EP0356403A1 - A roller blind having a stop device with a cylindrical cam - Google Patents
A roller blind having a stop device with a cylindrical cam Download PDFInfo
- Publication number
- EP0356403A1 EP0356403A1 EP89830346A EP89830346A EP0356403A1 EP 0356403 A1 EP0356403 A1 EP 0356403A1 EP 89830346 A EP89830346 A EP 89830346A EP 89830346 A EP89830346 A EP 89830346A EP 0356403 A1 EP0356403 A1 EP 0356403A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- sleeve
- blind
- stop
- fixed shaft
- 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.)
- Granted
Links
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
- E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions
Definitions
- the present invention relates to a roller blind of the type comprising: - a horizontal roller which can rotate freely about its own axis, - a blind having an upper edge fixed to the roller and a free lower edge, - a fixed shaft, - a resilient biassing device interposed between the fixed shaft and the roller, for biassing the roller towards a position in which the blind is rolled up, and - a stop device for locking the blind in any lowered position against the action of the resilient biassing device.
- the invention is more particularly concerned with the stop device and has the object of providing a device which is more functional and reliable than devices used hitherto.
- the stop device comprises: - a stop surface fast with the fixed shaft, - a sleeve which can slide and rotate on the fixed shaft and can be brought into a stop position in which one of its surfaces engages the stop surface so as to prevent the sleeve from rotating relative to the fixed shaft, - cam means for causing the sleeve to slide along the fixed shaft towards or away from the stop position, as a result of the rotation of the roller of the blind, - the cam means comprising a closed-loop track and a cam-follower member engaged therein, which are carried by the sleeve and by the roller of the blind, - the cam track being formed so that the cam-follower member is moved relative to the cam track - always moving in the same sense along it as a result of the rotations of the roller of the blind caused by the successive lowering and raising of the blind - and causes the sleeve to move into its stop position each time the blind is rolled back
- the slidable sleeve is arranged for sliding in a bush fixed to the roller and carries the cam track on its outer surface, the bush the lateral wall of the bush carrying a radial pin which projects into the bush and constitutes the cam-follower member.
- the stop surface is preferably constituted by end teeth of a stop body connected to the fixed shaft, the teeth cooperating with corresponding end teeth fixed to the sleeve.
- the sleeve is preferably mounted for rotation on a cylindrical body which is in turn mounted for sliding on the fixed shaft and prevented from rotating relative thereto.
- the cylindrical body has, on its lateral surface, a set of circumferential teeth which cooperate with a resilient tongue carried by the sleeve for restraining the sleeve against rotation during the stages in which it is not positively entrained for rotation by the roller of the blind through the cam means.
- the cylindrical body has a portion which projects from one end of the sleeve and on which a helical spring is wound with radial interference, the spring having two radial end stalks that engage opposite sides of an axial pin which projects from the end of the sleeve and, from time to time, applies to one of the two stalks a force which tends to open the spring when the sleeve is entrained in either of the two senses of rotation, so as to enable the sleeve to rotate freely relative to the cylindrical body.
- a roller blind according to the present invention is generally indicated 1.
- the blind 1 includes a horizontal roller 2 which can rotate freely about its own axis and is supported at its ends by two brackets 3 fixed to the wall by means of screws.
- a blind 4 is rolled onto the roller 2 and has an upper end (not shown in the drawings) which is fixed to the roller and a free lower end provided with a stiffening rod 5.
- the roller 2 has a hollow interior and carries within it a fixed shaft 6 (Fig. 3 ).
- the shaft 6 has a flattened end, indicated 7, which projects from the roller 2 and is supported by the bracket 3 which is on the left in Figure 1.
- a spacer tube 6a is supported on the end of the shaft 6 which faces inwardly of the roller 2 (Figs.
- helical spring 11 Fixed to the support 8 is the end of a helical spring 11 the other end of which is fixed to a larger-diameter part 12 of the shaft 6.
- helical spring 11 and the support 8 together constitute a device which constantly biasses the roller 2 towards the position in which the blind 4 is completely rolled up.
- a stop device is arranged on the shaft 6 for enabling the blind 4 to be locked in any lowered position against the biassing action of the helical spring 11.
- the device 13 includes a bush 14 situated within the roller 2 in correspondence with its end which is on the left in Figure 1.
- the bush 14 is connected for rotation with the roller 2 by means of a longitudinal groove 15 which is formed in its lateral surface and engages the longitudinal rib 9 of the roller 2.
- the end of the bush 14 which faces inwardly of the roller 2 bears against a larger-diameter part 16 of the shaft 6.
- a portion of the shaft 6 passes through the bush 14 and projects from the roller 2 for insertion, as stated, in the left-hand bracket 3.
- a sleeve 16 is arranged within the bush 14 for rotation relative thereto and is free to slide along its own axis.
- a track 17 of cam mechanism is formed in the internal surface of the sleeve 16.
- the track 17 is engaged by an entrainment pin 18 which is fixed to the lateral wall of the bush 14 and is directed radially inwardly of the bush 14.
- the end of the sleeve 16 which faces outwardly of the roller 2 is provided with saw-teeth 19.
- the teeth 19 face corresponding teeth 20 formed on the portion of a stop body 21 which faces inwardly of the roller 2.
- the body 21 is bored internally and its inner surface carries a projection 22 which is engaged in a longitudinal groove 23 formed in the shaft 6, making the body 21 fast to the shaft 6.
- a resilient ring 24 is engaged in a seat 25 on the shaft 6 and prevents axial movements of the stop body 21.
- the sleeve 16 is mounted for rotation on a hollow cylindrical body which is in turn mounted for sliding on the shaft 6.
- the body 26 carries an internal projection 27 which engages the groove 23 of the shaft 6 and prevents the body 26 from rotating relative to the shaft 6.
- the lateral surface of the body 26 has a set of circumferential teeth 30 which are snap-engaged by a resilient tongue 31 carried by the sleeve 16, for preventing the sleeve 16 from rotating relative to the shaft 6 when the sleeve 16 is not positively entrained in rotation.
- the end of the body 26 which faces outwardly of the roller 2 has a circumferential projection 28 which engages an internal abutment 29 of the sleeve 16 to prevent axial movements of the sleeve.
- a resilient ring 32 engages a seat 33 for the axial restraint of the sleeve 16.
- the cylindrical body 26 carries a helical spring 34 wound with radial intereference around its lateral surface.
- the ends of the spring 34 are bent radially towards the outside of the spring to form two stalks 35.
- the stalks 35 engage opposite sides of a pin 36 which projects axially from the sleeve 16.
- the sleeve 16 remains stationary, until the pin 18 reaches the position P2, and, at this point, if the blind 4 is lowered further, the pin 18 causes the sleeve 16 to move in the direction indicated by the arrow Z and is brought into the position indicated P3.
- the sleeve 16 is moved towards the stop body 21 by a distance a but the teeth 19 and 20 are not yet engaged.
- the pin 18 remains in the position P3 as long as the blind 4 continues to be lowered.
- the blind 4 reaches the desired position, the blind is released and is rolled back by the helical spring 11.
- the pin 18 is thus moved in the opposite direction from the arrow Y and is brought to the position P4, causing a further movement of the sleeve 16 in the direction Z by a distance b.
- the teeth 19 and 20 mesh with each other and are kept in contact by the biassing force of the helical spring 11.
- the blind 4 is lowered from the position in which it was locked. This brings the pin 18 into the position P5, moving the sleeve 16 away from the stop body 21 and disengaging the teeth 19 and 20.
- the roller 2 is free to rotate in the sense in which the blind is rolled up and the entrainment pin 18 is brought to the starting position P1.
Abstract
- a horizontal roller (2) which can rotate freely about its own axis,
- a blind (4) having an upper edge fixed to the roller (2) and a free lower edge (5),
- a fixed shaft (6),
- a resilient biassing device (11) interposed between the fixed shaft (6) and the roller (2), for biassing the roller (2) towards a position in which the blind (4) is rolled up, and
- a stop device (13) for locking the blind (4) in any lowered position against the action of the resilient biassing device (11).
Description
- The present invention relates to a roller blind of the type comprising:
- a horizontal roller which can rotate freely about its own axis,
- a blind having an upper edge fixed to the roller and a free lower edge,
- a fixed shaft,
- a resilient biassing device interposed between the fixed shaft and the roller, for biassing the roller towards a position in which the blind is rolled up, and
- a stop device for locking the blind in any lowered position against the action of the resilient biassing device. - The invention is more particularly concerned with the stop device and has the object of providing a device which is more functional and reliable than devices used hitherto.
