US3837192A - Electric lock for emergency exit door - Google Patents

Electric lock for emergency exit door Download PDF

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Publication number
US3837192A
US3837192A US31644072A US3837192A US 3837192 A US3837192 A US 3837192A US 31644072 A US31644072 A US 31644072A US 3837192 A US3837192 A US 3837192A
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US
United States
Prior art keywords
door
bolt
lock
electromagnet
lock according
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
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English (en)
Inventor
J Arouete
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from FR7147207A external-priority patent/FR2166533A5/fr
Priority claimed from FR7234175A external-priority patent/FR2200875A6/fr
Application filed by Individual filed Critical Individual
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Publication of US3837192A publication Critical patent/US3837192A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • E05B65/00—Locks or fastenings for special use
    • E05B65/10—Locks or fastenings for special use for panic or emergency doors
    • E05B65/108—Electronically controlled emergency exits
    • 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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/10—Locks or fastenings for special use for panic or emergency doors
    • E05B65/1006—Locks or fastenings for special use for panic or emergency doors of the vertical rod type
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C7/00—Fastening devices specially adapted for two wings
    • E05C7/04—Fastening devices specially adapted for two wings for wings which abut when closed
    • 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
    • Y10T292/0801—Multiple
    • Y10T292/0834—Sliding
    • Y10T292/0836—Operating means
    • Y10T292/0838—Lever and push or pull rod
    • 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
    • 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
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5155—Door
    • Y10T70/5159—Emergency exit
    • 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
    • Y10T70/00—Locks
    • Y10T70/80—Parts, attachments, accessories and adjuncts
    • Y10T70/8027—Condition indicators
    • Y10T70/827—Attention-directing

Definitions

  • a lock for an emergency exit door has an electromagnet with a movable core for actuating a bolt which cooperates with a striker box.
  • the bolt When the electromagnet is energized the bolt is held in firm engagement with the striker box and the bolt remains in this position after an interruption of the current to keep the door closed, but the force urging the bolt against the striker box is cancelled so that the door may be opened by exerting a small pressure against the door.
  • the present invention relates to an electric lock for an emergency exit door capable of being opened by one or more remote control switches, wherein the opening of the door is facilitated by a current failure or by the accidental destruction of the circuit.
  • Electric locks have been used for a long time providing a closure of the lock by an electromagnet which causes the bolt to project; an opening of the lock by cutting off the current and by returning the bolt into the lock, either by the action of a spring or by the action of a chamfered edge at the end of the bolt.
  • Such locks have never been used for emergency exit doors by reason of a number of disadvantages; risk of breakage of the return spring of the bolt, risk of forgetting to unlock the conventional locks of the emergency door, absence of control elements, and other disadvantages which create the inherent danger of being ineffective or non-functioning if an immediate opening of the emergency door is needed during a disaster.
  • a preferred embodiment of the invention enables these disadvantages to be avoided by a series of security and control devices which assure the lock of a real effectiveness in its use for emergency doors.
  • One embodiment of the invention is an electromagnetic lock which is mounted at the top of the door frame, and comprising two bolts, one for each door, both actuated by an electromagnet.
  • the bolts may have a movement in the vertical direction. They are preferably not returned by a spring. When the electromagnet is cut off from the circuit the bolts may remain in the lowered position in which they project from the lock.
  • Each bolt may carry at its front end a cylindrical roller. The latter preferably enters into contact with a surface of the striker box which may comprise two opposed slopes to permit the movement of the door in the opening direction as well as in the closing direction, when the electromagnet is cut out of the circuit, and the projecting bolt does not prevent this movement.
  • This device operates as follows: In the opening or closing direction, the surface of the striker box with its two slopes drives back the bolt, the cylinder of the latter rolling on the rail of the striker box.
  • the electromagnet When the electromagnet is energized in the circuit, with the door in the closed position, the cylinder of each bolt is locked against the corresponding slope of the striker box, which then acts as a stop and prevents opening of the door.
  • the current is interrupted, the bolt is freed and if the door is pushed, the first slope of the rail of the striker box pushes back the bolt, permitting the opening of the door.
  • the opposing slope pushes back the bolt whose roller will roll on the rail and the door can be re-closed in spite of the projecting position of the bolt.
  • a small electric pressure switch is placed opposite the bolt of the conventional lock, either on the inside of the electromagnetic lock (one part of which then serves as a striker box for the conventional lock) or on the outside of the electric lock, in a separate striker box.
  • This switch is preferably actuated by the bolt of the conventional lock in the following manner: in the projecting position of the bolt, the bolt rests on the button of the switch and cuts out the latter; in the retracted position of the bolt, that is to say when the conventional lock is open, the released switch is closed.
  • This switch can be placed in an electrical circuit (the description of an example of which will follow) so as to provide an indication of the state of the conventional lock, either open or closed.
  • This switch may be connected in series with the electromagnet of the electric lock.
  • the circuit may further comprise cut-out switches situated at different points of the room (e.g., in positions where an employee is stationed) and also comprise an ammeter situated at a permanent surveillance point, the deviation of which will indicate that all the security requirements are in effect, viz. voltage applied to the electric lock, conventional lock open.
  • a remote control element is provided since, in the embodiment which has just been described, a voltage can be applied to the electric lock while the door is open.
  • the remote control element for making this impossible and to assure the possibility of remote control of the security elements of the emergency door is preferably a switch disposed in the lock and operable by a stop mounted on the door so that the door comes into the closed position resting on the switch. This switch may also be connected in series in the circuit. Thus if the door has remained open, no voltage can be applied to the electric lock and this condition will be visible on the ammeter indicator.
  • FIG. 1 shows a front view of a first electromagnetic lock according to the invention
  • FIGS. 2 and 3 are vertical cross-sections taken along the line A-B of FIG. 1, when the door is respectively closed and open;
  • FIGS. 4 and 5 are vertical cross-sections taken along the line C-D of FIG. 1 when the door is respectively closed and open;
  • FIG. 6 is a diagram of an electric circuit for the lock
  • FIG. 7 illustrates a circuit diagram for a plurality of doors
  • FIG. 8 illustrates a second embodiment
  • FIG. 9 illustrates a third embodiment
  • FIG. 10 a modification of said third embodiment
  • FIG. 11 shows a front view of an alternative bolt and striker box arrangement for the electromagnetic lock of FIG. 1;-
  • FIG. 12 is a cr0ss-section along line A-B of FIG. 11 and FIG. 13 is a diagram similar to that of FIG. 6 but additionally including an alarm means.
