GB577496A - Improvements in or relating to power driven jacks - Google Patents

Improvements in or relating to power driven jacks

Info

Publication number
GB577496A
GB577496A GB4106/44A GB410644A GB577496A GB 577496 A GB577496 A GB 577496A GB 4106/44 A GB4106/44 A GB 4106/44A GB 410644 A GB410644 A GB 410644A GB 577496 A GB577496 A GB 577496A
Authority
GB
United Kingdom
Prior art keywords
pinions
motors
motor
failure
crown wheel
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
GB4106/44A
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.)
FRANCIS RICHARD MASON
Original Assignee
FRANCIS RICHARD MASON
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 FRANCIS RICHARD MASON filed Critical FRANCIS RICHARD MASON
Priority to GB4106/44A priority Critical patent/GB577496A/en
Publication of GB577496A publication Critical patent/GB577496A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C13/00—Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
    • B64C13/24—Transmitting means
    • B64C13/26—Transmitting means without power amplification or where power amplification is irrelevant
    • B64C13/28—Transmitting means without power amplification or where power amplification is irrelevant mechanical
    • B64C13/34—Transmitting means without power amplification or where power amplification is irrelevant mechanical using toothed gearing
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/205—Screw mechanisms comprising alternate power paths, e.g. for fail safe back-up
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2081—Parallel arrangement of drive motor to screw axis
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Retarders (AREA)
  • Transmission Devices (AREA)

Abstract

577,496. Screw jacks. MASON, F. R. March 6, 1944, No. 4106. [Class 78 (iii)] [Also in Groups XXXIII and XXXV] A power-driven jack for operating aircraft equipment such as landing flaps and retractable undercarriages has a pair of electric motors differentially connected thereto, braking means being associated with each motor for automatically arresting the movement of a motor on failure. In the embodiment shown, two motors 1, 2, drive a screw threaded member 21 through spur pinions 6, 7, a differential gear 10, 11, on a cross shaft 15, and pinions 18, 19. In the event of failure of one of the motors, a solenoid-operated brake is applied thereto to prevent its rotation, and the other motor drives the member 21 through the appropriate pinion and crown wheel, causing the planet pinions 12, 13, to roll around the fixed crown wheel, the member 21 moving at half the normal axial speed but maintaining the normal thrust. According to the Provisional Specification the differential mechanism may take the form of a linkage or a pulley-and-cable arrangement.
GB4106/44A 1944-03-06 1944-03-06 Improvements in or relating to power driven jacks Expired GB577496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4106/44A GB577496A (en) 1944-03-06 1944-03-06 Improvements in or relating to power driven jacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4106/44A GB577496A (en) 1944-03-06 1944-03-06 Improvements in or relating to power driven jacks

Publications (1)

Publication Number Publication Date
GB577496A true GB577496A (en) 1946-05-21

Family

ID=9770889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4106/44A Expired GB577496A (en) 1944-03-06 1944-03-06 Improvements in or relating to power driven jacks

Country Status (1)

Country Link
GB (1) GB577496A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0401101A1 (en) * 1989-05-30 1990-12-05 S.E.S.R. - Societe Europeenne De Semi-Remorques Control device for a support of a semi-trailer
WO2010142771A1 (en) * 2009-06-10 2010-12-16 Sagem Defense Securite Device for actuating a control surface of an aircraft
EP3286456A4 (en) * 2015-04-24 2018-12-05 Moog Inc. Fail-safe electromechanical actuator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0401101A1 (en) * 1989-05-30 1990-12-05 S.E.S.R. - Societe Europeenne De Semi-Remorques Control device for a support of a semi-trailer
FR2647737A1 (en) * 1989-05-30 1990-12-07 Fruehauf France DEVICE FOR CONTROLLING A SEMI-TRAILER STAND
WO2010142771A1 (en) * 2009-06-10 2010-12-16 Sagem Defense Securite Device for actuating a control surface of an aircraft
FR2946617A1 (en) * 2009-06-10 2010-12-17 Sagem Defense Securite DEVICE FOR ACTUATING AN AIRCRAFT GOVERNMENT.
US9216815B2 (en) 2009-06-10 2015-12-22 Sagem Defense Securite Device for actuating a control surface of an aircraft
EP3286456A4 (en) * 2015-04-24 2018-12-05 Moog Inc. Fail-safe electromechanical actuator

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