CA1096255A - Method to prevent unauthorized use of combustion engine driven vehicles, ships, other equipment including combustion engines only and a device according to the method - Google Patents
Method to prevent unauthorized use of combustion engine driven vehicles, ships, other equipment including combustion engines only and a device according to the methodInfo
- Publication number
- CA1096255A CA1096255A CA280,050A CA280050A CA1096255A CA 1096255 A CA1096255 A CA 1096255A CA 280050 A CA280050 A CA 280050A CA 1096255 A CA1096255 A CA 1096255A
- Authority
- CA
- Canada
- Prior art keywords
- attachment
- tubular member
- locking
- tubular
- piston
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
- B60R25/045—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor by limiting or cutting the electrical supply to the propulsion unit
-
- 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
- F02P11/00—Safety means for electric spark ignition, not otherwise provided for
- F02P11/04—Preventing unauthorised use of engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Spark Plugs (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Tires In General (AREA)
- Fireproofing Substances (AREA)
- Lubricants (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A method and a device t,o prevent unauthorized use oi` combustion engine driven ~ehicles~ .ships, equipmentg as ~ell as engrines on1y3 includîng the sl,eps to remove at, least one spark plug3 to attach a device having an externally threaded part as replacernent for the removed spa~k plug(s~, said par~ having an embracing loutsi~e memberg which by means o~ a lockin,.g mechanism can be brought into a freely rotata~le state in relation to the t.hreaded member, tlhus preventing removal of same, or, alterr-~at.i.vely~ bring sai.d melllbers into an inter-locked relationship, thus enabling the device to be attached or removed frolll the engine.
A method and a device t,o prevent unauthorized use oi` combustion engine driven ~ehicles~ .ships, equipmentg as ~ell as engrines on1y3 includîng the sl,eps to remove at, least one spark plug3 to attach a device having an externally threaded part as replacernent for the removed spa~k plug(s~, said par~ having an embracing loutsi~e memberg which by means o~ a lockin,.g mechanism can be brought into a freely rotata~le state in relation to the t.hreaded member, tlhus preventing removal of same, or, alterr-~at.i.vely~ bring sai.d melllbers into an inter-locked relationship, thus enabling the device to be attached or removed frolll the engine.
Description
2~
The pressnt inv~ntion relates to a method to prsvsnt unauthorized use of combustion engina-driven vehiclss, ships~other 0quipmant, as wsll as combu~tion enginss only, and a d~vice according to th0 method.
It is previDusly known a demand for a ~sthod to pr~vent ths~t of combustion ~ngin~-d~iven ~ah~cles, aquipment, ships and othar devic~s, e.g. th~ft of cars, mopeds, motorcyclas, small maritime crafts, ~tc., which are ~ery dasirable, since they can easily be transportsd away from ons location to anothar, whereaftar existing locking devices are brought out of function.
Th~ objsct of tha present inven$ion i~ to disclose a method to establish an e~f~ctiva protection againQt unsuthorizad u~a, e g. in connection with theft, thus indirectly acting as a th~t prevention protoction, ~ince th~ft does not make it possible to us~ th~ stol~n object. The present invantion also concerns a d~vic8, intended to be sttachsd to a combustion engine, which rnakes it possibls to utiliz~ the mathod.
Previously known m0thods to prevent use of vahiclas or other objects p~opelled by combustion engins3 includ0 eonventional locking dsvic~ e.gO
steering wheel locks, gear stick locks and locklng means for a wh0sl of a mopsd or a motorcycl2, locking means pr~vanting rsmoval of outhoard engines and other similar locking dGvic2s, and locking davices ~or the ignitinn~ which pravsnt olo~ing o~ the slectrical circuit o~ the ignition systsm if a key b~longing to ths lock is not available. Th~ last-mentioned typs of locks can bs aasily by passad with ra~psct to th2 ignition oircuit~ and ths circuit to the slsctrical starter motor can also ~asily be by-pass2d ~or thosa asss, wh~n th~ start~r motor circuit forms a part influenc~d by the ignition lock mechani~m.
Ths method, and th~ d~vice for utilizing the msthod aocording to the prescnt invention~ i~ based on a completely diff~r0nt and novel msthod3 but could basically be r~gard~d as an improvement o~ th~ protection for ths ignition circuit. The posqibility to by-pa3s is completely sliminated9 as wall as the possibility to r~movs ths devica according to tha invflntion for an unauthorized perYon~ It i8 0a~ily undsr~tood that th~
pos~ibility for unauthorizsd use is hereby oompletQly aliminstHd, and that previously knewn thsPt protection maans do not have this security.
