CA2158702A1 - Cassette blind with brake coupling - Google Patents
Cassette blind with brake couplingInfo
- Publication number
- CA2158702A1 CA2158702A1 CA002158702A CA2158702A CA2158702A1 CA 2158702 A1 CA2158702 A1 CA 2158702A1 CA 002158702 A CA002158702 A CA 002158702A CA 2158702 A CA2158702 A CA 2158702A CA 2158702 A1 CA2158702 A1 CA 2158702A1
- Authority
- CA
- Canada
- Prior art keywords
- winding shaft
- winding
- cassette
- pin
- blind
- 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.)
- Abandoned
Links
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
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/40—Roller blinds
- E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
-
- 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
- E06B9/68—Operating devices or mechanisms, e.g. with electric drive
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Blinds (AREA)
Abstract
The present invention pertains to a cassette blind with a weighting profile at the lower end of a set of blinds and with a blind drive, in which coupling elements with a winding shaft mounted in the cassette profile, complementary coupling elements with a drive member and complementary coupling elements at a pin which can be stationarily fastened are arranged, wherein coupling elements of the drive member and of the winding shaft mutually engage each other during a rotary movement of the drive member in the winding-up direction of the blinds, and coupling elements of the winding shaft and of the pin mutually engage each other in the opposite direction. The coupling elements at the winding shaft are arranged rotatably over a predetermined angle against spring action in the winding-up direction of the blinds in order to achieve a torsionally elastic tensioning of the weighting profile at the cassette profile at the end of the winding-up movement of the blinds.
Description
21~7~2 Docket # 45,970 CASSETTE BLIND WITH BRAKE COUPLING
FIELD OF THE INVENTION
The present invention pertains to a cassette blind with a winding shaft that is connected by coupling elements to a stationary pin and to a S drive member, where the coupling elements to the drive member engage in a winding up direction of the blind, and the coupling element connected to the stationary pin engage in an unwinding direction of the blind. In particular the present invention relates to such a blind where the winding shaft is prevented from unrolling at the end of the winding up.
BACKGROUND OF THE INVENTION
A cassette blind is known from DE 42 39 507-A1 and the corresponding U.S. Patent 5,443,109. This document describes friction 21587~2 disks, which are alternately fixed with teeth in axial grooves on the outer circumference of a stationarily anchored pin and in axial grooves on the inner circumference of a tubular housing which can be coupled with the drive member in the direction of rotation, and which can be pressed against 5 each other by axial forces with an axial displacement. To achieve this, one of two end disks which are axially displaceable on the pin are tensioned by a torque spring in the direction of rotation within a predetermined angle of rotation, and the other end disk is only axially displaceable. Relatively strong coupling or braking forces are initiated due to the relatively weak 10 torque spring, so that such a drive runs smoothly and is especially suitable for high blind weights. The problem arises in such and similar cassette blinds that even though the weighting profile arranged at the lower edge of the set of blinds can be pulled against the cassette profile of the cassette accommodating the winding shaft and the blind wound up on it when the 15 blinds are being pulled up, it drops back somewhat after the driving forces are eliminated, so that a narrow strip of the set of blinds again becomes visible between the weighting profile and the cassette profile. This is frequently undesirable, because it compromises the appearance of the pulled-up cassette-type blind.
SUMMARY AND OBJECTS OF THE INVENTION
The object of the present invention is therefore to design the drive means of the blind such that the weighting profile no longer drops back after the blind has been pulled up.
The present invention includes a winding shaft which is connected 21~8~ 02 to a stationary pin by a pin coupling means, and to a drive member by a drive coupling means. The drive coupling means engages the drive member to the winding shaft during rotary movement of the drive means in a winding up direction, and the pin coupling means engages the winding 5 shaft to the stationary pin during an unwinding direction. The coupling elements are arranged on the winding shaft rotatably over a predetermined angle against the action of the spring in the winding-up direction of the blinds.
