US1980617A - Hydraulic opening and closing device - Google Patents

Hydraulic opening and closing device Download PDF

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Publication number
US1980617A
US1980617A US571148A US57114831A US1980617A US 1980617 A US1980617 A US 1980617A US 571148 A US571148 A US 571148A US 57114831 A US57114831 A US 57114831A US 1980617 A US1980617 A US 1980617A
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US
United States
Prior art keywords
piston
cylinder
pistons
movement
cylinders
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 - Lifetime
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US571148A
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English (en)
Inventor
Engel Ernst
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.)
Continental Teves AG and Co OHG
Original Assignee
Alfred Teves GmbH
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
Application filed by Alfred Teves GmbH filed Critical Alfred Teves GmbH
Application granted granted Critical
Publication of US1980617A publication Critical patent/US1980617A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
    • E05F15/51—Power-operated mechanisms for wings using fluid-pressure actuators for folding wings

Definitions

  • HYDRAULIC OPENING AND-CLOSING DEVICE Filed Oct. 26. 1931' INVENTOR Srnst grzyel ATTORNEY Patented Nov. 13, 1934 HYDRAULIC OPENING AND CLOSING DEVICE Ernst Engel, Frankfort-on-the-Main, Germany,
  • This invention deals with a hydraul c door opening and closing mechanism which is especially adapted to operating folding doors on vehicles, and difl'ers from similar arrangements heretofore used in providing in each main drive cylinder, one of which is used for opening and the other for closing the doors, a piston with a smaller cylinder and another piston therewithin,
  • each movement of the leaves of the door is started by the small cylinder and completed by the large cylinder.
  • the dead center positions which the door sections occupy at the beginning of each movement, and their inertia, are It overcome by the exertion of greater force during this portion of the movement, while during the remainder of the door movement, when less power is required, the motivation is by the larger cylinder and is accordingly more rapid.
  • Another important object of the invention is the provision of a double acting fluid motor mechanism of improved construction and incorporating a novel arrangement whereby greater force and slower travel are effected at the beginning of each movement in each direction, while faster travel under the application of lesser driving force is derived during the latter part of each movement.
  • the opposed pressure-producing cylinders which are operated through the lever 1 (shown fulcrumed at 2) and the rod 3, consist each of one interfltting cylinder pair, the cylinder assembly on the right in the drawing being for opening and that on the left for closing.
  • the large opening cylinder 4 contains the large piston 5, which is itself formed with a small cylinder 6 therein within which is slidable a smaller piston 7.
  • For closing there is provided a similar assembly comprising a larger cylinder 8 with piston 9, which again contains a small cylinder 10 and piston 11.
  • the rod 3 is arranged to actuate either smaller piston when moved to push the same inwardly, but the rod floats between them so that it can pull neither.
  • pistons 5 and 9 are canals 12 and 13 connecting cylinder 4 with cylinder 6 and cylinder 8 with cylinder 10, respectively.
  • a fluid pressure transmission line 14 with which is connected a pressure absorbing or motor cylinder 15.
  • Cylinders 8 and 10 are similarly connected by means of a transmission tube 16 with another motor cylinder 1'7.
  • Cylinders 15-17 are also arranged in opposed relation and their pistons 18-19 are Joined by means of a rack 20, which meshes with a gear 21.
  • Gear 21, or its shaft is arranged to actuate levers 22-23, which by means of links 24-25 are joined to cranks 26-27.
  • the latter are rigidly secured to pintle rods 28-29 about which the folding doors 30-31 swing, their inner leaves being fast upon the rods andtheir outer leaves hingedly joined to the inner.
  • the closing of the door may be accomplished with approximately an equal expenditure of power upon lever 1, as after overcoming the inertia of the door and pass- 105 ing the initial dead center point through the a pressure generated in the small cylinder, only slight power is needed to continue the movement.
  • piston 18 is also moved, at the same rate as piston 19, and displaces the fluid in cylinder 15, forcing it thru transmission line 14 into cylinder 4, where the other large piston, 5, is moved thereby until it engages stop 33, and then the small piston 7 is moved and alone follows rod 3. Both pistons are thus moved to positions which correspond to the opposite of the illustrated positioning of pistons 91l; lever 1 assuming the dotted position in the drawing. 01 importance in this procedure is the loose connection of the rod 3 with the two pistons 7-11. Thereby the pistons in the cylinders to which returned liquid is being delivered are moved solely by the liquid, instead of drawn by rod 3.
  • lever 1 is moved in the direction of arrow b, "and the small piston 7 thus first moved. Again liquid pressure results, now in the opposite direction, which under the influence of the small piston permits easy overcoming of the initial dead center point resulting from the extended position of the folding door members, and their inertia. Then when the small piston contacts stop 35 the large piston 5 continues more quickly the opening of the doors, and the fluid displaced over transmission line 16 similarly returns pistons 9-11 to the starting position ready for another closing operation.
  • a hydraulic reciprocating system a pair of opposed fixed driving cylinders, a substantially cylindrical piston in each, asmaller cylinder and piston in eacn of the first mentioned pistons, floating drive means unconnected to but adapted to abut each of the smaller pistons adapted to act compressively thereupon when moved in opposite directions, thereby exerting no tractile effort on one of the smaller pistons when compressively moving another.
  • a hydraulic driving pump comprising a pair of opposed cylinders arranged with their heads outermost, a trunk type piston in each cylinder,
  • said inner pistons being arranged in opposed relation, and means including a single operating lever for compressively moving either of the inner pistons, the interfitted cylinders being interconnected, whereby the pressure within both the outer and inner cylinder of each pair of cylinders may be affected by actuation of the inner piston, the inner pistons being movable outwardly independently of each other.
  • a hydraulic driving pump comprising a pair of opposed cylinders, a trunk type piston in each cylinder, an inner cylinder and piston arranged inside each of said first mentioned pistons, said inner cylinders having opposed inwardly facing open ends said inner pistons being arranged to arranged between said inner pistons to enable selective actuation of either thereof, the thrust member being movable away from each of said inner pistons independently thereof.
  • a hydraulic driving pump comprising a pair of opposed cylinders, a trunk type piston in each cylinder, an inner cylinder and piston arranged inside each of said first mentioned pistons, said inner pistons being arranged substantially opposite and parallel to each other, and a common thrust member arranged between said inner pistons to enable selective actuation of either thereof compressively, said thrust member being functionally unconnected to the opposite piston while compressively moving either thereof.
  • a hydraulic driving pump comprising a plurality of substantially coaxial opposed cylinders arranged with their heads outermost, a piston in each cylinder, an inner cylinder and piston in each of said first mentioned pistons, the inner pistons being arranged insubstantially coaxial opposed relation, and a single thrust element interposed between the inner pistons to enable selective compressive actuation thereof, but unconnected to the opposite piston while compressively actuating either thereof, whereby tractile effort cannot be exerted on either piston by the thrust element.

