US2156387A - Electromagnetic latch bolt - Google Patents
Electromagnetic latch bolt Download PDFInfo
- Publication number
- US2156387A US2156387A US7806236A US2156387A US 2156387 A US2156387 A US 2156387A US 7806236 A US7806236 A US 7806236A US 2156387 A US2156387 A US 2156387A
- Authority
- US
- United States
- Prior art keywords
- bolt
- plunger
- contact
- coil
- latch bolt
- 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
- 239000004020 conductor Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
- E05B47/026—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means the bolt moving rectilinearly
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/0053—Other details of locks; Parts for engagement by bolts of fastening devices means providing a stable, i.e. indexed, position of lock parts
- E05B15/006—Spring-biased ball or roller entering a notch
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
- E05B2047/0007—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets with two or more electromagnets
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
- E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
- E05B47/0004—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being linearly movable
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/096—Sliding
- Y10T292/1014—Operating means
- Y10T292/1021—Motor
Definitions
- the present invention has for its subject matter an electro-magnetically operated latch bolt.
- the arrangement according to the invention is characterised by the fact that it comprises a bolt which can be moved toward the closing or toward the opening position in consequence of the displacement of a magnetisable plunger influenced, alternately and in opposite directions, by two electromagnetic fields, the displacement of said plunger causing partial closure of the circuit of one of the electromagnets while it causes the opening of the circuit of the other electromagnet and conversely.
- Fig. 1 is a longitudinal section through a bolt constructed in accordance with the invention.
- Fig. 2 is a cross section on the line 22 of Fig. 1.
- the electromagnetic closing device L comprises a bolt I carried by a soft iron piece 2 which constitutes a movable plunger adapted to slide in the hollow core 3 of an electromagnet having two independent windings 4 and 5.
- the ends of the plunger 2 are provided with insulating sleeves 6 and 6, which are fixed to the plunger 2 by means of screw-threaded pins l8 and I9.
- the sleeve 6 is located between the plunger 2 and the terminal stem 1 fixed thereto and the sleeve 6 is interposed between said plunger and the bolt l.
- the core is lodged in a casing 9 and fitted with two washers 20 and 2
- the rear end of the casing 9 is closed by a cover 8 having socket for reception of the stem 1 when the bolt is retracted.
- a spiral spring Ill is lodged; this spring acts upon a ball I I intended to engage one or the other of the two notches l2 and I2 in order to lock the bolt in its two positions.
- I 5 is the socket into which the bolt I enters when it is projected.
- One end of the coil 4 is connected at I6 with the contact washer 29 and the opposite end of said coil is connected with a conductor 25.
- One end of the other coil 5 is connected at I'l with the contact washer 2
- One pole of a source of current 21 is grounded at 28 on the casing of the lock and the opposite pole of said source is connected by a conductor 29 with a movable switch contact 30.
- Conductors and 26 are connected with stationary contacts 3
- the contact washer 29 is in contact with the stem. 1 and hence one pole of the source of current 21 is connected over the conductor 28, casing 9, contact Washer 25, stem 1 and connection l6 5 with one terminal of the coil 4. Electrical connection between the grounded pole of the source of current and the other coil 5, however, is interrupted due to the face that the contact washer 2
- the movable contact 35 In order to retract the bolt l, the movable contact 35 is moved to the position shown in Fig. 1 and current is thereby permitted to flow from one pole of the source 2'! over the stationary 15 contact 3!, conductor 25, coil 5, connection I B contact washer 20, casing 9 and the conductor 28 grounded thereon. Being thus energized, the coil 4 causes the plunger 2 to be moved to the left thereby retracting the bolt 1, the plunger com- 20 ing to rest with the ball 5 l engaging in the notch Hi. In the retracted position the electrical connection between the grounded conductor 28 and the connection Hi to the coil d is interrupted by the insulating sleeve 6 which, in this position of the bolt, engages the contact washer 20.
- a plunger a latch bolt carried by said plunger, two coils surrounding said plunger and adapted to be alternately energized to move the plunger in opposite directions to project and retract said bolt, means controlled by said plunger to interrupt the flow of current to each coil subsequent to energization thereof, said means including combined guide and contact members for the plunger connected with one end of each coil, and insulating members carried by the plunger alternately engageable with the respective contact members.
Description
May, 2, 1939. GOLDFlNGER 2,156,387
ELECTROMAGNET I C LATCH BOLT Filed May 5, 1936 INVENTOR' BY-' M AT 3 4M NEYS.
Patented May 2, 1939 UNITED STATES PATENT 11 Application May 5, 1936, Serial No. 78,062 In Italy May 7, 1935 2 Claims.
The present invention has for its subject matter an electro-magnetically operated latch bolt. The arrangement according to the invention is characterised by the fact that it comprises a bolt which can be moved toward the closing or toward the opening position in consequence of the displacement of a magnetisable plunger influenced, alternately and in opposite directions, by two electromagnetic fields, the displacement of said plunger causing partial closure of the circuit of one of the electromagnets while it causes the opening of the circuit of the other electromagnet and conversely.
The invention will now be described with reference to the accompanying drawing which illustrates, merely by way of example, one form of the electromagnetic bolt.
Fig. 1 is a longitudinal section through a bolt constructed in accordance with the invention. Fig. 2 is a cross section on the line 22 of Fig. 1.
The electromagnetic closing device L comprises a bolt I carried by a soft iron piece 2 which constitutes a movable plunger adapted to slide in the hollow core 3 of an electromagnet having two independent windings 4 and 5. The ends of the plunger 2 are provided with insulating sleeves 6 and 6, which are fixed to the plunger 2 by means of screw-threaded pins l8 and I9. The sleeve 6 is located between the plunger 2 and the terminal stem 1 fixed thereto and the sleeve 6 is interposed between said plunger and the bolt l. The core is lodged in a casing 9 and fitted with two washers 20 and 2| at the ends of its axial bore to serve as contact guides for the slidable portion. The rear end of the casing 9 is closed by a cover 8 having socket for reception of the stem 1 when the bolt is retracted. In a cross bore 22 a spiral spring Ill is lodged; this spring acts upon a ball I I intended to engage one or the other of the two notches l2 and I2 in order to lock the bolt in its two positions. I 5 is the socket into which the bolt I enters when it is projected.
One end of the coil 4 is connected at I6 with the contact washer 29 and the opposite end of said coil is connected with a conductor 25. One end of the other coil 5 is connected at I'l with the contact washer 2| while the opposite end of said coil is connected with the conductor 26. One pole of a source of current 21 is grounded at 28 on the casing of the lock and the opposite pole of said source is connected by a conductor 29 with a movable switch contact 30. Conductors and 26 are connected with stationary contacts 3| and 32 alternately engageable by the contact during rotary movement of the latter about its axis.
When the bolt lock is projected as shown in Fig.
1, the contact washer 29 is in contact with the stem. 1 and hence one pole of the source of current 21 is connected over the conductor 28, casing 9, contact Washer 25, stem 1 and connection l6 5 with one terminal of the coil 4. Electrical connection between the grounded pole of the source of current and the other coil 5, however, is interrupted due to the face that the contact washer 2| connected therewith is in contact with the 10 insulating sleeve 6'.
In order to retract the bolt l, the movable contact 35 is moved to the position shown in Fig. 1 and current is thereby permitted to flow from one pole of the source 2'! over the stationary 15 contact 3!, conductor 25, coil 5, connection I B contact washer 20, casing 9 and the conductor 28 grounded thereon. Being thus energized, the coil 4 causes the plunger 2 to be moved to the left thereby retracting the bolt 1, the plunger com- 20 ing to rest with the ball 5 l engaging in the notch Hi. In the retracted position the electrical connection between the grounded conductor 28 and the connection Hi to the coil d is interrupted by the insulating sleeve 6 which, in this position of the bolt, engages the contact washer 20. By 25 turning the contact 36 through a quarter of a revolution the contact member 3! is opened and the contact member 32 closed, and owing to the fact that the contact washer is in engagement with the conducting portions of the bolt I the coil 5 is energized and the bolt is restored to its projected position.
Of course the execution and application details as well as the utilisations of the device may be varied in practice within the spirit and scope of the invention and without exceeding the range of the patent.
Having now described my invention and how the same is to be carried out, what I claim as my invention is:
1. In combination, a plunger, a latch bolt carried by said plunger, two coils surrounding said plunger and adapted to be alternately energized to move the plunger in opposite directions to project and retract said bolt, means controlled by said plunger to interrupt the flow of current to each coil subsequent to energization thereof, said means including combined guide and contact members for the plunger connected with one end of each coil, and insulating members carried by the plunger alternately engageable with the respective contact members.
2. An arrangement as claimed in claim 1 characterized in that said guide and contact members are substantially annular in form and are disposed in sliding contact with said plunger.
ISIDORO GOLDFINGER.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2156387X | 1935-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2156387A true US2156387A (en) | 1939-05-02 |
Family
ID=11435192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US7806236 Expired - Lifetime US2156387A (en) | 1935-05-07 | 1936-05-05 | Electromagnetic latch bolt |
Country Status (1)
Country | Link |
---|---|
US (1) | US2156387A (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2427040A (en) * | 1945-07-17 | 1947-09-09 | Billman Walter | Electrical lock and indicator system |
US2470581A (en) * | 1946-06-15 | 1949-05-17 | Francis E Seaman | Locking system |
US2637196A (en) * | 1950-02-03 | 1953-05-05 | Seaver Fred Harmon | Lock system for automobiles |
US2690481A (en) * | 1949-03-25 | 1954-09-28 | Helen E Courtney | Switch for automatic safety locking devices and systems |
US2694920A (en) * | 1950-08-11 | 1954-11-23 | Theron L Hedgeth | Multiple door locking system and apparatus |
US2799154A (en) * | 1953-11-17 | 1957-07-16 | Josephine Beal | Locking system for automotive vehicles |
US2948561A (en) * | 1957-05-22 | 1960-08-09 | Cloyde B Eatinger | Latch mechanism |
WO1984001404A1 (en) * | 1982-09-30 | 1984-04-12 | Boeing Co | Door anti-hijacking latch/lock mechanism with pneumatic decompression override |
US4522359A (en) * | 1982-09-30 | 1985-06-11 | The Boeing Company | Door anti-hijacking latch/lock mechanism with pneumatic decompression override |
US4987968A (en) * | 1988-08-19 | 1991-01-29 | Lectron Products, Inc. | In-line solenoid transmission interlock device |
EP0877133A2 (en) * | 1997-05-07 | 1998-11-11 | IKON AKTIENGESELLSCHAFT Präzisionstechnik | Bistable magnetic locking device |
US5842364A (en) * | 1996-06-21 | 1998-12-01 | Oliver; Richard D. | Vehicle immobilizing system |
US5941106A (en) * | 1994-08-26 | 1999-08-24 | Northwind Industries, Inc. | Electronic remote controlled lock |
WO2000048207A2 (en) * | 1999-02-09 | 2000-08-17 | Nikolai Sergeevich Babich | Electromagnet and use thereof in closure devices |
US20040011609A1 (en) * | 2000-08-02 | 2004-01-22 | Wolfgang Schmid | Parking brake, especially for an automotive gearbox |
US20040239126A1 (en) * | 2001-10-04 | 2004-12-02 | PRATT John | Pressure sensing dead bolt |
US6866226B2 (en) | 2001-10-04 | 2005-03-15 | Hartwell Corporation | Pressure responsive blowout latch |
US6866227B2 (en) | 2001-10-04 | 2005-03-15 | Hartwell Corporation | Pressure responsive blowout latch with reservoir |
-
1936
- 1936-05-05 US US7806236 patent/US2156387A/en not_active Expired - Lifetime
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2427040A (en) * | 1945-07-17 | 1947-09-09 | Billman Walter | Electrical lock and indicator system |
US2470581A (en) * | 1946-06-15 | 1949-05-17 | Francis E Seaman | Locking system |
US2690481A (en) * | 1949-03-25 | 1954-09-28 | Helen E Courtney | Switch for automatic safety locking devices and systems |
US2637196A (en) * | 1950-02-03 | 1953-05-05 | Seaver Fred Harmon | Lock system for automobiles |
US2694920A (en) * | 1950-08-11 | 1954-11-23 | Theron L Hedgeth | Multiple door locking system and apparatus |
US2799154A (en) * | 1953-11-17 | 1957-07-16 | Josephine Beal | Locking system for automotive vehicles |
US2948561A (en) * | 1957-05-22 | 1960-08-09 | Cloyde B Eatinger | Latch mechanism |
WO1984001404A1 (en) * | 1982-09-30 | 1984-04-12 | Boeing Co | Door anti-hijacking latch/lock mechanism with pneumatic decompression override |
US4522359A (en) * | 1982-09-30 | 1985-06-11 | The Boeing Company | Door anti-hijacking latch/lock mechanism with pneumatic decompression override |
US4987968A (en) * | 1988-08-19 | 1991-01-29 | Lectron Products, Inc. | In-line solenoid transmission interlock device |
US5941106A (en) * | 1994-08-26 | 1999-08-24 | Northwind Industries, Inc. | Electronic remote controlled lock |
US5842364A (en) * | 1996-06-21 | 1998-12-01 | Oliver; Richard D. | Vehicle immobilizing system |
EP0877133A2 (en) * | 1997-05-07 | 1998-11-11 | IKON AKTIENGESELLSCHAFT Präzisionstechnik | Bistable magnetic locking device |
EP0877133A3 (en) * | 1997-05-07 | 1999-09-01 | IKON AKTIENGESELLSCHAFT Präzisionstechnik | Bistable magnetic locking device |
WO2000048207A2 (en) * | 1999-02-09 | 2000-08-17 | Nikolai Sergeevich Babich | Electromagnet and use thereof in closure devices |
WO2000048207A3 (en) * | 1999-02-09 | 2001-10-04 | Nikolai Sergeevich Babich | Electromagnet and use thereof in closure devices |
US6823976B2 (en) * | 2000-08-02 | 2004-11-30 | Zf Friedrichshafen Ag | Parking brake, especially for an automotive gearbox |
US20040011609A1 (en) * | 2000-08-02 | 2004-01-22 | Wolfgang Schmid | Parking brake, especially for an automotive gearbox |
US20040239126A1 (en) * | 2001-10-04 | 2004-12-02 | PRATT John | Pressure sensing dead bolt |
US6866226B2 (en) | 2001-10-04 | 2005-03-15 | Hartwell Corporation | Pressure responsive blowout latch |
US6866227B2 (en) | 2001-10-04 | 2005-03-15 | Hartwell Corporation | Pressure responsive blowout latch with reservoir |
US20050116100A1 (en) * | 2001-10-04 | 2005-06-02 | Pratt John D. | Pressure responsive blowout latch |
US20070164572A9 (en) * | 2001-10-04 | 2007-07-19 | PRATT John | Pressure sensing dead bolt |
US7255376B2 (en) | 2001-10-04 | 2007-08-14 | Hartwell Corporation | Pressure sensing dead bolt |
US7578475B2 (en) | 2001-10-04 | 2009-08-25 | Hartwell Corporation | Pressure responsive blowout latch |
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