GB1202194A - Switch for controlling a drive member - Google Patents

Switch for controlling a drive member

Info

Publication number
GB1202194A
GB1202194A GB4288966A GB4288966A GB1202194A GB 1202194 A GB1202194 A GB 1202194A GB 4288966 A GB4288966 A GB 4288966A GB 4288966 A GB4288966 A GB 4288966A GB 1202194 A GB1202194 A GB 1202194A
Authority
GB
United Kingdom
Prior art keywords
contacts
switch
sept
springs
leaf spring
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
GB4288966A
Inventor
Thomas Eric Greenwood
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.)
Tecalemit Engineering Ltd
Original Assignee
Tecalemit Engineering Ltd
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 Tecalemit Engineering Ltd filed Critical Tecalemit Engineering Ltd
Priority to GB4288966A priority Critical patent/GB1202194A/en
Publication of GB1202194A publication Critical patent/GB1202194A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition

Abstract

1,202,194. Retractive switches. TECALEMIT (ENG.) Ltd. 25 Sept., 1967 [26 Sept., 1966], No. 42889/66. Heading H1N. [Also in Division H2] A safety switch, for vehicle lifts for example (see Division H2), comprises two leaf springs 2 riveted to insulating strips 3a and 3b as shown such that deformation of the springs produces longitudinal movement of the strips and disengagement of contacts 4 and 5 carried thereon. The switch may be mounted beneath a hoist or lift platform (9, Fig. 4, not shown) by means of a strip (12) clamping the middle of the upper leaf spring thereto and another strip (12) may clamp the middle of the lower leaf spring to a suspended sensing framework (10) and net (11). The leaf springs 2 may be prestressed to tend to open the contacts (Fig. 3a, not shown) or to close the contacts (Fig. 3c, not shown), thereby allowing the sensitivity of the device to be predetermined. The contacts may be enclosed by a corrugated flexible sleeve (26, Fig. 3d, not shown).
GB4288966A 1966-09-26 1966-09-26 Switch for controlling a drive member Expired GB1202194A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4288966A GB1202194A (en) 1966-09-26 1966-09-26 Switch for controlling a drive member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4288966A GB1202194A (en) 1966-09-26 1966-09-26 Switch for controlling a drive member

Publications (1)

Publication Number Publication Date
GB1202194A true GB1202194A (en) 1970-08-12

Family

ID=10426407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4288966A Expired GB1202194A (en) 1966-09-26 1966-09-26 Switch for controlling a drive member

Country Status (1)

Country Link
GB (1) GB1202194A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees