GB987078A - - Google Patents

Info

Publication number
GB987078A
GB987078A GB4339563A GB4339563A GB987078A GB 987078 A GB987078 A GB 987078A GB 4339563 A GB4339563 A GB 4339563A GB 4339563 A GB4339563 A GB 4339563A GB 987078 A GB987078 A GB 987078A
Authority
GB
United Kingdom
Prior art keywords
bowl
valve
jack
passage
earthmoving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4339563A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US247056A priority Critical patent/US3127688A/en
Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB987078A publication Critical patent/GB987078A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/64Buckets cars, i.e. having scraper bowls
    • E02F3/65Component parts, e.g. drives, control devices
    • E02F3/652Means to adjust the height of the scraper bowls, e.g. suspension means, tilt control, earth damping control
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/64Buckets cars, i.e. having scraper bowls
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/64Buckets cars, i.e. having scraper bowls
    • E02F3/6454Towed (i.e. pulled or pushed) scrapers
    • E02F3/6481Towed (i.e. pulled or pushed) scrapers with scraper bowls with an ejector having translational movement for dumping the soil
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/64Buckets cars, i.e. having scraper bowls
    • E02F3/65Component parts, e.g. drives, control devices
    • E02F3/651Hydraulic or pneumatic drives; Electric or electro-mechanical control devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01Locking-valves or other detent i.e. load-holding devices

Abstract

987,078. Earth-moving equipment. CATERPILLAR TRACTOR CO. Nov. 4, 1963 [Dec. 26, 1962], No. 43395/63. Heading E1F. Positioned in a fluid passage to normally prevent flow through the passage between the head and rod ends of the or each jack 16 for raising and lowering the bowl of an earthmoving, bowl type scraper is a quick drop valve 86 allowing of rapid venting of the piston end of the cylinder when the bowl is lowered and in series with this valve is a check valve 65 for preventing accidental dropping of the bowl if the hydraulic fluid supply pipes to the jack are damaged. Specification 959,872 is referred to.
GB4339563A 1962-12-26 1963-11-04 Expired GB987078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US247056A US3127688A (en) 1962-12-26 1962-12-26 Hydraulic circuit for control of earthmoving scraper bowls

Publications (1)

Publication Number Publication Date
GB987078A true GB987078A (en) 1965-03-24

Family

ID=22933371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4339563A Expired GB987078A (en) 1962-12-26 1963-11-04

Country Status (3)

Country Link
US (1) US3127688A (en)
DE (1) DE1484636A1 (en)
GB (1) GB987078A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2450203A (en) * 2007-06-13 2008-12-17 Miller Uk Ltd Hydraulic ram for an excavator coupler
US8256148B2 (en) 2006-09-04 2012-09-04 Miller Uk Limited Coupler

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360875A (en) * 1965-07-27 1968-01-02 Gen Motors Corp Two speed hoist for earth-moving vehicle
US3438308A (en) * 1966-09-12 1969-04-15 Cascade Corp Hoist ram control apparatus
US3469861A (en) * 1967-11-22 1969-09-30 Caterpillar Tractor Co Hydraulic control circuit for push-pull coupling of tandem machines
US3653132A (en) * 1969-08-28 1972-04-04 Caterpillar Tractor Co Automatic positioning systems for scraper elevators
US3800670A (en) * 1969-10-21 1974-04-02 Caterpillar Tractor Co High pressure implement hydraulic circuit
US3728941A (en) * 1970-11-23 1973-04-24 Caterpillar Tractor Co Flow control valve
US3943825A (en) * 1972-04-17 1976-03-16 Caterpillar Tractor Co. Hydraulic control system for load supporting hydraulic motors
US4006667A (en) * 1972-04-17 1977-02-08 Caterpillar Tractor Co. Hydraulic control system for load supporting hydraulic motors
US3906840A (en) * 1972-04-17 1975-09-23 Caterpillar Tractor Co Hydraulic control system for load supporting hydraulic motors
US3788401A (en) * 1972-07-17 1974-01-29 Caterpillar Tractor Co Hydraulic circuit with valve to provide semi-float control of a dozer blade
US3947981A (en) * 1974-12-09 1976-04-06 International Harvester Company Scraper bowl with hydraulic safety lock
US4000683A (en) * 1975-05-27 1977-01-04 Caterpillar Tractor Co. Hydraulic load lifting system
US4088151A (en) * 1976-05-26 1978-05-09 Borg-Warner Corporation Cylinder locking apparatus
US4167892A (en) * 1977-04-07 1979-09-18 Caterpillar Tractor Co. Load check with mechanical venting means
US4165675A (en) * 1977-04-07 1979-08-28 Caterpillar Tractor Co. Load check valve cylinder mounted
US4130049A (en) * 1977-04-07 1978-12-19 Caterpillar Tractor Co. Vent control for cylinder mounted load check valves
US4278011A (en) * 1977-06-06 1981-07-14 J. I. Case Company Automatic hydraulic shut-off system
CH636932A5 (en) * 1979-06-22 1983-06-30 Sulzer Ag Safety circuit with a double-acting, fluid-operated servo motor.
US8316757B2 (en) * 2009-12-04 2012-11-27 Walvoil Fluid Power Corp. Hydraulic control valve assembly with monolithic body and single spool port lock

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897613A (en) * 1956-04-25 1959-08-04 Int Harvester Co Hydraulic carrying-lock for earth-working scrapers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8256148B2 (en) 2006-09-04 2012-09-04 Miller Uk Limited Coupler
US8448357B2 (en) 2006-09-04 2013-05-28 Miller Uk Limited Coupler
GB2450203A (en) * 2007-06-13 2008-12-17 Miller Uk Ltd Hydraulic ram for an excavator coupler
GB2450203B (en) * 2007-06-13 2012-04-18 Miller Uk Ltd Hydraulic ram for a coupler

Also Published As

Publication number Publication date
DE1484636A1 (en) 1969-10-23
US3127688A (en) 1964-04-07

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