- According to the present invention, this object is achieved by virtue of the fact that the stop device comprises:
- a stop surface fast with the fixed shaft,
- a sleeve which can slide and rotate on the fixed shaft and can be brought into a stop position in which one of its surfaces engages the stop surface so as to prevent the sleeve from rotating relative to the fixed shaft,
- cam means for causing the sleeve to slide along the fixed shaft towards or away from the stop position, as a result of the rotation of the roller of the blind,
- the cam means comprising a closed-loop track and a cam-follower member engaged therein, which are carried by the sleeve and by the roller of the blind,
- the cam track being formed so that the cam-follower member is moved relative to the cam track - always moving in the same sense along it as a result of the rotations of the roller of the blind caused by the successive lowering and raising of the blind - and causes the sleeve to move into its stop position each time the blind is rolled back by the resilient device after it has been lowered from its most raised position, and to move away from the stop position when the blind is lowered by a predetermined distance from the position in which it has been stopped. - In the preferred embodiment, the slidable sleeve is arranged for sliding in a bush fixed to the roller and carries the cam track on its outer surface, the bush the lateral wall of the bush carrying a radial pin which projects into the bush and constitutes the cam-follower member.
- The stop surface is preferably constituted by end teeth of a stop body connected to the fixed shaft, the teeth cooperating with corresponding end teeth fixed to the sleeve.
- The sleeve is preferably mounted for rotation on a cylindrical body which is in turn mounted for sliding on the fixed shaft and prevented from rotating relative thereto.
- In a first variant, the cylindrical body has, on its lateral surface, a set of circumferential teeth which cooperate with a resilient tongue carried by the sleeve for restraining the sleeve against rotation during the stages in which it is not positively entrained for rotation by the roller of the blind through the cam means.
- In a second variant, the cylindrical body has a portion which projects from one end of the sleeve and on which a helical spring is wound with radial interference, the spring having two radial end stalks that engage opposite sides of an axial pin which projects from the end of the sleeve and, from time to time, applies to one of the two stalks a force which tends to open the spring when the sleeve is entrained in either of the two senses of rotation, so as to enable the sleeve to rotate freely relative to the cylindrical body.
- By virtue of these characteristics a stop device is obtained which is characterised by particularly precise and reliable operation.
- Further characteristics and advantages of the present invention will become clear from the detailed description which follows with reference to the appended drawings, provided by way of non-limiting example, in which:
- Figure 1 is a partially-sectioned perspective view of a roller blind according to the present invention,
- Figure 2 is a section taken on the line II-II of Figure 1,
- Figure 3 is an exploded perspective view of a stop device according to the present invention,
- Figure 4 is a development in a plane of the detail indicated by the arrow IV of Figure 3,
- Figure 5 is a perspective view of the detail indicated by the arrow V of Figure 3, from a different angle,
- Figure 6 is a section taken on the line VI-VI of Figure 1,
- Figure 7 is a section of a variant corresponding to Figure 6, and
- Figure 8 is an exploded perspective view of some components according to the variant of Figure 7.
- In Figure 1, a roller blind according to the present invention is generally indicated 1.
- The blind 1 includes a
horizontal roller 2 which can rotate freely about its own axis and is supported at its ends by twobrackets 3 fixed to the wall by means of screws. A blind 4 is rolled onto theroller 2 and has an upper end (not shown in the drawings) which is fixed to the roller and a free lower end provided with astiffening rod 5. Theroller 2 has a hollow interior and carries within it a fixed shaft 6 (Fig. 3 ). Theshaft 6 has a flattened end, indicated 7, which projects from theroller 2 and is supported by thebracket 3 which is on the left in Figure 1. Aspacer tube 6a is supported on the end of theshaft 6 which faces inwardly of the roller 2 (Figs. 3 and 6), and has aterminal cross-shaped support 8 which is mounted for free rotation on thetube 6a. Alongitudinal rib 9 is formed on the inside of theroller 2 and engages one of thearms 10 of thecross-shaped support 8, making the latter fast for rotation with theroller 2. Fixed to thesupport 8 is the end of ahelical spring 11 the other end of which is fixed to a larger-diameter part 12 of theshaft 6. Thus,helical spring 11 and thesupport 8 together constitute a device which constantly biasses theroller 2 towards the position in which the blind 4 is completely rolled up. - A stop device, generally indicated 13, is arranged on the
