WO1999047772A1 - Device and key for defrosting of locks - Google Patents

Device and key for defrosting of locks Download PDF

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Publication number
WO1999047772A1
WO1999047772A1 PCT/YU1998/000021 YU9800021W WO9947772A1 WO 1999047772 A1 WO1999047772 A1 WO 1999047772A1 YU 9800021 W YU9800021 W YU 9800021W WO 9947772 A1 WO9947772 A1 WO 9947772A1
Authority
WO
WIPO (PCT)
Prior art keywords
lock
key
key according
locks
heat
Prior art date
Application number
PCT/YU1998/000021
Other languages
French (fr)
Inventor
Vujo MILJEVICĆ
Original Assignee
Miljevicc Vujo
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 Miljevicc Vujo filed Critical Miljevicc Vujo
Priority to AU12095/99A priority Critical patent/AU1209599A/en
Publication of WO1999047772A1 publication Critical patent/WO1999047772A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0016—Defrosting, e.g. heating devices

Definitions

  • the present invention belongs to the field of mechanical engineering, particularly to automotive engineering, and relates to device and methods for defrosting locks on motor vehicles and other locks and padlocks on objects exposed to various atmospheric conditions and freezing tempera ⁇ tures .
  • the present invention solves this problem enabling one to open a lock exposed to freezing temperatures practically in the same way as on higher, non- freezing temperatures.
  • glycerin is used most frequently, which is introduced in the lock before freezing conditions. If a lock is already frozen glycerin does not help in defrosting. Although effective, glycerin has its own deficiencies, for after its application lock collects dust, unlocking of the lock is more difficult, and often the mechanism of the lock is blocked. To prevent that, it is necessary to clean a lock after winter period, for example to rinse it with alcohol.
  • Other products available presently on the market under various commercial names are mostly based on glycerin. Besides glycerin, silicon spray or graphite powder are also used, which also are to be introduced in a lock before occurrence of freezing temperatures. However, manufacturers do not recommend lubrication of locks with any product.
  • lock can be defrosted by pouring warm water over it, what is often done by vehicle operators, although this is also not recommended. None of these methods is comfortable and does not enable driver or other user to unlock easily locks under winter conditions in the same way as on non-freezing temperatures .
  • the essence of invention is to transfer heat to mechanism (cylinder) of a lock, either by means of electric heater powered from storage battery, or by means of a modified key with special heating body for which an ordinary cigarette lighter, or match, or other source of heat is used.
  • Electric heater is on the lock cylinder and is turned on automatically by a thermostat when temperature of the lock is freezing, as well as it is turned off when lock is on above freezing temperature.
  • remote control is used to turn on a device for defrosting of a lock immediately before use of the vehicle.
  • Defrosting of locks without installed defrosting device is done by means of modified key with heating body through which a heat is transferred to a lock cylinder from outside source of heat (cigarette lighter, match, and similar) .
  • Presented device for defrosting of locks is very effective and can be used under very bad weather conditions.
  • FIG. 1 is cross-sectional view of a lock cylinder with electric heater and thermostat.
  • FIG. 2 is an electric schematic diagram of the device for defrosting of locks, containing heater, thermostat, switch, signal light-emitting diode (LED) , and storage battery.
  • LED light-emitting diode
  • FIG. 3 is an electric schematic diagram of the device with time delay relay (timer) to be switched on by remote control of the alarm system installed in vehicle .
  • FIG. 4 i.s an electric schematic of the device with a circuit to regulate heater current depending of the lock cylinder temperature.
  • FIG. 5 is cross-sectional and side sectional view of modified lock key with heating body for transfer of heat to lock cylinder from outside sources of heat instead of using electric heater.
  • FIG. 6 Cross section and side sectional view of an additional heating body to be put on the modified key to increase a heat capacity of heating body.
  • the essence of the invention is to transfer heat to a lock, either from an electric heater powered from a storage battery via relevant electric circuit, or from a key with additional heating body to which heat is transferred from outside.
  • FIG. 1 Cross-sectional view of a motor vehicle lock is shown in FIG. 1.
  • Electric heater 2 and thermostat 3 including its sensor are installed on the lock cylinder.
  • FIG. 2 A schematic diagram of an electric circuit of the device for defrosting of a lock is shown in FIG. 2. It includes electric heater 2, thermostat 3, switch 4, and light- emitting diode 5. The electric circuit is powered by a storage battery 6. When temperature of a lock is at freezing temperature the thermostat 3 is in operating position - its contacts are on - and if the switch 4 is on, electric current is running through the heater 2 and the lock cylinder warms up. When the lock cylinder reaches above freezing temperature, thermostat breaks the electric circuit and the lock cools down until it again reaches freezing temperature, when thermostat switches on electric heater and the cycle repeats. In such a way temperature of the lock is kept at above freezing temperature and freezing of the lock is avoided. The signal light-emitting diode (LED) 5 is on whenever the heater is switched on.
  • LED light-emitting diode
  • FIG. 3 A schematic diagram of an electric circuit of the device for defrosting of a lock, to be switched on by remote control of an alarm system installed in vehicle, is shown in FIG. 3. It includes electric heater 2, thermostat 3, LED 5, time delay relay (timer) 7, and alarm system 8, all powered by storage battery 6.
  • the timer is activated by constant or pulse voltage from the alarm system.
  • timer 7 When the timer 7 is activated, electric current runs through the heater in a definite time interval set previously. The time interval is set on timer so that for a given wattage rate of the heater, lock is just defrosted.
  • Vehicle alarm system which is activated by remote control, turns on or off electric circuit of engine, vehicle lights, and . horn.
  • Timer can be connected, for example, to a relay which switches vehicle lights on and off, so that by deactivating of alarm system from outside (by remote control) the voltage pulse, which turns on/off vehicle lights, turns the timer on, and electric current runs through electric circuit and heater, and warms up the lock cylinder before unlocking the vehicle.
  • the timer can be activated by a push button switch 8.1, presented in FIG. 3 by dash line, instead of by remote control of alarm system.
  • the push button should be placed in a hidden but accessible exterior place of a vehicle.
  • Electric circuit of the device comprising timer 7 with added regulator 9 of heater current, which regulates current as a function of a temperature, is shown schematically in FIG. 4.
  • the current regulator 9 is connected to thermostat sensor 3. Circuit is adjusted so that for very low temperatures (for a given climate) it allows maximal current which decreases with increase of ambient temperature. Thus, time required to defrost a lock does not depend of external temperature .
  • FIG. 5 Cross sectional and side sectional view of modified lock key for defrosting locks is shown in FIG. 5. It comprise of its part 10 to be inserted into lock cylinder, heating body 11, and key handle 12. Heat is transferred to heating body from outside using as a heat source, for example, cigarette lighter, miniature gas torch, match. Heating body ensures heat transfer via key part 10 into lock cylinder 1 to defrost it. Also, heating body ensures good heat contact with external part of a lock and lock cover for warming up of external pars of a lock. The heating body is of such a form to protect hands from external heat source during unlocking of a lock. Modified key with elliptic heating body suitable for carrying in a pocket is shown in FIG. 5b.
  • FIG. 6 Cross sectional and side sectional views of additional heating body to be put on the part 10 in order to increase heat capacity of modified key are presented in FIG. 6.
  • Key with additional heating body is placed on a lock cover to transfer heat to the external parts of the lock mechanism.
  • the additional heating body is removed from the key after heating of external parts of the lock and modified key is used to unlock the lock.
  • modified but blank keys with its part 10 not formed for any specific lock cylinder.
  • the owner of a motor vehicle can then get made a key for his vehicle by duplicating existing key at locksmith's shop.
  • Modified key can be also manufactured as a spare key together with a corresponding lock for installation in a vehicle .
  • a similar device with electric heater, with or without turning it on or off by means of remote control alarm system, or modified key with heating body, can be used for locks on various objects exposed to various weather conditions and low temperatures.
  • the invention is perhaps of greatest significance for use on motor vehicle, accounting their large number. Still, the largest number of vehicles is parked on streets and open parkings, as the number of vehicles is larger than the number of garages .
  • heater of lock cylinder, thermostat, and electric circuit can be different than that of described design, as well as modified key can be of different shape than one described here.
  • the fundamental principle of the invention remain the same, and that is a transfer of heat to a lock mechanism from electric heater or from heating body of a key, what is all covered by the present patent application.

Landscapes

  • Lock And Its Accessories (AREA)

Abstract

The present invention belongs to the field of mechanical engineering, particularly to automotive engineering, and relates to devices and methods for defrosting locks on vehicles and other locks and padlocks on objects exposed to various atmospheric conditions and freezing temperatures. The essence of the invention is to transfer heat to a vehicle lock mechanism (1), either from electric heater (2) powered from storage battery (6), or from modified key (10) with special heating body (11) to which heat is transferred from outside sources of heat. The built in electric heater is turned on either automatically (by a thermostat (3)), or by a remote control of a vehicle alarm system (8), or directly by a push button switch (8.1). Regulator (9) of heater current contributes to optimal consumption of electric energy from storage battery (6). For defrosting of a lock by means of a modified key, heat is transferred to heating body (11) from, for example, cigarette lighter or similar source of heat. The device can be utilized for defrosting locks on other objects not only on motor vehicles.

Description

DEVICE AND KEY FOR DEFROSTING OF LOCKS
FIELD OF INVENTION
The present invention belongs to the field of mechanical engineering, particularly to automotive engineering, and relates to device and methods for defrosting locks on motor vehicles and other locks and padlocks on objects exposed to various atmospheric conditions and freezing tempera¬ tures .
THE PROBLEM
The problem to unlock frozen locks on various objects, particularly vehicles, appear under winter conditions on freezing temperatures. The present invention solves this problem enabling one to open a lock exposed to freezing temperatures practically in the same way as on higher, non- freezing temperatures.
THE PRESENT STATUS
Presently, to prevent freezing of vehicle locks glycerin is used most frequently, which is introduced in the lock before freezing conditions. If a lock is already frozen glycerin does not help in defrosting. Although effective, glycerin has its own deficiencies, for after its application lock collects dust, unlocking of the lock is more difficult, and often the mechanism of the lock is blocked. To prevent that, it is necessary to clean a lock after winter period, for example to rinse it with alcohol. Other products available presently on the market under various commercial names are mostly based on glycerin. Besides glycerin, silicon spray or graphite powder are also used, which also are to be introduced in a lock before occurrence of freezing temperatures. However, manufacturers do not recommend lubrication of locks with any product. Certainly, lock can be defrosted by pouring warm water over it, what is often done by vehicle operators, although this is also not recommended. None of these methods is comfortable and does not enable driver or other user to unlock easily locks under winter conditions in the same way as on non-freezing temperatures .
THE ESSENCE OF INVENTION
The essence of invention is to transfer heat to mechanism (cylinder) of a lock, either by means of electric heater powered from storage battery, or by means of a modified key with special heating body for which an ordinary cigarette lighter, or match, or other source of heat is used.
Electric heater is on the lock cylinder and is turned on automatically by a thermostat when temperature of the lock is freezing, as well as it is turned off when lock is on above freezing temperature. In a vehicle with installed alarm system, remote control is used to turn on a device for defrosting of a lock immediately before use of the vehicle.
Defrosting of locks without installed defrosting device is done by means of modified key with heating body through which a heat is transferred to a lock cylinder from outside source of heat (cigarette lighter, match, and similar) .
Presented device for defrosting of locks is very effective and can be used under very bad weather conditions.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is cross-sectional view of a lock cylinder with electric heater and thermostat.
FIG. 2 is an electric schematic diagram of the device for defrosting of locks, containing heater, thermostat, switch, signal light-emitting diode (LED) , and storage battery.
FIG. 3 is an electric schematic diagram of the device with time delay relay (timer) to be switched on by remote control of the alarm system installed in vehicle .
FIG. 4 i.s an electric schematic of the device with a circuit to regulate heater current depending of the lock cylinder temperature.
FIG. 5 is cross-sectional and side sectional view of modified lock key with heating body for transfer of heat to lock cylinder from outside sources of heat instead of using electric heater.
FIG. 6 Cross section and side sectional view of an additional heating body to be put on the modified key to increase a heat capacity of heating body.
DETAILED DESCRIPTION OF INVENTION
To ensure a use of a lock and its proper functioning under winter conditions it is necessary to prevent freezing of the lock, or if the lock is already frozen to ensure its defrosting. The essence of the invention is to transfer heat to a lock, either from an electric heater powered from a storage battery via relevant electric circuit, or from a key with additional heating body to which heat is transferred from outside.
Cross-sectional view of a motor vehicle lock is shown in FIG. 1. Electric heater 2 and thermostat 3 including its sensor (thermocouple, thermistor, silicon diode, or similar) are installed on the lock cylinder.
A schematic diagram of an electric circuit of the device for defrosting of a lock is shown in FIG. 2. It includes electric heater 2, thermostat 3, switch 4, and light- emitting diode 5. The electric circuit is powered by a storage battery 6. When temperature of a lock is at freezing temperature the thermostat 3 is in operating position - its contacts are on - and if the switch 4 is on, electric current is running through the heater 2 and the lock cylinder warms up. When the lock cylinder reaches above freezing temperature, thermostat breaks the electric circuit and the lock cools down until it again reaches freezing temperature, when thermostat switches on electric heater and the cycle repeats. In such a way temperature of the lock is kept at above freezing temperature and freezing of the lock is avoided. The signal light-emitting diode (LED) 5 is on whenever the heater is switched on.
A schematic diagram of an electric circuit of the device for defrosting of a lock, to be switched on by remote control of an alarm system installed in vehicle, is shown in FIG. 3. It includes electric heater 2, thermostat 3, LED 5, time delay relay (timer) 7, and alarm system 8, all powered by storage battery 6. The timer is activated by constant or pulse voltage from the alarm system. When the timer 7 is activated, electric current runs through the heater in a definite time interval set previously. The time interval is set on timer so that for a given wattage rate of the heater, lock is just defrosted.
Vehicle alarm system, which is activated by remote control, turns on or off electric circuit of engine, vehicle lights, and. horn. Timer can be connected, for example, to a relay which switches vehicle lights on and off, so that by deactivating of alarm system from outside (by remote control) the voltage pulse, which turns on/off vehicle lights, turns the timer on, and electric current runs through electric circuit and heater, and warms up the lock cylinder before unlocking the vehicle. In a case of extreme low temperatures the whole procedure should be repeated by additional activation of remote control until lock is defrosted, or to increase previously set on time interval on the timer in the case of prolonged very cold weather. The timer can be activated by a push button switch 8.1, presented in FIG. 3 by dash line, instead of by remote control of alarm system. For this purpose the push button should be placed in a hidden but accessible exterior place of a vehicle.
Electric circuit of the device comprising timer 7 with added regulator 9 of heater current, which regulates current as a function of a temperature, is shown schematically in FIG. 4. The current regulator 9 is connected to thermostat sensor 3. Circuit is adjusted so that for very low temperatures (for a given climate) it allows maximal current which decreases with increase of ambient temperature. Thus, time required to defrost a lock does not depend of external temperature .
Present, contemporary vehicles have usually high capacity storage batteries and a consumption of electric energy does not cause any problem. Especially when timer with heater current regulator is utilized so that heater is always in a regime of minimal but necessary consumption of electric energy.
To defrost locks one can use, besides above described device, also a lock key with heating body to which heat is transferred from outside. Heat is then transferred from heating body to a lock cylinder via part of the key to be inserted into the lock
Cross sectional and side sectional view of modified lock key for defrosting locks is shown in FIG. 5. It comprise of its part 10 to be inserted into lock cylinder, heating body 11, and key handle 12. Heat is transferred to heating body from outside using as a heat source, for example, cigarette lighter, miniature gas torch, match. Heating body ensures heat transfer via key part 10 into lock cylinder 1 to defrost it. Also, heating body ensures good heat contact with external part of a lock and lock cover for warming up of external pars of a lock. The heating body is of such a form to protect hands from external heat source during unlocking of a lock. Modified key with elliptic heating body suitable for carrying in a pocket is shown in FIG. 5b. Cross sectional and side sectional views of additional heating body to be put on the part 10 in order to increase heat capacity of modified key are presented in FIG. 6. Key with additional heating body is placed on a lock cover to transfer heat to the external parts of the lock mechanism. The additional heating body is removed from the key after heating of external parts of the lock and modified key is used to unlock the lock.
It is to be noted that special cigarette gas lighters with mesh on flame which can be used in presence of a strong wind, are available on a market, so that it is possible to use modified key with heating body even under windy conditions .
It is possible to manufacture modified but blank keys with its part 10 not formed for any specific lock cylinder. The owner of a motor vehicle can then get made a key for his vehicle by duplicating existing key at locksmith's shop. Modified key can be also manufactured as a spare key together with a corresponding lock for installation in a vehicle .
A similar device with electric heater, with or without turning it on or off by means of remote control alarm system, or modified key with heating body, can be used for locks on various objects exposed to various weather conditions and low temperatures. However, the invention is perhaps of greatest significance for use on motor vehicle, accounting their large number. Still, the largest number of vehicles is parked on streets and open parkings, as the number of vehicles is larger than the number of garages .
Certainly, various solutions and modifications are possible for the device. For example, heater of lock cylinder, thermostat, and electric circuit can be different than that of described design, as well as modified key can be of different shape than one described here. However, the fundamental principle of the invention remain the same, and that is a transfer of heat to a lock mechanism from electric heater or from heating body of a key, what is all covered by the present patent application.

Claims

1. A device and key for defrosting locks on motor vehicles and other locks and padlocks on objects exposed to various atmospheric conditions and freezing temperatures, when glycerin, silicon spray, or graphite powder are used for defrosting, comprises of transfer of heat to a lock cylinder to defrost it and ensure its unlocking.
2. A device and key according to claim 1, comprising a lock cylinder (1) with an electric heater (2) and thermostat (3) .
3. A device and key according to claim 2, comprising said electric heater (2) connected via thermostat (3) and a switch (4) to a storage battery (6) .
4. A device and key according to claim 2, comprising said electric heater (2) connected via said thermostat (3) and time delay relay - timer (7) to a storage battery (6) .
5. A device and key according to claim 4, comprising a vehicle alarm system (8) with remote control to turn on said timer (7) .
6. A device and key according to claim 4, comprising a push button switch (8.1) to turn on said timer (7) .
7. A device and key according to claim 2, comprising said electric heater (2) , connected through said thermostat (3) , said time delay relay - timer (7) , and a regulator (9) of heater current regulating it according of lock temperature, to a storage battery (6) .
8. A device and key according to claim 3, comprising switch (4) to disconnect the electric circuit of the device.
9. A device and key according to claims 3, 4, and 7, comprising a light-emitting diode (LED) (5) connected parallel to the heater (2) .
10. A device and key according to claims l, 2, and 3, comprising said heater (2) powered from power line instead of a storage battery (6) .
11. A device and key according to claim 1, comprising a modified lock key with its part to be inserted in a lock cylinder (10) , a heating body (11) , and its handle (12) .
12. A device and key according to claim 11, comprising additional heating body (13) of a key.
PCT/YU1998/000021 1998-03-16 1998-11-19 Device and key for defrosting of locks WO1999047772A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU12095/99A AU1209599A (en) 1998-03-16 1998-11-19 Device and key for defrosting of locks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
YUP-114/98 1998-03-16
YU11498A YU11498A (en) 1998-03-16 1998-03-16 Device and key for lock defrosting

Publications (1)

Publication Number Publication Date
WO1999047772A1 true WO1999047772A1 (en) 1999-09-23

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ID=25548400

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/YU1998/000021 WO1999047772A1 (en) 1998-03-16 1998-11-19 Device and key for defrosting of locks

Country Status (3)

Country Link
AU (1) AU1209599A (en)
WO (1) WO1999047772A1 (en)
YU (1) YU11498A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7490497B2 (en) * 2006-09-29 2009-02-17 Allen Adcock Lock heating assembly for use in a padlock device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022408A (en) * 1960-10-25 1962-02-20 Robert W Wagner Electrically heated key
US4304548A (en) * 1979-12-04 1981-12-08 Ruhaut Robert C Sesame frozen lock opener
DE3617450A1 (en) * 1986-05-23 1987-11-26 Huelsbeck & Fuerst Method for heating a lock cylinder, especially on cylinder locks of vehicles
DE3809330A1 (en) * 1988-03-19 1989-10-05 Augustin Hans Ulrich Heatable lock
US5573685A (en) * 1996-02-05 1996-11-12 Boncaldo; Paul J. Remote control antifreeze device for a vehicle locking unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022408A (en) * 1960-10-25 1962-02-20 Robert W Wagner Electrically heated key
US4304548A (en) * 1979-12-04 1981-12-08 Ruhaut Robert C Sesame frozen lock opener
DE3617450A1 (en) * 1986-05-23 1987-11-26 Huelsbeck & Fuerst Method for heating a lock cylinder, especially on cylinder locks of vehicles
DE3809330A1 (en) * 1988-03-19 1989-10-05 Augustin Hans Ulrich Heatable lock
US5573685A (en) * 1996-02-05 1996-11-12 Boncaldo; Paul J. Remote control antifreeze device for a vehicle locking unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7490497B2 (en) * 2006-09-29 2009-02-17 Allen Adcock Lock heating assembly for use in a padlock device

Also Published As

Publication number Publication date
AU1209599A (en) 1999-10-11
YU11498A (en) 1999-11-22

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