An ambodiment of a devica according to the method in respect of the pressnt invention is more ~ully described bslow with rsParsnca to tha snclosed drawings, and the mainly charaoteristic fsature~ D~ the msthod according to the preaent invantion 9 and Por the davic~ acoording to ths mathod, ara disclDsad in tha Pollowing desoriptiva part of the ~p~oification and the claims.
Figure 1 i3 a cross-s~ctional view o~ an ambodiment of a davicu according to the method disclosad in th~ present invention, attaohsd to tha cylinder hsad ~f a ~mbusti~n engine;
Flgure 2 iæ a plan view Prom above of the device a~ shown in FigA
1, tha ~rr~unding tubular part oeing shown in crn~s-~ection at a point below ths horl~ontal oloYed portion of tha tubular part;
Figure 3 is a cross-seotional view corresponding to Figr 1 with th~ devica in the locked positlon which pre~ents ramoval o~ ths d~vioe by un-authorized person~; and Figur~ 4 is a cross-sectional view correRpondlng to Fig. 1 ~P a slightly modified embodiment of a davica ~r utilizing the msthod acoording 2û to the prssent invention.
With referencs to Flgura 1, re~erence numeral 1 indlcat~s a ~urrounding tubular member~ rotatably connacted to an attachmant member 2 havdng an sxternal screw thread. Said attachm~nt i8 in tha shown embodlment accomplishad by msan3 of an intarnal groove arrangao in the lower part of the t~bular member 1, which, by mean~ of a spring ring 3, is attached to a corresponding external groove in the upper portion o~
ths attachment member 2. The method to join the tubular member 1 and the attachment ~zmber 2 can obviously be variad in a large numb~r of previou~ly known ways, e~g. by arranging tha attachmant memb~r 2 with an sxternal surroanding flange anà the tubular member 1 with a groove by the internal ~ree edge portion, whereafter the tubular memb~r 1 i~ attaohed rotatably with th~ surrounding flangs of the attachment mamb~r 2, e~g.
by means Df ds~ormation. Further variation3 in ths method to accomplish ~aid ~ 3 --attach~ent are previously w811 known and th~re~ore n~ discuss~d.
The tubular mambar embraces a locking mechanigm 4, erranged with a number of locking mamb~rs 5, 5', 5~'9 which are arranged to int~rlock with co-operating interlncking means, such as grooves or similar, arr~nged both at the inside peripheral p~rt o~ the tubular member 1 and th~ surfaca facing the locking mechanism 4 of the attachment memb3r 2.
In Figures 1 and 2 are the davice shown with the locking memb~rs 5, 5', 5" arranged in a position extending away from the locking meohanism 4, i.e~ in interlocking contact with both the tubular mambsr 1 and the lû attaohment member 2~ S~id members 1 and 2 are thus joinsd to sach other in a non-rot~table or movable r01ationship, which makss it po~sible to transfer a rotating movement ~rom the tubular mHmbsr 1 to the ~tt~ohment membar 2. The tubular member i8 in tho ~hown smbodiment arrang~d with an external hHxagonal shape, which maks3 it possibls to attaoh a conventional spanner o~ spark plug type.
Said embodiment is attached to the cylinder he~d of a cumbustion sngine in the ~ollowlng manner. First i9 a spark plug, attached to tha cylindHr head, removsd, whereafter the devioa, with ths locking mechanism 4 in such 8 state that tha locking members 5, 5', 5" are arrangad in a position corresponding to F~guras 1 and 2~ i~ screwad into the oylinder head in a way corrssponding to a spark plug. When th2 davice ha~ been attached in a describ~d mann0r, the locking m0chanism 4 is inPluenced by means of a key 6 (only partly shown) in such a way, that the locking membars 5, S~, S~' are retracted to a position embraced by the locking mechanism 43 as shown in Fig. 3. The tubular mEmb0r 1 is thus "rsle~d" ~rom the attaohment member 2~ a~ well as thH locking mechanism 4 ~rom both the tubular member 1 and the attachm0nt member 2. The davice can hareby not be remoued from the cylinder head 9 since both the tubular membar 1 and the locking merhanism 4 fre~ly can be rotated in relation to thH attachment mamber 2~ The 0ngin0 cannot-now be usad, 9ino9 there is no pos~ible way to sttaoh a spark plug.
In Figure~ 1 and 3, the portion of th~ attaohment mHmb~r 2 directed towards the piston in the engine is shown ~ point~d member 75 in order to accomplish daformation o~ th~ pi~ton in the engln~ in connection with unauthori~ed attempt to start th~ snginQ with the device attachsd. Said de~ormation pr~vsnts th~ piston from running and functioning as d~sired in ths cylinder, but also obvi~usly a damag~ that will require rapair and thus rspair costs.
An altarnative smbod~m~nt is shown in Fig. 47 according to which the pointe~ portion 7 is arranged with a thr~aded part 9 arranged to facilitato attachm~nt to a hole with a corresponding int~rnal scr0w thrsad arrangad in the attachment membsr 2. Hareby it is possibla to chDos~ whsthsr or not this ~xtra th~ft-pr~ventive m~anq should ba used sr not~ which can bs regardsd as necassary in certain cases, e.g. if ths device is used to raplace one spark plug only in a multi-cylind~r en9ine, such a~ 4- 9 6~ or 8-cylinder engines~ in which cage~ th2 englnQ can ~unction with low e~iciency even if one spark plug i9 mis~ing. Tha point~d part can b~ dismissed for multi-cylinder sngines9 provid~d that two or more dsvices according to th~
present invsntion ars att~ch~d.
The shown and d~so~bed ~mbodiment, with modi~ication ac¢ording to Fig. 4, i9 only int~ndad to serve as an exampl~ o~ an ~mbodiment within th~ scope oF ths pressnt invention, which mothod basically compris~s of ths use o~ a lockable d~vice att~chsd in po ition o~ a removed spark plug or a numbsr of spark plugs in a combustion ~ngins, which permit altsrnativaly a locksd, and a rotabls ioint with an attachmsnt m~mb~r having an extsrnal screw thread corresponding to the extsrnal thr~ad o~ the removed spark plug.
Ths t~bular m~mb~r i8 also pr~rably arrang~d with an extsrnal shap~ corre~
ponding to ths portion of tho spark plug ussd ~or interlock1ng purpos3s with a tubular spanner o~ spark plug typs9 whsreby attachmsnt, ~nd removal, can b~ carrisd out using conventional toal31 providsd that ths lwking mechanism has bs~n brought to unrotatably Join the attachmQrlt memb~r and the tubular member~
Ths locking msmber~ 5~ 5', 5~, forming a park o~ the locking machaniqm 47 aro prsferably arranged springloaded in such a way that a locking movament by means of tha correspondingrnkay ~ causas ths locking mambers 5, 5', 5" to take up contact with tha insid~ peripheral sur~acs of tha tubular m~rnber 1 and tho uppar plana of tha attachment m~mber 2 respectively, so that tha \
locking mambers interlock with resp0ctiv~ part9 l and 2, a~ ~oon as tha tubular member has bean rotatad to surh a position, that the locking m~mb~r~
S, 5~, 5" can intarlDck with the co-acting intarlocking maans arrangad in tha member~ l and 2 respectively.
Tha tubular member l is al90 pre~erably manu~artursd ~rom.a material with high resistanca against appliad outsida ~orca, a.g~ hardenad stesl or carbide ~tael. Haraby ara all attempts to bring th~ davice out of order by m0ans o~ fDrcas applisd to the tubular member l effectively prevanted.
It should also ba emphasized that the shown embodim0nt can be modifiad in a larga numbar of ways,without depsrting ~rom tha important and charactaristio Faatures of tha method according to tha prasant invention.
Thu.Q, it is possible in certain cases to arranga tha locking mechanism 4 attach0d to either thQ tubular memb~r l or tha attachment membar 29 having lock7ng mambars 59 51, 511, which can ~ake up an interlock2d relationship with the remaining mambar.
Also, many othar embodiments ara possibl~ within tha scope o~ the invantiva thought and the ~ollowing claims.
The pressnt inv~ntion relates to a method to prsvsnt unauthorized use of combustion engina-driven vehiclss, ships~other 0quipmant, as wsll as combu~tion enginss only, and a d~vice according to th0 method.
It is previDusly known a demand for a ~sthod to pr~vent ths~t of combustion ~ngin~-d~iven ~ah~cles, aquipment, ships and othar devic~s, e.g. th~ft of cars, mopeds, motorcyclas, small maritime crafts, ~tc., which are ~ery dasirable, since they can easily be transportsd away from ons location to anothar, whereaftar existing locking devices are brought out of function.
Th~ objsct of tha present inven$ion i~ to disclose a method to establish an e~f~ctiva protection againQt unsuthorizad u~a, e g. in connection with theft, thus indirectly acting as a th~t prevention protoction, ~ince th~ft does not make it possible to us~ th~ stol~n object. The present invantion also concerns a d~vic8, intended to be sttachsd to a combustion engine, which rnakes it possibls to utiliz~ the mathod.
Previously known m0thods to prevent use of vahiclas or other objects p~opelled by combustion engins3 includ0 eonventional locking dsvic~ e.gO
steering wheel locks, gear stick locks and locklng means for a wh0sl of a mopsd or a motorcycl2, locking means pr~vanting rsmoval of outhoard engines and other similar locking dGvic2s, and locking davices ~or the ignitinn~ which pravsnt olo~ing o~ the slectrical circuit o~ the ignition systsm if a key b~longing to ths lock is not available. Th~ last-mentioned typs of locks can bs aasily by passad with ra~psct to th2 ignition oircuit~ and ths circuit to the slsctrical starter motor can also ~asily be by-pass2d ~or thosa asss, wh~n th~ start~r motor circuit forms a part influenc~d by the ignition lock mechani~m.
Ths method, and th~ d~vice for utilizing the msthod aocording to the prescnt invention~ i~ based on a completely diff~r0nt and novel msthod3 but could basically be r~gard~d as an improvement o~ th~ protection for ths ignition circuit. The posqibility to by-pa3s is completely sliminated9 as wall as the possibility to r~movs ths devica according to tha invflntion for an unauthorized perYon~ It i8 0a~ily undsr~tood that th~
pos~ibility for unauthorizsd use is hereby oompletQly aliminstHd, and that previously knewn thsPt protection maans do not have this security.
An ambodiment of a devica according to the method in respect of the pressnt invention is more ~ully described bslow with rsParsnca to tha snclosed drawings, and the mainly charaoteristic fsature~ D~ the msthod according to the preaent invantion 9 and Por the davic~ acoording to ths mathod, ara disclDsad in tha Pollowing desoriptiva part of the ~p~oification and the claims.
Figure 1 i3 a cross-s~ctional view o~ an ambodiment of a davicu according to the method disclosad in th~ present invention, attaohsd to tha cylinder hsad ~f a ~mbusti~n engine;
Flgure 2 iæ a plan view Prom above of the device a~ shown in FigA
1, tha ~rr~unding tubular part oeing shown in crn~s-~ection at a point below ths horl~ontal oloYed portion of tha tubular part;
Figure 3 is a cross-seotional view corresponding to Figr 1 with th~ devica in the locked positlon which pre~ents ramoval o~ ths d~vioe by un-authorized person~; and Figur~ 4 is a cross-sectional view correRpondlng to Fig. 1 ~P a slightly modified embodiment of a davica ~r utilizing the msthod acoording 2û to the prssent invention.
With referencs to Flgura 1, re~erence numeral 1 indlcat~s a ~urrounding tubular member~ rotatably connacted to an attachmant member 2 havdng an sxternal screw thread. Said attachm~nt i8 in tha shown embodlment accomplishad by msan3 of an intarnal groove arrangao in the lower part of the t~bular member 1, which, by mean~ of a spring ring 3, is attached to a corresponding external groove in the upper portion o~
ths attachment member 2. The method to join the tubular member 1 and the attachment ~zmber 2 can obviously be variad in a large numb~r of previou~ly known ways, e~g. by arranging tha attachmant memb~r 2 with an sxternal surroanding flange anà the tubular member 1 with a groove by the internal ~ree edge portion, whereafter the tubular memb~r 1 i~ attaohed rotatably with th~ surrounding flangs of the attachment mamb~r 2, e~g.
by means Df ds~ormation. Further variation3 in ths method to accomplish ~aid ~ 3 --attach~ent are previously w811 known and th~re~ore n~ discuss~d.
