the operation of a boom are disclosed. A first parameter is sensed, the first parameter being indicative of a load on a first boom component. It is determined from the sensed first parameter when a load supported by the first boom component exceeds a predetermined value. Information, indicative of one or more occurrences of loads on the first boom component which exceed the predetermined value, is stored. Based upon the stored information, an output is provided which is indicative of whether a boom warranty is in effect.Type: GrantFiled: September 22, 1994Date of Patent: September 17, 1996Assignee: Schwing America, Inc.Inventor: Thomas M. Anderson
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Patent number: 5513671Abstract: A valve, to control the injection of lubricant into a viscous material pump pipeline is disclosed. The valve is operated off a parameter of the viscous material pump such as hydraulic fluid pressure from one or both differential/popper teed lines for the pump. The preferred valve includes coaxial water and hydraulic oil spools on opposing ends of a rod, and two hydraulic signals are used to control water flow through two outlets, to properly feed water to two lubricant injectors. Inlets and outlets of the valve are all located along one surface, and an intermediate chamber is provided to receive any leakage past the rod seals.Type: GrantFiled: July 13, 1994Date of Patent: May 7, 1996Assignee: Schwing America, Inc.Inventors: Ronald J. Cortopassi, Lawrence P. Schmidt, Robert W. Shallue, Roger N. Pearson
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Patent number: 5479957Abstract: A system for lubricating a plug flow of high viscosity material in a pipeline is disclosed. The system includes first and second pipes through which the plug flow of high viscosity material is pumped. The first pipe has a flange which is positioned adjacent a flange of the second pipe. A plurality of bolts, attached to the flange of the first pipe and to the flange of the second pipe, connect the first pipe to the second pipe. A lubrication spool is positionable in a first location between the flange of the first pipe and the flange of the second pipe for lubricating the plug flow of high viscosity material. The lubrication spool is removable from the first position without completely disconnecting the first and second pipes. The lubrication spool includes a first spool section which is located immediately adjacent the flange of the first pipe while in the first position and a second spool section immediately adjacent the first spool section.Type: GrantFiled: July 11, 1994Date of Patent: January 2, 1996Assignee: Schwing America, Inc.Inventors: Harry Crow, Thomas M. Anderson, Scott Kelly, Terry Atherton, Larry Schmidt
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Patent number: 5401140Abstract: A system and method for controlling operation of a sludge material handling system is disclosed. The sludge material handling system includes a positive displacement piston/cylinder pump, a sludge material feed system which delivers sludge material to the pump, and a sludge material disposal system which receives and disposes of sludge material from the pump. A first parameter is sensed, the first parameter bearing a known relationship to an actual volume of sludge material delivered during a pumping cycle. An output value is determined from the first parameter. A control signal is provided as a function of the output value.Type: GrantFiled: February 18, 1994Date of Patent: March 28, 1995Assignee: Schwing America, Inc.Inventor: Thomas M. Anderson
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Patent number: 5361797Abstract: A system for lubricating a plug flow of high viscosity material in a pipeline is disclosed. The system includes first and second pipes through which the plug flow of high viscosity material is pumped. The first pipe has a flange which is positioned adjacent a flange of the second pipe. A plurality of bolts, attached to the flange of the first pipe and to the flange of the second pipe, connect the first pipe to the second pipe. A lubrication spool is positionable in a first location between the flange of the first pipe and the flange of the second pipe for lubricating the plug flow of high viscosity material. The lubrication spool is removable from the first position without completely disconnecting the first and second pipes. The lubrication spool includes a first spool section which is located immediately adjacent the flange of the first pipe while in the first position and a second spool section immediately adjacent the first spool section.Type: GrantFiled: June 1, 1993Date of Patent: November 8, 1994Assignee: Schwing America, Inc.Inventors: Harry Crow, Thomas M. Anderson, Scott Kelly, Terry Atherton, Larry Schmidt
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Patent number: RE35473Abstract: A system for the transport of high solids sludge includes a positive displacement pump for pumping sludge through a pipeline. The volume of sludge transported is accurately measured by determining the fill percentage by using a material flow signal, measured time intervals, hydraulic fluid pressure, or hydraulic fluid flow rate during each pumping cycle.Type: GrantFiled: February 23, 1995Date of Patent: March 11, 1997Assignee: Schwing America, Inc.Inventors: Edward A. Oakley, Harry K. Crow, Thomas M. Anderson, Richard T. Atherton, Berthold A. Fehn