It is achieved due to this design that the drive member can still be 10 rotated further additionally by a predetermined angle against the action of the spring at the end of the winding-up movement, when the weighting profile has already come into contact with the cassette profile. When the driving force applied manually or by a motor ceases to act, the weighting profile is held by the force of the spring against the cassette profile, so that 15 the elements of the now active brake coupling are movable within the predetermined angle of rotation for mutual engagement. The spring counteracts the weight of the blinds and can be designed as a relatively weak spring, so that the weight of the blinds pulls the coupling elements attached to the winding shaft into one stop position. The spring comes into 20 action only at the end of the winding-up movement of the blinds, so that it pulls the coupling elements into the other stop position of the predetermined angle of rotation, so that the coupling elements are rotatable in relation to one another within the predetermined angle when the weighting profile is already in contact with the cassette profile.
2158~
The angle of rotation of the winding shaft in relation to the coupling elements associated with it, is greater than the switching angle necessary for the engagement of the coupling elements acting between the winding shaft and the pin. Preferably the coupling elements include inner and outer S sleeves which are mounted concentrically one inside the other and are rotatable with respect to one another. These inner and outer sleeves are tensioned by the torsion spring against the direction of rotation of the drive member during the winding-up of the blinds. The inner and outer sleeves are provided on the winding shaft. The outer sleeve is non-rotatably 10 connected to the winding shaft, and the inner sleeve is connected rotatably between stops to the driving member. Coupling elements between the pin and the winding shaft include first and second brake disks which are alternating connected non-rotatably to the pin and to the winding shaft.
A cam means axially biases the first and second sets of brake disks against 15 each other.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is 20 made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
Figure 1 is a perspective view of a cassette blind, .
Figure 2 is a cross section through the cassette profile of the pulled-up blinds, Figure 3 is a cross section corresponding to Figure 2 according to a design according to the state of the art, Figure 4 is a longitudinal section through the drive-side end of the winding shaft in an axial plane, Figure S is a cross section along line V-V in Figure 4, and Figure 6 is a cross section along line VI-VI in Figure 4.
DETAILED DESCRIPTION OF THE PREFERRED
EMBODIMENT
Referring to the drawings and in particular to Figure 1, the exemplary embodiment shows a cassette blind, in which a set of blinds 1 includes a weighting profile 2 attached to the lower edge of which. The blind 1 can be wound up within a cassette profile 3 on a winding shaft 4 15 mounted therein.
Most often drive members are used which are arranged on one end within the winding shaft 4 and are actuated by a drive chain 5 led out of the cassette profile 3 on the side next to the blinds 1, are used for this purpose. It is also possible to have a motor-type drive means Cassette 20 blinds according to the present invention differ from roller blinds in that the blinds 1 are wound up on the winding shaft 4 by driving forces rather than by a torsion spring tensioned during the pulling down of the blinds.
The present invention includes a drive member 6 which can be rotated by the drive chain 5. On the one hand, coupling members, which 21~i87~2 make possible a non-rotatable connection between the drive member 6 and the winding shaft 4 for pulling up the blinds 1, are provided between the drive member 6 and the winding shaft 4. On the other hand, braking members, by which the winding shaft 4 is stopped as soon as driving forces S in the direction of winding up cease to act on the drive member 6, are provided between the winding shaft 4 and a stationarily anchored pin 7.
In the exemplary embodiment, the drive member 6 is mounted movably concentrically within a tubular housing 8, with its angle of rotation limited by stops. The angle of rotation is limited by stops 9 on the inner 10 jacket of the tubular winding shaft 4 and by stops 10 on the outer jacket of the housing 8. Brake disks 11 and 12, which are alternately connected non-rotatably to the pin 7 and non-rotatably to the tubular housing 8, are arranged axially displaceably on the pin 7. The assembly consisting of the brake disks 11 and 12 is supported at one end by an abutment 13 arranged 15 rigidly on the pin 7. The end disk 14 at the opposite end has an axial cam, which cooperates with an axial cam at an intermediate member 15 such that the assembly consisting of the brake disks 11 and 12 is released during a rotary movement of the drive member 6 in the winding-up direction of the blinds 1 and compressed by the axial cams at the beginning of a rotary 20 movement in the opposite direction.
A coupling member 16, which is non-rotatably connected to the housing 8, is connected movably over an angle of rotation against a torsion spring 17 to a sleeve 18, which is connected to the winding shaft 4 axially movably but non-rotatably. The outer sleeve 18 is non-rotatably connected 213~70~
to the said winding shaft 4, and the inner sleeve 16 is connected rotatably between stops to the drive member 6.