The tubular mambar embraces a locking mechanigm 4, erranged with a number of locking mamb~rs 5, 5', 5~'9 which are arranged to int~rlock with co-operating interlncking means, such as grooves or similar, arr~nged both at the inside peripheral p~rt o~ the tubular member 1 and th~ surfaca facing the locking mechanism 4 of the attachment memb3r 2.
In Figures 1 and 2 are the davice shown with the locking memb~rs 5, 5', 5" arranged in a position extending away from the locking meohanism 4, i.e~ in interlocking contact with both the tubular mambsr 1 and the lû attaohment member 2~ S~id members 1 and 2 are thus joinsd to sach other in a non-rot~table or movable r01ationship, which makss it po~sible to transfer a rotating movement ~rom the tubular mHmbsr 1 to the ~tt~ohment membar 2. The tubular member i8 in tho ~hown smbodiment arrang~d with an external hHxagonal shape, which maks3 it possibls to attaoh a conventional spanner o~ spark plug type.
Said embodiment is attached to the cylinder he~d of a cumbustion sngine in the ~ollowlng manner. First i9 a spark plug, attached to tha cylindHr head, removsd, whereafter the devioa, with ths locking mechanism 4 in such 8 state that tha locking members 5, 5', 5" are arrangad in a position corresponding to F~guras 1 and 2~ i~ screwad into the oylinder head in a way corrssponding to a spark plug. When th2 davice ha~ been attached in a describ~d mann0r, the locking m0chanism 4 is inPluenced by means of a key 6 (only partly shown) in such a way, that the locking membars 5, S~, S~' are retracted to a position embraced by the locking mechanism 43 as shown in Fig. 3. The tubular mEmb0r 1 is thus "rsle~d" ~rom the attaohment member 2~ a~ well as thH locking mechanism 4 ~rom both the tubular member 1 and the attachm0nt member 2. The davice can hareby not be remoued from the cylinder head 9 since both the tubular membar 1 and the locking merhanism 4 fre~ly can be rotated in relation to thH attachment mamber 2~ The 0ngin0 cannot-now be usad, 9ino9 there is no pos~ible way to sttaoh a spark plug.
In Figure~ 1 and 3, the portion of th~ attaohment mHmb~r 2 directed towards the piston in the engine is shown ~ point~d member 75 in order to accomplish daformation o~ th~ pi~ton in the engln~ in connection with unauthori~ed attempt to start th~ snginQ with the device attachsd. Said de~ormation pr~vsnts th~ piston from running and functioning as d~sired in ths cylinder, but also obvi~usly a damag~ that will require rapair and thus rspair costs.
An altarnative smbod~m~nt is shown in Fig. 47 according to which the pointe~ portion 7 is arranged with a thr~aded part 9 arranged to facilitato attachm~nt to a hole with a corresponding int~rnal scr0w thrsad arrangad in the attachment membsr 2. Hareby it is possibla to chDos~ whsthsr or not this ~xtra th~ft-pr~ventive m~anq should ba used sr not~ which can bs regardsd as necassary in certain cases, e.g. if ths device is used to raplace one spark plug only in a multi-cylind~r en9ine, such a~ 4- 9 6~ or 8-cylinder engines~ in which cage~ th2 englnQ can ~unction with low e~iciency even if one spark plug i9 mis~ing. Tha point~d part can b~ dismissed for multi-cylinder sngines9 provid~d that two or more dsvices according to th~
present invsntion ars att~ch~d.
The shown and d~so~bed ~mbodiment, with modi~ication ac¢ording to Fig. 4, i9 only int~ndad to serve as an exampl~ o~ an ~mbodiment within th~ scope oF ths pressnt invention, which mothod basically compris~s of ths use o~ a lockable d~vice att~chsd in po ition o~ a removed spark plug or a numbsr of spark plugs in a combustion ~ngins, which permit altsrnativaly a locksd, and a rotabls ioint with an attachmsnt m~mb~r having an extsrnal screw thread corresponding to the extsrnal thr~ad o~ the removed spark plug.
Ths t~bular m~mb~r i8 also pr~rably arrang~d with an extsrnal shap~ corre~
ponding to ths portion of tho spark plug ussd ~or interlock1ng purpos3s with a tubular spanner o~ spark plug typs9 whsreby attachmsnt, ~nd removal, can b~ carrisd out using conventional toal31 providsd that ths lwking mechanism has bs~n brought to unrotatably Join the attachmQrlt memb~r and the tubular member~
Ths locking msmber~ 5~ 5', 5~, forming a park o~ the locking machaniqm 47 aro prsferably arranged springloaded in such a way that a locking movament by means of tha correspondingrnkay ~ causas ths locking mambers 5, 5', 5" to take up contact with tha insid~ peripheral sur~acs of tha tubular m~rnber 1 and tho uppar plana of tha attachment m~mber 2 respectively, so that tha \
locking mambers interlock with resp0ctiv~ part9 l and 2, a~ ~oon as tha tubular member has bean rotatad to surh a position, that the locking m~mb~r~
S, 5~, 5" can intarlDck with the co-acting intarlocking maans arrangad in tha member~ l and 2 respectively.
Tha tubular member l is al90 pre~erably manu~artursd ~rom.a material with high resistanca against appliad outsida ~orca, a.g~ hardenad stesl or carbide ~tael. Haraby ara all attempts to bring th~ davice out of order by m0ans o~ fDrcas applisd to the tubular member l effectively prevanted.
It should also ba emphasized that the shown embodim0nt can be modifiad in a larga numbar of ways,without depsrting ~rom tha important and charactaristio Faatures of tha method according to tha prasant invention.
Thu.Q, it is possible in certain cases to arranga tha locking mechanism 4 attach0d to either thQ tubular memb~r l or tha attachment membar 29 having lock7ng mambars 59 51, 511, which can ~ake up an interlock2d relationship with the remaining mambar.
Also, many othar embodiments ara possibl~ within tha scope o~ the invantiva thought and the ~ollowing claims.
Claims (12)
OR PRIVILEGE IS CLAIMED, ARE DEFINED AS FOLLOWS:
1. A method to prevent unauthorized use of combustion engine-driven vehicles, ships, equipment, as well as engines only, characteristic thereof, at least one spark plug arranged at an angine is removed and replaced by a first member having an outside portion with an external screw thread corresponding to the attachment screw thread of the spark plug, said first member being joined by means of A locking mechanism to a second member surrounding the first member and the lock-ing mechanism, and having means for interlocking purposes with a tool intended to facilitate attachment of the first member to the cylinder head of the engine, said locking machanism being arranged to release the second member from the first member, when in locked position, thus facilitating free rotation of the second member in relation to the first member attached to the cylinder head of the engine.
2. A method according to claim 1, characteriristic thereof, that both the locking mechanism and the second member are freely rotatable in relation to each other, as well as the first member, when the locking mechanism is in locked position.
3. A method according to any of claims 1 and 2 , characteristic thereof, that the threaded member joined to a member protruding into the cylinder in direction towards a piston in said cylinder of the engine, arranged to deform said piston during piston movement in direction towards said protruding member.
4. A device to prevent unauthorized use of a combustion engine, comprising an attachment member having an external screw thread corres-ponding to the attachment screw thread of a spark plug, a tubular member rotatably Joined to said attachment members and having means for attachment of an associated tool to rotate said tubular member, and a locking mechanism embraced by said tubular member, said mechanism being arranged to either join the tubular member and the attachment member into a non-rotatable or rotatable relationship to each other, when said mechanism is manipulated with a relevant key.
5. A device according to claim 4, wherein said locking machanism is rotatably mounted within said tubular member and has locking members, arranged to co-operate with interlocking means carried by the tubular member and the attachment member.
6. A device according to claim 5, wherein the tubular member totally embraces the locking machanism and the portion of the attachment member which is directed away from the attachment screw thread of said attachment member.
7. A device according to claim 6, wherein the tubular member is rotatably connected to the attachment member by means of a spring ring.
8. A device according to claim 6, wherein the tubular member is rotatably connected to the attachment member by means of permanent deformation.
9. A device according to any of claim 4, 5 or 7, wherein the tubular member is manufactured from a material with high resistance against applied outside forces.
10. A device according to claim 5, wherein the locking members are arranged to take up a spring-loaded position in contact with adjacent surfaces of said tubular member of said attachment member.
11. A device according to claim 4, 5 or 7, wherein said attachment member is arranged with a pointed part directed away from the tubular member, to deform a piston in an engine to which the device is attached, when the piston is moved in a direction towards said part.
12. A device according to claim 11,wherein said part is detachably connected to the attachment member, in order to facilitate removal of said part when a deformation of the piston is not desired.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7606432-8 | 1976-06-08 | ||
| SE7606432A SE404159B (en) | 1976-06-08 | 1976-06-08 | WAY TO PREVENT UNAUTHORIZED USE OF COMBUSTION ENGINE POWERED VEHICLES, VESSELS, EQUIPMENT LIKE ENGINES, AND ANY DEVICE FOR EXERCISE OF THE KIT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1096255A true CA1096255A (en) | 1981-02-24 |
Family
ID=20328157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA280,050A Expired CA1096255A (en) | 1976-06-08 | 1977-06-07 | Method to prevent unauthorized use of combustion engine driven vehicles, ships, other equipment including combustion engines only and a device according to the method |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5317804A (en) |
| AT (1) | AT358333B (en) |
| AU (1) | AU508331B2 (en) |
| BE (1) | BE855455A (en) |
| CA (1) | CA1096255A (en) |
| DE (1) | DE2725808A1 (en) |
| DK (1) | DK253077A (en) |
| ES (1) | ES459590A1 (en) |
| FR (1) | FR2354455A1 (en) |
| GB (1) | GB1577812A (en) |
| IE (1) | IE44968B1 (en) |
| IT (1) | IT1082101B (en) |
| NL (1) | NL7706277A (en) |
| SE (1) | SE404159B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8804160U1 (en) * | 1988-03-26 | 1988-07-28 | Friedrich Marx Gmbh & Co, 2000 Hamburg, De | |
| JP2524849B2 (en) * | 1990-02-24 | 1996-08-14 | 追浜工業 株式会社 | Work equipment safety equipment |
| SE501659C2 (en) * | 1993-10-01 | 1995-04-10 | Sten Aastroem | Device for preventing unauthorized use of a motor |
| AU6371596A (en) * | 1995-07-06 | 1997-02-05 | Thomas Arthur Hamblyn | Theft deterrent device |
| AUPO729997A0 (en) * | 1997-06-11 | 1997-07-03 | Cleland, Glen Irving | Engine disabling apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE515827C (en) * | 1931-08-03 | Georg Krause | Security device against theft of motor vehicles | |
| US1511001A (en) * | 1922-02-06 | 1924-10-07 | Padden James | Spark-plug locking device |
| FR656880A (en) * | 1928-07-02 | 1929-05-14 | Security device against theft of motor vehicles |
-
1976
- 1976-06-08 SE SE7606432A patent/SE404159B/en unknown
-
1977
- 1977-06-07 CA CA280,050A patent/CA1096255A/en not_active Expired
- 1977-06-07 IT IT24432/77A patent/IT1082101B/en active
- 1977-06-07 AT AT403377A patent/AT358333B/en not_active IP Right Cessation
- 1977-06-07 BE BE178251A patent/BE855455A/en unknown
- 1977-06-08 IE IE1172/77A patent/IE44968B1/en unknown
- 1977-06-08 JP JP6681977A patent/JPS5317804A/en active Pending
- 1977-06-08 FR FR7717505A patent/FR2354455A1/en not_active Withdrawn
- 1977-06-08 DK DK253077A patent/DK253077A/en not_active Application Discontinuation
- 1977-06-08 AU AU25949/77A patent/AU508331B2/en not_active Expired
- 1977-06-08 ES ES459590A patent/ES459590A1/en not_active Expired
- 1977-06-08 NL NL7706277A patent/NL7706277A/en not_active Application Discontinuation
- 1977-06-08 DE DE19772725808 patent/DE2725808A1/en not_active Withdrawn
- 1977-06-08 GB GB23945/77A patent/GB1577812A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE855455A (en) | 1977-10-03 |
| IE44968B1 (en) | 1982-05-19 |
| DE2725808A1 (en) | 1977-12-22 |
| IT1082101B (en) | 1985-05-21 |
| NL7706277A (en) | 1977-12-12 |
| FR2354455A1 (en) | 1978-01-06 |
| ES459590A1 (en) | 1978-11-16 |
| SE7606432L (en) | 1977-12-09 |
| IE44968L (en) | 1977-12-08 |
| AT358333B (en) | 1980-09-10 |
| SE404159B (en) | 1978-09-25 |
| GB1577812A (en) | 1980-10-29 |
| ATA403377A (en) | 1980-01-15 |
| AU2594977A (en) | 1978-12-14 |
| AU508331B2 (en) | 1980-03-20 |
| JPS5317804A (en) | 1978-02-18 |
| DK253077A (en) | 1977-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |