FR2634806B1 - - Google Patents
Info
- Publication number
- FR2634806B1 FR2634806B1 FR898907093A FR8907093A FR2634806B1 FR 2634806 B1 FR2634806 B1 FR 2634806B1 FR 898907093 A FR898907093 A FR 898907093A FR 8907093 A FR8907093 A FR 8907093A FR 2634806 B1 FR2634806 B1 FR 2634806B1
- Authority
- FR
- France
- 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 - Fee Related
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
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63187872A JPH0238629A (ja) | 1988-07-26 | 1988-07-26 | バックホウの油圧回路 |
JP1988099539U JPH0223051U (fr) | 1988-07-27 | 1988-07-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2634806A1 FR2634806A1 (fr) | 1990-02-02 |
FR2634806B1 true FR2634806B1 (fr) | 1992-07-24 |
Family
ID=26440669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR898907093A Expired - Fee Related FR2634806B1 (fr) | 1988-07-26 | 1989-05-30 |
Country Status (5)
Country | Link |
---|---|
US (1) | US4986075A (fr) |
KR (1) | KR930002370B1 (fr) |
DE (1) | DE3916992A1 (fr) |
FR (1) | FR2634806B1 (fr) |
GB (1) | GB2222809B (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0751796B2 (ja) * | 1989-04-18 | 1995-06-05 | 株式会社クボタ | バックホウの油圧回路 |
GB2237791B (en) * | 1989-10-18 | 1994-01-26 | Waste Hoists Ltd | Collection vehicle, apparatus for use in the vehicle and method of collecting material |
US5174115A (en) * | 1991-09-30 | 1992-12-29 | Clark Equipment Company | Electrically actuated and controlled auxiliary hydraulic system for skid steer loader |
US5570577A (en) * | 1995-09-11 | 1996-11-05 | Dixie Electrical Manufacturing Company | Anchor torque controller for anchor installing machines |
JP3681833B2 (ja) * | 1996-09-19 | 2005-08-10 | ヤンマー株式会社 | 掘削旋回作業機の油圧回路 |
US6408676B1 (en) | 1999-03-31 | 2002-06-25 | Caterpillar Inc. | Method and apparatus for determining the status of a relief valve |
US6845614B2 (en) * | 2001-01-05 | 2005-01-25 | Ingersoll-Rand Company | Hydraulic valve system |
US6672843B1 (en) * | 2002-04-08 | 2004-01-06 | Hydro-Gear Limited Partnership | Dual pump apparatus comprising dual drive shafts and auxiliary pump |
US6953327B1 (en) | 2003-03-11 | 2005-10-11 | Hydro-Gear Limited Partnership | Dual pump |
KR101155774B1 (ko) * | 2004-12-31 | 2012-06-12 | 두산인프라코어 주식회사 | 중장비의 릴리프압 조절장치 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB925437A (en) * | 1961-11-09 | 1963-05-08 | Caterpillar Tractor Co | Hydraulic control system with pressure control valve |
US3922855A (en) * | 1971-12-13 | 1975-12-02 | Caterpillar Tractor Co | Hydraulic circuitry for an excavator |
US4024797A (en) * | 1975-10-28 | 1977-05-24 | Caterpillar Tractor Co. | Spring centered balanced resolver valve |
US4017221A (en) * | 1976-02-27 | 1977-04-12 | Caterpillar Tractor Co. | Combined unloading and relief valve for pump unloading circuit |
JPS5337895U (fr) * | 1976-09-08 | 1978-04-03 | Kubota Ltd | |
GB1590985A (en) * | 1977-11-30 | 1981-06-10 | Bredon Hydraulics | Hydraulic power packs |
JPS5831485B2 (ja) * | 1978-08-23 | 1983-07-06 | 株式会社神戸製鋼所 | 合流ポンプ方式の油圧回路におけるアンロ−ド機構 |
DE2952303A1 (de) * | 1979-12-24 | 1981-07-02 | Linde Ag, 6200 Wiesbaden | Hydrostatisches antriebssystem fuer einen bagger |
US4345436A (en) * | 1980-04-07 | 1982-08-24 | Caterpillar Tractor Co. | Control for load sharing pumps |
JPS57197336A (en) * | 1981-05-29 | 1982-12-03 | Komatsu Ltd | Oil-pressure circuit for turning excavator |
-
1989
- 1989-05-05 US US07/347,730 patent/US4986075A/en not_active Expired - Fee Related
- 1989-05-24 DE DE3916992A patent/DE3916992A1/de active Granted
- 1989-05-30 FR FR898907093A patent/FR2634806B1/fr not_active Expired - Fee Related
- 1989-06-12 GB GB8913458A patent/GB2222809B/en not_active Expired - Fee Related
- 1989-06-12 KR KR1019890008078A patent/KR930002370B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3916992A1 (de) | 1990-02-01 |
KR900001936A (ko) | 1990-02-27 |
KR930002370B1 (ko) | 1993-03-29 |
GB2222809B (en) | 1992-09-30 |
GB2222809A (en) | 1990-03-21 |
US4986075A (en) | 1991-01-22 |
FR2634806A1 (fr) | 1990-02-02 |
GB8913458D0 (en) | 1989-08-02 |
DE3916992C2 (fr) | 1991-05-23 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |