GB1409004A - Alarms - Google Patents

Alarms

Info

Publication number
GB1409004A
GB1409004A GB1641073A GB1641073A GB1409004A GB 1409004 A GB1409004 A GB 1409004A GB 1641073 A GB1641073 A GB 1641073A GB 1641073 A GB1641073 A GB 1641073A GB 1409004 A GB1409004 A GB 1409004A
Authority
GB
United Kingdom
Prior art keywords
speed
division
shaft
arrangement
alarms
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
GB1641073A
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.)
Dickey John Corp
Original Assignee
Dickey John 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 Dickey John Corp filed Critical Dickey John Corp
Priority to GB1641073A priority Critical patent/GB1409004A/en
Publication of GB1409004A publication Critical patent/GB1409004A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/484—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by contact-making switches
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/07—Indicating devices, e.g. for remote indication
    • G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
    • G01P1/10—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds
    • G01P1/106—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds by comparing the time duration between two impulses with a reference time

Abstract

1409004 Speedometers DICKEY-JOHN CORP 5 April 1973 16410/73 Heading G1K [Also in Division H3] A speedometer arrangement includes a shaft 24, magnet 26 and a speed switch 28 for generating pulses at a rate proportional to the speed of shaft 24 and an arrangement (see also Division H3] for activating an alarm 38 (visible and audible) when the speed falls below a predetermined threshold.
GB1641073A 1973-04-05 1973-04-05 Alarms Expired GB1409004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1641073A GB1409004A (en) 1973-04-05 1973-04-05 Alarms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1641073A GB1409004A (en) 1973-04-05 1973-04-05 Alarms

Publications (1)

Publication Number Publication Date
GB1409004A true GB1409004A (en) 1975-10-08

Family

ID=10076826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1641073A Expired GB1409004A (en) 1973-04-05 1973-04-05 Alarms

Country Status (1)

Country Link
GB (1) GB1409004A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012531A1 (en) * 1990-02-09 1991-08-22 Ducati Energia S.P.A. Method and fast reacting switching circuit for controlling the rotational speed of rotating body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012531A1 (en) * 1990-02-09 1991-08-22 Ducati Energia S.P.A. Method and fast reacting switching circuit for controlling the rotational speed of rotating body

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee