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公开(公告)号：US20200340577A1
公开(公告)日：2020-10-29
申请号：US16396219
申请日：2019-04-26
Applicant: Caterpillar Inc.
Inventor： Brian E. Lister , Gaurav Vasudeva , Konrad Garrett , Aaron B. Crabtree , Michael Beyer
Abstract: A transmission for a machine is disclosed. The transmission may comprise a torque path providing a path for transmission of torque from an input shaft to an output shaft, and a single clutch element along the torque path. The transmission may further comprise a clutch actuator configured to actuate engagement of the clutch element, and a clutch pressure control (CPC) valve configured to permit a flow of hydraulic fluid to the clutch actuator through a control pressure line when in an open position to cause the clutch actuator to actuate engagement of the clutch element. The transmission may further comprise a failure mode response (FMR) valve in the control pressure line between the CPC valve and the clutch actuator. The FMR valve may have a failure position obstructing flow of the hydraulic fluid from the CPC valve to the clutch actuator when the CPC valve is in the open position.
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公开(公告)号：US10801612B1
公开(公告)日：2020-10-13
申请号：US16396219
申请日：2019-04-26
Applicant: Caterpillar Inc.
Inventor： Brian E. Lister , Gaurav Vasudeva , Konrad Garrett , Aaron B. Crabtree , Michael Beyer
Abstract: A transmission for a machine is disclosed. The transmission may comprise a torque path providing a path for transmission of torque from an input shaft to an output shaft, and a single clutch element along the torque path. The transmission may further comprise a clutch actuator configured to actuate engagement of the clutch element, and a clutch pressure control (CPC) valve configured to permit a flow of hydraulic fluid to the clutch actuator through a control pressure line when in an open position to cause the clutch actuator to actuate engagement of the clutch element. The transmission may further comprise a failure mode response (FMR) valve in the control pressure line between the CPC valve and the clutch actuator. The FMR valve may have a failure position obstructing flow of the hydraulic fluid from the CPC valve to the clutch actuator when the CPC valve is in the open position.
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Patent Agency Ranking
公开(公告)号：US20190178307A1
公开(公告)日：2019-06-13
申请号：US15837079
申请日：2017-12-11
Applicant: Caterpillar Inc.
Inventor： Konrad Garrett , Heath Toennies
IPC: F16D25/12
Abstract: A hydraulic clutch assembly includes a rotating shaft. A first clutch and a second clutch are coupled to the shaft. A first passageway located within the shaft supplies an actuating fluid to the first clutch. A second passageway located within the shaft supplies the actuating fluid to the second clutch. A first bleed passage is fluidly coupled with the first passageway. A second bleed passage is fluidly coupled to the second passageway and the first bleed passage. A first outlet is fluidly coupled to the first bleed passage. A second outlet is fluidly coupled to the second bleed passage. The first outlet and the second outlet merge together to form an outlet passage.
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公开(公告)号：US10544840B2
公开(公告)日：2020-01-28
申请号：US15837079
申请日：2017-12-11
Applicant: Caterpillar Inc.
Inventor： Konrad Garrett , Heath Toennies
Abstract: A hydraulic clutch assembly includes a rotating shaft. A first clutch and a second clutch are coupled to the shaft. A first passageway located within the shaft supplies an actuating fluid to the first clutch. A second passageway located within the shaft supplies the actuating fluid to the second clutch. A first bleed passage is fluidly coupled with the first passageway. A second bleed passage is fluidly coupled to the second passageway and the first bleed passage. A first outlet is fluidly coupled to the first bleed passage. A second outlet is fluidly coupled to the second bleed passage. The first outlet and the second outlet merge together to form an outlet passage.
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公开(公告)号：US10427670B2
公开(公告)日：2019-10-01
申请号：US16130639
申请日：2018-09-13
Applicant: Caterpillar Inc.
Inventor： Gaurav Vasudeva , Konrad Garrett , Justin R. Bailey
IPC: F16H47/04 , B60W20/10 , B60W10/04 , F16H61/421 , B60K6/12 , B60W10/103 , B60W10/20 , B60K6/543 , B60W10/101 , F16H61/44
Abstract: A continuously variable transmission includes two planetary gear sets having two planetary outputs and a planetary output shaft with a first drive gear. A variator drives a ring gear of the second planetary gear set, and a transmission input shaft is driven by the engine, which also drives the variator and the planetary input. Forward and reverse output systems are connected to the planetary output shaft and a transmission output shaft. A first clutch connects the first planetary output to the first drive gear, and a second clutch connects the second planetary output to the first drive gear. A third clutch connects the second planetary output to a second drive gear of the planetary output shaft, with the second drive gear being connected to the forward output system.
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公开(公告)号：US11174905B1
公开(公告)日：2021-11-16
申请号：US17101173
申请日：2020-11-23
Applicant: Caterpillar Inc.
Inventor： Konrad Garrett , Aaron Benjamin Crabtree , Michael David Beyer , Gaurav Vasudeva , Brian Eugene Lister
Abstract: A transmission for a machine is disclosed. The transmission may comprise a first torque path for transmission of torque from an input shaft to an output shaft, and a single clutch element along the first torque path. The transmission may further comprise a clutch actuator configured to actuate engagement of the clutch element, and a clutch pressure control (CPC) valve configured to permit a flow of hydraulic fluid to the clutch actuator when in an open position to cause the clutch actuator to actuate engagement of the clutch element. The transmission may further comprise a FMR valve having a failure position obstructing flow of the hydraulic fluid from the CPC valve to the clutch actuator when the CPC valve is in the open position. The FMR valve actuated by pilot pressure from a CPC valve that controls actuation of other clutch elements that are not on the first torque path.
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公开(公告)号：US20190009772A1
公开(公告)日：2019-01-10
申请号：US16130639
申请日：2018-09-13
Applicant: Caterpillar Inc.
Inventor： Gaurav Vasudeva , Konrad Garrett , Justin R. Bailey
IPC: B60W20/10 , F16H61/421 , F16H47/04 , B60K6/543 , B60W10/101 , B60W10/04
CPC classification number: B60W20/10 , B60K6/12 , B60K6/543 , B60W10/04 , B60W10/101 , B60W10/103 , B60W10/20 , B60W2300/17 , B60W2710/09 , B60W2710/105 , B60Y2400/72 , F16H47/04 , F16H61/421 , F16H61/44 , F16H2047/045 , Y02T10/6208 , Y02T10/6282 , Y10S903/918
Abstract: A continuously variable transmission includes two planetary gear sets having two planetary outputs and a planetary output shaft with a first drive gear. A variator drives a ring gear of the second planetary gear set, and a transmission input shaft is driven by the engine, which also drives the variator and the planetary input. Forward and reverse output systems are connected to the planetary output shaft and a transmission output shaft. A first clutch connects the first planetary output to the first drive gear, and a second clutch connects the second planetary output to the first drive gear. A third clutch connects the second planetary output to a second drive gear of the planetary output shaft, with the second drive gear being connected to the forward output system.
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