GB1136197A – Time delay relay
– Google Patents
GB1136197A – Time delay relay
– Google Patents
Time delay relay
Info
Publication number
GB1136197A
GB1136197A
GB18996/67A
GB1899667A
GB1136197A
GB 1136197 A
GB1136197 A
GB 1136197A
GB 18996/67 A
GB18996/67 A
GB 18996/67A
GB 1899667 A
GB1899667 A
GB 1899667A
GB 1136197 A
GB1136197 A
GB 1136197A
Authority
GB
United Kingdom
Prior art keywords
heater
load
energized
coil
cold
Prior art date
1966-04-29
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
GB18996/67A
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.)
Wagner Electric Corp
Original Assignee
Wagner Electric 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.)
1966-04-29
Filing date
1967-04-25
Publication date
1968-12-11
1967-04-25
Application filed by Wagner Electric Corp
filed
Critical
Wagner Electric Corp
1968-12-11
Publication of GB1136197A
publication
Critical
patent/GB1136197A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
H01H43/30—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action
H01H43/308—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the change of electrical properties, e.g. thermistors
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
H01H43/30—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action
H01H43/301—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material
H01H43/302—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material of solid bodies
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H61/00—Electrothermal relays
H01H61/06—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts
H01H61/066—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts making use of an extensible wire, rod or strips
Abstract
1,136,197. Thermal flashers. WAGNER ELECTRIC CORP. 25 April, 1967 [29 April, 1966], No. 18996/67. Heading H1N. A snap-action switch comprises a buckling vane 10 with a natural curvature about a longitudinal axis (14, Fig. 1) provided with expansible pull means 16 secured to diagonally opposite corners on the naturally convex side so as to bow the vane when cold so that it is concave on the pull means side about an axis perpendicular to the longitudinal axis. A resistance coil 22 having a positive temperature coefficient of resistance, e.g. Ni alloy, is connected in parallel across said pull means 16 by a permanent junction 28 and contacts 20, 21 which close when means 16 is cold. A heater 30 is connected across said pull means 16 by junction 28 and contacts 19, 18 which close when means 16 is cold. A load 36 is energizable through contacts 31, 32, which close when means 16 is hot. When switch S is closed and a potential applied across terminals 6, 8 heater 30 and coil 22 are energized. As coil 22 is heated by heater 30, its resistance increases, thus causing the current through pull means 16 to increase sufficiently to expand means 16 to snap vane 10. Load 36 is energized and coil 22 and heater 30 are de-energized. The pull means 16 is maintained expanded till the potential is removed by the current therethrough. While load 36 is energized coil 22 and heater 30 cool to allow the switch to reset. In a modification (Fig. 4), the permanent junction 28 is replaced by contacts (42, 44) which close when the means 16 is cold and are connected to an additional load (38). In the hot condition, there is no current through the pull means 16; it is maintained expanded by an additional heater (46) adjacent or wound about it and energized with load 36. The load 36 may be a warning signal light on a motor vehicle.
GB18996/67A
1966-04-29
1967-04-25
Time delay relay
Expired
GB1136197A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US54622966A
1966-04-29
1966-04-29
Publications (1)
Publication Number
Publication Date
GB1136197A
true
GB1136197A
(en)
1968-12-11
Family
ID=24179440
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB18996/67A
Expired
GB1136197A
(en)
1966-04-29
1967-04-25
Time delay relay
Country Status (3)
Country
Link
US
(1)
US3505642A
(en)
DE
(1)
DE1639024A1
(en)
GB
(1)
GB1136197A
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3631370A
(en)
*
1969-10-01
1971-12-28
Sylvania Electric Prod
High-current, hot wire relay and flasher
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2719893A
(en)
*
1953-05-13
1955-10-04
Servomechanisms Inc
Snap action device
US2756305A
(en)
*
1953-06-22
1956-07-24
Phillips Petroleum Co
Time delay switch
US2945933A
(en)
*
1957-11-14
1960-07-19
Cts Corp
Electric circuit controlling device
1966
1966-04-29
US
US546229A
patent/US3505642A/en
not_active
Expired – Lifetime
1967
1967-04-25
GB
GB18996/67A
patent/GB1136197A/en
not_active
Expired
1967-04-28
DE
DE19671639024
patent/DE1639024A1/en
active
Pending
Also Published As
Publication number
Publication date
DE1639024B2
(en)
1970-12-10
DE1639024A1
(en)
1970-01-15
US3505642A
(en)
1970-04-07
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None