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)
  • Actuator (AREA)
US571148A 1931-05-30 1931-10-26 Hydraulic opening and closing device Expired - Lifetime US1980617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET38928D DE547209C (de) 1931-05-30 1931-05-30 Hydraulische OEffnungs- und Schliessvorrichtung, insbesondere fuer Falttueren an Fahrzeugen

Publications (1)

Publication Number Publication Date
US1980617A true US1980617A (en) 1934-11-13

Family

ID=7560341

Family Applications (1)

Application Number Title Priority Date Filing Date
US571148A Expired - Lifetime US1980617A (en) 1931-05-30 1931-10-26 Hydraulic opening and closing device

Country Status (5)

Country Link
US (1) US1980617A (de)
AT (1) AT129397B (de)
DE (1) DE547209C (de)
FR (1) FR725951A (de)
GB (1) GB370335A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432088A (en) * 1942-03-19 1947-12-09 Valve Engineering Company Pressure actuated valve
US2588166A (en) * 1946-03-01 1952-03-04 Marquette Metal Products Co Variable pitch propeller
US2606761A (en) * 1949-06-29 1952-08-12 Charles G G Group Hydraulic door actuator
US2879644A (en) * 1956-01-09 1959-03-31 American Brake Shoe Co Apparatus for moving and positioning a movable means
US2986881A (en) * 1958-04-23 1961-06-06 United Aircraft Corp Fuel accumulator for aircraft jet engine starter
US3070961A (en) * 1961-04-06 1963-01-01 Gen Motors Corp Master cylinder
US3248882A (en) * 1960-10-18 1966-05-03 Hartford Machine Screw Co Throttle control and actuator
WO2008137550A3 (en) * 2007-05-03 2009-12-30 Wabtec Holding Corp. Locking mechanism for pneumatic differential engine for power-operated doors

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261775B (de) * 1962-09-11 1968-02-22 Hugo Krueger Kolben-Zylinder-Antrieb zum OEffnen und Schliessen von Tuer- und Fensterfluegeln od. dgl.
CH670224A5 (de) * 1983-04-20 1989-05-31 Cwa Const Sa

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432088A (en) * 1942-03-19 1947-12-09 Valve Engineering Company Pressure actuated valve
US2588166A (en) * 1946-03-01 1952-03-04 Marquette Metal Products Co Variable pitch propeller
US2606761A (en) * 1949-06-29 1952-08-12 Charles G G Group Hydraulic door actuator
US2879644A (en) * 1956-01-09 1959-03-31 American Brake Shoe Co Apparatus for moving and positioning a movable means
US2986881A (en) * 1958-04-23 1961-06-06 United Aircraft Corp Fuel accumulator for aircraft jet engine starter
US3248882A (en) * 1960-10-18 1966-05-03 Hartford Machine Screw Co Throttle control and actuator
US3070961A (en) * 1961-04-06 1963-01-01 Gen Motors Corp Master cylinder
WO2008137550A3 (en) * 2007-05-03 2009-12-30 Wabtec Holding Corp. Locking mechanism for pneumatic differential engine for power-operated doors
US20100199564A1 (en) * 2007-05-03 2010-08-12 Wabtec Holding Corp. Locking mechanism for pneumatic differential engine for power-operated doors
US8291644B2 (en) 2007-05-03 2012-10-23 Wabtec Holding Corp. Locking mechanism for pneumatic differential engine for power-operated doors
CN101715504B (zh) * 2007-05-03 2013-08-21 瓦博泰克控股公司 用于自动门的气动差动式机械的锁定机构
AU2008247706B2 (en) * 2007-05-03 2013-10-31 Wabtec Holding Corp. Locking mechanism for pneumatic differential engine for power-operated doors

Also Published As

Publication number Publication date
DE547209C (de) 1932-04-15
FR725951A (fr) 1932-05-20
GB370335A (en) 1932-04-07
AT129397B (de) 1932-07-25

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