GB1072884A - Jack - Google Patents

Jack

Info

Publication number
GB1072884A
GB1072884A GB4855864A GB4855864A GB1072884A GB 1072884 A GB1072884 A GB 1072884A GB 4855864 A GB4855864 A GB 4855864A GB 4855864 A GB4855864 A GB 4855864A GB 1072884 A GB1072884 A GB 1072884A
Authority
GB
United Kingdom
Prior art keywords
edge
jack
flat portions
disc units
unit
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
Application number
GB4855864A
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.)
WLADYSLAW MARIAN JULIAN RYZEWS
Original Assignee
WLADYSLAW MARIAN JULIAN RYZEWS
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 WLADYSLAW MARIAN JULIAN RYZEWS filed Critical WLADYSLAW MARIAN JULIAN RYZEWS
Priority to GB4855864A priority Critical patent/GB1072884A/en
Publication of GB1072884A publication Critical patent/GB1072884A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/35—Inflatable flexible elements, e.g. bellows

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

1,072,884. Hydraulic Jacks. W. M. J. RYZEWSKI. Nov. 9, 1965 [Nov. 30, 1964], No. 48558/64. Heading B8J. A jack assembly comprises four circular disc units 2 interconnected by couplers 13 only. Each unit comprises flat portions 3, 4 joined by a continuous curved edge 5. The flat portions 3, 4 may have an initial predetermined curvature in one or two directions. To use the jack the topmost coupler 13 is closed by a plug 9 and a liquid access plate 25, Fig. 4 (not shown), connected to the lowermost coupler 13. Liquid under pressure is introduced into the jack and enters all the disc units 2 simultaneously, the edges 5 being forced to expand uniformly until the shape shown dotted is reached. At maximum extension the edges 5 may undergo plastic deformation in which case the disc units 2 may only be used once, otherwise the jack may be used several times. The flat portions 3, 4 and the edge 5 may be sheet steel. The flat portions 15, Fig. 2 (not shown), may be any desired weldable metal and the edge 15 of plastics with or without steel wire reinforcement. The unit 2 may be wholly of the material used for the edge 16. A jack assembly may comprise a single -unit with an edge having any desired number of folds starting from two, Fig. 3 (not shown). Other shapes are envisaged such as square rectangular or rings (visualized as flattened doughnuts).
GB4855864A 1964-11-30 1964-11-30 Jack Expired GB1072884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4855864A GB1072884A (en) 1964-11-30 1964-11-30 Jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4855864A GB1072884A (en) 1964-11-30 1964-11-30 Jack

Publications (1)

Publication Number Publication Date
GB1072884A true GB1072884A (en) 1967-06-21

Family

ID=10449037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4855864A Expired GB1072884A (en) 1964-11-30 1964-11-30 Jack

Country Status (1)

Country Link
GB (1) GB1072884A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929662U (en) * 1971-11-18 1974-03-14
JPS4978960U (en) * 1972-10-30 1974-07-09
US4337921A (en) * 1979-07-30 1982-07-06 Fpt Industries Inflatable ram
US4417639A (en) * 1981-11-16 1983-11-29 Jack Wegener Dynamic gas pressured jacking structure with improved load stability and air pallet employing same
GB2166496A (en) * 1984-11-03 1986-05-08 Festo Kg Fluid-operated actuator
US4655008A (en) * 1985-12-19 1987-04-07 The B. F. Goodrich Company Inflatable shelter lift bag
EP0903317A1 (en) * 1997-09-23 1999-03-24 Vernon T Mullican Pneumatic jack
GB2349917A (en) * 1999-05-11 2000-11-15 Mangar Int Ltd Fluid operable ram

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929662U (en) * 1971-11-18 1974-03-14
JPS5339009Y2 (en) * 1971-11-18 1978-09-21
JPS4978960U (en) * 1972-10-30 1974-07-09
US4337921A (en) * 1979-07-30 1982-07-06 Fpt Industries Inflatable ram
US4417639A (en) * 1981-11-16 1983-11-29 Jack Wegener Dynamic gas pressured jacking structure with improved load stability and air pallet employing same
GB2166496A (en) * 1984-11-03 1986-05-08 Festo Kg Fluid-operated actuator
US4655008A (en) * 1985-12-19 1987-04-07 The B. F. Goodrich Company Inflatable shelter lift bag
EP0903317A1 (en) * 1997-09-23 1999-03-24 Vernon T Mullican Pneumatic jack
GB2349917A (en) * 1999-05-11 2000-11-15 Mangar Int Ltd Fluid operable ram
GB2349917B (en) * 1999-05-11 2003-12-10 Mangar Int Ltd Fluid operable ram

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