US3594518A - Electric switches - Google Patents

Electric switches Download PDF

Info

Publication number
US3594518A
US3594518A US881078A US3594518DA US3594518A US 3594518 A US3594518 A US 3594518A US 881078 A US881078 A US 881078A US 3594518D A US3594518D A US 3594518DA US 3594518 A US3594518 A US 3594518A
Authority
US
United States
Prior art keywords
switch
distributor
reed contact
ignition
internal combustion
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 - Lifetime
Application number
US881078A
Inventor
Gordon Frederick Bates
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.)
AE PLC
Federal Mogul Coventry Ltd
ZF International UK Ltd
Original Assignee
Brico 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 Brico Engineering Ltd filed Critical Brico Engineering Ltd
Application granted granted Critical
Publication of US3594518A publication Critical patent/US3594518A/en
Assigned to AE PLC CAWSTON HOUSE CAWSTON, RUGBY WARWICKSHIRE ENGLAND reassignment AE PLC CAWSTON HOUSE CAWSTON, RUGBY WARWICKSHIRE ENGLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BRICO ENGINEERING LIMITED
Assigned to LUCAS INDUSTRIES PUBLIC LIMITED COMPANY, GREAT KING STREET, BIRMINGHAM, ENGLAND reassignment LUCAS INDUSTRIES PUBLIC LIMITED COMPANY, GREAT KING STREET, BIRMINGHAM, ENGLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AE PLC
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil
    • F02P7/0677—Mechanical arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/0053—Permanent magnet actuating reed switches periodically operated
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/0013—Permanent magnet actuating reed switches characterised by the co-operation between reed switch and permanent magnet; Magnetic circuits
    • H01H36/002—Actuation by moving ferromagnetic material, switch and magnet being fixed

Definitions

  • This invention relates to electric switches which are suitable for use as a trigger switch in a fuel injection system for a spark ignition internal combustion engine, in order to determine the instant of opening of one or more electrically actuated fuel injection valves.
  • the invention provides the combination of an ignition distributor and contact breaker assembly with an electric switch having a movable member for effecting operation of the switch, the arrangement being such that rotation of a part of the ignition distributor causes movement of the movable member of the switch to effect its operation.
  • the electric switch comprises one or more magnetically operable reed contact switches in combination with one or more magnet members for actuating the reed contact switch or switches.
  • the present invention relates to electric switches which are suitable for use as a trigger switch in a fuel injection system for a spark ignition internal combustion engine, in order to determine the instant of opening of one or more electrically actuated fuel injection valves.
  • the invention provides the combination of an ignition distributor and contact breaker assembly for a spark ignition internal combustion engine, and an electric switch including a movable member for effecting operation of said switch, the arrangement being such that rotation of a part of the ignition distributor causes movement of the movable member of said switch to effect operation of said switch.
  • an ignition distributor for an engine comprising a distributor body containing a contact breaker assembly for initiating ignition pulses, a unit comprising an electric switch adapted to operate as a trigger switch for a fuel injection system, said unit including a stationary part mounted on the distributor body and a rotatable portion carrying a movable operating member for said switch and which is connected to a drive shaft in the distributor body, a distributor cap mounted on the unit and containing contacts and a rotor arm to enable said ignition pulses to be distributed via said contacts to spark ignition devices, said rotor arm also being connected to the rotatable portion of said unit.
  • the electric switch may be of the type described in copending application Ser. No.
  • 767,218 and comprise one or more magnetically operable reed contact switches in combination with one or more magnet members for operating the reed contact switch or switches, either by relative movement between the reed contact switch or switches and the magnet member or members, or by providing a relatively movable magnetic shunt member between the or each reed contact switch and its operating magnet member.
  • FIG. 1 is a section on the line I] in FIG. 2 of one embodiment of the invention
  • FIG. 2 is a plan view of the same embodiment with the distributor cap removed, and
  • FIG. 3 is a sectional view, similar to FIG. 1, of a further embodiment.
  • a distributor comprises a body 1 containing a contact breaker assembly generally indicated at 2 and which is adapted to be connected to the low-tension section of an ignition coil for initiating the production of hightension ignition pulses in the high-tension section of the coil in accordance with well-known practice.
  • the contact breaker assembly comprises a cam 3 mounted on a drive shaft 4 which operates to make and break the contact breaker contacts.
  • the drive shaft 4 is driven from a spark ignition internal combustion engine to which the device is fitted.
  • An electric switch which is basically of the type disclosed in FIGS. 1 to 3 of copending application Ser. No. 767,218 forms part of a unit having a body portion 5 made of a nonmagnetic material such as a plastics material.
  • the lower face 5a of the body is shaped to fit on and locate with the upper face of the distributor body.
  • a rotatable hub portion 6 of the unit is keyed on to the upper end of the drive shaft 4 and carries a movable member 7 in the form of a dish-shaped magnetic shunt e.g. of mild steel, having a rim 7a provided with a cutout portion 8.
  • the body 5 also carries two diametrically spaced reed contact switches 9, as well as two magnet members 10 which are arranged one opposite each of the reed contact switches 9.
  • Connecting tags 16 are provided for making electrical connections to the reed contacts.
  • the upstanding rim 7a of the magnetic shunt member 7 can thus rotate in the gap between each reed contact switch 9 and its associated magnet member 10.
  • the upper edge 5b of the body 5 is shaped to receive and locate the lower edge of the distributor cap 11 which contains the peripherally disposed distributor contacts 12 and also the central high-tension contact 13 which engages with the conducting portion of a rotor arm 14.
  • the latter fits on and is keyed to the upper end of the hub portion 6.
  • the cap 11 is retained in position by the securing clips 15.
  • the contact breaker assembly 2 and rotor arm 14 Upon rotation of the drive shaft 4 the contact breaker assembly 2 and rotor arm 14 operate in the normal manner in association with an ignition coil to generate and distribute ignition pulses to spark ignition devices of an internal combustion engine, and the hub portion 6 drives the magnetic shunt member 7 in rotation so that the reed contact switches are operated when the cutout portion 8 in the rim 7a comes opposite each reed contact switch, thereby allowing the magnetic flux from the associated magnet to influence the reed contact switch.
  • FIG. 3 is a sectional view, similar to that of FIG. 1, of a further embodiment of the invention.
  • the body 5 carries two stationary diametrically spaced reed contact switches 9, but in this embodiment the rotatable hub portion 6 carries a radially extending magnet 10a, and the movable member 7 is omitted.
  • the magnet 10a operates each reed contact switch as it passes opposite to it.
  • This embodiment is therefore basically similar to that of FIG. 6 of copending application Ser. No. 767,218.
  • the present invention enables an electric switch as described in application Ser. No. 767,218 to be readily incorporated in a conventional type of ignition distributor which is particularly desirable where the electric switch is to be used to trigger a fuel injection system on an internal combustion en-' gine including such an ignition distributor.
  • the switch unit may comprise only one or more than two reed contact switches.
  • the switch unit may be constructed in accordance with various of the other arrangements disclosed in the aforementioned copending application.
  • each magnet member and the movable member may be movable together relative to the or each reed switch.
  • the unit may employ other types of trigger devices besides magnetic reed contact switches, for example magnetic or photoelectric devices.
  • An ignition distributor and contact breaker assembly for a spark ignition internal combustion engine having an electronically controlled fuel injection system, said assembly comprising a distributor body containing a contact breaker for initiating ignition pulses, a shaft rotatably supported in said body and adapted to be driven in timed relationship with the internal combustion engine, means secured to the shaft for periodically opening and closing the contact breaker, a distributor cap containing a plurality of contacts one of which is adapted to be connected to an ignition coil of the internal combustion engine and others of which are respectively adapted to be connected to spark ignition devices of the internal combustion engine, and a rotor arm arranged to be driven by said shaft and arranged to sequentially distribute the ignition pulses from said one contact to the other contacts, characterized in that there is further provided an electric switching device for producing timed trigger signals for the electronically controlled fuel injection system, said switching device being in the form of a unit comprising a housing of plastics materials having one of its oppositely disposed faces shaped to fit on and locate with the face of the distributor body disposed towards the distributor cap and having the other of
  • the electric switch comprises at least one magnetically operable reed contact switch in combination with at least one magnet member for actuating the reed contact switch.

Abstract

This invention relates to electric switches which are suitable for use as a trigger switch in a fuel injection system for a spark ignition internal combustion engine, in order to determine the instant of opening of one or more electrically actuated fuel injection valves. The invention provides the combination of an ignition distributor and contact breaker assembly with an electric switch having a movable member for effecting operation of the switch, the arrangement being such that rotation of a part of the ignition distributor causes movement of the movable member of the switch to effect its operation. Embodiments are described wherein the electric switch comprises one or more magnetically operable reed contact switches in combination with one or more magnet members for actuating the reed contact switch or switches.

Description

United States Patent [54] ELECTRIC SWITCHES 6Claims,3Drawing Figs.
52 u.s.c1 zoo/19M, 335/206, 123/148 DK 511 lnt.CI ..no11119/o0 [50] FieldofSearch zoo/19M- 335/206, 153; 15/113,118 E, 148 DK,
[56] References Cited UNlTED STATES PATENTS 3,087,030 4/1963 Shenabow ..200/l9 (M) UX Primary Examiner-J R. Scott Attorney-Holcombe, Wetherill & Brisebois ABSTRACT: This invention relates to electric switches which are suitable for use as a trigger switch in a fuel injection system for a spark ignition internal combustion engine, in order to determine the instant of opening of one or more electrically actuated fuel injection valves. The invention provides the combination of an ignition distributor and contact breaker assembly with an electric switch having a movable member for effecting operation of the switch, the arrangement being such that rotation of a part of the ignition distributor causes movement of the movable member of the switch to effect its operation. Embodiments are described wherein the electric switch comprises one or more magnetically operable reed contact switches in combination with one or more magnet members for actuating the reed contact switch or switches.
- PATENTEU M20197] 3594518 SHEET 2 (IF 2 ELECTRIC SWITCHES The present invention relates to electric switches which are suitable for use as a trigger switch in a fuel injection system for a spark ignition internal combustion engine, in order to determine the instant of opening of one or more electrically actuated fuel injection valves.
From one aspect the invention provides the combination of an ignition distributor and contact breaker assembly for a spark ignition internal combustion engine, and an electric switch including a movable member for effecting operation of said switch, the arrangement being such that rotation of a part of the ignition distributor causes movement of the movable member of said switch to effect operation of said switch.
From another aspect the invention provides an ignition distributor for an engine comprising a distributor body containing a contact breaker assembly for initiating ignition pulses, a unit comprising an electric switch adapted to operate as a trigger switch for a fuel injection system, said unit including a stationary part mounted on the distributor body and a rotatable portion carrying a movable operating member for said switch and which is connected to a drive shaft in the distributor body, a distributor cap mounted on the unit and containing contacts and a rotor arm to enable said ignition pulses to be distributed via said contacts to spark ignition devices, said rotor arm also being connected to the rotatable portion of said unit. The electric switch may be of the type described in copending application Ser. No. 767,218 and comprise one or more magnetically operable reed contact switches in combination with one or more magnet members for operating the reed contact switch or switches, either by relative movement between the reed contact switch or switches and the magnet member or members, or by providing a relatively movable magnetic shunt member between the or each reed contact switch and its operating magnet member.
The invention will now be further described by way of example with reference to the accompanying drawings, in which:
FIG. 1 is a section on the line I] in FIG. 2 of one embodiment of the invention,
FIG. 2 is a plan view of the same embodiment with the distributor cap removed, and
FIG. 3 is a sectional view, similar to FIG. 1, of a further embodiment.
Referring to FIGS. 1 and 2, a distributor comprises a body 1 containing a contact breaker assembly generally indicated at 2 and which is adapted to be connected to the low-tension section of an ignition coil for initiating the production of hightension ignition pulses in the high-tension section of the coil in accordance with well-known practice. The contact breaker assembly comprises a cam 3 mounted on a drive shaft 4 which operates to make and break the contact breaker contacts. The drive shaft 4 is driven from a spark ignition internal combustion engine to which the device is fitted.
An electric switch, which is basically of the type disclosed in FIGS. 1 to 3 of copending application Ser. No. 767,218 forms part of a unit having a body portion 5 made of a nonmagnetic material such as a plastics material. The lower face 5a of the body is shaped to fit on and locate with the upper face of the distributor body.
A rotatable hub portion 6 of the unit is keyed on to the upper end of the drive shaft 4 and carries a movable member 7 in the form of a dish-shaped magnetic shunt e.g. of mild steel, having a rim 7a provided with a cutout portion 8. The body 5 also carries two diametrically spaced reed contact switches 9, as well as two magnet members 10 which are arranged one opposite each of the reed contact switches 9. Connecting tags 16 are provided for making electrical connections to the reed contacts. The upstanding rim 7a of the magnetic shunt member 7 can thus rotate in the gap between each reed contact switch 9 and its associated magnet member 10. The upper edge 5b of the body 5 is shaped to receive and locate the lower edge of the distributor cap 11 which contains the peripherally disposed distributor contacts 12 and also the central high-tension contact 13 which engages with the conducting portion of a rotor arm 14. The latter fits on and is keyed to the upper end of the hub portion 6. The cap 11 is retained in position by the securing clips 15.
Upon rotation of the drive shaft 4 the contact breaker assembly 2 and rotor arm 14 operate in the normal manner in association with an ignition coil to generate and distribute ignition pulses to spark ignition devices of an internal combustion engine, and the hub portion 6 drives the magnetic shunt member 7 in rotation so that the reed contact switches are operated when the cutout portion 8 in the rim 7a comes opposite each reed contact switch, thereby allowing the magnetic flux from the associated magnet to influence the reed contact switch.
FIG. 3 is a sectional view, similar to that of FIG. 1, of a further embodiment of the invention. The same reference numerals have been used for corresponding parts. As in the previous embodiment, the body 5 carries two stationary diametrically spaced reed contact switches 9, but in this embodiment the rotatable hub portion 6 carries a radially extending magnet 10a, and the movable member 7 is omitted. In operation, as the hub portion 6 rotates with the drive shaft 4, the magnet 10a operates each reed contact switch as it passes opposite to it. This embodiment is therefore basically similar to that of FIG. 6 of copending application Ser. No. 767,218.
The present invention enables an electric switch as described in application Ser. No. 767,218 to be readily incorporated in a conventional type of ignition distributor which is particularly desirable where the electric switch is to be used to trigger a fuel injection system on an internal combustion en-' gine including such an ignition distributor.
Obviously various modifications and alternative constructions are possible. Thus the switch unit may comprise only one or more than two reed contact switches. Moreover the switch unit may be constructed in accordance with various of the other arrangements disclosed in the aforementioned copending application.
In particular the or each magnet member and the movable member may be movable together relative to the or each reed switch.
It will also be apparent that the unit may employ other types of trigger devices besides magnetic reed contact switches, for example magnetic or photoelectric devices.
I claim:
1. An ignition distributor and contact breaker assembly for a spark ignition internal combustion engine having an electronically controlled fuel injection system, said assembly comprising a distributor body containing a contact breaker for initiating ignition pulses, a shaft rotatably supported in said body and adapted to be driven in timed relationship with the internal combustion engine, means secured to the shaft for periodically opening and closing the contact breaker, a distributor cap containing a plurality of contacts one of which is adapted to be connected to an ignition coil of the internal combustion engine and others of which are respectively adapted to be connected to spark ignition devices of the internal combustion engine, and a rotor arm arranged to be driven by said shaft and arranged to sequentially distribute the ignition pulses from said one contact to the other contacts, characterized in that there is further provided an electric switching device for producing timed trigger signals for the electronically controlled fuel injection system, said switching device being in the form of a unit comprising a housing of plastics materials having one of its oppositely disposed faces shaped to fit on and locate with the face of the distributor body disposed towards the distributor cap and having the other of its oppositely disposed faces shaped to receive and locate with the underside of the distributor cap, at least one electric switch fixedly mounted in the annular housing, and a rotary member arranged to effect periodic opening and closing of the electric switch whereby to produce said timed trigger signals, the rotary member including a hub portion which fits coaxially between, and is keyed to, said rotor arm and the end of said shaft.
2. Apparatus as claimed in claim I, wherein the electric switch comprises at least one magnetically operable reed contact switch in combination with at least one magnet member for actuating the reed contact switch.
3. Apparatus as claimed in claim 2, wherein the magnet member is secured to the rotary member for rotation therewith.
4. Apparatus as claimed in claim 3, wherein the magnet member is disposed substantially radially of the rotary member.
5. Apparatus as claimed in claim 2, wherein the or each UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,594,518 Dated July 20, 1971 Inven r( GORDON F. BATES It is certified that error appears in the aboveidentified patent and that said Letters Patent are hereby corrected as shown below:
[45] Patented July 20, 1971 (SEAL) Attest:
EDWARD M.FLETCHER,JR.
ROBERT GOTTSCHALK Attesting Officer Acting Commissioner of Patents FORM PC4050 (ID-69) USCOMM-DC 6O376-F'69 u 5. GOVERNMENT PRINTING orrlcr. I: o-sssqu

Claims (6)

1. An ignition distributor and contact breaker assembly for a spark igniTion internal combustion engine having an electronically controlled fuel injection system, said assembly comprising a distributor body containing a contact breaker for initiating ignition pulses, a shaft rotatably supported in said body and adapted to be driven in timed relationship with the internal combustion engine, means secured to the shaft for periodically opening and closing the contact breaker, a distributor cap containing a plurality of contacts one of which is adapted to be connected to an ignition coil of the internal combustion engine and others of which are respectively adapted to be connected to spark ignition devices of the internal combustion engine, and a rotor arm arranged to be driven by said shaft and arranged to sequentially distribute the ignition pulses from said one contact to the other contacts, characterized in that there is further provided an electric switching device for producing timed trigger signals for the electronically controlled fuel injection system, said switching device being in the form of a unit comprising a housing of plastics materials having one of its oppositely disposed faces shaped to fit on and locate with the face of the distributor body disposed towards the distributor cap and having the other of its oppositely disposed faces shaped to receive and locate with the underside of the distributor cap, at least one electric switch fixedly mounted in the annular housing, and a rotary member arranged to effect periodic opening and closing of the electric switch whereby to produce said timed trigger signals, the rotary member including a hub portion which fits coaxially between, and is keyed to, said rotor arm and the end of said shaft.
2. Apparatus as claimed in claim 1, wherein the electric switch comprises at least one magnetically operable reed contact switch in combination with at least one magnet member for actuating the reed contact switch.
3. Apparatus as claimed in claim 2, wherein the magnet member is secured to the rotary member for rotation therewith.
4. Apparatus as claimed in claim 3, wherein the magnet member is disposed substantially radially of the rotary member.
5. Apparatus as claimed in claim 2, wherein the or each magnet member is fixedly mounted in the annular housing adjacent its respective reed contact switch, and a magnetic shunt member is secured to the rotary member for rotation therewith, the magnetic shunt member being movable between the or each reed contact switch and its respective magnet member.
6. Apparatus as claimed in claim 5, wherein the magnetic shunt member includes an aperture which allows a magnet member to actuate its respective reed contact switch only when the aperture is disposed between the magnet member and the reed contact switch.
US881078A 1968-12-13 1969-12-01 Electric switches Expired - Lifetime US3594518A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB59548/68A GB1285700A (en) 1968-12-13 1968-12-13 Improvements in ignition distributors

Publications (1)

Publication Number Publication Date
US3594518A true US3594518A (en) 1971-07-20

Family

ID=10483974

Family Applications (1)

Application Number Title Priority Date Filing Date
US881078A Expired - Lifetime US3594518A (en) 1968-12-13 1969-12-01 Electric switches

Country Status (5)

Country Link
US (1) US3594518A (en)
JP (1) JPS5018126B1 (en)
DE (1) DE1962148A1 (en)
FR (1) FR2026123A1 (en)
GB (1) GB1285700A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789168A (en) * 1973-01-10 1974-01-29 Chrysler Corp Ignition distributor device with insulative shutter type rotor
US3792261A (en) * 1972-08-16 1974-02-12 Texaco Inc Adaptable photoelectric automotive distributor combination
US4044747A (en) * 1975-02-04 1977-08-30 British Leyland Uk Limited Spark ignition engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087030A (en) * 1960-06-03 1963-04-23 Sperry Rand Corp Magnetically controlled commutator devices
US3284740A (en) * 1965-07-15 1966-11-08 Motorola Inc Electronic ignition system with encapsulated reed device and conducting sleeve thereabout forming a flux filter
US3375812A (en) * 1964-12-10 1968-04-02 Mitsubishi Electric Corp Ignition device for internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087030A (en) * 1960-06-03 1963-04-23 Sperry Rand Corp Magnetically controlled commutator devices
US3375812A (en) * 1964-12-10 1968-04-02 Mitsubishi Electric Corp Ignition device for internal combustion engine
US3284740A (en) * 1965-07-15 1966-11-08 Motorola Inc Electronic ignition system with encapsulated reed device and conducting sleeve thereabout forming a flux filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792261A (en) * 1972-08-16 1974-02-12 Texaco Inc Adaptable photoelectric automotive distributor combination
US3789168A (en) * 1973-01-10 1974-01-29 Chrysler Corp Ignition distributor device with insulative shutter type rotor
US4044747A (en) * 1975-02-04 1977-08-30 British Leyland Uk Limited Spark ignition engine

Also Published As

Publication number Publication date
GB1285700A (en) 1972-08-16
FR2026123A1 (en) 1970-09-11
DE1962148A1 (en) 1970-07-02
JPS5018126B1 (en) 1975-06-26

Similar Documents

Publication Publication Date Title
US5829987A (en) Electromechanical connection device
US2929896A (en) Circuit controller
US3418610A (en) Magnetic reed switch
US3594518A (en) Electric switches
US3780245A (en) Rotary switch with enlarged shaft journaled in and removable through switch cover
US3916863A (en) Electrical signal generating device for use in combustion engines
US3976044A (en) Breakerless distributor with substitutional interrupter array
GB1377952A (en) Electric switch
US3597714A (en) Magnetic rotary switch
US3308341A (en) Transistorized ignition system utilizing a magnetically actuated reed switch
US3675636A (en) Ignition device for internal combustion engines
US2501431A (en) Multiple contact switch
US3284740A (en) Electronic ignition system with encapsulated reed device and conducting sleeve thereabout forming a flux filter
CA2049605A1 (en) Timing mechanism with momentary switch
GB1449418A (en) Switching mechanism eg for an alarm timepiece
US3961604A (en) Magnetic trigger device for two group fuel injection system
US3139081A (en) Distributor advance mechanism
US3652814A (en) Reciprocating and rotatable cam actuating means for electromechanical timers
US3798396A (en) Ignition point assembly with guide posts for movable contact
US3766339A (en) Circuit interruptor for ignition system with improved rotary contact
US3517142A (en) Ignition distributor with radially removable contact mechanism and terminal means
US3221213A (en) Position-indicating apparatus and ignition system employing same
US4004560A (en) Interrupter for the ignition system of internal combustion engines
US3501601A (en) Ignition distributors
US4074093A (en) Switching mechanism in an electronic watch

Legal Events

Date Code Title Description
AS Assignment

Owner name: AE PLC CAWSTON HOUSE CAWSTON, RUGBY WARWICKSHIRE E

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BRICO ENGINEERING LIMITED;REEL/FRAME:004297/0057

Owner name: LUCAS INDUSTRIES PUBLIC LIMITED COMPANY, GREAT KIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AE PLC;REEL/FRAME:004297/0061