Patents by Inventor Robert A. Doll
Robert A. Doll 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).
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Patent number: 10156054Abstract: An industrial machine includes a frame supporting a boom having a first end and a second end opposite the first end, an arm movably coupled to the boom and including a first end and a second end, an attachment coupled to the first end of the arm, a conduit extending from the frame to a position adjacent the attachment, a first member coupled to the boom, and a second member spaced apart from the first member. The first member supports a portion of the conduit as the arm moves relative to the boom. The second member supports a portion of the conduit as the arm moves relative to the boom. The second member is movable relative to the first member.Type: GrantFiled: May 4, 2016Date of Patent: December 18, 2018Assignee: Joy Global Surface Mining IncInventors: Robert Doll, Christopher S. Jones, Jesse Knoble, Matthew Loew, Douglas Maki
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Patent number: 9981208Abstract: A cyclone reservoir for separation of an aerated portion of a hydraulic fluid and a related method of making the cyclone reservoir. The cyclone reservoir includes a lower chamber having a generally cylindrical side wall, a return port, and a suction port. An upper chamber is connected to the lower chamber by a neck section that places the interior volumes of the lower and upper chambers in fluid communication with one another. The neck section has a cross-sectional area taken perpendicular to a central axis of the reservoir that is smaller than a cross-sectional area of the lower chamber and the upper chamber at a different position along the central axis. The chambers and neck section may be made as a single-piece part by molding the reservoir by, for example, rotomolding. A reinforcement band may also go around the neck section to connect and support the upper and lower chambers.Type: GrantFiled: September 16, 2014Date of Patent: May 29, 2018Assignee: Price Engineering Company, LLCInventor: Robert A. Doll
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Publication number: 20160244938Abstract: An industrial machine includes a frame supporting a boom having a first end and a second end opposite the first end, an arm movably coupled to the boom and including a first end and a second end, an attachment coupled to the first end of the arm, a conduit extending from the frame to a position adjacent the attachment, a first member coupled to the boom, and a second member spaced apart from the first member. The first member supports a portion of the conduit as the arm moves relative to the boom. The second member supports a portion of the conduit as the arm moves relative to the boom. The second member is movable relative to the first member.Type: ApplicationFiled: May 4, 2016Publication date: August 25, 2016Inventors: Robert Doll, Christopher S. Jones, Jesse Knoble, Matthew Loew, Douglas Maki, Bernard Pusheck
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Patent number: 9279229Abstract: An industrial machine includes a frame supporting a fluid source and a boom, an arm, an attachment coupled to the arm, a cylinder, and a rod. The arm is movably coupled to the boom for translational and rotational movement relative to the boom. The cylinder includes a first end and a second end, and the cylinder defines an internal bore in fluid communication with the fluid source. The rod is coupled to the arm and is slidably received within the cylinder. The rod includes a port and a passage for providing fluid to the attachment. The port provides fluid communication between the internal bore and the passage. The port is positioned within the internal bore throughout the entire range of movement of the rod relative to the cylinder.Type: GrantFiled: October 18, 2013Date of Patent: March 8, 2016Assignee: Harnischfeger Technologies, Inc.Inventors: Robert Doll, Christopher S. Jones, Jesse Knoble, Matthew Loew, Russell Luzinski, Daniel Schlegel
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Publication number: 20150075383Abstract: A cyclone reservoir for separation of an aerated portion of a hydraulic fluid and a related method of making the cyclone reservoir. The cyclone reservoir includes a lower chamber having a generally cylindrical side wall, a return port, and a suction port. An upper chamber is connected to the lower chamber by a neck section that places the interior volumes of the lower and upper chambers in fluid communication with one another. The neck section has a cross-sectional area taken perpendicular to a central axis of the reservoir that is smaller than a cross-sectional area of the lower chamber and the upper chamber at a different position along the central axis. The chambers and neck section may be made as a single-piece part by molding the reservoir by, for example, rotomolding. A reinforcement band may also go around the neck section to connect and support the upper and lower chambers.Type: ApplicationFiled: September 16, 2014Publication date: March 19, 2015Applicant: PRICE ENGINEERING CO., INC.Inventor: Robert A. Doll
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Publication number: 20140112748Abstract: An industrial machine includes a frame supporting a fluid source and a boom, an arm, an attachment coupled to the arm, a cylinder, and a rod. The arm is movably coupled to the boom for translational and rotational movement relative to the boom. The cylinder includes a first end and a second end, and the cylinder defines an internal bore in fluid communication with the fluid source. The rod is coupled to the arm and is slidably received within the cylinder. The rod includes a port and a passage for providing fluid to the attachment. The port provides fluid communication between the internal bore and the passage. The port is positioned within the internal bore throughout the entire range of movement of the rod relative to the cylinder.Type: ApplicationFiled: October 18, 2013Publication date: April 24, 2014Applicant: Harnischfeger Technologies, Inc.Inventors: Robert Doll, Christopher S. Jones, Jesse Knoble, Matthew Loew, Russell Luzinski, Daniel Schlegel
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Publication number: 20140112749Abstract: An industrial machine includes a frame supporting a boom having a first end and a second end opposite the first end, an arm movably coupled to the boom and including a first end and a second end, an attachment coupled to the first end of the arm, a conduit extending from the frame to a position adjacent the attachment, a first member coupled to the boom, and a second member spaced apart from the first member. The first member supports a portion of the conduit as the arm moves relative to the boom. The second member supports a portion of the conduit as the arm moves relative to the boom. The second member is movable relative to the first member.Type: ApplicationFiled: October 18, 2013Publication date: April 24, 2014Inventors: Robert Doll, Christopher S. Jones, Jesse Knoble, Matthew Loew, Douglas Maki, Bernard Pusheck
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Publication number: 20120124989Abstract: A hydraulic power unit is disclosed that is selectively connectable to a hydraulic tool. The hydraulic power unit automatically detects the attached or detached state of the tool and/or operates an unloading valve during activation of the tool.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Inventors: Robert A. Doll, John G. Steidtman, William R. Reuter, III
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Publication number: 20110119123Abstract: Systems and methods provide incentives to a stimulative visual therapy user performing computer based visual therapy. User compliance with a recommended schedule of visual therapy is recorded, reward points are provided to the user based on compliance, and the user is rewarded based on the number of accumulated reward points awarded to the user.Type: ApplicationFiled: September 16, 2010Publication date: May 19, 2011Inventors: Navroze Mehta, Robert Doll, Sigrid Kenkel, David Furshpan, Michelle Boster
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Patent number: 7694772Abstract: This invention of a “FORWARD CAB ARTICULATED TRACTOR” comprises a front cab section and an articulating joint attached to the rear of the front cab section and a rear section attached to the rear of the articulated joint with the front of the rear section attached to the rear section of the articulated joint and a gas driven internal combustion engine mounted in the rear section of the forward cab articulated tractor, and the gas driven engine connected to drive a hydraulic fluid pump to provide hydraulic fluid to a manifold and the manifold to supply hydraulic fluid to lines connected to disc brakes and to steer the forward cab articulated tractor by activating hydraulic fluid from the manifold to cylinders attached to the articulated joint and to the rear of front cab section. The front wheels are provided with brakes activated by hydraulic fluid from the manifold and the brakes are further activated by a spring loaded cylinder which is activated by shut off of hydraulic fluid from the manifold.Type: GrantFiled: June 16, 2008Date of Patent: April 13, 2010Assignee: M-B Companies Inc.Inventor: Robert A. Doll
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Publication number: 20080077437Abstract: Systems and methods provide incentives to a stimulative visual therapy user performing computer based visual therapy. User compliance with a recommended schedule of visual therapy is recorded, reward points are provided to the user based on compliance, and the user is rewarded based on the number of accumulated reward points awarded to the user.Type: ApplicationFiled: July 24, 2007Publication date: March 27, 2008Applicant: NOVAVISION, INC.Inventors: Navroze Mehta, Robert Doll, Sigrid Kenkel, David Furshpan, Michelle Boster
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Patent number: 6250612Abstract: A ram (10) with a hydraulic cylinder (22) and piston (52) has an electronics enclosure compartment (54) integrated within it at one end. The compartment (54) is formed by two clam shells (70, 72) which are bolted to the end of the cylinder (22) so as to create a chamber for housing the electronics (66). The outer clam shell (72) has an axially aligned ram mounting attachment (74) integrally formed on it, and the inner clam shell (70) has an axial opening to which is sealed a hollow tube (56) which extends axially within the ram (10) so as to enclose a sensor (60) which is associated with the electronics (66) in the compartment (54).Type: GrantFiled: March 2, 1999Date of Patent: June 26, 2001Assignee: Actuant CorporationInventor: Robert A. Doll
