WO2014169886A1 - Equipment for access control - Google Patents

Equipment for access control Download PDF

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Publication number
WO2014169886A1
WO2014169886A1 PCT/CZ2014/000037 CZ2014000037W WO2014169886A1 WO 2014169886 A1 WO2014169886 A1 WO 2014169886A1 CZ 2014000037 W CZ2014000037 W CZ 2014000037W WO 2014169886 A1 WO2014169886 A1 WO 2014169886A1
Authority
WO
WIPO (PCT)
Prior art keywords
equipment
rotor
access control
direct
current motor
Prior art date
Application number
PCT/CZ2014/000037
Other languages
French (fr)
Inventor
Václav KONFRŠT
Original Assignee
Cominfo A.S.
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 Cominfo A.S. filed Critical Cominfo A.S.
Publication of WO2014169886A1 publication Critical patent/WO2014169886A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/614—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
    • E05Y2201/21—Brakes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
    • E05Y2201/252—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore characterised by type of friction
    • E05Y2201/258—Magnetic or electromagnetic friction
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/43—Motors
    • E05Y2201/434—Electromotors; Details thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/40—Application of doors, windows, wings or fittings thereof for gates

Definitions

  • the invention relates to equipment for access control, especially an access to a market shopping area, the equipment being provided with a swing gate coupled with a drive unit and a control unit.
  • An access into a shopping area of a big shopping centre of a supermarket type is usually controlled by an equipment enabling persons only to enter inside. To return outside one has to go through a cash-desk section.
  • Such an equipment for access control comprise a single- or double-side gate which opens automatically when a customer approaches the control point, no matter if he holds only a shopping basket or pushes a shopping cart. It is not possible to pass through the control point in an opposite direction as the gate strongly resists any such effort and it cannot be moved from inside the shopping area without being mechanically damaged.
  • the barrier of the discussed type typically comprises a column carrying a gate, the swinging movement of which is controlled by a drive system activated by a signal from a sensor detecting movements of persons.
  • the drive system automatically opens the barrier when anybody tries to enter the inside area and closes the barrier when no further persons pass by.
  • the drive system comprises a subtle high-speed motor with a practically self-clamping clutch.
  • the sensor usually comprises an electronic optical radar or a similar equipment.
  • the equipment as such has to be sufficiently robust to prevent an illegal action, i.e. non-licensed passage from the shopping area outside.
  • An equipment of the said type is described e.g. in the document WO 2008/000360. Current equipment preventing a passage in an undesired direction nevertheless do not allow a passage in an opposite direction even In an emergency case, like a fire, when for safety reasons it is necessary to evacuate all persons out of the shopping area in a relatively very short time.
  • equipment for access control the equipment being provided with a barrier coupled with a drive unit and a control unit in accordance with the present invention
  • the drive unit is provided with coaxially arranged direct-current motor and electromagnetic friction brake, the brake friction disk being coupled with a rotor of the motor.
  • the said direct-current motor may have either inside or outside arranged rotor.
  • the electromagnetic friction brake is provided with a toroidal excitation coil arranged coaxially with the rotor of the direct-current motor.
  • the rotor of the direct-current motor is coupled with the brake friction disk by means of at least two pegs arranged in parallel with the friction disk axis, the friction disk having a shape of a toroid is traversable on the pegs in the axial direction.
  • the control unit is provided with electronic optic radar.
  • the equipment having a low-speed direct-current motor has sufficient moment for operation functions, without any cogging-effect, i.e. without moment pulses by low speed operation which are typical for applications with step motors.
  • the friction brake provides for precise control of the barrier passive resistance up to the value of 100 Nm which can be adjusted in time and angle.
  • the brake further provides for locking a working position by a residual magnetism due to remanence of the magnetic circuit material.
  • the remanence of the magnetic circuit material minimizes energy consumption for a return of the bar into basic position.
  • the equipment according the invention sensitively follows movement of persons passing by and by controlled action creates a passive resistance to illegal passing through.
  • the construction of the equipment also offers minimal demands on energy while in stillstand.
  • Fig. 1 shows a principle arrangement of a drive system
  • Fig. 2 presents an internal design of the drive system according Fig. 1 as shown in a sectional view in an a longitudinal direction
  • FIG. 1 and Fig. 2 there is shown an equipment for access control provided with a drive system comprising a low-speed direct-current motor 1 and an electromagnetic friction brake 2, the motor 1 and the brake being in a mutually coaxial arrangement carried by a column 3.
  • the drive system actuates a swinging barrier.
  • Fig. 1 and Fig. 2 show only a part of the barrier which substantially has a shape of a rectangular frame 4.
  • the frame 4 carries a disk which from the in-coming side, towards approaching persons shows a white arrow in a blue field, while from the opposite side the disk shows a white stripe in a red field, which are commonly known traffic symbols of a directed way and forbidden way resp.
  • the shown embodiment applies a direct-current motor 1 with an outside rotor 5 and inside stator 6 mounted on a fixed shaft 7, the shaft 7 providing for an axis of the drive system.
  • the rotor 5 seating in a first bearing 8 and a second bearing 9 is directly connected with the barrier frame 4.
  • the frame 4 is in a swing fit arranged at an extended part of the fixed shaft 7 or the column 3 as the case may be.
  • the electromagnetic friction brake 2 has a toroidal excitation coil 13 arranged spaced apart from the direct-current motor 1 and coaxially with the outside rotor 5 of the d-c motor 1.
  • a toroidal friction disk 12 of the electromagnetic brake 2 is positioned within the space between the rotor 5 and the excitation coil 13.
  • the friction disk 12 is coupled with the rotor 5 of d-c motor 1 by means of three pegs 11 fixed to the body of the rotor 5.
  • the pegs 11 are arranged coaxially with an axis of the friction disk 12 and the axis of the fixed shaft 7.
  • the friction disk 12 is traversable along the pegs 11 in axial direction. At least two pegs 11 have to be applied, for a good transfer of a braking force just three pegs 11 are sufficient. Nevertheless even more pegs 11 can be used.
  • control unit In the presented embodiment of the equipment the control unit is located in the column 3, just above the drive unit.
  • the power supply wires both for the control and drive units are installed inside the column 3 and through the shaft 7 which is hollow.
  • the control unit is provided with a sensor for detection of persons approaching the equipment.
  • a preferred type of such a sensor is e.g. en electronic optic radar.
  • the equipment may be provided even with a d-c motor with an inside arranged rotor.
  • a d-c motor with an inside arranged rotor.
  • Such an inside rotor is coupled with a tube which carries the gate and simultaneously is coupled with the friction disk 12 of the electromagnetic brake 2.
  • the equipment is activated by a signal from the sensor.
  • the electromagnetic brake 2 In response to the signal the electromagnetic brake 2 is demagnetized and the d-c motor 1 started.
  • the friction brake 2 stops the rotor 5 and thus the gate movement in a predetermined position.
  • the friction brake 2 power supply is switched-off, but the residual magnetism holds the gate in an open position as long as a passage of persons is detected.
  • the gate With no response from the sensor the gate returns to the original passage closing position, where it is again only due to the residual magnetism of the electromagnetic friction brake 2 magnetic circuit.
  • no mechanical force is active, i.e.
  • the gate is not coupled with any other mechanism, for opening the gate outwards from the shopping area it is necessary to overcome a friction moment between the friction disk 12 coupled with rotor 5 and the contact surface of the friction brake 2 fixed to the column 3.
  • the friction moment is excited by an electric current flowing through the excitation coil 13 of the friction brake 2.
  • This moment can be pre-set either by application of a magnetic material of required properties or by a value of magnetizing current of the excitation coil 13 or by both the said means.
  • the stillstand position of the gate is secured by a remanence induction of the brake 2 magnetic circuit, thus without any further electric current consumption.
  • the above described equipment meets all safety regulations and simultaneously offers all function required from equipment of the kind.
  • the suitable direct-current motor 1 is described in the document WO 2012155868.
  • the construction of the motor shows no moment variations irrespective to motor speed as is the case by step motors.
  • the present invention is designed for application is shopping areas of the supermarket type.

Abstract

To control access of persons, especially access in and out of market shopping areas there is designed an equipment comprising a swing gate with a drive unit and a control unit, where the drive unit where the drive unit is provided with coaxially arranged direct-current motor (1) and electromagnetic friction brake (2), the brake friction disk (12) being coupled with a rotor (5) of the d-c motor (1).

Description

EQUIPMENT FOR ACCESS CONTROL
Technical Field
The invention relates to equipment for access control, especially an access to a market shopping area, the equipment being provided with a swing gate coupled with a drive unit and a control unit.
Background of the Invention
An access into a shopping area of a big shopping centre of a supermarket type is usually controlled by an equipment enabling persons only to enter inside. To return outside one has to go through a cash-desk section. Such an equipment for access control comprise a single- or double-side gate which opens automatically when a customer approaches the control point, no matter if he holds only a shopping basket or pushes a shopping cart. It is not possible to pass through the control point in an opposite direction as the gate strongly resists any such effort and it cannot be moved from inside the shopping area without being mechanically damaged. The barrier of the discussed type typically comprises a column carrying a gate, the swinging movement of which is controlled by a drive system activated by a signal from a sensor detecting movements of persons. The drive system automatically opens the barrier when anybody tries to enter the inside area and closes the barrier when no further persons pass by. The drive system comprises a subtle high-speed motor with a practically self-clamping clutch. The sensor usually comprises an electronic optical radar or a similar equipment. The equipment as such has to be sufficiently robust to prevent an illegal action, i.e. non-licensed passage from the shopping area outside. An equipment of the said type is described e.g. in the document WO 2008/000360. Current equipment preventing a passage in an undesired direction nevertheless do not allow a passage in an opposite direction even In an emergency case, like a fire, when for safety reasons it is necessary to evacuate all persons out of the shopping area in a relatively very short time. Such a state contravenes the European Community safety regulations which have been enforced to prevent serious casualties caused by resistivity of the existing barriers when somebody tried to pass during an emergency state. The demand to enable a pass when gently touched during a movement in the allowed direction and simultaneously presenting a resistance of up to 100 Nm to prevent an illegal breakthrough in the non-allowed direction cannot be technically achieved by the construction featuring only one action member, a high-speed motor and a high-ratio gear-box, giving high inertial energy at the shaft out. In known designs the demand on a limited force to overcome the barrier during danger satiations in shopping areas is solved by an additional clutch allowing for a slip due to a mechanically adjustable limit resistance. Such a solution does not allow for a new requirement of a resistance control according the actual position of the barrier gate, but its complicacy results in a high failure rate and corresponding high maintenance costs.
It is an object of the invention to create equipment featuring sufficient resistance against any pass through the gate in an illegal direction but in a case of emergency allowing any person to overcome the barrier when applying appropriate force and simultaneously eliminating any possibility of both a damage to the equipment and injury to people trying to escape from the area,
Disclosure and Object of the Invention
The foregoing objects are achieved and the present problems solved by equipment for access control, the equipment being provided with a barrier coupled with a drive unit and a control unit in accordance with the present invention, where the drive unit is provided with coaxially arranged direct-current motor and electromagnetic friction brake, the brake friction disk being coupled with a rotor of the motor. The said direct-current motor may have either inside or outside arranged rotor. Further in accordance with the present invention the electromagnetic friction brake is provided with a toroidal excitation coil arranged coaxially with the rotor of the direct-current motor. Still further in accordance with the invention the rotor of the direct-current motor is coupled with the brake friction disk by means of at least two pegs arranged in parallel with the friction disk axis, the friction disk having a shape of a toroid is traversable on the pegs in the axial direction. In a preferred embodiment the control unit is provided with electronic optic radar.
According the first aspect of the invention the equipment having a low-speed direct-current motor has sufficient moment for operation functions, without any cogging-effect, i.e. without moment pulses by low speed operation which are typical for applications with step motors. The friction brake provides for precise control of the barrier passive resistance up to the value of 100 Nm which can be adjusted in time and angle. The brake further provides for locking a working position by a residual magnetism due to remanence of the magnetic circuit material. The remanence of the magnetic circuit material minimizes energy consumption for a return of the bar into basic position. The equipment according the invention sensitively follows movement of persons passing by and by controlled action creates a passive resistance to illegal passing through. The construction of the equipment also offers minimal demands on energy while in stillstand.
Brief Description of the Drawings
The invention is further illustrated by way of examples presented in the accompanying drawings, where
Fig. 1 shows a principle arrangement of a drive system and
Fig. 2 presents an internal design of the drive system according Fig. 1 as shown in a sectional view in an a longitudinal direction
Description of Preferred Embodiments
Referring to Fig. 1 and Fig. 2 there is shown an equipment for access control provided with a drive system comprising a low-speed direct-current motor 1 and an electromagnetic friction brake 2, the motor 1 and the brake being in a mutually coaxial arrangement carried by a column 3. The drive system actuates a swinging barrier. Fig. 1 and Fig. 2 show only a part of the barrier which substantially has a shape of a rectangular frame 4. Usually the frame 4 carries a disk which from the in-coming side, towards approaching persons shows a white arrow in a blue field, while from the opposite side the disk shows a white stripe in a red field, which are commonly known traffic symbols of a directed way and forbidden way resp.
The shown embodiment applies a direct-current motor 1 with an outside rotor 5 and inside stator 6 mounted on a fixed shaft 7, the shaft 7 providing for an axis of the drive system. The rotor 5 seating in a first bearing 8 and a second bearing 9 is directly connected with the barrier frame 4. By means of a third bearing 10 the frame 4 is in a swing fit arranged at an extended part of the fixed shaft 7 or the column 3 as the case may be. The electromagnetic friction brake 2 has a toroidal excitation coil 13 arranged spaced apart from the direct-current motor 1 and coaxially with the outside rotor 5 of the d-c motor 1. A toroidal friction disk 12 of the electromagnetic brake 2 is positioned within the space between the rotor 5 and the excitation coil 13. The friction disk 12 is coupled with the rotor 5 of d-c motor 1 by means of three pegs 11 fixed to the body of the rotor 5. The pegs 11 are arranged coaxially with an axis of the friction disk 12 and the axis of the fixed shaft 7. The friction disk 12 is traversable along the pegs 11 in axial direction. At least two pegs 11 have to be applied, for a good transfer of a braking force just three pegs 11 are sufficient. Nevertheless even more pegs 11 can be used.
The drawings do not show the control unit. In the presented embodiment of the equipment the control unit is located in the column 3, just above the drive unit. The power supply wires both for the control and drive units are installed inside the column 3 and through the shaft 7 which is hollow. The control unit is provided with a sensor for detection of persons approaching the equipment. A preferred type of such a sensor is e.g. en electronic optic radar.
In an alternative embodiment the equipment may be provided even with a d-c motor with an inside arranged rotor. Such an inside rotor is coupled with a tube which carries the gate and simultaneously is coupled with the friction disk 12 of the electromagnetic brake 2.
The equipment is activated by a signal from the sensor. In response to the signal the electromagnetic brake 2 is demagnetized and the d-c motor 1 started. The friction brake 2 stops the rotor 5 and thus the gate movement in a predetermined position. Then the friction brake 2 power supply is switched-off, but the residual magnetism holds the gate in an open position as long as a passage of persons is detected. With no response from the sensor the gate returns to the original passage closing position, where it is again only due to the residual magnetism of the electromagnetic friction brake 2 magnetic circuit. As in the gate closed position no mechanical force is active, i.e. the gate is not coupled with any other mechanism, for opening the gate outwards from the shopping area it is necessary to overcome a friction moment between the friction disk 12 coupled with rotor 5 and the contact surface of the friction brake 2 fixed to the column 3. The friction moment is excited by an electric current flowing through the excitation coil 13 of the friction brake 2. This moment can be pre-set either by application of a magnetic material of required properties or by a value of magnetizing current of the excitation coil 13 or by both the said means. The stillstand position of the gate is secured by a remanence induction of the brake 2 magnetic circuit, thus without any further electric current consumption.
The above described equipment meets all safety regulations and simultaneously offers all function required from equipment of the kind.
The suitable direct-current motor 1 is described in the document WO 2012155868. The construction of the motor shows no moment variations irrespective to motor speed as is the case by step motors.
Industrial applications
The present invention is designed for application is shopping areas of the supermarket type.

Claims

C L A I M S
1. Equipment for access control, the equipment being provided with a gate coupled with a drive unit and a control unit, characterized in, that the drive unit is provided with coaxially arranged direct-current motor (1) and electromagnetic friction brake (2), by which the brake friction disk (12) is coupled with a rotor (5) of the direct-current motor (1).
2. Equipment for access control according to claim 1 , characterized in, that the direct-current motor (1) has an outside arranged rotor (5).
3. Equipment for access control according to claim 1 , characterized in, that the direct-current motor (1) has an inside arranged rotor (5).
4. Equipment for access control according to claim 1 or 2, characterized in, that the electromagnetic friction brake (2) is provided with a toroidal excitation coil (13) arranged coaxially with the rotor (5) of the direct-current motor (1).
5. Equipment for access control according any of the preceding claims, characterized in, that the rotor (5) of the direct-current motor (1) is coupled with the brake friction disc(12) by means of at least two pegs (11) arranged in parallel with the friction disk (12) axis, where the friction disk (12) having a shape of a toroid is traversable on the pegs in the axial direction.
5. Equipment for access control according any of the preceding claims, characterized in, that control unit is provided with electronic optic radar.
PCT/CZ2014/000037 2013-04-17 2014-04-17 Equipment for access control WO2014169886A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2013-290A CZ2013290A3 (en) 2013-04-17 2013-04-17 Device for controlling free passage of persons
CZPV2013-290 2013-04-17

Publications (1)

Publication Number Publication Date
WO2014169886A1 true WO2014169886A1 (en) 2014-10-23

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ID=50841989

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2014/000037 WO2014169886A1 (en) 2013-04-17 2014-04-17 Equipment for access control

Country Status (2)

Country Link
CZ (2) CZ2013290A3 (en)
WO (1) WO2014169886A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2604906A (en) * 2021-03-18 2022-09-21 Integrated Design Ltd An access control system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108457548A (en) * 2018-04-12 2018-08-28 广东东箭汽车科技股份有限公司 A kind of electromagnetic damper

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0423016A1 (en) * 1989-10-10 1991-04-17 Ateliers Reunis Caddie Control method and system for entrance or exit
GB2423327A (en) * 2005-02-18 2006-08-23 Tensator Ltd A gate comprising a single gatepost and two independent resiliently biased gate leaves
WO2008000360A1 (en) 2006-06-30 2008-01-03 Wanzi Metallwarenfabrik Gmbh Passage gate
EP2211014A2 (en) * 2009-01-21 2010-07-28 ECO S.r.l. High control accuracy automatic device for controlling a walkway entrance
WO2012155868A2 (en) 2011-05-17 2012-11-22 Cominfo, A.S. Direct-current electric motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0423016A1 (en) * 1989-10-10 1991-04-17 Ateliers Reunis Caddie Control method and system for entrance or exit
GB2423327A (en) * 2005-02-18 2006-08-23 Tensator Ltd A gate comprising a single gatepost and two independent resiliently biased gate leaves
WO2008000360A1 (en) 2006-06-30 2008-01-03 Wanzi Metallwarenfabrik Gmbh Passage gate
EP2211014A2 (en) * 2009-01-21 2010-07-28 ECO S.r.l. High control accuracy automatic device for controlling a walkway entrance
WO2012155868A2 (en) 2011-05-17 2012-11-22 Cominfo, A.S. Direct-current electric motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2604906A (en) * 2021-03-18 2022-09-21 Integrated Design Ltd An access control system
EP4060160A1 (en) * 2021-03-18 2022-09-21 Integrated Design Limited An access control system
US11976699B2 (en) 2021-03-18 2024-05-07 Integrated Design Limited Access control system

Also Published As

Publication number Publication date
CZ2015733A3 (en) 2015-12-30
CZ2013290A3 (en) 2014-10-29

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