US3448943A - Roller screens - Google Patents
Roller screens Download PDFInfo
- Publication number
- US3448943A US3448943A US638054A US3448943DA US3448943A US 3448943 A US3448943 A US 3448943A US 638054 A US638054 A US 638054A US 3448943D A US3448943D A US 3448943DA US 3448943 A US3448943 A US 3448943A
- Authority
- US
- United States
- Prior art keywords
- spring
- drum
- core
- sleeve
- secured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- E06B9/60—Spring drums operated only by closure members
Definitions
- the present invention relates to roller screen mechanisms or similar winding mechanisms which comprise a screw spring which is placed around a core and secured thereto with one end, the other end of said spring being secured to a drum surrounding the spring and serving as a winding core for a flexible web or curtain.
- the winding power is obtained from a screw spring provided in the winding drum, said spring being tensioned when the screen or curtain is pulled down, i.e. when the flexible web is wound off from the drum.
- a spring which on the one hand is very strong and on the other hand is capable of being wound (tightened) the suflicient number of revolutions around the core. It has been found that the end of the spring which is secured to the movable drum will be actuated to a considerably greater extent thaan the opposite end which is attached to the fixed core.
- the movable end of the spring or the drum will be brought closer and'closer to the core during the winding movement, untilthe spring is tightened around the core to such an extent, that continued rotation of the drum is prohibited, despite the fact that a substantial portion of the spring has not been utilized in the winding movement.
- the present invention provides a solution to the above problem and is substantially characterised in that sleeve means consisting of one or several rotatable but axially non-displaceable sleeves are provided mounted around the core, the outer diameter of said sleeves being smaller than the inner diameter of the screw spring.
- FIGURE 1 is a partly broken front view of a roller screen assembly according to one embodiment of the present invention
- FIGURE 2 is an axial section to a larger scale through a portion of the winding drum
- FIGURE 1 and FIGURE 3 is a section corresponding to FIGURE 2 showing a slightly different modified embodiment having an auxiliary sleeve.
- the roller screen assembly comprises a tubular core 1 which is provided at both ends with a screw-threaded pin 2.
- the core 1 is surrounded by a rotatable but axially nondisplaceable sleeve means 3 which is secured against axial displacement by means of locking rings 4 secured to the core adjacent the ends of said sleeve means.
- the core 1 is also surrounded by a screw spring 5 which has one end secured to the core and its other end secured to a drum 6 surrounding said spring, or to United States Patent 0 3,448,943 Patented June 10, 1969 a movable end wall 7 of said ,drum, respectively.
- the end wall 7 and a corresponding endwall 8 at the opposite end of the drum support journalling means 9 such as ball bearings for the core 1.
- the pins 2 of the core have an out-of-round cross-section and are supported by brackets 10 provided with correspondingly shaped openings.
- the inner diameter of the screw spring is slightly larger than the outer diameter of the sleeve means, and the latter preferably extends from that end of the spring which is secured to the drum to approximately two thirds of the length of the screw spring.
- the sleeve means 3 may be made in several separate pieces, and the length of the sleeve, or the total length of such pieces, respectively, may be equal to the length of the screw spring or shorter than the two thirds of the length of the screw spring mentioned above.
- FIGURE 3 A modified embodiment of the above-described arrangement is illustrated in FIGURE 3.
- a further auxiliary sleeve 12 which is attached to the end wall 7 of the drum by means of a flange portion 15 and screws 13 projects into the space between the spring 5 and the sleeve means 3 at that end where the spring 5 is secured to the drum end movable wall 7.
- a winding up mechanism for roller screens or the core and having one end attached thereto a drum surrounding said spring, said drum having an end wall, a flexible web, a screw threaded pin mounted axially at each end of said core, and having an out-of-round crosssection, the opposite end of said spring being connected to said drum surrounding said spring and serving as a winding core for said flexible web constituting said roller screen or the like, characterised in that rotatable but axially non-displaceable sleeve means are provided around said core, the outer diameter of said sleeve means being smaller than the inner diameter of said screw spring, and locking rings secured to said core adjacent the ends of said sleeve means.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Description
' L. B. SzHERQU June 10,1969 I ROLLER scmssns Sheet of 2 q I Filed lay 1.2, 1967 FIG. 7
FIG. 2
INVENTOR LHRS BORJE svmv E HEROU BY (M ATTORNEYS June 10, 1969 a. s. HEROU 3,448,943
ROLLER SCREENS INVENTOR LARS BORJE svA -E HEROU ATTORNEYS 3,448,943 ROLLER SCREENS Lars Borje Svante Heron, Slatvarsgatan 24, Vastra Frolunda, Sweden Filed May 12, 1967, Ser. No. 638,054 Claims priority, applicsatigimszveden, May 16, 1966,
Int. cl. B65h 75/48 US. Cl. 242-107 3 Claims ABSTRACT OF THE DISCLOSURE The present invention relates to roller screen mechanisms or similar winding mechanisms which comprise a screw spring which is placed around a core and secured thereto with one end, the other end of said spring being secured to a drum surrounding the spring and serving as a winding core for a flexible web or curtain.
In self-winding screens or blinds the winding power is obtained from a screw spring provided in the winding drum, said spring being tensioned when the screen or curtain is pulled down, i.e. when the flexible web is wound off from the drum. If the screen is very wide, such as several meters, and comparatively long, it is necessary to use a spring which on the one hand is very strong and on the other hand is capable of being wound (tightened) the suflicient number of revolutions around the core. It has been found that the end of the spring which is secured to the movable drum will be actuated to a considerably greater extent thaan the opposite end which is attached to the fixed core. As a result, the movable end of the spring or the drum will be brought closer and'closer to the core during the winding movement, untilthe spring is tightened around the core to such an extent, that continued rotation of the drum is prohibited, despite the fact that a substantial portion of the spring has not been utilized in the winding movement.
The present invention provides a solution to the above problem and is substantially characterised in that sleeve means consisting of one or several rotatable but axially non-displaceable sleeves are provided mounted around the core, the outer diameter of said sleeves being smaller than the inner diameter of the screw spring. The present invention is described in greater detail herebelow with reference to the accompanying drawings, wherein:
FIGURE 1 is a partly broken front view of a roller screen assembly according to one embodiment of the present invention,
FIGURE 2 is an axial section to a larger scale through a portion of the winding drum, of FIGURE 1 and FIGURE 3 is a section corresponding to FIGURE 2 showing a slightly different modified embodiment having an auxiliary sleeve.
The roller screen assembly comprises a tubular core 1 which is provided at both ends with a screw-threaded pin 2. The core 1 is surrounded by a rotatable but axially nondisplaceable sleeve means 3 which is secured against axial displacement by means of locking rings 4 secured to the core adjacent the ends of said sleeve means. The core 1 is also surrounded by a screw spring 5 which has one end secured to the core and its other end secured to a drum 6 surrounding said spring, or to United States Patent 0 3,448,943 Patented June 10, 1969 a movable end wall 7 of said ,drum, respectively. The end wall 7 and a corresponding endwall 8 at the opposite end of the drum support journalling means 9 such as ball bearings for the core 1. The pins 2 of the core have an out-of-round cross-section and are supported by brackets 10 provided with correspondingly shaped openings. A flexible web or curtain adapted to be wound around the drum, such as a web of textile or plastic material, is indicated at 11. The inner diameter of the screw spring is slightly larger than the outer diameter of the sleeve means, and the latter preferably extends from that end of the spring which is secured to the drum to approximately two thirds of the length of the screw spring.
When the web 11 is wound off from the drum the screw spring will be tensioned, whereas that portion of the spring which is adjacent the movable end wall 7 will be brought closer and closer to the sleeve 3 until it engages the sleeve, whereafter the sleeve will be brought along in the rotating movement of the screw spring.
The sleeve means 3 may be made in several separate pieces, and the length of the sleeve, or the total length of such pieces, respectively, may be equal to the length of the screw spring or shorter than the two thirds of the length of the screw spring mentioned above.
A modified embodiment of the above-described arrangement is illustrated in FIGURE 3. In this embodiment a further auxiliary sleeve 12 which is attached to the end wall 7 of the drum by means of a flange portion 15 and screws 13 projects into the space between the spring 5 and the sleeve means 3 at that end where the spring 5 is secured to the drum end movable wall 7. This has the effect that when the flexible web is wound ofi from the drum 6 and the spring 5 is thus tensioned, the first convolutions of the spring, counted from the end wall 7, will be tightened around the auxiliary sleeve 12 thereby protecting the end portion of the freely rotatable sleeve means 3 from excessive wear due to relative movement between the spring convolutions and the sleeve means, and it also has the eifect of relieving that end portion of the spring 5 which is secured to the drum end wall 7 from undue stress. The free end of the auxiliary sleeve 12 is bevelled externally as at 14 to provide a smooth transition between the spring convolutions on the auxiliary sleeve 12 and those on the sleeve 3.
What is claimed is:
1. A winding up mechanism for roller screens or the core and having one end attached thereto, a drum surrounding said spring, said drum having an end wall, a flexible web, a screw threaded pin mounted axially at each end of said core, and having an out-of-round crosssection, the opposite end of said spring being connected to said drum surrounding said spring and serving as a winding core for said flexible web constituting said roller screen or the like, characterised in that rotatable but axially non-displaceable sleeve means are provided around said core, the outer diameter of said sleeve means being smaller than the inner diameter of said screw spring, and locking rings secured to said core adjacent the ends of said sleeve means.
2. A mechanism as claimed in claim 1, characterised in that said sleeve means extends from that end of the spring which is secured to the drum to substantially two thirds of the length of said screw spring, said drum having a movable end wall and said spring being secured to said end wall.
3. A mechanism as claimed in claim 1, characterised in that a further auxiliary sleeve having an inner diameter larger than the outer diameter of said first-mentioned sleeve means and an outer diameter smaller than the inner diameter of said spring is provided between said 3 4 spring and said sleeve means at that end of the spring 1,878,710 9/1932 Watson 160-315 X which is secured to the drum, said further auxiliary sleeve 2,765,843 10/ 1956 Nilles 160318 X being secured to said drum.
WILLIAM S. BURDEN, Primary Examiner. References Cited 5 UNITED STATES PATENTS US. Cl. X.R.
718,172 1/1903 Tennis 242 -1()7,5 160-313
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE668066 | 1966-05-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3448943A true US3448943A (en) | 1969-06-10 |
Family
ID=20269336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US638054A Expired - Lifetime US3448943A (en) | 1966-05-16 | 1967-05-12 | Roller screens |
Country Status (6)
Country | Link |
---|---|
US (1) | US3448943A (en) |
BE (1) | BE698504A (en) |
DE (1) | DE1659997A1 (en) |
DK (1) | DK115870B (en) |
GB (1) | GB1174827A (en) |
NL (1) | NL6706803A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4373569A (en) * | 1980-10-06 | 1983-02-15 | Bernard Barettella | Window shade roller assembly |
US5544689A (en) * | 1993-05-17 | 1996-08-13 | Wegner; Gary D. | Window attachment screen system |
US6523770B2 (en) * | 2000-05-17 | 2003-02-25 | Inalfa Industries B.V. | Winding mechanism for a sun screen |
US6618998B1 (en) | 2001-08-07 | 2003-09-16 | Larson Manufacturing Company | Door with variable length screen |
US20050081463A1 (en) * | 2003-10-17 | 2005-04-21 | Richard Allen | Retractable screen system providing a positioning force for a movable sash |
WO2006083226A1 (en) * | 2005-02-07 | 2006-08-10 | Agman Group Ltd | Banner stand |
US20070056698A1 (en) * | 2005-09-12 | 2007-03-15 | Paul Lin | Sun-shade assembly |
US20080196844A1 (en) * | 2007-02-16 | 2008-08-21 | Overhead Door Corporation | Counterbalance system for upward acting door |
US20110303781A1 (en) * | 2010-06-14 | 2011-12-15 | Chao-Pang Wang | Automatic banner roll-up mechanism |
US20150300084A1 (en) * | 2014-02-11 | 2015-10-22 | Hennig Holding Gmbh | Covering device for openings, in particular for machine openings |
US20220412160A1 (en) * | 2021-06-28 | 2022-12-29 | Wuxi JHT Homewares Co., Ltd. | Roman shade |
US11643864B2 (en) | 2018-01-23 | 2023-05-09 | Pella Corporation | Screen edge retention and screen rethreading features for a hidden screen assembly and a fenestration assembly |
US12000208B2 (en) | 2020-01-31 | 2024-06-04 | Pella Corporation | Integrated pleated screen assembly |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8922937D0 (en) * | 1989-10-11 | 1989-11-29 | Pivot Eng | Improvements in or relating to self-winding reel assemblies |
DE29921294U1 (en) * | 1999-12-03 | 2001-04-12 | Knoke Beschlagtechnik GmbH, 32139 Spenge | Cupboard furniture with a blind |
DE102008016909B4 (en) * | 2008-03-25 | 2010-12-02 | Bos Gmbh & Co. Kg | window treatment |
CN102765640B (en) * | 2012-07-30 | 2015-03-18 | 贵州航天特种车有限责任公司 | Automatic retraction mechanism of cables |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US718172A (en) * | 1902-06-30 | 1903-01-13 | Edward Tennis | Razor-strop. |
US1878710A (en) * | 1928-09-14 | 1932-09-20 | William W Watson | Roller window screen |
US2765843A (en) * | 1954-04-05 | 1956-10-09 | Andrew G Nilles | Truck cover |
-
1967
- 1967-05-12 US US638054A patent/US3448943A/en not_active Expired - Lifetime
- 1967-05-15 GB GB22330/67A patent/GB1174827A/en not_active Expired
- 1967-05-16 DE DE19671659997 patent/DE1659997A1/en active Pending
- 1967-05-16 NL NL6706803A patent/NL6706803A/xx unknown
- 1967-05-16 DK DK254167AA patent/DK115870B/en unknown
- 1967-05-16 BE BE698504D patent/BE698504A/xx unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US718172A (en) * | 1902-06-30 | 1903-01-13 | Edward Tennis | Razor-strop. |
US1878710A (en) * | 1928-09-14 | 1932-09-20 | William W Watson | Roller window screen |
US2765843A (en) * | 1954-04-05 | 1956-10-09 | Andrew G Nilles | Truck cover |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4373569A (en) * | 1980-10-06 | 1983-02-15 | Bernard Barettella | Window shade roller assembly |
US5544689A (en) * | 1993-05-17 | 1996-08-13 | Wegner; Gary D. | Window attachment screen system |
US6523770B2 (en) * | 2000-05-17 | 2003-02-25 | Inalfa Industries B.V. | Winding mechanism for a sun screen |
US6618998B1 (en) | 2001-08-07 | 2003-09-16 | Larson Manufacturing Company | Door with variable length screen |
US20040231801A1 (en) * | 2001-08-07 | 2004-11-25 | Larson Manufacturing Company | Door with variable length screen |
US20050081463A1 (en) * | 2003-10-17 | 2005-04-21 | Richard Allen | Retractable screen system providing a positioning force for a movable sash |
US8024878B2 (en) | 2005-02-07 | 2011-09-27 | Expand International Ab | Banner stand |
WO2006083226A1 (en) * | 2005-02-07 | 2006-08-10 | Agman Group Ltd | Banner stand |
CN101142608B (en) * | 2005-02-07 | 2012-02-01 | 扩大国际股份公司 | Banner stand |
US20090019739A1 (en) * | 2005-02-07 | 2009-01-22 | Expand International Ab | Banner Stand |
US20070056698A1 (en) * | 2005-09-12 | 2007-03-15 | Paul Lin | Sun-shade assembly |
US7967051B2 (en) | 2007-02-16 | 2011-06-28 | Overhead Door Corporation | Counterbalance system for upward acting door |
US20110220304A1 (en) * | 2007-02-16 | 2011-09-15 | Overhead Door Corporation | Counterbalance system for upward acting door |
US20080196844A1 (en) * | 2007-02-16 | 2008-08-21 | Overhead Door Corporation | Counterbalance system for upward acting door |
US20110303781A1 (en) * | 2010-06-14 | 2011-12-15 | Chao-Pang Wang | Automatic banner roll-up mechanism |
US8272155B2 (en) * | 2010-06-14 | 2012-09-25 | Chao-Pang Wang | Automatic banner roll-up mechanism |
US20150300084A1 (en) * | 2014-02-11 | 2015-10-22 | Hennig Holding Gmbh | Covering device for openings, in particular for machine openings |
US11643864B2 (en) | 2018-01-23 | 2023-05-09 | Pella Corporation | Screen edge retention and screen rethreading features for a hidden screen assembly and a fenestration assembly |
US11643865B2 (en) | 2018-01-23 | 2023-05-09 | Pella Corporation | Roller assembly and screen end retention features for a hidden screen assembly and a fenestration assembly |
US12000208B2 (en) | 2020-01-31 | 2024-06-04 | Pella Corporation | Integrated pleated screen assembly |
US20220412160A1 (en) * | 2021-06-28 | 2022-12-29 | Wuxi JHT Homewares Co., Ltd. | Roman shade |
Also Published As
Publication number | Publication date |
---|---|
DE1659997A1 (en) | 1970-06-11 |
NL6706803A (en) | 1967-11-17 |
GB1174827A (en) | 1969-12-17 |
DK115870B (en) | 1969-11-17 |
BE698504A (en) | 1967-11-03 |
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