shaft 6 for enabling the blind 4 to be locked in any lowered position against the biassing action of thehelical spring 11. Thedevice 13 includes abush 14 situated within theroller 2 in correspondence with its end which is on the left in Figure 1. Thebush 14 is connected for rotation with theroller 2 by means of alongitudinal groove 15 which is formed in its lateral surface and engages thelongitudinal rib 9 of theroller 2. The end of thebush 14 which faces inwardly of theroller 2 bears against a larger-diameter part 16 of theshaft 6. A portion of theshaft 6 passes through thebush 14 and projects from theroller 2 for insertion, as stated, in the left-hand bracket 3. Asleeve 16 is arranged within thebush 14 for rotation relative thereto and is free to slide along its own axis. Atrack 17 of cam mechanism is formed in the internal surface of thesleeve 16. Thetrack 17 is engaged by anentrainment pin 18 which is fixed to the lateral wall of thebush 14 and is directed radially inwardly of thebush 14. The end of thesleeve 16 which faces outwardly of theroller 2 is provided with saw-teeth 19. Theteeth 19 facecorresponding teeth 20 formed on the portion of astop body 21 which faces inwardly of theroller 2. Thebody 21 is bored internally and its inner surface carries a projection 22 which is engaged in alongitudinal groove 23 formed in theshaft 6, making thebody 21 fast to theshaft 6. Aresilient ring 24 is engaged in aseat 25 on theshaft 6 and prevents axial movements of thestop body 21. - The
sleeve 16 is mounted for rotation on a hollow cylindrical body which is in turn mounted for sliding on theshaft 6. Thebody 26 carries aninternal projection 27 which engages thegroove 23 of theshaft 6 and prevents thebody 26 from rotating relative to theshaft 6. The lateral surface of thebody 26 has a set ofcircumferential teeth 30 which are snap-engaged by aresilient tongue 31 carried by thesleeve 16, for preventing thesleeve 16 from rotating relative to theshaft 6 when thesleeve 16 is not positively entrained in rotation. The end of thebody 26 which faces outwardly of theroller 2 has acircumferential projection 28 which engages aninternal abutment 29 of thesleeve 16 to prevent axial movements of the sleeve. Aresilient ring 32 engages a seat 33 for the axial restraint of thesleeve 16. - In an alternative embodiment, instead of the
circumferential teeth 30, thecylindrical body 26 carries ahelical spring 34 wound with radial intereference around its lateral surface. The ends of thespring 34 are bent radially towards the outside of the spring to form twostalks 35. Thestalks 35 engage opposite sides of apin 36 which projects axially from thesleeve 16. When thesleeve 16 is entrained in rotation relative to thecylindrical body 26, thepin 36 applies a force to thestalks 35 which tends to open thespring 34, enabling thesleeve 16 to rotate freely. - The following is a description of the operation of the
stop device 13, starting from the configuration in which the blind 4 is completely rolled onto theroller 2. In this configuration, theentrainment pin 19 is in the position indicated P1 in Figure 4, relative to thetrack 17. In this configuration, the tips of theteeth 19 are at a distance c=a+b from the base of theteeth 20. When the blind 4 is lowered,theroller 2 rotates in the sense indicated by the arrow in Figure 3. Thepin 18, which is fixed to theroller 2, therefore moves relative to thetrack 17 in the sense indicated by the arrow Y of Figure 4. At first, thesleeve 16 remains stationary, until thepin 18 reaches the position P2, and, at this point, if the blind 4 is lowered further, thepin 18 causes thesleeve 16 to move in the direction indicated by the arrow Z and is brought into the position indicated P3. Thesleeve 16 is moved towards thestop body 21 by a distance a but theteeth pin 18 remains in the position P3 as long as the blind 4 continues to be lowered. When the blind 4 reaches the desired position, the blind is released and is rolled back by thehelical spring 11. Thepin 18 is thus moved in the opposite direction from the arrow Y and is brought to the position P4, causing a further movement of thesleeve 16 in the direction Z by a distance b. In this condition, theteeth helical spring 11. In order to release the blind 4 and enable it to be rolled back onto theroller 2, the blind 4 is lowered from the position in which it was locked. This brings thepin 18 into the position P5, moving thesleeve 16 away from thestop body 21 and disengaging theteeth roller 2 is free to rotate in the sense in which the blind is rolled up and theentrainment pin 18 is brought to the starting position P1. - It is clear from the above description that the operation of the stop device is precise and reliable.
Claims (6)
a horizontal roller (2) which can rotate freely about its own axis,
- a blind (4) having an upper edge fixed to the roller (2) and a free lower edge (5),
- a fixed shaft (6),
- a resilient biassing device (11) interposed between the fixed shaft (6) and the roller (2), for biassing the roller (2) towards a position in which the blind (4) is rolled up, and
- a stop device (13) for locking the blind (4) in any lowered position against the action of the resilient biassing device(11),
characterised in that the stop device (13) comprises:
- a stop surface (20) fast with the fixed shaft ( 6),
- a sleeve (16) which can slide and rotate on the fixed shaft (6) and can be brought into a stop position in which one of its surfaces (19) engages the stop surface (20) so as to prevent the sleeve (16) from rotating relative to the fixed shaft (6),
- cam means (17, 18) for causing the sleeve (16) to slide along the fixed shaft (6) towards or away from the stop position, as a result of the rotation of the roller (2) of the blind,
- the cam means (17, 18) comprising a closed-loop track (17) and a cam-follower member (18) engaged therein, which are carried by the sleeve (16) and by the roller (2) of the blind,
- the cam track (17) being formed so that the cam-follower member (18) is moved relative to the cam track (17) - always moving in the same sense along it as a result of the rotations of the roller (2) of the blind caused by the successive lowering and raising of the blind (4) - and causes the sleeve (16) to move into its stop position each time the blind (4) is rolled back by the resilient device (11) after it has been lowered from its most raised position, and to move away from the stop position when the blind (4) is lowered by a predetermined distance from the position in which it has been stopped.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT6773088 | 1988-08-01 | ||
IT67730/88A IT1223746B (en) | 1988-08-01 | 1988-08-01 | ROLLER BLIND WITH CYLINDRICAL CAM STOP DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0356403A1 true EP0356403A1 (en) | 1990-02-28 |
EP0356403B1 EP0356403B1 (en) | 1992-12-02 |
Family
ID=11304847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89830346A Expired EP0356403B1 (en) | 1988-08-01 | 1989-07-25 | A roller blind having a stop device with a cylindrical cam |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0356403B1 (en) |
DE (1) | DE68903707T2 (en) |
ES (1) | ES2036372T3 (en) |
IT (1) | IT1223746B (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0481688A1 (en) * | 1990-10-13 | 1992-04-22 | Tachikawa Corporation | Roller mechanism for roller blinds |
EP0627542A1 (en) * | 1993-06-02 | 1994-12-07 | Kabushiki Kaisha Nichibei | Roll screen apparatus |
WO1999004126A1 (en) * | 1997-07-16 | 1999-01-28 | A/S Chr. Fabers Fabriker | Winding mechanism for roller blinds |
US5890529A (en) * | 1997-01-29 | 1999-04-06 | Kirsch Inc. | Dual action retractable cord take-up reel |
EP0990764A2 (en) | 1998-09-28 | 2000-04-05 | Hunter Douglas Industries B.V. | Locking device |
WO2003071080A1 (en) * | 2002-02-19 | 2003-08-28 | Dalex S.R.L. | An operation group for curtains with winding up roll |
CZ297232B6 (en) * | 2002-09-26 | 2006-10-11 | Isotra S.R.O. | Control mechanism, in particular of roll-up shutter driving mechanism |
WO2010128872A1 (en) * | 2009-05-05 | 2010-11-11 | Franc Gardiner Spolka Z Ograniczona | Mechanism blocking the rotation of roller blinds winding roller with a spring drive, specially window blinds |
US20110209836A1 (en) * | 2010-02-26 | 2011-09-01 | Fu-Lai Yu | Window covering with improved controls |
WO2011105984A1 (en) | 2010-02-26 | 2011-09-01 | Chien Fong Huang | Window covering with improved controls |
EP1947289A3 (en) * | 2007-01-12 | 2013-04-24 | Hunter Douglas Industries Switzerland GmbH | Coupling for a winding shaft of a roller blind |
JP2018003898A (en) * | 2016-06-29 | 2018-01-11 | 下西技研工業株式会社 | Rotary damper |
CN109774433A (en) * | 2018-11-30 | 2019-05-21 | 宁波百易东和汽车部件有限公司 | A kind of double track masking device and its application method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014006268B4 (en) * | 2014-04-30 | 2022-07-07 | Lisa Dräxlmaier GmbH | roller mechanism |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB189412A (en) * | 1921-11-25 | 1923-07-06 | Alfred Coindet | Improvements in and relating to blinds |
EP0087146A1 (en) * | 1982-02-19 | 1983-08-31 | Toso Kabushiki Kaisha | Braking device for use in a roller blind |
-
1988
- 1988-08-01 IT IT67730/88A patent/IT1223746B/en active
-
1989
- 1989-07-25 DE DE8989830346T patent/DE68903707T2/en not_active Expired - Lifetime
- 1989-07-25 EP EP89830346A patent/EP0356403B1/en not_active Expired
- 1989-07-25 ES ES198989830346T patent/ES2036372T3/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB189412A (en) * | 1921-11-25 | 1923-07-06 | Alfred Coindet | Improvements in and relating to blinds |
EP0087146A1 (en) * | 1982-02-19 | 1983-08-31 | Toso Kabushiki Kaisha | Braking device for use in a roller blind |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0481688A1 (en) * | 1990-10-13 | 1992-04-22 | Tachikawa Corporation | Roller mechanism for roller blinds |
US5167269A (en) * | 1990-10-13 | 1992-12-01 | Tachikawa Corporation | Roller mechanism for roller blinds |
EP0627542A1 (en) * | 1993-06-02 | 1994-12-07 | Kabushiki Kaisha Nichibei | Roll screen apparatus |
US5566741A (en) * | 1993-06-02 | 1996-10-22 | Kabushiki Kaisha Nichibei | Roll screen apparatus |
AU680486B2 (en) * | 1993-06-02 | 1997-07-31 | Kabushiki Kaisha Nichibei | Roll screen apparatus |
US5890529A (en) * | 1997-01-29 | 1999-04-06 | Kirsch Inc. | Dual action retractable cord take-up reel |
WO1999004126A1 (en) * | 1997-07-16 | 1999-01-28 | A/S Chr. Fabers Fabriker | Winding mechanism for roller blinds |
EP0990764A2 (en) | 1998-09-28 | 2000-04-05 | Hunter Douglas Industries B.V. | Locking device |
US6131642A (en) * | 1998-09-28 | 2000-10-17 | Hunter Douglas International N.V. | Locking device |
AU747342B2 (en) * | 1998-09-28 | 2002-05-16 | Hunter Douglas Industries B.V. | Locking device |
EP0990764A3 (en) * | 1998-09-28 | 2003-05-21 | Hunter Douglas Industries B.V. | Locking device |
US7147030B2 (en) | 2002-02-19 | 2006-12-12 | Dalex S.R.L. | Operation group for curtains with winding up roll |
WO2003071080A1 (en) * | 2002-02-19 | 2003-08-28 | Dalex S.R.L. | An operation group for curtains with winding up roll |
CZ297232B6 (en) * | 2002-09-26 | 2006-10-11 | Isotra S.R.O. | Control mechanism, in particular of roll-up shutter driving mechanism |
EP1947289A3 (en) * | 2007-01-12 | 2013-04-24 | Hunter Douglas Industries Switzerland GmbH | Coupling for a winding shaft of a roller blind |
WO2010128872A1 (en) * | 2009-05-05 | 2010-11-11 | Franc Gardiner Spolka Z Ograniczona | Mechanism blocking the rotation of roller blinds winding roller with a spring drive, specially window blinds |
US20110209836A1 (en) * | 2010-02-26 | 2011-09-01 | Fu-Lai Yu | Window covering with improved controls |
WO2011105984A1 (en) | 2010-02-26 | 2011-09-01 | Chien Fong Huang | Window covering with improved controls |
EP2539526A1 (en) * | 2010-02-26 | 2013-01-02 | Huang, Chien Fong | Window covering with improved controls |
JP2013520592A (en) * | 2010-02-26 | 2013-06-06 | チエン フォン ファン、 | Window covering with improved control |
EP2539526A4 (en) * | 2010-02-26 | 2013-09-18 | Teh Yor Co Ltd | Window covering with improved controls |
US8746320B2 (en) * | 2010-02-26 | 2014-06-10 | Teh Yor Co., Ltd. | Window covering with improved controls |
JP2018003898A (en) * | 2016-06-29 | 2018-01-11 | 下西技研工業株式会社 | Rotary damper |
CN109774433A (en) * | 2018-11-30 | 2019-05-21 | 宁波百易东和汽车部件有限公司 | A kind of double track masking device and its application method |
CN109774433B (en) * | 2018-11-30 | 2021-04-09 | 宁波百易东和汽车部件有限公司 | Double-track shielding device and application method thereof |
Also Published As
Publication number | Publication date |
---|---|
DE68903707T2 (en) | 1993-04-01 |
IT1223746B (en) | 1990-09-29 |
ES2036372T3 (en) | 1993-05-16 |
EP0356403B1 (en) | 1992-12-02 |
DE68903707D1 (en) | 1993-01-14 |
IT8867730A0 (en) | 1988-08-01 |
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