PT1129505E - CYLINDRICAL ACTUATOR - Google Patents

CYLINDRICAL ACTUATOR

Info

Publication number
PT1129505E
PT1129505E PT99954154T PT99954154T PT1129505E PT 1129505 E PT1129505 E PT 1129505E PT 99954154 T PT99954154 T PT 99954154T PT 99954154 T PT99954154 T PT 99954154T PT 1129505 E PT1129505 E PT 1129505E
Authority
PT
Portugal
Prior art keywords
actuator
cylinder
cylindrical actuator
cylinders
helical guideway
Prior art date
Application number
PT99954154T
Other languages
Portuguese (pt)
Inventor
John Harrison
Original Assignee
John Harrison
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 John Harrison filed Critical John Harrison
Publication of PT1129505E publication Critical patent/PT1129505E/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/125—Means for positioning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system

Landscapes

  • Transmission Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fluid-Damping Devices (AREA)
  • Fluid-Driven Valves (AREA)
  • Actuator (AREA)
  • Surgical Instruments (AREA)

Abstract

Actuator, especially suited for an actuating mechanism for parabolic and other reflector dishes. The actuator comprises two co-axial cylinders (8, 12). A helical guideway (10) is provided on the outer surface of the inner cylinder (12) or the inner surface of the outer cylinder (8), and a plurality of guide means are provided on the other of the outer surface of the inner cylinder (12) or the inner surface of the outer cylinder (8) to run in or along the helical guideway (10). The actuator is elongated or contracted by relative rotational movement of the cylinders (8, 12).
PT99954154T 1998-11-09 1999-11-05 CYLINDRICAL ACTUATOR PT1129505E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9824550.9A GB9824550D0 (en) 1998-11-09 1998-11-09 Actuator

Publications (1)

Publication Number Publication Date
PT1129505E true PT1129505E (en) 2004-06-30

Family

ID=10842126

Family Applications (1)

Application Number Title Priority Date Filing Date
PT99954154T PT1129505E (en) 1998-11-09 1999-11-05 CYLINDRICAL ACTUATOR

Country Status (10)

Country Link
EP (1) EP1129505B1 (en)
AT (1) ATE259102T1 (en)
AU (1) AU773380B2 (en)
DE (1) DE69914624D1 (en)
ES (1) ES2215408T3 (en)
GB (1) GB9824550D0 (en)
MA (1) MA25269A1 (en)
MX (1) MXPA01004273A (en)
PT (1) PT1129505E (en)
WO (1) WO2000028619A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096050A (en) * 1934-06-25 1937-10-19 Auto Specialties Mfg Co Lifting jack
GB2266996A (en) * 1992-05-01 1993-11-17 Racal Res Ltd Antenna support providing movement in two transverse axes.
JP2746200B2 (en) * 1995-04-26 1998-04-28 日本電気株式会社 Antenna drive

Also Published As

Publication number Publication date
MXPA01004273A (en) 2002-06-04
EP1129505B1 (en) 2004-02-04
EP1129505A1 (en) 2001-09-05
WO2000028619A1 (en) 2000-05-18
MA25269A1 (en) 2001-10-01
DE69914624D1 (en) 2004-03-11
GB9824550D0 (en) 1999-01-06
AU773380B2 (en) 2004-05-27
AU1058800A (en) 2000-05-29
ES2215408T3 (en) 2004-10-01
ATE259102T1 (en) 2004-02-15

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