US3838477A - Door-closing mechanism - Google Patents

Door-closing mechanism Download PDF

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Publication number
US3838477A
US3838477A US00321035A US32103573A US3838477A US 3838477 A US3838477 A US 3838477A US 00321035 A US00321035 A US 00321035A US 32103573 A US32103573 A US 32103573A US 3838477 A US3838477 A US 3838477A
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United States
Prior art keywords
block
door
cam
box casing
spring means
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Expired - Lifetime
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US00321035A
Inventor
M Evans
D Tomlinson
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James Gibbons Ltd
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James Gibbons Ltd
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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
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/104—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with cam-and-slide transmission between driving shaft and piston within the closer housing
    • 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
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/227—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the top of wings, e.g. details related to closer housings, covers, end caps or rails therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • a door closer suitable for fitting in the transom, has a pintle carrying cams with cam surfaces for stressing the return spring and setting the door check as the door is opened, the return spring and the check having separate cam followers disposed on opposite sides of the cam, the followers being connected by springs so as to be always held in contact with their respective cam surfaces.
  • This invention relates to door-closing mechanisms of the class comprising a return spring or springs arranged to be stressed during opening of the door and to cause door closure, and a fluid check which is effective to limit the rate of door closure under the action of the return spring or springs.
  • the invention is particularly, though not exclusively, concerned to provide a construction of such mechanism suitable for mounting above a door, in the transom or lintel, instead of in the floor which is more usual.
  • the mechanism of the invention may be floor-fitted.
  • the door-closing mechanism of the class above referred to is housed in a box casing with a pintle journalled in the box casing to engage and turn with a door, the pintle carrying a cam which in door-opening rotation stresses the spring and prepares the check for action through respective cam followers slidable in the box and resiliently interconnected to be urged against opposite sides of the cam.
  • This arrangement as compared with arrangements in which stressing of closure spring and setting of the check action are operated by a single cam-actuated bridle, enables the cam to have separate and distinct profiles governing closure spring stressing and check actuation and allows the followers to maintain contact with both sides of the cam throughout turning.
  • FIG. 1 is a plan view with parts of the box omitted.
  • FIG. 2 is a section on the line 2-2 of FIG. 1.
  • the door-closing mechanism as shown is designed for mounting in a transom or lintel above a door, but can be floor-fitted, and is housed in a box casing with attachable cover plates 11 which will face the door.
  • the casing and cover plates carry needle roller bearings 12 for a pintle 13 which has a squared end 13a for engagement with the door so that these turn together.
  • the pintle 13 has in one with it axially-spaced identical earns 14 which are roughly heart-shaped.
  • the box casing 10 has mounted in it by means of end plates 16 a pair of parallel guide rods 17 which extend the full length of the box casing.
  • the casing 10 at about its mid length has secured to it a transversely-extending bridge block 18 and, to one side of this and below the cams 14, a bearing plate 19.
  • closure springs 20 each of which bears by one end in a recess 18a in the bridge block 18 and by its other end against a capstan nut 21.
  • the capstan nuts 21 are threaded on adjacent ends of respective compression tubes 22 which slide on the guide rods 17 and in bearings in the bridge block 18 and which have their opposite ends secured in a bridle block 23.
  • This block 23 is slidable on the guide rods 17 and located between the earns 14 and carries two pairs of rollers 24 which in use run on the earns 14 to one side of the pintle 13.
  • the door check is centrally between the springs 20 and comprises a piston 25 working in cylinder 26 filled with oil.
  • the check is adjustably mounted in the box casing 10 by a threaded tail on the cylinder engaging a threaded bush 27 mounted in one end plate 16.
  • the piston rod 250 has its end secured in a slide block 28 'which is mounted in the bridge block 18 and which carries a pair of rollers 29 to run on the cams 14 at the side of the pintle l3 remote from the rollers 24.
  • the bridle block 23, rollers 24, the slide block 28 and rollers 29 constitute the cam follower arrangement and, to ensure that the rollers 24 and 29 maintain contact with the earns 14 at all times, the blocks 23, 28 are interconnected by tension springs 30 which draw the blocks 23, 28 towards one another.
  • tension springs 30 which draw the blocks 23, 28 towards one another.
  • the bridle block 23 On rotation of the pintle from the position shown in FIG. 1, the bridle block 23 is moved along the guide rods 17 to compress the springs 20 and, at the same time, due to the effect of the springs 30 the rollers 29 are constrained to run down the earns 14 away from their peaks, so that the piston 25 is moved to the left, the fluid in the cylinder passing freely through valve controlled passages 31 in the piston.
  • a door-closing mechanism comprising a box casing; a pintle journalled in said box casing adjacent one end thereof and adapted to engage and turn with the door; cam means carried by the pintle so as to turn therewith; return spring means comprising compression coil spring means, a bridge block fixed in said box casing adjacent the cam means on the side thereof remote from said one end of the box casing, said block forming a fixed abutment for the coil spring means, movable abutment means for the coil spring means, said movable abutment means being disposed adjacent the other end of the box casing and being movable towards and away from the cam means, and a cam follower connected to move with the movable abutment means and comprising a first block slidable in the box casing between the cam means and said one end of the box casing and first rollers mounted on the first block contacting the cam means; a fluid check within the casing adjacent the coil spring means and including a second block mounted to slide in the bridge block towards and away from

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  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

A door closer, suitable for fitting in the transom, has a pintle carrying cams with cam surfaces for stressing the return spring and setting the door check as the door is opened, the return spring and the check having separate cam followers disposed on opposite sides of the cam, the followers being connected by springs so as to be always held in contact with their respective cam surfaces.

Description

United States Patent 1 1 Evans et al.
1 DOOR-CLOSING MECHANISM [75] Inventors: Melvyn Harold Evans, Wombourne;
' Douglas Eric Tomlinson, Codsall,
both of England [73] Assignee: James Gibbons Limited,
Wolverhampton, England 22 Filed: Jan. 4, 1973 21 Appl.No.:321,035
'[30] Foreign Application Priority Data .Ian. 6, 1972 Great Britain 625/72 [52] US. Cl. 16/55 [51] Int. Cl E05f 3/00 [58] Field of Search 16/49,-51, 52, 53, 55,
16/57, 58, 59, 60, 61, DIG. 9, DIG. 10, 56
[56] References Cited UNITED STATES PATENTS 2,890,474 6/1959 Ferguson 16/55 Oct. 1, 1974 10/1969 Mittig et a1. 16/55 4/1970 Wharton 16/55 FOREIGN PATENTS OR APPLICATIONS 536,107 5 1941 GreatBrit-ain 16/55 1,068,586 11/1959 Germany 16/51 Primary ExaminerPaul R. Gilliam Assistant Examiner-William E. Lyddane Attorney, Agent, or Firm-Larson, Taylor & Hinds [5 7 ABSTRACT A door closer, suitable for fitting in the transom, has a pintle carrying cams with cam surfaces for stressing the return spring and setting the door check as the door is opened, the return spring and the check having separate cam followers disposed on opposite sides of the cam, the followers being connected by springs so as to be always held in contact with their respective cam surfaces.
' 1 Claim, 2 Drawing Figures DOOR-CLOSING MECHANISM This invention relates to door-closing mechanisms of the class comprising a return spring or springs arranged to be stressed during opening of the door and to cause door closure, and a fluid check which is effective to limit the rate of door closure under the action of the return spring or springs.
The invention is particularly, though not exclusively, concerned to provide a construction of such mechanism suitable for mounting above a door, in the transom or lintel, instead of in the floor which is more usual. However the mechanism of the invention may be floor-fitted.
According to this invention, the door-closing mechanism of the class above referred to is housed in a box casing with a pintle journalled in the box casing to engage and turn with a door, the pintle carrying a cam which in door-opening rotation stresses the spring and prepares the check for action through respective cam followers slidable in the box and resiliently interconnected to be urged against opposite sides of the cam.
This arrangement, as compared with arrangements in which stressing of closure spring and setting of the check action are operated by a single cam-actuated bridle, enables the cam to have separate and distinct profiles governing closure spring stressing and check actuation and allows the followers to maintain contact with both sides of the cam throughout turning.
The accompanying drawings illustrate by way of example one form of door-closing mechanism and in the drawings:
FIG. 1 is a plan view with parts of the box omitted, and
FIG. 2 is a section on the line 2-2 of FIG. 1.
The door-closing mechanism as shown is designed for mounting in a transom or lintel above a door, but can be floor-fitted, and is housed in a box casing with attachable cover plates 11 which will face the door.
The casing and cover plates carry needle roller bearings 12 for a pintle 13 which has a squared end 13a for engagement with the door so that these turn together. The pintle 13 has in one with it axially-spaced identical earns 14 which are roughly heart-shaped.
The box casing 10 has mounted in it by means of end plates 16 a pair of parallel guide rods 17 which extend the full length of the box casing. The casing 10 at about its mid length has secured to it a transversely-extending bridge block 18 and, to one side of this and below the cams 14, a bearing plate 19.
There are two closure springs 20 each of which bears by one end in a recess 18a in the bridge block 18 and by its other end against a capstan nut 21. The capstan nuts 21 are threaded on adjacent ends of respective compression tubes 22 which slide on the guide rods 17 and in bearings in the bridge block 18 and which have their opposite ends secured in a bridle block 23. This block 23 is slidable on the guide rods 17 and located between the earns 14 and carries two pairs of rollers 24 which in use run on the earns 14 to one side of the pintle 13.
The door check is centrally between the springs 20 and comprises a piston 25 working in cylinder 26 filled with oil. The check is adjustably mounted in the box casing 10 by a threaded tail on the cylinder engaging a threaded bush 27 mounted in one end plate 16. The piston rod 250 has its end secured in a slide block 28 'which is mounted in the bridge block 18 and which carries a pair of rollers 29 to run on the cams 14 at the side of the pintle l3 remote from the rollers 24.
The bridle block 23, rollers 24, the slide block 28 and rollers 29 constitute the cam follower arrangement and, to ensure that the rollers 24 and 29 maintain contact with the earns 14 at all times, the blocks 23, 28 are interconnected by tension springs 30 which draw the blocks 23, 28 towards one another. Thus the ranges of movement of the two blocks 23, 28 can be different and appropriate for compressing the springs 20 and for preparing the fluid check for limiting the rate of door closure respectively whilst maintaining contact with the cams.
On rotation of the pintle from the position shown in FIG. 1, the bridle block 23 is moved along the guide rods 17 to compress the springs 20 and, at the same time, due to the effect of the springs 30 the rollers 29 are constrained to run down the earns 14 away from their peaks, so that the piston 25 is moved to the left, the fluid in the cylinder passing freely through valve controlled passages 31 in the piston.
When the pintle is released to allow the associated door to close, the closure springs 20 acting through the bridle block 23, rollers 24 and earns 14 cause the pintle and door to turn back to the initial position so forcing the slide block 28 and the piston 25 to the right, this movement being at a rate dependent on the restricted fluid flow past the piston 25.
We claim:
1. A door-closing mechanism comprising a box casing; a pintle journalled in said box casing adjacent one end thereof and adapted to engage and turn with the door; cam means carried by the pintle so as to turn therewith; return spring means comprising compression coil spring means, a bridge block fixed in said box casing adjacent the cam means on the side thereof remote from said one end of the box casing, said block forming a fixed abutment for the coil spring means, movable abutment means for the coil spring means, said movable abutment means being disposed adjacent the other end of the box casing and being movable towards and away from the cam means, and a cam follower connected to move with the movable abutment means and comprising a first block slidable in the box casing between the cam means and said one end of the box casing and first rollers mounted on the first block contacting the cam means; a fluid check within the casing adjacent the coil spring means and including a second block mounted to slide in the bridge block towards and away from the cam means and second rollers mounted on the said second block and contacting the cam means on the side thereof remote from said first rollers; and tension spring means interconnecting said slidable blocks and urging them towards the cam means; said cam means, upon rotation during door opening, moving said first block towards said one end of the box casing thereby compressing said coil spring means and increasing the tension in said tension spring means so as to move the said second block and prepare the fluid check for door closing operation.

Claims (1)

1. A door-closing mechanism comprising a box casing; a pintle journalled in said box casing adjacent one end thereof and adapted to engage and turn with the door; cam means carried by the pintle so as to turn therewith; return spring means comprising compression coil spring means, a bridge block fixed in said box casing adjacent the cam means on the side thereof remote from said one end of the box casing, said block forming a fixed abutment for the coil spring means, movable abutment means for the coil spring means, said movable abutment means being disposed adjacent the other end of the box casing and being movable towards and away from the cam means, and a cam follower connected to move with the movable abutment means and comprising a first block slidable in the box casing between the cam means and said one end of the box casing and first rollers mounted on the first block contacting the cam means; a fluid check within the casing adjacent the coil spring means and including a second block mounted to slide in the bridge block towards and away from the cam means and second rollers mounted on the said second block and contacting the cam means on the side thereof remote from said first rollers; and tension spring means interconnecting said slidable blocks and urging them towards the cam means; said cam means, upon rotation during door opening, moving said first block towards said one end of the box casing thereby compressing said coil spring means and increasing the tension in said tension spring means so as to move the said second block and prepare the fluid check for door closing operation.
US00321035A 1972-01-06 1973-01-04 Door-closing mechanism Expired - Lifetime US3838477A (en)

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Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504699A (en) * 1994-04-08 1996-04-02 Goller; Stuart E. Nonvolatile magnetic analog memory
WO1996026343A1 (en) * 1995-02-22 1996-08-29 Dorma Gmbh + Co. Kg Door closer
US20030135953A1 (en) * 2002-01-22 2003-07-24 Kwangju Institute Of Science And Technology Magnetic type floor hinge
US20060021189A1 (en) * 2004-07-30 2006-02-02 Johnson Loring M Door closer
US20080127562A1 (en) * 2004-12-17 2008-06-05 Dorma Gmbh + Co. Kg Door Drive, in Particular for a Revolving Door
CN100404887C (en) * 2006-04-10 2008-07-23 郑林智 Longitudinal repulsion strong magnetic turn-over bed hinge
US20090093913A1 (en) * 2007-04-24 2009-04-09 Copeland Ii David James Door closer assembly
US8109038B2 (en) 2004-06-30 2012-02-07 Yale Security Inc. Door operator
US20120117755A1 (en) * 2009-07-24 2012-05-17 Dorma Gmbh + Co. Kg Door Closer
WO2012095092A1 (en) * 2011-01-14 2012-07-19 Dorma Gmbh + Co. Kg Revolving door actuator
WO2012095094A1 (en) * 2011-01-14 2012-07-19 Dorma Gmbh + Co. Kg Attachment for revolving door actuator
WO2012095091A1 (en) * 2011-01-14 2012-07-19 Dorma Gmbh + Co. Kg Revolving door actuator
WO2012095096A3 (en) * 2011-01-14 2012-10-04 Dorma Gmbh + Co. Kg Under lintel-mounted operator for single-acting door, operator attachment for single acting door and operator for single-acting door
WO2012146221A1 (en) * 2011-01-14 2012-11-01 Dorma Gmbh + Co. Kg Revolving door actuator
US8415902B2 (en) 2010-04-16 2013-04-09 Yale Security Inc. Door closer with calibration mode
US20130097805A1 (en) * 2009-09-24 2013-04-25 Ingersoll Rand Security Technologies Limited Door closer
US8527101B2 (en) 2010-04-16 2013-09-03 Yale Security Inc. Door closer assembly
US8547046B2 (en) 2010-04-16 2013-10-01 Yale Security Inc. Door closer with self-powered control unit
US8564235B2 (en) 2010-04-16 2013-10-22 Yale Security Inc. Self-adjusting door closer
US8773237B2 (en) 2010-04-16 2014-07-08 Yale Security Inc. Door closer with teach mode
US8779713B2 (en) 2010-04-16 2014-07-15 Yale Security Inc. Door closer with dynamically adjustable latch region parameters
US20150128379A1 (en) * 2013-11-13 2015-05-14 Dorma Deutschland Gmbh Overhead door closer
US9163446B2 (en) 2010-03-17 2015-10-20 Yale Security Inc. Door control apparatus
US20150345202A1 (en) * 2013-03-04 2015-12-03 Ryobi Ltd. Door closer
US9903146B2 (en) * 2014-02-13 2018-02-27 Hettich-Oni Gmbh & Co. Kg Bearing arrangement for a door
US20180334845A1 (en) * 2005-04-13 2018-11-22 ASSA ABLOY Accessories and Door Controls Group, Inc. Door operator assembly
RU2762657C2 (en) * 2017-07-03 2021-12-21 ХЕТТИХ-ОНИ ГмбХ унд Ко. КГ Damping assembly and fittings of the leaf
US11242705B2 (en) * 2019-01-16 2022-02-08 Dormakaba Deutschland Gmbh Door actuator
US11505978B2 (en) * 2018-10-15 2022-11-22 Ol.Mi S.R.L. Hinge for the controlled rotary movement of a door, a door leaf or similar

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2608671A1 (en) * 1976-03-03 1977-09-08 Dorma Baubeschlag AUTOMATIC DOOR CLOSER
DE4041824C1 (en) * 1990-12-24 1992-06-11 Dorma Gmbh + Co. Kg, 5828 Ennepetal, De

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GB536107A (en) * 1939-11-24 1941-05-02 George William Groom Improvements in floor door springs and checking appliances
US2890474A (en) * 1954-11-18 1959-06-16 Stanley Works Hydraulic door check
DE1068586B (en) * 1959-11-05 AiMii., zugl Closer for the leaves of doors
US3474485A (en) * 1966-09-24 1969-10-28 Zavody Umelecke Kovovyroby Np Automatic universal door closer
US3507001A (en) * 1967-04-12 1970-04-21 James Gibbons Ltd Door closing springs and checks

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Publication number Priority date Publication date Assignee Title
DE1068586B (en) * 1959-11-05 AiMii., zugl Closer for the leaves of doors
GB536107A (en) * 1939-11-24 1941-05-02 George William Groom Improvements in floor door springs and checking appliances
US2890474A (en) * 1954-11-18 1959-06-16 Stanley Works Hydraulic door check
US3474485A (en) * 1966-09-24 1969-10-28 Zavody Umelecke Kovovyroby Np Automatic universal door closer
US3507001A (en) * 1967-04-12 1970-04-21 James Gibbons Ltd Door closing springs and checks

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504699A (en) * 1994-04-08 1996-04-02 Goller; Stuart E. Nonvolatile magnetic analog memory
WO1996026343A1 (en) * 1995-02-22 1996-08-29 Dorma Gmbh + Co. Kg Door closer
DE19506220A1 (en) * 1995-02-22 1996-08-29 Dorma Gmbh & Co Kg Door closer
US5802670A (en) * 1995-02-22 1998-09-08 Dorma Gmbh +Co. Kg Door closer
US20030135953A1 (en) * 2002-01-22 2003-07-24 Kwangju Institute Of Science And Technology Magnetic type floor hinge
US6823561B2 (en) * 2002-01-22 2004-11-30 Kwangju Institute Of Science And Technology Magnetic type floor hinge
US8499495B2 (en) 2004-06-30 2013-08-06 Yale Security Inc. Door operator
US8109038B2 (en) 2004-06-30 2012-02-07 Yale Security Inc. Door operator
US20060021189A1 (en) * 2004-07-30 2006-02-02 Johnson Loring M Door closer
US20080127562A1 (en) * 2004-12-17 2008-06-05 Dorma Gmbh + Co. Kg Door Drive, in Particular for a Revolving Door
US10968677B2 (en) * 2005-04-13 2021-04-06 ASSA ABLOY Accessories and Door Controls Group, Inc. Door operator assembly
US20180334845A1 (en) * 2005-04-13 2018-11-22 ASSA ABLOY Accessories and Door Controls Group, Inc. Door operator assembly
CN100404887C (en) * 2006-04-10 2008-07-23 郑林智 Longitudinal repulsion strong magnetic turn-over bed hinge
US7971316B2 (en) 2007-04-24 2011-07-05 Yale Security Inc. Door closer assembly
US9399884B2 (en) 2007-04-24 2016-07-26 Yale Security Inc. Door closer assembly
US20090093913A1 (en) * 2007-04-24 2009-04-09 Copeland Ii David James Door closer assembly
US8600567B2 (en) 2007-04-24 2013-12-03 Yale Security Inc. Door closer assembly
US20120117755A1 (en) * 2009-07-24 2012-05-17 Dorma Gmbh + Co. Kg Door Closer
JP2013500409A (en) * 2009-07-24 2013-01-07 ドルマ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト Door closer
US8910345B2 (en) * 2009-09-24 2014-12-16 Ingersoll Rand Security Technologies Limited Door closer
US20130097805A1 (en) * 2009-09-24 2013-04-25 Ingersoll Rand Security Technologies Limited Door closer
US9163446B2 (en) 2010-03-17 2015-10-20 Yale Security Inc. Door control apparatus
US8564235B2 (en) 2010-04-16 2013-10-22 Yale Security Inc. Self-adjusting door closer
US8415902B2 (en) 2010-04-16 2013-04-09 Yale Security Inc. Door closer with calibration mode
US8527101B2 (en) 2010-04-16 2013-09-03 Yale Security Inc. Door closer assembly
US9523230B2 (en) 2010-04-16 2016-12-20 Yale Security Inc. Door closer assembly
US8779713B2 (en) 2010-04-16 2014-07-15 Yale Security Inc. Door closer with dynamically adjustable latch region parameters
US8547046B2 (en) 2010-04-16 2013-10-01 Yale Security Inc. Door closer with self-powered control unit
US8773237B2 (en) 2010-04-16 2014-07-08 Yale Security Inc. Door closer with teach mode
CN103328751A (en) * 2011-01-14 2013-09-25 多玛两合有限公司 Under lintel-mounted operator for single-acting door, operator attachment for single acting door and operator for single-acting door
WO2012095094A1 (en) * 2011-01-14 2012-07-19 Dorma Gmbh + Co. Kg Attachment for revolving door actuator
CN103339335A (en) * 2011-01-14 2013-10-02 多玛两合有限公司 Revolving door actuator
CN103328752A (en) * 2011-01-14 2013-09-25 多玛两合有限公司 Revolving door actuator
WO2012095096A3 (en) * 2011-01-14 2012-10-04 Dorma Gmbh + Co. Kg Under lintel-mounted operator for single-acting door, operator attachment for single acting door and operator for single-acting door
WO2012095092A1 (en) * 2011-01-14 2012-07-19 Dorma Gmbh + Co. Kg Revolving door actuator
CN103299015A (en) * 2011-01-14 2013-09-11 多玛两合有限公司 Attachment for revolving door actuator
CN103328751B (en) * 2011-01-14 2015-10-21 多玛两合有限公司 Single action door operators, single action door operators attachment and single action door operators below lintel
WO2012146221A1 (en) * 2011-01-14 2012-11-01 Dorma Gmbh + Co. Kg Revolving door actuator
WO2012095091A1 (en) * 2011-01-14 2012-07-19 Dorma Gmbh + Co. Kg Revolving door actuator
CN103299016A (en) * 2011-01-14 2013-09-11 多玛两合有限公司 Revolving door actuator
US9416578B2 (en) * 2013-03-04 2016-08-16 Ryobi Ltd. Door closer
US20150345202A1 (en) * 2013-03-04 2015-12-03 Ryobi Ltd. Door closer
US20150128379A1 (en) * 2013-11-13 2015-05-14 Dorma Deutschland Gmbh Overhead door closer
US9903146B2 (en) * 2014-02-13 2018-02-27 Hettich-Oni Gmbh & Co. Kg Bearing arrangement for a door
RU2762657C2 (en) * 2017-07-03 2021-12-21 ХЕТТИХ-ОНИ ГмбХ унд Ко. КГ Damping assembly and fittings of the leaf
US11505978B2 (en) * 2018-10-15 2022-11-22 Ol.Mi S.R.L. Hinge for the controlled rotary movement of a door, a door leaf or similar
US11242705B2 (en) * 2019-01-16 2022-02-08 Dormakaba Deutschland Gmbh Door actuator

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CA967598A (en) 1975-05-13
AU5079273A (en) 1974-07-11
AU469247B2 (en) 1976-02-05
GB1344945A (en) 1974-01-23

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