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Patent number: 6213485Abstract: A load distribution unit for a hydraulic vehicle suspension system has a pair of cylinders with each cylinder defined by a block which is common to the cylinders and four cylinder sleeves, two sleeves for each cylinder extending from opposite sides of the block. The sleeves are fixed to the block by an end cap for each sleeve, with fasteners extending from the end cap to the block to compress the associated sleeve between the end cap and the block and estalish a seal between the block and the sleeve and the end cap and the sleeve. The LDU is mounted to the vehicle with a three point mounting, and with the cylinder sleeve cantilevered from the block. A clam shell compartment is mounted and sealed to one of the end caps of each cylinder, which is covered so that its interior is accessible without breaking the seal of the clam shell compartment with the end cap.Type: GrantFiled: March 26, 1999Date of Patent: April 10, 2001Assignee: Applied Power Inc.Inventors: Robert A. Doll, Timothy J. Abhold, Terence A. Bucheger
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Patent number: 6148862Abstract: A valve bank has a coil pack assembly with multiple solenoid coils bound to one another by a single resin body. An L-shaped magnetic (but not magnetized) bracket is also bound within the body and extends between upper pole pieces of the valves and the manifold in which the valves are mounted. A retainer plate holds the valves in the manifold, and helps complete the magnetic flux path circuit from the manifold end of the bracket to the lower pole pieces of the valves. A spring clip helps position the manifold end of the bracket close to the retainer plate. A circuit board for individually energizing the coils is also potted within the resin body.Type: GrantFiled: March 2, 1999Date of Patent: November 21, 2000Assignee: Applied Power Inc.Inventor: Robert A. Doll
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Patent number: 5887621Abstract: A bidirectional on/off spool valve has circumferentially-extending through-slots in a spool which are axially alignable with circumferentially-extending grooves in the main bore. The slots and grooves create a flow path through the valve which minimizes Bernoulli forces that tend to close the valve or create negative Bernoulli forces which help keep the valve open. The spool has a stop wall at its closed end which restricts the open area of the lumen of the spool and a balance tube extends forwardly from the stop wall to equalize the pressure behind the stop wall with the pressure in front of the stop wall, so that the spool is not locked in the open position.Type: GrantFiled: April 10, 1996Date of Patent: March 30, 1999Assignee: Applied Power Inc.Inventor: Robert A. Doll
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Patent number: 5727591Abstract: A rotary indexing valve has an electromagnetic coil which shuttles a spoil axially. As the spool shuttles axially, it cams on axially opposed surfaces so as to rotatably index the spool. Such rotatable indexing of the spool angularly positions different sized orifices into or out of registration with one of the ports in the housing to change the cross sectional area of the flow passage between the inlet and outlet ports of the housing. One of the cam surfaces is defined by an alternating series of peaks and valleys, and the valleys are at different heights so as to change the spacing between the spool and a pole piece, which varies the inductance of the coil dependent on the angular position of the spool. The inductance of the coil can therefore be measured to provide an electrical signal indicative of the angular position of the spool.Type: GrantFiled: December 7, 1995Date of Patent: March 17, 1998Assignee: Applied Power Inc.Inventor: Robert A. Doll
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Patent number: 5540412Abstract: An electro-magnetically operated bidirectional two-way air valve capable of changing state at high pressure differentials or high flow rates in either direction has a body which defines a main bore in which an armature is slidably received. The body has a first port and a second port with a seat between them formed at the end of the main bore and a plastic valve element is secured to a neck portion of the armature to seat against the seat when the valve is closed. Frusto-conical surfaces are formed on the valve element and on the neck portion and a transversely extending pin across the main bore retains the armature in the main bore. In a second embodiment, an end of the armature tapers so as to reduce drag, a powder metal flow restrictor is provided in an axial bore in the armature to reduce shift speed and an elastomer bumper is provided to reduce operating noise.Type: GrantFiled: September 5, 1995Date of Patent: July 30, 1996Assignee: Applied Power Inc.Inventor: Robert A. Doll
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Patent number: 4948348Abstract: An immersion pump, especially for low-boiling fluids, having a support for a shaft and a ferromagnetic impeller wheel mounted to the shaft. The support includes at least one controllable electromagnet that operates to axially support and position the impeller wheel. An outlet path is also provided to enable vapor bubbles within the moving fluid to escape from the pump and be returned to the liquid supply.Type: GrantFiled: May 4, 1988Date of Patent: August 14, 1990Inventors: Robert Doll, Werner Wiedemann, Hartmut Berndt
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Patent number: D550722Type: GrantFiled: December 13, 2006Date of Patent: September 11, 2007Assignee: M-B Companies, Inc.Inventor: Robert A. Doll