-
公开(公告)号：US3444968A
公开(公告)日：1969-05-20
申请号：US3444968D
申请日：1968-02-07
Applicant: CATERPILLAR TRACTOR CO
Inventor： GOLAN KENNETH F , OHAVER DAVID S , PEARCE SHAIRYL I , ROHWEDER GERALD D
CPC classification number: F16H61/0274 , F16H61/065 , F16H61/16 , F16H61/18 , F16H2059/088
-
公开(公告)号：US3468194A
公开(公告)日：1969-09-23
申请号：US3468194D
申请日：1967-05-10
Applicant: CATERPILLAR TRACTOR CO
Inventor： HORSCH JOACHIM , OHAVER DAVID S
CPC classification number: F16H61/065 , F16H61/0262 , F16H2716/06
-
Patent Agency Ranking
公开(公告)号：US3570522A
公开(公告)日：1971-03-16
申请号：US3570522D
申请日：1969-02-10
Applicant: CATERPILLAR TRACTOR CO
Inventor： HORSCH JOACHIM , OHAVER DAVID S
CPC classification number: F16H61/065 , F16H61/0262 , F16H2716/06 , Y10T137/2579 , Y10T137/2605 , Y10T137/7781 , Y10T137/7788
Abstract: A hydraulic transmission control system, having speed selector valves for providing hydraulic fluid to selectively actuate speed and directional gear clutches and a pressure modulating valve for modulating pressure rise of hydraulic fluid, to control fluid pressure and fluid flow. A differential valve associated therein and having differential fluid pressure regulator means to provide fluid to the directional selector valve at a differentially constant lower pressure compared with main rail fluid pressure, the differential valve also having: a safety reset valve and safety react delay orifice for preventing actuation of a directional gear clutch after a startup with the controls inadvertently out of neutral gear; quick dumping check valve means for insuring proper operation of the pressure modulation valve; modulating valve means for eliminating or reducing hydraulic fluid pressure peaks; and throttle means for reducing refilling time for the directional gear clutches. The above combination provides a preferred environment for a modulating valve in a transmission control system, the modulating valve including a load piston and spool reciprocably arranged in a bore with spring means interacting between the spool and load piston, a pressure modulating chamber being formed in the bore on one side of the load piston, the load piston and bore cooperating to form a relief passage in combination with the modulating chamber upon modulation of fluid in the chamber to a selected pressure.
-
公开(公告)号：US3487851A
公开(公告)日：1970-01-06
申请号：US3487851D
申请日：1968-02-07
Applicant: CATERPILLAR TRACTOR CO
Inventor： GOLAN KENNETH F , OHAVER DAVID S , PEARCE SHAIRYL I , ROHWEDER GERALD D
IPC: F16H47/08 , F16H61/02 , F16K31/163 , E02F3/84 , F16K17/04
CPC classification number: F16H47/08 , F16H61/0262 , F16H2716/06 , Y10T137/7781
-
公开(公告)号：US3465851A
公开(公告)日：1969-09-09
申请号：US3465851D
申请日：1967-02-20
Applicant: CATERPILLAR TRACTOR CO
Inventor： CALLEGARI WILLIAM A , MATTHEWS RALPH W , OHAVER DAVID S , PEARCE SHAIRYL I , ROHWEDER GERALD D
CPC classification number: F15B21/00 , G05G7/14 , Y10T74/20085
-
公开(公告)号：US3444762A
公开(公告)日：1969-05-20
申请号：US3444762D
申请日：1968-02-07
Applicant: CATERPILLAR TRACTOR CO
Inventor： GOLAN KENNETH F , OHAVER DAVID S , PEARCE SHAIRYL I , ROHWEDER GERALD D
CPC classification number: F16H61/18 , F15B20/00 , F16H61/0262 , F16H61/0274 , F16H61/065 , F16H2059/088 , F16H2716/04 , F16H2716/06
-
公开(公告)号：US3389770A
公开(公告)日：1968-06-25
申请号：US52398066
申请日：1966-02-01
Applicant: CATERPILLAR TRACTOR CO
Inventor： GOLAN KENNETH F , OHAVER DAVID S , PEARCE SHAIRYL I , ROHWEDER GERALD D
IPC: F16H63/02 , F16H47/08 , F16H59/08 , F16H61/02 , F16H61/06 , F16H61/08 , F16H61/18 , F16H61/686 , F16H63/12 , F16H63/24 , F16H63/34
CPC classification number: F16H61/068 , F16H61/0267 , F16H61/686 , F16H2059/088 , F16H2200/0043 , F16H2200/0091 , F16H2200/201 , F16H2200/2023 , F16H2200/2046 , Y10S74/01
-
-
-
-
-
-
Search Results
7
records
(took 0.013 seconds)
