FR1159231A - Perfectionnements apportés aux dispositifs du genre des valves, notamment à ceux pour régler la pression d'un circuit hydraulique - Google Patents
Perfectionnements apportés aux dispositifs du genre des valves, notamment à ceux pour régler la pression d'un circuit hydrauliqueInfo
- Publication number
- FR1159231A FR1159231A FR1159231DA FR1159231A FR 1159231 A FR1159231 A FR 1159231A FR 1159231D A FR1159231D A FR 1159231DA FR 1159231 A FR1159231 A FR 1159231A
- Authority
- FR
- France
- Prior art keywords
- valves
- adjusting
- devices
- pressure
- those
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/1006—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means the hydraulic or pneumatic means structurally belonging to the tractor
- A01B63/1013—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means the hydraulic or pneumatic means structurally belonging to the tractor and being located inside the tractor body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/31505—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source and a return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/321—Directional control characterised by the type of actuation mechanically
- F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/41—Flow control characterised by the positions of the valve element
- F15B2211/411—Flow control characterised by the positions of the valve element the positions being discrete
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41572—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and an output member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7052—Single-acting output members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/76—Control of force or torque of the output member
-
- 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
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86863—Rotary valve unit
- Y10T137/86871—Plug
-
- 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
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
- Y10T137/87177—With bypass
-
- 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
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/8741—With common operator
- Y10T137/87442—Rotary valve
-
- 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
- Y10T137/8593—Systems
- Y10T137/877—With flow control means for branched passages
- Y10T137/87708—With common valve operator
- Y10T137/87724—For valve having a ball head
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
- Reciprocating Pumps (AREA)
- Multiple-Way Valves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR785116A FR75067E (fr) | 1959-01-27 | 1959-01-27 | Perfectionnements apportés aux dispositifs du genre des valves, notamment à ceux pour régler la pression d'un circuit hydraulique |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1159231A true FR1159231A (fr) | 1958-06-25 |
Family
ID=8710560
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1159231D Expired FR1159231A (fr) | 1959-01-27 | 1956-08-29 | Perfectionnements apportés aux dispositifs du genre des valves, notamment à ceux pour régler la pression d'un circuit hydraulique |
FR785116A Expired FR75067E (fr) | 1959-01-27 | 1959-01-27 | Perfectionnements apportés aux dispositifs du genre des valves, notamment à ceux pour régler la pression d'un circuit hydraulique |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR785116A Expired FR75067E (fr) | 1959-01-27 | 1959-01-27 | Perfectionnements apportés aux dispositifs du genre des valves, notamment à ceux pour régler la pression d'un circuit hydraulique |
Country Status (5)
Country | Link |
---|---|
US (1) | US3045697A (fr) |
DE (1) | DE1149215B (fr) |
FR (2) | FR1159231A (fr) |
GB (1) | GB919638A (fr) |
IT (1) | IT649884A (fr) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1108996B (de) * | 1959-03-03 | 1961-06-15 | Teves Kg Alfred | Steuerung fuer Druckmittelverbraucher |
DE1142088B (de) * | 1959-11-24 | 1963-01-03 | Sulzer Ag | Druckmittelbetaetigter Steuerschieber |
DE1148433B (de) * | 1958-04-12 | 1963-05-09 | Kenneth Gauldie | UEberdruckventil fuer den hydraulischen Antrieb von Backenbrechern |
DE1149215B (de) * | 1959-01-27 | 1963-05-22 | Sertec Soc D Etudes Et De Rech | Steuer- und Regeleinrichtung, insbesondere mit Druckregelung in einem hydraulischen oder pneumatischen Kreislauf |
DE1169746B (de) * | 1960-05-16 | 1964-05-06 | Parker Hannifin Corp | Federbelastetes UEberdruckventil mit einem seine Ausloesung bewirkenden federbelasteten Hilfsventil |
DE1227745B (de) * | 1960-06-27 | 1966-10-27 | Sperry Rand Corp | Steuereinrichtung mit mindestens einem Steuerschieber oder -ventil |
DE1230637B (de) * | 1961-12-08 | 1966-12-15 | Teves Kg Alfred | Hilfsgesteuertes UEberdruckventil |
DE1268464B (de) * | 1963-06-28 | 1968-05-16 | Internat Harvester Company M B | Hilfsgesteuertes Sicherheitsventil |
EP0009749A1 (fr) * | 1978-09-29 | 1980-04-16 | Regie Nationale Des Usines Renault | Vanne de régulation de pression à 3 ou 4 niveaux |
FR2570520A1 (fr) * | 1984-09-18 | 1986-03-21 | Renault | Dispositif de regulation de pression a deux niveaux |
US5305780A (en) * | 1992-02-27 | 1994-04-26 | Dresser Industries | Pressure relief valve with auxiliary loading device |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113580A (en) * | 1959-05-19 | 1963-12-10 | Faure Daniel | Hydraulic control device for tractors and the like |
US3231234A (en) * | 1963-02-11 | 1966-01-25 | Dro Engineering Company Di | Metering valve |
US3643698A (en) * | 1968-12-05 | 1972-02-22 | Olin Corp | Valve |
US3753448A (en) * | 1969-11-12 | 1973-08-21 | Haws Drinking Faucet Co | Valve assembly for water fountains and the like |
US4276810A (en) * | 1972-11-08 | 1981-07-07 | Control Concepts, Inc. | Programmed valve system used for positioning control |
DE2645448C2 (de) * | 1976-10-08 | 1979-07-19 | Wabco Westinghouse Gmbh, 3000 Hannover | Drossel für die gedrosselte Entlüftung in Wegeventilen |
US4197785A (en) * | 1977-06-16 | 1980-04-15 | Weber William R | Hydraulic actuator cushioning device |
GB2144242B (en) * | 1983-07-26 | 1987-07-22 | Linde Ag | A machine control arrangement |
WO1997037102A2 (fr) * | 1996-04-01 | 1997-10-09 | Baker Hughes Incorporated | Dispositifs de regulation d'ecoulement de fond de puits |
US6779560B1 (en) * | 2002-10-24 | 2004-08-24 | Vitrom Manufacturing Consultants | Multiport valve |
US6983764B2 (en) * | 2003-04-03 | 2006-01-10 | Hays Fluid Controls, A Division Of Romac Industries, Inc. | Sequencing valve and hydronic system |
US7610931B2 (en) * | 2006-02-08 | 2009-11-03 | Mark Wittig | Bypass valve with an integral flow sensor for a water treatment system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2366693A (en) * | 1942-08-26 | 1945-01-09 | Aircraft Accessories Corp | Selector valve |
US2544972A (en) * | 1944-08-04 | 1951-03-13 | Deere Mfg Co | Valve mechanism for hydraulic units |
US2610022A (en) * | 1947-08-26 | 1952-09-09 | Bendix Aviat Corp | Control valve with free position |
US2679263A (en) * | 1950-02-28 | 1954-05-25 | Case Co J I | Hydraulic control valve |
IT649884A (fr) * | 1959-01-27 | 1900-01-01 |
-
0
- IT IT649884D patent/IT649884A/it unknown
-
1956
- 1956-08-29 FR FR1159231D patent/FR1159231A/fr not_active Expired
-
1959
- 1959-01-27 FR FR785116A patent/FR75067E/fr not_active Expired
-
1960
- 1960-01-25 US US4576A patent/US3045697A/en not_active Expired - Lifetime
- 1960-01-26 DE DES66789A patent/DE1149215B/de active Pending
- 1960-01-27 GB GB3002/60A patent/GB919638A/en not_active Expired
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1148433B (de) * | 1958-04-12 | 1963-05-09 | Kenneth Gauldie | UEberdruckventil fuer den hydraulischen Antrieb von Backenbrechern |
DE1149215B (de) * | 1959-01-27 | 1963-05-22 | Sertec Soc D Etudes Et De Rech | Steuer- und Regeleinrichtung, insbesondere mit Druckregelung in einem hydraulischen oder pneumatischen Kreislauf |
DE1108996B (de) * | 1959-03-03 | 1961-06-15 | Teves Kg Alfred | Steuerung fuer Druckmittelverbraucher |
DE1142088B (de) * | 1959-11-24 | 1963-01-03 | Sulzer Ag | Druckmittelbetaetigter Steuerschieber |
DE1169746B (de) * | 1960-05-16 | 1964-05-06 | Parker Hannifin Corp | Federbelastetes UEberdruckventil mit einem seine Ausloesung bewirkenden federbelasteten Hilfsventil |
DE1227745B (de) * | 1960-06-27 | 1966-10-27 | Sperry Rand Corp | Steuereinrichtung mit mindestens einem Steuerschieber oder -ventil |
DE1230637B (de) * | 1961-12-08 | 1966-12-15 | Teves Kg Alfred | Hilfsgesteuertes UEberdruckventil |
DE1268464B (de) * | 1963-06-28 | 1968-05-16 | Internat Harvester Company M B | Hilfsgesteuertes Sicherheitsventil |
EP0009749A1 (fr) * | 1978-09-29 | 1980-04-16 | Regie Nationale Des Usines Renault | Vanne de régulation de pression à 3 ou 4 niveaux |
FR2437548A1 (fr) * | 1978-09-29 | 1980-04-25 | Renault | Vanne de regulation de pression a 3 ou 4 niveaux |
US4279268A (en) * | 1978-09-29 | 1981-07-21 | Regie Nationale Des Usines Renault | Multi-level pressure regulating valve |
FR2570520A1 (fr) * | 1984-09-18 | 1986-03-21 | Renault | Dispositif de regulation de pression a deux niveaux |
EP0176431A1 (fr) * | 1984-09-18 | 1986-04-02 | Regie Nationale Des Usines Renault | Dispositif de régulation de pression à deux niveaux |
US4664137A (en) * | 1984-09-18 | 1987-05-12 | Regie Nationale Des Usines Renault | Two-level pressure control device |
US5305780A (en) * | 1992-02-27 | 1994-04-26 | Dresser Industries | Pressure relief valve with auxiliary loading device |
Also Published As
Publication number | Publication date |
---|---|
FR75067E (fr) | 1961-03-24 |
US3045697A (en) | 1962-07-24 |
DE1149215B (de) | 1963-05-22 |
IT649884A (fr) | 1900-01-01 |
GB919638A (en) | 1963-02-27 |
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