Pin-like radial projections of the sleeve 18 engage profiled grooves of the stops 9 on the inner circumference of the tubular winding shaft 4.
S One end of the torsion spring 17 is attached to the coupling element 16, and the other end of the torsion spring 17 is attached to the sleeve 18. The torsion spring 17 is tensioned during a rotary movement of the drive member 6 in the winding-up direction of the blinds 1.
The weight of the blinds overcomes the maximum spring tension, so 10 that the tubular housing 8 and the tubular winding shaft 4 reach a stop position defined by the stops 9 and 10. The torsion spring 17 begins to act at the top end of the rolling-up movement of the blinds 1 such that it rotates the winding shaft 4 in a leading manner, so that the drive member 6 is still able to rotate further when the weighting strip has already 15 occupied the position shown in Figure 2 and is in contact with the cassette profile 3, as a result of which the further rotary movement of the winding shaft 4 is blocked. To avoid overstretching of the torsion spring 17, the possibility of further rotation ls limited by the stops 9 and 10 between the winding shaft 4 and the housing 8. In order for the assembly consisting of 20 the brake disks 11 and 12 to exert its braking effect, a slight backward rotation of the drive member 6 is possible. This rotation now takes place within the spring tension, so that the weighting profile 2 cannot drop back into the undesired position shown in Figure 3. The value of the angle limited by the stops 9 and 10 should be greater than the angle of rotation 2 1 3 8 7 ~ 2 necessary for the engagement of the braking elements, so that the weighting profile 2 is held against the cassette profile 3 in the position shown in Figure 2 with a slight spring tension. The coupling element 16 non-rotatably connected to the tubular housing 8 is also designed in the 5 exemplary embodiment as a sleeve, on which the sleeve 18 is arranged concentrically.
The application of the features of the present invention is not limited to cassette blinds, but these features may also be applied to blinds with a drive member that can be actuated whenever the resting position of 10 the blinds after actuation of the blind is to be reached at an exactly predetermined point, e.g., in order to avoid or achieve the coverage of slots, or to make it possible to represent special images with the blinds.
While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the 15 invention, it will be understood that the invention may be embodied otherwise without departing from such principles.
2i58~0~
LIST OF REFERENCE NUMBERS:
Blinds 10 Stop 2 Weightingprofile 11 Brake disk 3 Cassette profile 12 Brake disk 4 Winding shaft 13 End disk Drive chain 14 End disk 6 Drive member 15 Intermediate member 7 Pin 16 Coupling element 8 Housing 17 Torsion spring 9 Stop 18 Sleeve
FIELD OF THE INVENTION
The present invention pertains to a cassette blind with a winding shaft that is connected by coupling elements to a stationary pin and to a S drive member, where the coupling elements to the drive member engage in a winding up direction of the blind, and the coupling element connected to the stationary pin engage in an unwinding direction of the blind. In particular the present invention relates to such a blind where the winding shaft is prevented from unrolling at the end of the winding up.
BACKGROUND OF THE INVENTION
A cassette blind is known from DE 42 39 507-A1 and the corresponding U.S. Patent 5,443,109. This document describes friction 21587~2 disks, which are alternately fixed with teeth in axial grooves on the outer circumference of a stationarily anchored pin and in axial grooves on the inner circumference of a tubular housing which can be coupled with the drive member in the direction of rotation, and which can be pressed against 5 each other by axial forces with an axial displacement. To achieve this, one of two end disks which are axially displaceable on the pin are tensioned by a torque spring in the direction of rotation within a predetermined angle of rotation, and the other end disk is only axially displaceable. Relatively strong coupling or braking forces are initiated due to the relatively weak 10 torque spring, so that such a drive runs smoothly and is especially suitable for high blind weights. The problem arises in such and similar cassette blinds that even though the weighting profile arranged at the lower edge of the set of blinds can be pulled against the cassette profile of the cassette accommodating the winding shaft and the blind wound up on it when the 15 blinds are being pulled up, it drops back somewhat after the driving forces are eliminated, so that a narrow strip of the set of blinds again becomes visible between the weighting profile and the cassette profile. This is frequently undesirable, because it compromises the appearance of the pulled-up cassette-type blind.
SUMMARY AND OBJECTS OF THE INVENTION
The object of the present invention is therefore to design the drive means of the blind such that the weighting profile no longer drops back after the blind has been pulled up.
The present invention includes a winding shaft which is connected 21~8~ 02 to a stationary pin by a pin coupling means, and to a drive member by a drive coupling means. The drive coupling means engages the drive member to the winding shaft during rotary movement of the drive means in a winding up direction, and the pin coupling means engages the winding 5 shaft to the stationary pin during an unwinding direction. The coupling elements are arranged on the winding shaft rotatably over a predetermined angle against the action of the spring in the winding-up direction of the blinds.
It is achieved due to this design that the drive member can still be 10 rotated further additionally by a predetermined angle against the action of the spring at the end of the winding-up movement, when the weighting profile has already come into contact with the cassette profile. When the driving force applied manually or by a motor ceases to act, the weighting profile is held by the force of the spring against the cassette profile, so that 15 the elements of the now active brake coupling are movable within the predetermined angle of rotation for mutual engagement. The spring counteracts the weight of the blinds and can be designed as a relatively weak spring, so that the weight of the blinds pulls the coupling elements attached to the winding shaft into one stop position. The spring comes into 20 action only at the end of the winding-up movement of the blinds, so that it pulls the coupling elements into the other stop position of the predetermined angle of rotation, so that the coupling elements are rotatable in relation to one another within the predetermined angle when the weighting profile is already in contact with the cassette profile.
2158~
The angle of rotation of the winding shaft in relation to the coupling elements associated with it, is greater than the switching angle necessary for the engagement of the coupling elements acting between the winding shaft and the pin. Preferably the coupling elements include inner and outer S sleeves which are mounted concentrically one inside the other and are rotatable with respect to one another. These inner and outer sleeves are tensioned by the torsion spring against the direction of rotation of the drive member during the winding-up of the blinds. The inner and outer sleeves are provided on the winding shaft. The outer sleeve is non-rotatably 10 connected to the winding shaft, and the inner sleeve is connected rotatably between stops to the driving member. Coupling elements between the pin and the winding shaft include first and second brake disks which are alternating connected non-rotatably to the pin and to the winding shaft.
A cam means axially biases the first and second sets of brake disks against 15 each other.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is 20 made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
Figure 1 is a perspective view of a cassette blind, .
Figure 2 is a cross section through the cassette profile of the pulled-up blinds, Figure 3 is a cross section corresponding to Figure 2 according to a design according to the state of the art, Figure 4 is a longitudinal section through the drive-side end of the winding shaft in an axial plane, Figure S is a cross section along line V-V in Figure 4, and Figure 6 is a cross section along line VI-VI in Figure 4.
DETAILED DESCRIPTION OF THE PREFERRED
EMBODIMENT
Referring to the drawings and in particular to Figure 1, the exemplary embodiment shows a cassette blind, in which a set of blinds 1 includes a weighting profile 2 attached to the lower edge of which. The blind 1 can be wound up within a cassette profile 3 on a winding shaft 4 15 mounted therein.
Most often drive members are used which are arranged on one end within the winding shaft 4 and are actuated by a drive chain 5 led out of the cassette profile 3 on the side next to the blinds 1, are used for this purpose. It is also possible to have a motor-type drive means Cassette 20 blinds according to the present invention differ from roller blinds in that the blinds 1 are wound up on the winding shaft 4 by driving forces rather than by a torsion spring tensioned during the pulling down of the blinds.
The present invention includes a drive member 6 which can be rotated by the drive chain 5. On the one hand, coupling members, which 21~i87~2 make possible a non-rotatable connection between the drive member 6 and the winding shaft 4 for pulling up the blinds 1, are provided between the drive member 6 and the winding shaft 4. On the other hand, braking members, by which the winding shaft 4 is stopped as soon as driving forces S in the direction of winding up cease to act on the drive member 6, are provided between the winding shaft 4 and a stationarily anchored pin 7.
In the exemplary embodiment, the drive member 6 is mounted movably concentrically within a tubular housing 8, with its angle of rotation limited by stops. The angle of rotation is limited by stops 9 on the inner 10 jacket of the tubular winding shaft 4 and by stops 10 on the outer jacket of the housing 8. Brake disks 11 and 12, which are alternately connected non-rotatably to the pin 7 and non-rotatably to the tubular housing 8, are arranged axially displaceably on the pin 7. The assembly consisting of the brake disks 11 and 12 is supported at one end by an abutment 13 arranged 15 rigidly on the pin 7. The end disk 14 at the opposite end has an axial cam, which cooperates with an axial cam at an intermediate member 15 such that the assembly consisting of the brake disks 11 and 12 is released during a rotary movement of the drive member 6 in the winding-up direction of the blinds 1 and compressed by the axial cams at the beginning of a rotary 20 movement in the opposite direction.
A coupling member 16, which is non-rotatably connected to the housing 8, is connected movably over an angle of rotation against a torsion spring 17 to a sleeve 18, which is connected to the winding shaft 4 axially movably but non-rotatably. The outer sleeve 18 is non-rotatably connected 213~70~
to the said winding shaft 4, and the inner sleeve 16 is connected rotatably between stops to the drive member 6.
Pin-like radial projections of the sleeve 18 engage profiled grooves of the stops 9 on the inner circumference of the tubular winding shaft 4.
S One end of the torsion spring 17 is attached to the coupling element 16, and the other end of the torsion spring 17 is attached to the sleeve 18. The torsion spring 17 is tensioned during a rotary movement of the drive member 6 in the winding-up direction of the blinds 1.
The weight of the blinds overcomes the maximum spring tension, so 10 that the tubular housing 8 and the tubular winding shaft 4 reach a stop position defined by the stops 9 and 10. The torsion spring 17 begins to act at the top end of the rolling-up movement of the blinds 1 such that it rotates the winding shaft 4 in a leading manner, so that the drive member 6 is still able to rotate further when the weighting strip has already 15 occupied the position shown in Figure 2 and is in contact with the cassette profile 3, as a result of which the further rotary movement of the winding shaft 4 is blocked. To avoid overstretching of the torsion spring 17, the possibility of further rotation ls limited by the stops 9 and 10 between the winding shaft 4 and the housing 8. In order for the assembly consisting of 20 the brake disks 11 and 12 to exert its braking effect, a slight backward rotation of the drive member 6 is possible. This rotation now takes place within the spring tension, so that the weighting profile 2 cannot drop back into the undesired position shown in Figure 3. The value of the angle limited by the stops 9 and 10 should be greater than the angle of rotation 2 1 3 8 7 ~ 2 necessary for the engagement of the braking elements, so that the weighting profile 2 is held against the cassette profile 3 in the position shown in Figure 2 with a slight spring tension. The coupling element 16 non-rotatably connected to the tubular housing 8 is also designed in the 5 exemplary embodiment as a sleeve, on which the sleeve 18 is arranged concentrically.
The application of the features of the present invention is not limited to cassette blinds, but these features may also be applied to blinds with a drive member that can be actuated whenever the resting position of 10 the blinds after actuation of the blind is to be reached at an exactly predetermined point, e.g., in order to avoid or achieve the coverage of slots, or to make it possible to represent special images with the blinds.
While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the 15 invention, it will be understood that the invention may be embodied otherwise without departing from such principles.
2i58~0~
LIST OF REFERENCE NUMBERS:
Blinds 10 Stop 2 Weightingprofile 11 Brake disk 3 Cassette profile 12 Brake disk 4 Winding shaft 13 End disk Drive chain 14 End disk 6 Drive member 15 Intermediate member 7 Pin 16 Coupling element 8 Housing 17 Torsion spring 9 Stop 18 Sleeve
Claims (6)
1. A cassette blind comprising:
a winding shaft;
a drive member including a drive coupling means for engaging with said winding shaft in a winding direction of said winding shaft;
a stationary pin including pin coupling means for engaging with said winding shaft in an unwinding direction of said winding shaft;
spring means connected to said winding shaft and for biasing said drive coupling element in said wind up direction over a predetermined angle.
a winding shaft;
a drive member including a drive coupling means for engaging with said winding shaft in a winding direction of said winding shaft;
a stationary pin including pin coupling means for engaging with said winding shaft in an unwinding direction of said winding shaft;
spring means connected to said winding shaft and for biasing said drive coupling element in said wind up direction over a predetermined angle.
2. A cassette blind in accordance with claim 1, wherein:
an angle of rotation of said winding shaft with respect to said drive and pin coupling means is greater than a switching angle necessary for engagement of said pin coupling means.
an angle of rotation of said winding shaft with respect to said drive and pin coupling means is greater than a switching angle necessary for engagement of said pin coupling means.
3. A cassette blind in accordance with claim 1, further comprising:
inner and outer sleeves mounted concentrically one inside the other and on said winding shaft, said first and second sleeves being rotatable with respect to each other and biased by said spring means against a direction of said drive member during winding of said winding shaft.
inner and outer sleeves mounted concentrically one inside the other and on said winding shaft, said first and second sleeves being rotatable with respect to each other and biased by said spring means against a direction of said drive member during winding of said winding shaft.
4. A cassette blind in accordance with claim 3, wherein:
said outer sleeve is non rotatably connected to said winding shaft;
said inner sleeve is connected rotatably between stops to said drive member.
said outer sleeve is non rotatably connected to said winding shaft;
said inner sleeve is connected rotatably between stops to said drive member.
5. A cassette blind in accordance with claim 1, wherein:
said pin coupling means includes a first set of brake disks non-rotatably connected to said stationary pin, said pin coupling means includes a second set of brake disks non-rotatably connected to said winding shaft, said pin coupling means includes cam means for axially biasing said first and second set of brake disks against each other.
said pin coupling means includes a first set of brake disks non-rotatably connected to said stationary pin, said pin coupling means includes a second set of brake disks non-rotatably connected to said winding shaft, said pin coupling means includes cam means for axially biasing said first and second set of brake disks against each other.
6. A blind comprising:
a winding shaft;
a drive member which can be actuated and including a drive coupling means for engaging with said winding shaft in a winding direction of said winding shaft;
a stationary pin including pin coupling means for engaging with said winding shaft in an unwinding direction of said winding shaft;
a brake coupling connected to said winding shaft;
spring means connected to said winding shaft and for biasing said drive coupling element in said wind up direction over a predetermined angle.
a winding shaft;
a drive member which can be actuated and including a drive coupling means for engaging with said winding shaft in a winding direction of said winding shaft;
a stationary pin including pin coupling means for engaging with said winding shaft in an unwinding direction of said winding shaft;
a brake coupling connected to said winding shaft;
spring means connected to said winding shaft and for biasing said drive coupling element in said wind up direction over a predetermined angle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4436504.7 | 1994-10-13 | ||
| DE4436504A DE4436504C1 (en) | 1994-10-13 | 1994-10-13 | Roller blind with brake coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2158702A1 true CA2158702A1 (en) | 1996-04-14 |
Family
ID=6530612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002158702A Abandoned CA2158702A1 (en) | 1994-10-13 | 1995-09-20 | Cassette blind with brake coupling |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0707128B1 (en) |
| CA (1) | CA2158702A1 (en) |
| DE (1) | DE4436504C1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0101070D0 (en) * | 2001-01-16 | 2001-02-28 | Reddiplex Group Plc | Display stands |
| DE102005008486B4 (en) * | 2005-02-24 | 2011-08-18 | Perfecta Nova Rolladen und Sonnenschutz GmbH, 86707 | Insect screen |
| IT1394369B1 (en) * | 2009-05-26 | 2012-06-15 | Medal Srl | ROLLING SHUTTER FOR DOORS AND WINDOWS EQUIPPED WITH BRAKING DEVICE |
| US10407982B2 (en) * | 2014-06-24 | 2019-09-10 | Lutron Technology Company Llc | Retention systems for window treatment installations |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4239507C2 (en) * | 1992-11-25 | 1995-03-23 | Benthin Management Gmbh | Roller blind drive |
-
1994
- 1994-10-13 DE DE4436504A patent/DE4436504C1/en not_active Expired - Fee Related
-
1995
- 1995-08-19 EP EP95113071A patent/EP0707128B1/en not_active Expired - Lifetime
- 1995-09-20 CA CA002158702A patent/CA2158702A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0707128B1 (en) | 2000-11-08 |
| EP0707128A1 (en) | 1996-04-17 |
| DE4436504C1 (en) | 1995-11-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |