GB1275566A - Improvements relating to electric control circuits - Google Patents
Improvements relating to electric control circuitsInfo
- Publication number
- GB1275566A GB1275566A GB40229/69A GB4022969A GB1275566A GB 1275566 A GB1275566 A GB 1275566A GB 40229/69 A GB40229/69 A GB 40229/69A GB 4022969 A GB4022969 A GB 4022969A GB 1275566 A GB1275566 A GB 1275566A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- socket
- control
- single frequency
- signal
- 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
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lock And Its Accessories (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
1275566 Releasable fastenings T M MARGESON and H W DENNY 12 Aug 1969 [15 Aug 1968] 40229/69 Heading E2A An electrical control circuit includes a single frequency generating means 16 forming a first part of said circuit, single frequency matching means 32 forming a second part of said circuit for receiving said single frequency and generating a control signal when said single frequency is received, each of said frequency means including a crystal control element for permitting precise frequency matching, the control element of the first part of said circuit being insertable therein or removable therefrom to activate or deactive the circuit respectively. As shown the means 16 is connected to an amplifier unit 26 which amplifies the oscillations from the means 16 and these are passed along a co-axial cable 28, 30 to the means 32 the crystal control element of which has the same operating frequency as the crystal control element 22 of the means 16 thus the means 32 will only pass a signal through it when the element 22 is in the means 16; from the means 32 the signal is passed through a unit 34 where it is amplified and subsequently rectified and the resulting direct current is carried along lines 36, 38 to the control gate of a thyristor 42 the signal turns the thyristor on so that a relay 46 is energised to cause its contacts 50 to close to control a load connected to the contacts by lines 54, 56. The circuit can be used for controlling the operation of the ignition coil of a motor vehicle in which case the element 22 is mounted in a member similar in shape to a key and which can be plugged into a socket connected to the remainder of the circuit; the member shaped like a key also acts to connect a battery to the circuit when it is plugged into the socket as well as connecting the element 22 into the circuit. The circuit can in addition be used to control a bonnet lock which is only released when the key shaped member is in the socket so that the circuit cannot be bypassed. All the components of the oscillator unit except the crystal and the first amplifier unit can be mounted on the socket with the remainder of the circuit connected to the socket by the co-axial cable.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US75297168A | 1968-08-15 | 1968-08-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1275566A true GB1275566A (en) | 1972-05-24 |
Family
ID=25028634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB40229/69A Expired GB1275566A (en) | 1968-08-15 | 1969-08-12 | Improvements relating to electric control circuits |
Country Status (4)
Country | Link |
---|---|
US (1) | US3515891A (en) |
DE (1) | DE1941516A1 (en) |
FR (1) | FR2019346A1 (en) |
GB (1) | GB1275566A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3738444A (en) * | 1971-07-12 | 1973-06-12 | J Roby | Anti-theft system for a vehicle |
SE391900B (en) * | 1974-02-11 | 1977-03-07 | Asea Ab | DEVICE FOR VEHICLE IGNITION SYSTEM |
US4148372A (en) * | 1977-09-21 | 1979-04-10 | General Motors Corporation | Resistor coded theft deterrent system |
US4209709A (en) * | 1978-09-05 | 1980-06-24 | BBJ Laboratories | Anti-theft ignition system |
JPH0747905B2 (en) * | 1986-11-14 | 1995-05-24 | 本田技研工業株式会社 | Anti-theft device for vehicle |
AU4795890A (en) * | 1989-06-01 | 1990-12-06 | Boeing Company, The | Security lock for electrical equipment |
CN103236368B (en) * | 2013-04-02 | 2015-03-11 | 哈尔滨工业大学 | Multifunctional trigger device on basis of displacement input |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3222534A (en) * | 1961-10-11 | 1965-12-07 | Charles H Scott | Electrical element and switching means |
US3136307A (en) * | 1961-12-18 | 1964-06-09 | Joseph D Richard | Vehicle starting system |
US3425033A (en) * | 1965-10-22 | 1969-01-28 | Charles E Pfund | Automobile theft alarm |
US3428033A (en) * | 1967-06-01 | 1969-02-18 | Emerson Electric Co | Pulse controlled mechanism security system |
-
1968
- 1968-08-15 US US752971A patent/US3515891A/en not_active Expired - Lifetime
-
1969
- 1969-08-12 GB GB40229/69A patent/GB1275566A/en not_active Expired
- 1969-08-14 DE DE19691941516 patent/DE1941516A1/en active Pending
- 1969-08-14 FR FR6928146A patent/FR2019346A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
US3515891A (en) | 1970-06-02 |
DE1941516A1 (en) | 1970-02-19 |
FR2019346A1 (en) | 1970-07-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Nutting et al. | The influence of stacking-fault energy on the modes of deformation of polycrystalline copper alloys | |
EP0161365A3 (en) | Self-contained anti-theft device for motor vehicles | |
GB1275566A (en) | Improvements relating to electric control circuits | |
GB1487982A (en) | Remote power control apparatus | |
GB1104517A (en) | A contact-less ignition system | |
GB1206333A (en) | Anti-theft device | |
GB1437049A (en) | Electronic ignition systems | |
GB1437390A (en) | Motor vehicle door locks | |
US2492077A (en) | Electric circuit and a safety switch therefor | |
IE36132L (en) | Safety circuit for electric motor | |
US3112475A (en) | Annunciator system | |
GB1137045A (en) | Frequency sensing circuit | |
GB968041A (en) | Improvements in or relating to apparatus for testing or monitoring the value of a quantity | |
GB1273782A (en) | Improvements in or relating to protective circuits | |
GB1188912A (en) | Means for Varying the Resonant Frequency of a Cavity. | |
GB1459433A (en) | Remote control system | |
GB1224208A (en) | Improvements in proximity switches | |
GB1091372A (en) | Safety remote control system for a motor or plurality of motors | |
FR2365035A1 (en) | Electronic anti-theft system for vehicle - includes alarm actuated by door switch and ignition circuit requiring component included in coded key | |
GB1128733A (en) | Anti-theft devices | |
GB1258120A (en) | ||
GB1365880A (en) | Vehicle ignition systems | |
GB667354A (en) | Compass system | |
GB1219151A (en) | Circuit arrangement preferably for the supply of current to the electrical system of a vehicle | |
ES476501A1 (en) | Improvements introduced in electronic antirobes. (Machine-translation by Google Translate, not legally binding) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |