CA1030110A - Self-leveling system for material handling implement - Google Patents

Self-leveling system for material handling implement

Info

Publication number: CA1030110A
Authority: CA; Canada
Prior art keywords: self; material handling; leveling system; handling implement; implement
Prior art date: 1975-06-23
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

CA248,474A

Other languages

French (fr)

Inventor

Donald J. Parquet

Carl O. Pedersen

Marvin L. Brown

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.)

Case LLC

Original Assignee

JI Case 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.)

1975-06-23

Filing date

1976-03-22

Publication date

1978-04-25

1976-03-22 Application filed by JI Case Co filed Critical JI Case Co

1978-04-25 Application granted granted Critical

1978-04-25 Publication of CA1030110A publication Critical patent/CA1030110A/en

Status Expired legal-status Critical Current

Links

Classifications

- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
- E02F3/431—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like
- E02F3/432—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude
- E02F3/433—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude horizontal, e.g. self-levelling

CA248,474A 1975-06-23 1976-03-22 Self-leveling system for material handling implement Expired CA1030110A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/589,439 US3987920A (en)	1975-06-23	1975-06-23	Self-leveling system for material handling implement

Publications (1)

Publication Number	Publication Date
CA1030110A true CA1030110A (en)	1978-04-25

Family

ID=24358029

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA248,474A Expired CA1030110A (en)	1975-06-23	1976-03-22	Self-leveling system for material handling implement

Country Status (9)

Country	Link
US (1)	US3987920A (en)
JP (1)	JPS523203A (en)
AU (1)	AU497970B2 (en)
BR (1)	BR7603993A (en)
CA (1)	CA1030110A (en)
DE (1)	DE2626244A1 (en)
ES (1)	ES446771A1 (en)
FR (1)	FR2315574A1 (en)
GB (1)	GB1535284A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2834480C2 (en) *	1978-08-05	1986-01-02	Baas Technik GmbH, 2000 Wedel	Control device of a shovel loader or the like.
US4354797A (en) *	1979-05-31	1982-10-19	Hitachi Construction Machinery Co., Ltd.	Front loading hydraulic excavator
JPS5635806A (en) *	1979-09-01	1981-04-08	Sanyo Kiki Kk	Compound oil pressure circuit
US4353289A (en) *	1980-05-29	1982-10-12	Sperry Corporation	Power transmission
US4372729A (en) *	1980-07-21	1983-02-08	Veda, Inc.	Tilt control
US4408518A (en) *	1981-03-17	1983-10-11	The Cessna Aircraft Company	Series self-leveling valve
WO1993013319A1 (en) *	1982-10-25	1993-07-08	Blake William W	Fluid control for two independent actuators
US4802537A (en) *	1985-09-20	1989-02-07	Caterpillar Inc.	Control circuit for positioning and tilting an earthmoving blade
US4709618A (en) *	1985-10-02	1987-12-01	The Cessna Aircraft Company	Series self-leveling valve with single spool for unloading and relief
US4923362A (en) *	1988-06-06	1990-05-08	Deere & Company	Bucket leveling system with dual fluid supply
JPH03223508A (en) *	1990-01-30	1991-10-02	Mitsubishi Heavy Ind Ltd	Sequence valve
US5860233A (en) *	1997-04-14	1999-01-19	Caterpillar Inc.	Valve configuration and mounting arrangement
GB2327076A (en) *	1997-07-08	1999-01-13	Bamford Excavators Ltd	Hydraulic crowd mechanisms
US6099236A (en) *	1997-12-05	2000-08-08	Caterpillar Inc.	Apparatus for controlling movement of an implement relative to a frame of a work machine
KR20210126722A (en)	2019-02-22	2021-10-20	클라크 이큅먼트 컴파니	Hydraulic leveling circuit for power machinery

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2988891A (en) *	1959-06-17	1961-06-20	American Ind Company	Hydraulically responsive control system
FR1285065A (en) *	1961-03-29	1962-02-16		Device for controlling the lifting and tilting movement of the excavator of a front loader
US3175580A (en) *	1962-02-09	1965-03-30	Cessna Aircraft Co	Control valve for at least two hydraulic motors
FR1351671A (en) *	1963-02-08	1964-02-07	Cessna Aircraft Co	Control valve for one motor
US3563137A (en) *	1969-06-30	1971-02-16	Cessna Aircraft Co	Hydraulic self-leveling control for boom and bucket
US3650425A (en) *	1970-06-12	1972-03-21	Sperry Rand Corp	Bucket loader control system

1975
- 1975-06-23 US US05/589,439 patent/US3987920A/en not_active Expired - Lifetime
1976
- 1976-03-22 CA CA248,474A patent/CA1030110A/en not_active Expired
- 1976-04-07 JP JP51039135A patent/JPS523203A/en active Pending
- 1976-04-07 ES ES446771A patent/ES446771A1/en not_active Expired
- 1976-05-05 AU AU13646/76A patent/AU497970B2/en not_active Expired
- 1976-06-10 DE DE19762626244 patent/DE2626244A1/en not_active Withdrawn
- 1976-06-21 BR BR7603993A patent/BR7603993A/en unknown
- 1976-06-21 FR FR7618797A patent/FR2315574A1/en active Pending
- 1976-06-23 GB GB26154/76A patent/GB1535284A/en not_active Expired

Also Published As

Publication number	Publication date
GB1535284A (en)	1978-12-13
ES446771A1 (en)	1977-06-01
AU1364676A (en)	1977-11-10
FR2315574A1 (en)	1977-01-21
DE2626244A1 (en)	1977-01-20
AU497970B2 (en)	1979-01-25
BR7603993A (en)	1977-03-22
US3987920A (en)	1976-10-26
JPS523203A (en)	1977-01-11

Publication	Publication Date	Title
AU1220876A (en)	1977-09-22	Improved biological material
AU501958B2 (en)	1979-07-05	Material handling apparatus
CA1024472A (en)	1978-01-17	Material handling apparatus
CA1030110A (en)	1978-04-25	Self-leveling system for material handling implement
GB1551222A (en)	1979-08-30	Material handling system
AU504696B2 (en)	1979-10-25	Mechanical handling apparatus
AU530969B2 (en)	1983-08-04	Material handling system
CA1025373A (en)	1978-01-31	Material store
GB1547837A (en)	1979-06-27	Material handling system
AU510145B2 (en)	1980-06-12	Photopolymerisable material
CA1017287A (en)	1977-09-13	Material handling system
AU504620B2 (en)	1979-10-18	Weighing system
AU499341B2 (en)	1979-04-12	Handling apparatus
AU502110B2 (en)	1979-07-12	Handling sheet material ina vertical plane
AU5160179A (en)	1980-04-17	Material handling apparatus
CA1029335A (en)	1978-04-11	Container handling attachment
AU499484B2 (en)	1979-04-26	Calcining solid material
CA1029689A (en)	1978-04-18	Adjustable boom for material handling implement
AU507756B2 (en)	1980-02-28	Dispersing solid material
CA1018002A (en)	1977-09-27	Material handling system
SU641939A1 (en)	1979-01-15	Arrangement for pneumating transport of materials
CA1014048A (en)	1977-07-19	Material handling bucket dual cylinder system
AU499020B2 (en)	1979-04-05	Implement for handling fibrous material
AU495743B2 (en)	1977-12-01	Animal handling means
AU1216876A (en)	1977-09-22	Document handling system