IT1045650B - Perfezionamenti apportati a valvole idrauliche - Google Patents
Perfezionamenti apportati a valvole idraulicheInfo
- Publication number
- IT1045650B IT1045650B IT28939/75A IT2893975A IT1045650B IT 1045650 B IT1045650 B IT 1045650B IT 28939/75 A IT28939/75 A IT 28939/75A IT 2893975 A IT2893975 A IT 2893975A IT 1045650 B IT1045650 B IT 1045650B
- Authority
- IT
- Italy
- Prior art keywords
- hydraulic valves
- refinements made
- refinements
- valves
- hydraulic
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
- F16H39/02—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motors at a distance from liquid pumps
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
- Y10T137/7764—Choked or throttled pressure type
- Y10T137/7766—Choked passage through main valve head
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7771—Bi-directional flow valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Safety Valves (AREA)
- Valve Device For Special Equipments (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB49872/74A GB1535175A (en) | 1974-11-18 | 1974-11-18 | Hydraulic valves |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1045650B true IT1045650B (it) | 1980-06-10 |
Family
ID=10453841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT28939/75A IT1045650B (it) | 1974-11-18 | 1975-10-31 | Perfezionamenti apportati a valvole idrauliche |
Country Status (8)
Country | Link |
---|---|
US (1) | US4013093A (it) |
AU (1) | AU8668275A (it) |
BE (1) | BE835632A (it) |
BR (1) | BR7507537A (it) |
DE (1) | DE2551489A1 (it) |
FR (1) | FR2291431A1 (it) |
GB (1) | GB1535175A (it) |
IT (1) | IT1045650B (it) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2616251C2 (de) * | 1976-04-13 | 1986-05-15 | Robert Bosch Gmbh, 7000 Stuttgart | Druckbegrenzungs- und Nachsaugventil |
DE2631922A1 (de) * | 1976-07-15 | 1978-01-19 | Linde Ag | Kombiniertes druckbegrenzungsventil und rueckschlagventil |
US4138929A (en) * | 1977-10-17 | 1979-02-13 | Caterpillar Tractor Co. | Pressure responsive check valve |
DE2848208C2 (de) * | 1978-11-07 | 1986-01-02 | Hydromatik Gmbh, 7900 Ulm | Vorgesteuertes Druckbegrenzungsventil mit Einspeisefunktion |
US4294278A (en) * | 1979-12-14 | 1981-10-13 | Caterpillar Tractor Co. | Pressure modulating valve |
WO1981001733A1 (en) * | 1979-12-14 | 1981-06-25 | Caterpillar Tractor Co | Pressure modulating valve |
US4738282A (en) * | 1981-09-28 | 1988-04-19 | Mcdonnell Douglas Corporation | Zero leakage valve |
US4718330A (en) * | 1982-01-18 | 1988-01-12 | Eltra Corporation | Hydraulic cylinder |
DE3513890A1 (de) * | 1985-04-17 | 1986-10-23 | Oerlikon-Boehringer GmbH, 7320 Göppingen | Hydraulische positionierantriebseinrichtung |
SE461391B (sv) * | 1987-10-28 | 1990-02-12 | Bt Ind Ab | Hydraulisk lyftanordning |
JP3537057B2 (ja) * | 1994-08-05 | 2004-06-14 | 株式会社小松製作所 | 圧力補償弁 |
US10378665B2 (en) * | 2015-09-18 | 2019-08-13 | Shimadzu Corporation | Pressure control valve |
US20230243325A1 (en) * | 2022-02-01 | 2023-08-03 | Sun Hydraulics, Llc | Pressure Relief Valve with a Reverse Free Flow Configuration Integrated Therewith |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3090398A (en) * | 1962-02-05 | 1963-05-21 | American Brake Shoe Co | Dual direction relief or sequence type valve |
US3268220A (en) * | 1964-01-06 | 1966-08-23 | Dro Engineering Company Di | Hydraulic cushion for dies |
US3710824A (en) * | 1971-05-07 | 1973-01-16 | Caterpillar Tractor Co | High pressure relief valve |
US3783891A (en) * | 1972-03-22 | 1974-01-08 | Under Sea Industries | Balanced regulator second stage |
-
1974
- 1974-11-18 GB GB49872/74A patent/GB1535175A/en not_active Expired
-
1975
- 1975-10-31 IT IT28939/75A patent/IT1045650B/it active
- 1975-11-13 FR FR7534587A patent/FR2291431A1/fr not_active Withdrawn
- 1975-11-13 BR BR7507537*A patent/BR7507537A/pt unknown
- 1975-11-14 US US05/632,131 patent/US4013093A/en not_active Expired - Lifetime
- 1975-11-17 DE DE19752551489 patent/DE2551489A1/de not_active Withdrawn
- 1975-11-17 BE BE161918A patent/BE835632A/xx unknown
- 1975-11-17 AU AU86682/75A patent/AU8668275A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE835632A (fr) | 1976-03-16 |
US4013093A (en) | 1977-03-22 |
BR7507537A (pt) | 1976-08-10 |
FR2291431A1 (fr) | 1976-06-11 |
AU8668275A (en) | 1977-05-26 |
DE2551489A1 (de) | 1976-05-20 |
GB1535175A (en) | 1978-12-06 |
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