GB972728A - Quick acting gate - Google Patents

Quick acting gate

Info

Publication number
GB972728A
GB972728A GB1781862A GB1781862A GB972728A GB 972728 A GB972728 A GB 972728A GB 1781862 A GB1781862 A GB 1781862A GB 1781862 A GB1781862 A GB 1781862A GB 972728 A GB972728 A GB 972728A
Authority
GB
United Kingdom
Prior art keywords
disc
solenoid
current
magnetic field
zero
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
GB1781862A
Inventor
John Weeden Corcoran
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.)
Beckman and Whitley Inc
Original Assignee
Beckman and Whitley Inc
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 Beckman and Whitley Inc filed Critical Beckman and Whitley Inc
Priority to GB1781862A priority Critical patent/GB972728A/en
Publication of GB972728A publication Critical patent/GB972728A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

972,728. Valves. BECKMAN & WHITLEY Inc. May 9, 1962, No. 17818/62. Heading F2V. [Also in Division G2] A quick-acting gate or shutter comprises a circular disc of electrically conductive material, rotatably supported about a diametral axis, so disposed that the establishment of a magnetic field induces a current in the disc which, by interacting with the said field, causes rotation of the disc. In the form shown, the disc 14 is of aluminium, with pivotal bearings 16 at each end of a diametral axis, and is mounted inside a solenoid 11. When the solenoid is energized, a magnetic field is established as indicated by flux lines 17. These are intercepted by disc 14, causing a current to flow in the disc in circular paths. The interaction between this current and the magnetic field causes the disc to rotate. When the disc is coplanar with the solenoid, the induced current is at a maximum, but the rotational force is zero. When the disc is perpendicular to the solenoid, the induced current is zero, but the rotational force is at a maximum. Thus the optimum condition for rotation is when the disc is at 45 degrees. Control of the movement of the disc is achieved by suitable choice of the duration and shape of the energy pulses applied to the solenoid.
GB1781862A 1962-05-09 1962-05-09 Quick acting gate Expired GB972728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1781862A GB972728A (en) 1962-05-09 1962-05-09 Quick acting gate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1781862A GB972728A (en) 1962-05-09 1962-05-09 Quick acting gate

Publications (1)

Publication Number Publication Date
GB972728A true GB972728A (en) 1964-10-14

Family

ID=10101762

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1781862A Expired GB972728A (en) 1962-05-09 1962-05-09 Quick acting gate

Country Status (1)

Country Link
GB (1) GB972728A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121519A (en) * 1982-06-07 1983-12-21 Kloeckner Humboldt Deutz Ag Flap valve for a wet settling tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121519A (en) * 1982-06-07 1983-12-21 Kloeckner Humboldt Deutz Ag Flap valve for a wet settling tank

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