  • the electromagnetic lock 1 is mounted in the lintel regionof a door-frame for the two doors 22,23 of a double door.
  • the electromagnetic lock 1 has an electromagnet 2 whose core 3 acts on rods 4 and 5.
  • the rods 4 and 5 act on angle pieces or bell cranks 6 and 7 which are rotatable about pivot points 8 and 9, and
  • each of the bolts comprises a cylinder 14, fixed at rotatable about its axis on the bolt.
  • the bolts 18 and 19 of the conventional locks 20 and 21 used on the two emergency exit doors are introduced in the closed postion into two apertures 24 and 25 of the electromagnetic lock, which apertures serve in that case as a striker box for each conventional lock.
  • Two switches 26 and 27 disposed opposite the apertures 24, 25 are in the open position when the bolts 18 and 19 are introduced into the holes 24 and 25.
  • FIG. 2 shows the door 22 in the closed position, in line with the frame on which the lock 1 is fixed with its bolt 12 in the lowered position.
  • the cylinder 14 at the end of the rod comes to bear against the stop 16 which serves as striker box, and which comprises a doublesloped rail 33 and 34.
  • the stop 16 which serves as striker box, and which comprises a doublesloped rail 33 and 34.
  • FIG. 5 shows the same section when the door 32 is opened and illustrates that the released switch 30 is opened. This switch provides an indication of the open or closed status of the door 22.
  • FIG. 6 shows the electrical circuit inside and outside the lock.
  • electrical current enters by the terminal 33 and then passes through the switches 31, 27, 26, 30, into the electromagnet 2, all these elements being connected in series, and then leaves the lock by the terminal 44.
  • the series circuit therefore passes successively through connection or contact points 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43 and leaves at 44.
  • the electrical circuit is as follows: the source of supply which is the electricity mains, leaves from the point 45, passes through a switch 46 and the ammeter indicator 47 situated in the room (shown by the dotted line 48) of the person responsible for monitoring the apparatus, then enters in the lock at 33, leaves again at 44, then passes through the switches 49, 50, 51, 52 etc.
  • the ammeter 45 does not deviate, illustrating that one of the security conditions is not fulfilled. Reciprocally, the ammeter deviates only if the switches 26, 27, 30 and 31 are closed, that is to say, conventional lock opened and emergency door closed, all other switches closed.
  • FIG. 7 shows the electric circuit for the connection of several doors, with ammeter indicators for each door.
  • the source of current is at 45 and 53.
  • the switches 49, 50, 51 52 etc. are in series in a first part of the circuit connecting the two poles of the mains to points 54 and 55.
  • each secondary cirucit having its ammeter indicator 47, 47a, and 471), etc. .in series with each electromagnetic lock 1, la, 1b, etc.
  • the cutting out of a single one of the switches 46, 49, 50, 51, 52, etc. interrupts the current in all of the locks and therefore opens all the doors at one time.
  • the ammeter indicators grouped in the chamber 48 permit the individual surveillance of each emergency door.
  • a different assembly may be required because in two circumstances the above-described realizeation may be insufficient. These two circumstances are the following: firstly, when the emergency door is flush with the ceiling and when there is no room on the frame to accommodate the lock, and secondly when the elements of the conventional lock and of the emergency lock would obstruct one another.
  • the descriptions which will follow concern an improvement of the preceding embodiment, and one in which the conventional lock is incorporated in the electrical emergency locking systemsThis isachieved in that the cylindrical bolt serves at the same time for locking during emergency use and for locking during conventional use, and in that striker boxes are located on the high and low horizontal portions of the frame, the lock itself being mounted on the door. According to FIG.
  • the lock 1 is fixed to the door 22; it comprises the electromagnet 2 whose core 3 acts on the arms 4 and 5 which act on the angle pieces or bell cranks 6 and 7. These angle pieces are rotatable about points 8 and 9 and push against bolts 12 and 13 each of which has a cylinder 14 and 15 at its extremity.
  • the stop of the striker box is identical to that of FIGS. 2 and 3 but the situations are reversed: the striker boxes 16 and 16a in FIG. 8 are fixed to the frames above and below, the operating mechanism of the electromagnetic lock is the same as before. In FIG. 8 the extremity of the core 3 moves opposite the bolt 18 of a conventional lock 20 incorporated in the electric lock 1.
  • FIG. 9 Another embodiment comprises only a single combined electric-and-conventional lock for both doors of a double door.
  • This embodiment is illustrated in FIG. 9, where each door 22 and 23 comprises adjacent locking parts 1 and 1a oppositely mounted on each door.
  • One of the doors comprises the driving electromagnet 2 and the conventional lock 20.
  • the core 3 of the electromagnet 2 pushes the piece 30 to the right (FIG. 9) which pushes the piece 3b to the right (FIG. 9).
  • the bolt 18 of the conventional lock 20 actuating the core 2 of the electromagnet permits all elements to be maintained in the locking position when the electromagnet is at rest.
  • the electromagnetconventional lock assembly of FIG. 9 can be fixed to one of the doors in contact with part 1, or (as shown in FIG. 10) can be fixed to the door frame, the movement being transmitted by a long rod.
  • One ofthe two arms of the angle pieces or bell cranks 6, 7 is preferably longer than the other so that force transmitted to the electromagnet or to the bolt may be increased depending on the arrangement of the angle piece or bell cranks 6, 7.
  • FIGS. 11 and 12 show the electromagnetic lock 1 with the bolt 12 having a cylinder 14 fixed rotatably to the bolt.
  • the bolt 12 has on one side a projection 14a forming an abutment for engaging a long rod 57.
  • the rod 57 locking a similar bolt 59 fixed to the lower end of the door 22 against a striker box 66 attached in turn to the floor so that when the electromagnet is energized, the door will be locked at an upper point and a lower point.
  • the lock is fixed to the upper edge of the door frame. While in FIG. 11 the striker boxes and bolts interconnected by the rod 57 are shown for one door only of a double door it is evident that a similar arrangement is provided for the other door.
  • the striker box consists of two parts, an angle piece 16a fixed to the door at one side and the rail of the striker box 16 mounted at the other side.
  • This rail is a profiled piece to triangular or trapezoidal shape.
  • This latter part is fixed to the angle piece by two metallic screws 16b which may slide in a slot of the angle piece so that the position of part 16 may be adjusted with respect to the cylinder of the bolt when the lock 1 is mounted on the door.
  • the part 16 having a triangular or trapezoidal cross-section is mounted by its base on the angle piece.
  • the two sides adjacent the base are the two slopes 33 and 34 which have already been described hereinbefore.
  • the slope 33 on which the cylinder of the bolt rolls during the opening movement defines an angle a of with the base. If this angle is greater the horizontal component of the force of the bolt against the striker box, component which conditions the friction of the bolt against the lock, is too high with respect to the vertical, upwardly directed component, and the force applied against the door will lock the bolt with respect to the lock.
  • the bolt has at one side near the cylinder 14 a projection 14a, which bears against the upper end of a long rod 57 which in turn bears with its lower end against the bolt 59 fixed to the door by a metallic frame 62.
  • the vertical movement of the bolt 59 is limited by a slot 63 in which a projection 64 of the bolt 59 slides.
  • the cylinder 65 of the bolt 59 bears against the striker box 66 fixed to the floor and is similar to part 16.
  • angle 7 of the slope 67 is smaller than the angle a of the slope 33 so that during the opening movement of the door the bolt 12 will move more rapidly upward than the bolt 59 and its rod 57 so that there will be no friction between the upper end of the rod 57 and the projection 14a of the bolt.
  • the contact between rod 57 and projection 14a will be established only at the moment when the door is in the closed position.
  • an acoustic alarm is incorporated in the lock and in the control panel so that if one of the above mentioned unusual situations occurs, the ammeter will no longer deviate and in addition an alarm will be started in the lock and on the control panel and a light will be illuminated on the control panel.
  • the switches 31, 27, 26 and 30 of FIG. 6 are replaced by change-over switches 31, 27, 26 and 30 in FIG. 13. These change-over switches, in their first, normal position, close the circuit to energize the electromagnet to permit the current to pass through the electromagnet.
  • a lock in combination with an emergency exit door, and a door frame said lock comprising:
  • an electromagnet having a core movable between an extended and a retracted position and an energizing circuit
  • said intermediate member is a pivotably mounted bell crank pivotably connected at one end to said core and cooperating at its other end with said bolt and wherein the longitudinal axis of said bolt is offset from the pivotal mounting of said bell crank.
  • a lock according to claim 1 including a conventional mechanical lock and a switch, wherein said conventional mechanical lock comprises a bolt cooperating with said switch and wherein said switch is arranged in the circuit of said electromagnet and in series therewith.
  • a lock according to claim 1 including a stop and a change over switch which are provided on said door, said stop being adapted to actuate said change-over switch when said door is closed, said switch being located in the circuit of said electromagnet in series therewith.
  • a lock according to claim 2 wherein the bell crank has two arms of different lengths, the longer arm being pivotably connected to said movable core and the short arm cooperating with said bolt.
  • a lock according to claim 1 including two intermediate members, upper and lower bolts, upper and lower striker boxes and a conventional mechanical lock having a bolt wherein the core of said electromagnet is connected to said two intermediate members adapted to actuate said upper and lower bolts which are to be pressed against said upper and lower striker boxes, respectively, and said bolt is adapted to actuate the core of said electromagnet.
  • striker box fixed to the door comprises an angle piece being mounted with one arm on the door, and a part having upwardly converging side surfaces fixed by means of two screws extending through an elongated slot in the said other arm of said angle piece, the slot having a length greater than the distance between the screws.
  • a lock according to claim 10 including a vertical rod, a lower bolt and a striker box having two slopes and fixed to the floor wherein the bolt has a downwardly extending projection for engagement with said vertical rod extending along the door and bearing against said lower bolt which cooperates with said striker box.
  • a lock according to claim 1 characterized in that an acoustic alarm is provided in the circuit and that the alarm is adapted to be energized when the current supply to the electromagnet is interrupted.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Lock And Its Accessories (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
US31644072 1971-12-29 1972-12-19 Electric lock for emergency exit door Expired - Lifetime US3837192A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7147207A FR2166533A5 (enrdf_load_stackoverflow) 1971-12-29 1971-12-29
FR7234175A FR2200875A6 (enrdf_load_stackoverflow) 1972-09-27 1972-09-27

Publications (1)

Publication Number Publication Date
US3837192A true US3837192A (en) 1974-09-24

Family

ID=26216797

Family Applications (1)

Application Number Title Priority Date Filing Date
US31644072 Expired - Lifetime US3837192A (en) 1971-12-29 1972-12-19 Electric lock for emergency exit door

Country Status (5)

Country Link
US (1) US3837192A (enrdf_load_stackoverflow)
JP (1) JPS5228080B2 (enrdf_load_stackoverflow)
DE (1) DE2261385C3 (enrdf_load_stackoverflow)
GB (1) GB1354210A (enrdf_load_stackoverflow)
IT (1) IT973031B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053939A (en) * 1974-11-25 1977-10-11 Kokusai Gijutsu Kaihatsu Kabushiki Kaisha Electric lock system
US20170253000A1 (en) * 2016-03-03 2017-09-07 Juicero, Inc. Juicer with locking mechanism

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547851B1 (fr) * 1983-06-22 1985-09-13 Arouete J Serrure electrique telecommandee
FR2565282B2 (fr) * 1983-06-22 1986-12-12 Arouete J Serrure electrique telecommandee
DE3507305C2 (de) * 1985-03-01 1987-04-30 Fritz Fuss Kg, 7470 Albstadt Vorrichtung zur Betätigung eines Freigaberiegels
DE3532057A1 (de) * 1985-06-28 1987-01-08 Amiet Ag Schloss, insbesondere fuer taschen und koffer
DE8705383U1 (de) * 1987-04-10 1987-08-13 Bks Gmbh, 42549 Velbert Elektromagnetisch verriegelbarer Drehhebel
DE3926163C2 (de) * 1989-08-08 1994-01-20 Rwe Energie Ag Fluchttür für technische Anlagen
DE4124944C1 (enrdf_load_stackoverflow) * 1991-07-27 1992-08-13 Dorma Gmbh + Co. Kg, 5828 Ennepetal, De
DE4322622C1 (de) * 1993-07-07 1995-02-02 Dorma Gmbh & Co Kg Entriegelungsvorrichtung für eine zweiflügelige, einen Stand- und Gangflügel umfassende Tür
DE202012012668U1 (de) * 2012-11-26 2013-10-29 Vladimir S. Leonov Magnetelektrisches, unsichtbares Kodeschloss

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1052488A (en) * 1911-07-26 1913-02-11 Charles Legrand Electric lock.
US1177637A (en) * 1916-01-29 1916-04-04 Harvey Lane Automatic sash-lock.
US1270264A (en) * 1917-09-29 1918-06-25 Int Time Recording Co Ltd Interlocking door system.
US1534886A (en) * 1921-07-30 1925-04-21 F J Brooker Burglarproof device
US1927354A (en) * 1932-11-22 1933-09-19 George L Abbott Lock
GB431814A (en) * 1934-01-16 1935-07-16 Beales Lee Improvements in or connected with fastening means for doors, windows, fan-lights andother hinged and slidable members
US2043550A (en) * 1935-05-31 1936-06-09 Mumbrauer William Door locking mechanism
US3751086A (en) * 1972-07-12 1973-08-07 A Geringer Fail-safe means for solenoid actuated devices

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1052488A (en) * 1911-07-26 1913-02-11 Charles Legrand Electric lock.
US1177637A (en) * 1916-01-29 1916-04-04 Harvey Lane Automatic sash-lock.
US1270264A (en) * 1917-09-29 1918-06-25 Int Time Recording Co Ltd Interlocking door system.
US1534886A (en) * 1921-07-30 1925-04-21 F J Brooker Burglarproof device
US1927354A (en) * 1932-11-22 1933-09-19 George L Abbott Lock
GB431814A (en) * 1934-01-16 1935-07-16 Beales Lee Improvements in or connected with fastening means for doors, windows, fan-lights andother hinged and slidable members
US2043550A (en) * 1935-05-31 1936-06-09 Mumbrauer William Door locking mechanism
US3751086A (en) * 1972-07-12 1973-08-07 A Geringer Fail-safe means for solenoid actuated devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053939A (en) * 1974-11-25 1977-10-11 Kokusai Gijutsu Kaihatsu Kabushiki Kaisha Electric lock system
US20170253000A1 (en) * 2016-03-03 2017-09-07 Juicero, Inc. Juicer with locking mechanism

Also Published As

Publication number Publication date
GB1354210A (en) 1974-06-05
JPS4877999A (enrdf_load_stackoverflow) 1973-10-19
DE2261385B2 (de) 1978-02-02
JPS5228080B2 (enrdf_load_stackoverflow) 1977-07-23
IT973031B (it) 1974-06-10
DE2261385A1 (de) 1973-07-05
DE2261385C3 (de) 1978-09-28

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