US3484177A - Igniter and control means - Google Patents
Igniter and control means Download PDFInfo
- Publication number
- US3484177A US3484177A US410321A US3484177DA US3484177A US 3484177 A US3484177 A US 3484177A US 410321 A US410321 A US 410321A US 3484177D A US3484177D A US 3484177DA US 3484177 A US3484177 A US 3484177A
- Authority
- US
- United States
- Prior art keywords
- scr
- gas
- resistor
- solenoid
- ignition
- 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
Links
- 239000000446 fuel Substances 0.000 description 21
- 238000004804 winding Methods 0.000 description 12
- 238000010304 firing Methods 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
- F23Q3/004—Using semiconductor elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
Definitions
- An electrical ignition system for a fluid burner having a solid state controlled conduction device which, when conducting, provides (1) a current path to energize a spark discharge device for ignition of the burner and (2) a current path to open a solenoid controlled, norma ly closed fuel line valve.
- An alternate current path provides sufficient current from the power source to hold the valve open.
- the system includes a flame sensing, temperature responsive resistance element which, when heated by the fuel flame, is effective to shut off the controlled conduction device, thereby Causing the spark discharge device to shut off. If the flame fails to activate the emperature responsive resistance within a predetermined time, a current responsive element is effective to open a normally closed switch to open the power circuit to shut off ignition and close the fuel line valve.
- This invention relates to an ignition system for gas burning apparatuses and more specifically to an electrical ignition system using solid state components and which is adaptable for use in igniting the gas flame in gas dryers, oil furnaces, space heaters, and the like.
- the system of this invention includes not only an ignition means but also several safety devices which will prevent damage to the fluid burning apparatus due to malfunction of the electrical or gas components thereof.
- An ignition system for gas-fired apparatuses such as clothes dryers or the like must be physically compact and insensitive to variations in humidity and temperature of the environment in which it is placed. Systems using solid state components have been found to be superior for these reasons and also because of the fact that such systems are subject to vibration and mechanical shock, particularly when used in a home clothes dryer installation. It is also important that any such ignition system include certain safety devices which will automatically shut off the flow of gas to the apparatus when the power supply temporarily fails and is resumed or when the flame, for one reason or another, is extinguished or fails to initially ignite.
- FIGURE 1 is a schematic circuit diagram of a preferred embodiment of this invention showing only the electrical components thereof;
- FIGURE 2 is a schematic circuit diagram of the second preferred embodiment of this invention with slight modifications in the ignition firing control circuit
- FIGURE 3 is a schematic circuit diagram of another preferred embodiment of this invention.
- FIGURE 4 is a schematic circuit diagram of yet another preferred embodiment of this invention.
- the control circuit is shown with line terminals 10 and 11 which are connected to a source of outside power, normally 117 volt AC housepower. It is to be understood that the gas igniter systems of this invention can be designed to operate on line voltage of different value but are illustrated herein as using 117 volt AC.
- Solenoids 17 and 18 control normally closed gas valves in the burner apparatus located in series in the gas supply line and which, when the solenoids 17 and 18 are not energized, are biased to a closed position to prevent the flow of gas.
- Solenoid 18, as shown, is connected directly across lines 13 and 14 and, when manual switch 12 is closed, will pull in to open its associated gas valve.
- Solenoid 17 is connected across lines 13 and 14 through a resistor 19.
- Resistor 19 is selected such that its resistance is great enough to prevent sufflcient current flow through the solenoid 17 and resistor 19 to open its associated gas valve until another current path around resistor 19 is closed to increase the voltage across the solenoid.
- the control circuit for the spark producing apparatus includes a silicon controlled rectifier (SCR) 20 having anode 21 and cathode 22 connected across lines 13 and 14 in series with the primary of a spark coil 23 and a capacitor 24.
- SCR silicon controlled rectifier
- a temperature variable resistor or thermistor 25 is connected in series with a resistor 26 across lines 13 and 14 and the control electrode or gate 27 of the SCR 20 is connected through the bimetallic switch heater resistor 16 to the junction between the thermistor 25 and resistor 26 as shown.
- the gate 27 of the SCR 20 is also connected to line 14 through an adjustable resistor or trimmer 28 and a solid state diode or rectifier 29 is connected between the anode 21 of the SCR 20 and the junction between solenoid 17 and resistor 19.
- the thermistor 25, in the circuit shown in FIGURE 1, is a negative temperature coeflicient (NT C) type in which the resistance of the device decreases as its temperature increases.
- NT C negative temperature coeflicient
- Such NTC thermistors are commercially available in a variety of resistance-temperature characteristics and'are compact,'economical and reliable.
- Thermistor 25 is physically located within the gas burning apparatus so that it is heated by the gas flame, schematically shown in FIGURE 1 at F.
- the operation of the ignition control circuit of FIG- URE 1 is as follows: Manual closure of switch 12 puts full line voltage across solenoid 18 and pulls in the relay contacts associated therewith, opening its associated gas valve. As previously explained, solenoid 17 will not pull in at this time because resistor 19 limits the current through solenoid 17. The capacitor 24 charges and remains charged until the firing of the SCR 20. Firing of the SCR 20 is controlled by the voltage at its gate or control electrode 27 which is controlled by the voltage drop across the resistor 26 and the bi-metallic switch heater resistor 16 and the thermistor 25.
- the resistor 19 is of a value large enough to prevent pull in of the solenoid 17 prior to the firing of SCR 20. As soon as SCR 20 assumes its conductive state a second low resistance current path is provided through the diode 29 and the anode-cathode circuit of the SCR 20. Resistor 19 is thus effectively shunted and the current flow through solenoid 17 is sufficient to pull in the solenoid and to open its associated gas valve 50 that gas now flows into the burners of the apparatus.
- a gas flame F heats the thermistor 25 and, as previously explained, reduces its resistance to decrease the voltage at the gate 27 of the SCR 20.
- Impressed voltage at the gate 27 of the SCR 20 is now of insuflicient magnitude so that the SCR 20 no longer fires and the ignition system stops for lack of current in the spark coil 23.
- Solenoid 17 is selected so that the current through resistor 19 alone is suflicient to hold it in pulled-in position after the current path has once been established through the SCR 20, as previously explained, even though this current path opens when the SCR 20 ceases to conduct. In this state, the ignition circuit of this control system remains off and the flame continues to burn with solenoids 17 and 18 remaining pulled-in and their associated gas valves open.
- solenoid 17 will not pull in to open its associated gas valve until the SCR 20 conducts to permit additional current through the solenoid 17. Thus, if there is a malfunction in the ignition system due to opening of the SCR 20, no gas will flow. Secondly, should a flame fail to be ignited for some reason, the thermistor 25 will not be heated and will remain at its normally high resistance value, causing current to flow through bi-metallic switch heater resistor 16 and the adjusting resistor 28.
- the bi-inetallic switch heater resistor 16 is and then resumes its normal value, the pull in of solenoid 17 and opening its associated gas valve will be delayed until the SCR 20 is again in condition to fire and produce an ignition spark. As previously explained, until the thermistor 25 has cooled to a point at which its resistance is large enough to trigger the SCR 20, the SCR 20 will not fire.
- FIGURE 2 illustrates a second preferred embodiment of the ignition system of this invention which is similar to that disclosed in FIGURE 1 and explained above except for the location and type of the thermistor element now designated 25a and the location of bi-metallic switch heater resistor 16. All other components of these control circuits are the same and have similar reference numbers.
- a positive temperature coeflicient (PTC) thermistor 25a is connected in series with the bimetallic switch heater resistor 16 and the adjustable resistor 28 across lines 13 and 14.
- the gate 27 of the SCR 20 is connected between the PTC thermistor 25a and the adjustable resistor 28.
- FIGURE 3 shows another embodiment of the control system of this invention utilizing a SCR 20 and an NTC thermistor 25.
- the winding for the solenoid of one of the gas valves consists of coils 17a and 17b connected as shown in FIGURE 3 and wound on the same core.
- coil 17a is a helper winding for coil 17b
- closure of manual switch 12 will pull in solenoid 18 to open its associated gas valve but the current flow through coil 17b, because of the presence of resistor 19 in series therewith, will not pull in its solenoid.
- the helper winding, or coil 17a is connected across lines 13 and 14 in series with the bi metallic switch heater resistor 16 and the cathode-anode circuit of the SCR 20.
- the resistor 19 may be unnecessary as long as the ampere-turns in the winding 17b do not generate sufi'icient flux to pull in its relay without the help of helper winding 17a.
- failure of the flame to heat the NTC thermistor 25 and thus shut off the SCR 20 will cause current to heat the bi-metallic switch heater resistor 16 which opens switch and causes solenoids 17b and 18 to drop out their relay contacts, closing the gas valves.
- a set of normally open contacts 15a is closed by the switch 15 to shunt the spark coil 23 and prevent further ignition in the secondary.
- a modified circuit similar to that shown in FIGURE 3 and capable of similar operation may include the same basic arrangement of components with the exception of the substitution of a PTC thermistor 25 connected be tween the lower terminal of the bi-metallic switch heater resistor 16 and the gate 27 of the SCR and an adjustable or trimming resistor 28 between the gate 27 of the SCR and line 14. Thus the positions of the thermistor and the adjustable resistor 28 are interchanged.
- This modified circuit, in which the thermistor 25 and adjustable or trimming resistor 28 are connected as shown in FIGURE 2 would operate in a similar manner as described therein.
- the flame F heats the NTC thermistor 25 and reduces its resistance, it will shunt the adjustable resistor 28 to reduce the impressed voltage at the gate 27 of the SCR 20 to a value such as to terminate conduction of the SCR 20 and ignition by the spark coil 23. If the flame F fails to light, the continued flow of current through the SCR 20 to the bi-metallic switch heater resistor 16 will cause this element to open the normally closed switch 15 to shut off the gas at both valves and close normally open contacts 150 to by-pass the spark coil 23.
- a silicon controlled rectifier 20 has been used as the triggering component in the ignition system and is controlled by a thermistor 25 which senses the proper operation of the gas burning apparatus and functions to turn off the ignition system by affecting the gate or control electrode voltage of the SCR. It is to be understood that other components capable of these functions may be used in the above system and that the invention disclosed herein is not limited to use of these particular components. Any appropriate substitute for the thermistor, such as heat responsive bi-rnetallic switches, thermostatically actuated mercury switches, etc., may be used as the flame responsive element herein.
- An ignition and control system in a fuel burning apparatus comprising, in combination,
- (6) a circuit connected across said power source and including (a) an energy storage device,
- said means responsive to the ignition of said fuel elfective to render said controlled device non-conductive comprises a flame-sensitive, variable resistor which, when exposed to the flame from ignited fuel, causes a voltage variation at the control electrode of said controlled device effective to render said controlled device non-conductive.
- An electrically-operated burner system comprising a burner, a fuel line connected thereto, an electricallyoperated means for controlling flow of fuel to said burner, a spark igniter associated with said burner, a transformer having a primary and a secondary winding with said secondary winding connected to said spark igniter, an electrical power supply, a variable conduction device having input and output main terminals as part of a single main conduction path and a control terminal, an energy storage device, a circuit connecting said energy storage device, said transformer primary and said input and output terminals in series across said power supply whereby conduction by said variable conduction device will energize said spark igniter, means for activating said fuel control means when said variable conduction device is conducting to supply fuel to said burner, and circuit means connected to said control terminal of said variable conduction device including a flame-sensing device located to monitor flame from said burner and elfective to prevent conduction by said variable conduction device after ignition of fuel at said burner.
- An ignition and control system in a fluid-burning apparatus comprising, in combination, a power source, an electrically-operated means to control the flow of fluid to said apparatus and connected to said power source, means to control the flow of energizing current to said electrically-operated means including a siliconcontrolled rectifier in the presence of a flame, and a norcapacitor connected in series across said power source with said controlled rectifier whereby conduction by said controlled rectifier causes a discharge of energy into said spark coil from said capacitor, a flame-responsive variable resistance and a current-responsive element operably connected to the control electrode of said silicon-controlled rectifier acting to prevent conduction by said siliconcontrolled rectifier in the presence of a flame, and a normally closed safety switch actuated by said current-responsive element to Open the circuit to said electricallyoperated means upon failure of said flame-responsive variable resistance to perform its control function.
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41032164A | 1964-11-10 | 1964-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3484177A true US3484177A (en) | 1969-12-16 |
Family
ID=23624215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US410321A Expired - Lifetime US3484177A (en) | 1964-11-10 | 1964-11-10 | Igniter and control means |
Country Status (4)
Country | Link |
---|---|
US (1) | US3484177A (en) |
DE (1) | DE1526217A1 (en) |
ES (1) | ES318751A1 (en) |
GB (1) | GB1116093A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3583843A (en) * | 1969-05-08 | 1971-06-08 | Texas Instruments Inc | Electrothermal furnace control |
US3584988A (en) * | 1969-06-24 | 1971-06-15 | Texas Instruments Inc | Electrothermal furnace control |
US3600117A (en) * | 1969-05-08 | 1971-08-17 | Texas Instruments Inc | Furnace fuel valve energizing circuit |
US4188180A (en) * | 1977-12-02 | 1980-02-12 | Honeywell Inc. | Fuel burner safe starting system |
US20070099140A1 (en) * | 2005-11-01 | 2007-05-03 | Seven Universe Industrial Co., Ltd. | Stove suitable for various kinds of gas pressure |
US20110119951A1 (en) * | 2002-12-20 | 2011-05-26 | Bsh Bosch Und Siemens Hausgerate Gmbh | Device for determining the conductance of laundry, dryers and method for preventing deposits on electrodes |
ITVE20100003A1 (en) * | 2010-01-26 | 2011-07-27 | F I D A S R L | HIGH VOLTAGE ELECTRONIC TRANSFORMER FOR IGNITION OF THERMAL MACHINES. |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5134195Y1 (en) * | 1969-07-25 | 1976-08-24 | ||
CN109185919A (en) * | 2018-08-30 | 2019-01-11 | 珠海格力电器股份有限公司 | Pulse firing control circuit, pulse igniter and household electrical appliance |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1858265A (en) * | 1930-01-18 | 1932-05-17 | Perfection Stove Co | Burner control system |
US2171955A (en) * | 1936-06-17 | 1939-09-05 | Gen Motors Corp | Oil burner control-variable resistance with temperature type |
US3007080A (en) * | 1959-03-31 | 1961-10-31 | Acme Wire Company | Control apparatus including condition sensing means |
US3136877A (en) * | 1962-06-25 | 1964-06-09 | Bulova Watch Co Inc | Electronic thermostatic system |
US3204685A (en) * | 1963-02-15 | 1965-09-07 | Hupp Corp | Burner ignition and control system |
US3215818A (en) * | 1963-04-29 | 1965-11-02 | Gen Motors Corp | Temperature control electric circuit |
US3238992A (en) * | 1964-01-24 | 1966-03-08 | American Radiator & Standard | Solid-state control system |
US3251351A (en) * | 1963-10-14 | 1966-05-17 | Shell Oil Co | Electronic ignition system |
-
1964
- 1964-11-10 US US410321A patent/US3484177A/en not_active Expired - Lifetime
-
1965
- 1965-10-20 GB GB44441/65A patent/GB1116093A/en not_active Expired
- 1965-10-21 ES ES0318751A patent/ES318751A1/en not_active Expired
- 1965-11-09 DE DE19651526217 patent/DE1526217A1/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1858265A (en) * | 1930-01-18 | 1932-05-17 | Perfection Stove Co | Burner control system |
US2171955A (en) * | 1936-06-17 | 1939-09-05 | Gen Motors Corp | Oil burner control-variable resistance with temperature type |
US3007080A (en) * | 1959-03-31 | 1961-10-31 | Acme Wire Company | Control apparatus including condition sensing means |
US3136877A (en) * | 1962-06-25 | 1964-06-09 | Bulova Watch Co Inc | Electronic thermostatic system |
US3204685A (en) * | 1963-02-15 | 1965-09-07 | Hupp Corp | Burner ignition and control system |
US3215818A (en) * | 1963-04-29 | 1965-11-02 | Gen Motors Corp | Temperature control electric circuit |
US3251351A (en) * | 1963-10-14 | 1966-05-17 | Shell Oil Co | Electronic ignition system |
US3238992A (en) * | 1964-01-24 | 1966-03-08 | American Radiator & Standard | Solid-state control system |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3583843A (en) * | 1969-05-08 | 1971-06-08 | Texas Instruments Inc | Electrothermal furnace control |
US3600117A (en) * | 1969-05-08 | 1971-08-17 | Texas Instruments Inc | Furnace fuel valve energizing circuit |
US3584988A (en) * | 1969-06-24 | 1971-06-15 | Texas Instruments Inc | Electrothermal furnace control |
US4188180A (en) * | 1977-12-02 | 1980-02-12 | Honeywell Inc. | Fuel burner safe starting system |
US20110119951A1 (en) * | 2002-12-20 | 2011-05-26 | Bsh Bosch Und Siemens Hausgerate Gmbh | Device for determining the conductance of laundry, dryers and method for preventing deposits on electrodes |
US7975400B2 (en) * | 2002-12-20 | 2011-07-12 | Bsh Bosch Und Siemens Hausgeraete Gmbh | Device for determining the conductance of laundry, dryers and method for preventing deposits on electrodes |
US8286369B2 (en) | 2002-12-20 | 2012-10-16 | Bsh Bosch Und Siemens Hausgeraete Gmbh | Device for determining the conductance of laundry, dryers and method for preventing deposits on electrodes |
US20070099140A1 (en) * | 2005-11-01 | 2007-05-03 | Seven Universe Industrial Co., Ltd. | Stove suitable for various kinds of gas pressure |
ITVE20100003A1 (en) * | 2010-01-26 | 2011-07-27 | F I D A S R L | HIGH VOLTAGE ELECTRONIC TRANSFORMER FOR IGNITION OF THERMAL MACHINES. |
EP2354658A1 (en) * | 2010-01-26 | 2011-08-10 | F.I.D.A. S.R.L. | High voltage electronic transformer for igniting thermal machines |
Also Published As
Publication number | Publication date |
---|---|
ES318751A1 (en) | 1966-08-01 |
DE1526217A1 (en) | 1969-12-18 |
GB1116093A (en) | 1968-06-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ELTRA CORPORATION, OHIO Free format text: CERTIFIED COPY OF MERGER FILED IN THE OFFICE OF SECRETARY OF STATE OF DELAWARE ON JUNE 6, 1980, SHOWING MERGER AND CHANGE OF NAME OF ASSIGNOR;ASSIGNOR:ATREL CORPORATION;REEL/FRAME:003992/0237 Effective date: 19811020 Owner name: ELTRA CORPORATION, A CORP. OF NY Free format text: CERTIFIED COPY OF MERGER FILED IN THE OFFICE OF SECRETARY OF STATE OF DELAWARE ON JUNE 6, 1980, SHOWING MERGER AND CHANGE OF NAME OF ASSIGNOR;ASSIGNOR:ATREL CORPORATION (INTO);REEL/FRAME:003992/0237 Effective date: 19811020 |
|
AS | Assignment |
Owner name: ALLIED CORPORATION, NEW JERSEY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ELTRA CORPORATION;REEL/FRAME:004026/0293 Effective date: 19820531 Owner name: ALLIED CORPORATION; COLUMBIA RD. AND PARK AVE., MO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ELTRA CORPORATION;REEL/FRAME:004026/0293 Effective date: 19820531 |
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AS | Assignment |
Owner name: CITICORP INDUSTRIAL CREDIT, INC., ILLINOIS Free format text: SECURITY INTEREST;ASSIGNOR:PRESTOLITE ELECTRIC INCORPORATED;REEL/FRAME:004568/0105 Effective date: 19860422 Owner name: CITICORP INDUSTRIAL CREDIT, INC., 200 SOUTH WACKER Free format text: SECURITY INTEREST;ASSIGNOR:PRESTOLITE ELECTRIC INCORPORATED;REEL/FRAME:004568/0105 Effective date: 19860422 |
|
AS | Assignment |
Owner name: PRESTOLITE ELECTRIC INCORPORATED, OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALLIED CORPORATION;REEL/FRAME:005869/0230 Effective date: 19860422 Owner name: PRESTOLITE ELECTRIC INCORPORATED, A CORP. OF DE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:005869/0230 Effective date: 19860422 |
|
AS | Assignment |
Owner name: PRESTOLITE ELECTRIC INCORPORATED, OHIO Free format text: RELEASE BY SECURED PARTY OF SECURITY AGREEMENTS RECORDED ON REEL 4568 FRAME 0105 AND REEL 4626 FRAME 0084-0095;ASSIGNOR:CITICORP NORTH AMERICA, INC., FORMERLY CITICORP INDUSTRIAL CREDIT, INC.;REEL/FRAME:005967/0610 Effective date: 19911025 Owner name: PRESTOLITE ELECTRIC INCORPORATED Free format text: RELEASE BY SECURED PARTY OF SECURITY AGREEMENTS RECORDED ON REEL 4568 FRAME 0105 AND REEL 4626 FRAME 0084-0095;ASSIGNOR:CITICORP NORTH AMERICA, INC., FORMERLY CITICORP INDUSTRIAL CREDIT, INC.;REEL/FRAME:005967/0610 Effective date: 19911025 Owner name: PEI 1991 ACQUISITION, INC., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PRESTOLITE ELECTRIC INCORPORATED;REEL/FRAME:005967/0628 Effective date: 19911029 Owner name: PEI 1991 ACQUISITION, INC. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PRESTOLITE ELECTRIC INCORPORATED;REEL/FRAME:005967/0628 Effective date: 19911029 |