GB564581A - Improvements in or relating to hydraulic jacks and the like - Google Patents

Improvements in or relating to hydraulic jacks and the like

Info

Publication number
GB564581A
GB564581A GB17398/42A GB1739842A GB564581A GB 564581 A GB564581 A GB 564581A GB 17398/42 A GB17398/42 A GB 17398/42A GB 1739842 A GB1739842 A GB 1739842A GB 564581 A GB564581 A GB 564581A
Authority
GB
United Kingdom
Prior art keywords
latch
pressure
cylinder
piston
until
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
GB17398/42A
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation Corp
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 Bendix Aviation Corp filed Critical Bendix Aviation Corp
Publication of GB564581A publication Critical patent/GB564581A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position

Abstract

564,581. Hydraulic transmission of power. BENDIX AVIATION CORPORATION. Dec. 7, 1942, No. 17398. Convention date, Feb. 26, 1942. [Class 69 (ii)] In a hydraulic motor for use in aeroplanes having piston locking means 44 or 74 adapted to be released by incoming pressure fluid, a valve 52 or 82 in the pressure inlet to the cylinder is opened mechanically by the locking means as it is released. Pressure liquid supplied at 53 acts on a piston 60 to raise the latch 44 against the pressure of a spring until an abutment 54 on the latch opens a valve 52 and admits pressure liquid to the cylinder. Piston 16 is then moved to the right until an enlargement 22 on the rod enters a restricted portion 70 of the cylinder to act as a dashpot and reduce the speed. Exhaust takes place through passages 76 in the latch 74 until the latch engages a shoulder 22a on the enlargement 22 and locks the piston at the end of the stroke. For the return stroke pressure fluid is supplied at 86 to raise the latch 76 until it opens valve 82 and admits pressure to the cylinder. At the end of the stroke, latch 44 engages a shoulder 20a on the dashpot enlargement 20. The latches may be raised manually by rods 68, 96. The Specification as open to inspection under Sect. 91 states also that the rod 68 may operate a switch on a signalling circuit. This subjectmatter does not appear in the Specification as accepted.
GB17398/42A 1942-02-26 1942-12-07 Improvements in or relating to hydraulic jacks and the like Expired GB564581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US564581XA 1942-02-26 1942-02-26

Publications (1)

Publication Number Publication Date
GB564581A true GB564581A (en) 1944-10-04

Family

ID=22004535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17398/42A Expired GB564581A (en) 1942-02-26 1942-12-07 Improvements in or relating to hydraulic jacks and the like

Country Status (1)

Country Link
GB (1) GB564581A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1788257A3 (en) * 2005-11-18 2009-09-02 Festo AG & Co. KG Fluid pressure actuator with end of stroke locking means
CN105402203A (en) * 2015-12-07 2016-03-16 郑州宇通重工有限公司 Oil cylinder tail end automatic lockup valve and hydraulic oil cylinder with oil cylinder tail end automatic lockup valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1788257A3 (en) * 2005-11-18 2009-09-02 Festo AG & Co. KG Fluid pressure actuator with end of stroke locking means
CN105402203A (en) * 2015-12-07 2016-03-16 郑州宇通重工有限公司 Oil cylinder tail end automatic lockup valve and hydraulic oil cylinder with oil cylinder tail end automatic lockup valve

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