1
Bernard C Einstein, Peter Spring: Method of and apparatus for machining large numbers of holes of precisely controlled size by coherent radiation. Lasag, Wegner Stellman McCord Wiles & Wood, December 26, 1978: US04131782 (46 worldwide citation)

A method of and apparatus for machining an object wherein a source of coherent radiation is pulse modulated in accordance with the desired machining and the radiation is directed to a deflecting device and deflected to the object which is moving at a controlled speed. Movement of the deflecting devi ...


2
Jiao Zhang, Tonglin Shang, Peter Spring, Pengfei Ma, Randal N Peterson: Hydraulic control system having swing motor energy recovery. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, October 7, 2014: US08850806 (10 worldwide citation)

A hydraulic control system for a machine is disclosed. The hydraulic control system may have a work tool movable through segments of an excavation cycle, a motor configured to swing the work tool during the excavation cycle, at least one accumulator configured to selectively receive fluid discharged ...


3
Bryan A Johnson, Jason L Brinkman, Lawrence J Tognetti, Chris R Cesur, Peter Spring, Jiao Zhang: Hydraulic system having implement and steering flow sharing. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, June 24, 2014: US08756930 (5 worldwide citation)

A hydraulic system for a machine is disclosed. The hydraulic system may have a first pump with variable displacement and being load-sense controlled, and a first hydraulic circuit associated with the first pump. The hydraulic system may also have a second pump with variable displacement and being el ...


4
Pengfei Ma, Jiao Zhang, Tonglin Shang, Peter Spring, Dayao Chen, Salik A Syed, John Ferraz Jr, Randal N Peterson: Hydraulic control system having energy recovery kit. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, December 30, 2014: US08919113 (3 worldwide citation)

An energy recovery retrofit kit for a hydraulic control system is disclosed. The energy recover retrofit kit may have a first accumulator and a second accumulator. The energy recover retrofit kit may also have a recovery valve block fluidly connectable between an existing pump and an existing motor ...


5
Jiao Zhang, Tonglin Shang, Peter Spring, Pengfei Ma, Randal N Peterson, Rustu Cesur: Hydraulic control system having swing motor energy recovery. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, June 30, 2015: US09068575 (2 worldwide citation)

A hydraulic control system for a machine is disclosed. The hydraulic control system may have a work tool movable to perform an excavation cycle having a plurality of segments, a motor configured to swing the work tool during the excavation cycle, and a pump configured to pressurize fluid directed to ...


6
Bryan J Hillman, Jiao Zhang, Lawrence C Tognetti, Peter Spring, Rustu Cesur, Tonglin Shang: Hydraulic control system having swing motor energy recovery. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, July 12, 2016: US09388828 (1 worldwide citation)

A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, a swing motor, and at least one control. The hydraulic control system may further have an accumulator configured to receive fluid from and supply fluid to the swing motor, a charge v ...


7
Lino Guzzella, Christopher Onder, Martin Rauscher, Peter Spring: Method of operating an engine with a pressure-wave supercharger. Robert Bosch, Kenyon & Kenyon, March 2, 2010: US07669587 (1 worldwide citation)

In an internal combustion engine, fresh air is compressed by a pressure-wave supercharger. At least one operating parameter of the pressure-wave supercharger is controlled or regulated as a function of at least one actual operating variable of the internal combustion engine.


8
Jiao Zhang, Pengfei Ma, Tonglin Shang, Rustu Cesur, Bryan J Hillman, Peter Spring, Lawrence J Tognetti, Randal N Peterson, Dayao Chen: Hydraulic control system having swing motor recovery. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, July 21, 2015: US09086081

A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, a swing motor, and at least one control valve configured to control fluid flow between the pump, the swing motor, and the tank. The hydraulic system may also have an accumulator conf ...


9
Rustu Cesur, Jiao Zhang, Tonglin Shang, Bryan J Hillman, Peter Spring, Lawrence J Tognetti, Pengfei Ma: Hydraulic control system having electronic flow limiting. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, July 28, 2015: US09091286

A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, an actuator, and a control valve configured to direct fluid from the pump to the actuator and from the actuator to the tank. The hydraulic control system may also have a pressure sen ...


10
Urban M├Ąder, Andrea Boris Schlapbach, Peter Spring: Operator drowsiness detection in surface mines. SAFEMINE, Marshall Gerstein & Borun, November 7, 2017: US09809115

A method for deriving a fatigue score (100) indicative of a current drowsiness state of an operator (1) measures a plurality of signals (10, 20, 30, 40, 50, 60, 70, 80, 90) and derives a personalized fatigue score (100) for the operator using these signals (10, 20, 30, 40, 50, 60, 70, 80, 90) in a w ...