US4372367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller blinds
Assignee: Individual
•
Filing: 1980-05-19
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Granted: 1983-02-08
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Expires: 2000-05-19
Abstract
Abstract A roller blind includes a reversable electric motor disposed in and arranged to drive a roller winder via a reduction gear to roll-up and unroll the blind. The motor is switched off at an open and closed position of the blind by limit switches actuable by a control device drivable with the winding roller. The control device includes at least one actuating mechanism provided with first and last rotatable members. The first rotatable member can be brought into geared connection with the winding roller and the last rotatable member is associated with at least one of the limit switches and is provided with an actuator member to actuate the limit switches. The maximum rolling or unrolling-up length of the roller blind is arranged to correspond to an angular rotation of the last roller of less than 360°.
Inventors
- 👤 Umberto Baldanello
- 👤 Giuseppe Zottino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:16
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/56; E06B9/80; E06B9/82; E06B9/88; E06B9/68; E06B9/74; E06B2009/6809; E06B2009/6872
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
401 words
A drive mechanism for a winding roller upon which an element is to be wound, comprising: (a) a motor gear holder disposed within said winding roller; (b) a reversible electric drive motor disposed within said motor gear holder; (c) reduction gear means drivably connecting said motor to said winding roller; (d) a first limit switch actuable to switch off said drive motor in a rolled up position of said element wound on said winding roller, and a second limit switch actuable to switch off said drive motor in an unrolled position of said element wound on said winding roller; (e) a first and a second control means associated respectively to the said first and second limit switches, each control means being gearably drivable by the winding roller to actuate the respective limit switch, wherein each control means comprises a roll counting mechanism provided with at least two sequentially arranged counting rollers, the first counting roller being gearably connected with the winding roller, and the last counting roller presenting a limit switch actuator for actuating the respectively associated limit switch, and wherein the maximum length between the rolled up position and the unrolled position of said element wound on the winding roller corresponds to a angular rotation of said last counting roller of less than 360°; (f) a stationary bearing housing provided at one end of said winding roller, inside which bearing housing there are disposed the said first and second limit switches and the said first and second control means; wherein said counting rollers of each roll counting mechanism are each provided with a heart-shaped zero-setting cam cooperable with a zero-setting tappet and are movable relative to fixedly mounted transmission rollers and said zero-setting tappets by a manually operable adjusting device alternately to an inward position and an outward position, whereby in said inward position said counting rollers engage said transmission rollers, said first counting roller is in geared connection with said winding roller, said associated limit switch is actuable by said switch actuator of said last counting roller, and said zero-setting tappets are spaced from said associated zero-setting cams, and whereby in said outward position said counting rollers are spaced from said transmission rollers, said first counting roller is free of said winding roller, said associated limit switch is free from actuation by said switch actuator of said last counting roller, and said zero-setting tappets engage said associated zero-setting cams.
Claim 2
Dependent Claim
401 words
A drive mechanism for a winding roller upon which an element is to be wound, comprising: (a) a motor gear holder disposed within said winding roller; (b) a reversible electric drive motor disposed within said motor gear holder; (c) reduction gear means drivably connecting said motor to said winding roller; (d) a first limit switch actuable to switch off said drive motor in a rolled up position of said element wound on said winding roller, and a second limit switch actuable to switch off said drive motor in an unrolled position of said element wound on said winding roller; (e) a first and a second control means associated respectively to the said first and second limit switches, each control means being gearably drivable by the winding roller to actuate the respective limit switch, wherein each control means comprises a roll counting mechanism provided with at least two sequentially arranged counting rollers, the first counting roller being gearably connected with the winding roller, and the last counting roller presenting a limit switch actuator for actuating the respectively associated limit switch, and wherein the maximum length between the rolled up position and the unrolled position of said element wound on the winding roller corresponds to a angular rotation of said last counting roller of less than 360°; (f) a stationary bearing housing provided at one end of said winding roller, inside which bearing housing there are disposed the said first and second limit switches and the said first and second control means; wherein said counting rollers of each roll counting mechanism are each provided with a heart-shaped zero-setting cam cooperable with a zero-setting tappet and are movable relative to fixedly mounted transmission rollers and said zero-setting tappets by a manually operable adjusting device alternately to an inward position and an outward position, whereby in said inward position said counting rollers engage said transmission rollers, said first counting roller is in geared connection with said winding roller, said associated limit switch is actuable by said switch actuator of said last counting roller, and said zero-setting tappets are spaced from said associated zero-setting cams, and whereby in said outward position said counting rollers are spaced from said transmission rollers, said first counting roller is free of said winding roller, said associated limit switch is free from actuation by said switch actuator of said last counting roller, and said zero-setting tappets engage said associated zero-setting cams.
Claim 3
Dependent Claim
302 words
A drive mechanism for a winding roller upon which an element is to be wound, comprising: (a) a motor gear holder disposed within said winding roller; (b) a reversible electric drive motor disposed within said motor gear holder; (c) reduction gear means drivably connecting said motor to said winding roller; (d) a first limit switch actuable to switch off said drive motor in a rolled up position of said element wound on said winding roller, and a second limit switch actuable to switch off said drive motor in an unrolled position of said element wound on said winding roller; (e) a first and a second control means associated respectively to the said first and second limit switches, each control means being gearably drivable by the winding roller to actuate the respective limit switch, wherein each control means comprises a roll counting mechanism provided with at least two sequentially arranged counting rollers, the first counting roller being gearably connected with the winding roller, and the last counting roller presenting a limit switch actuator for actuating the respectively associated limit switch, and wherein the maximum length between the rolled up position and the unrolled position of said element wound on the winding roller corresponds to an angular rotation of said last counting roller of less than 360°; and (f) a stationary bearing housing provided at one end of said winding roller, inside which bearing housing there are disposed the said first and second limit switches and the said first and second control means, wherein said first counting roller of each roll counting mechanism comprises a toothed driving rim which is engageable with a toothed wheel drivable by said winding roller via a reduction gear and said counting rollers are mounted on a carrier bracket which is pivotable away from and towards said toothed wheel.
Claim 4
Dependent Claim
302 words
A drive mechanism for a winding roller upon which an element is to be wound, comprising: (a) a motor gear holder disposed within said winding roller; (b) a reversible electric drive motor disposed within said motor gear holder; (c) reduction gear means drivably connecting said motor to said winding roller; (d) a first limit switch actuable to switch off said drive motor in a rolled up position of said element wound on said winding roller, and a second limit switch actuable to switch off said drive motor in an unrolled position of said element wound on said winding roller; (e) a first and a second control means associated respectively to the said first and second limit switches, each control means being gearably drivable by the winding roller to actuate the respective limit switch, wherein each control means comprises a roll counting mechanism provided with at least two sequentially arranged counting rollers, the first counting roller being gearably connected with the winding roller, and the last counting roller presenting a limit switch actuator for actuating the respectively associated limit switch, and wherein the maximum length between the rolled up position and the unrolled position of said element wound on the winding roller corresponds to an angular rotation of said last counting roller of less than 360°; and (f) a stationary bearing housing provided at one end of said winding roller, inside which bearing housing there are disposed the said first and second limit switches and the said first and second control means, wherein said first counting roller of each roll counting mechanism comprises a toothed driving rim which is engageable with a toothed wheel drivable by said winding roller via a reduction gear and said counting rollers are mounted on a carrier bracket which is pivotable away from and towards said toothed wheel.
Claim 5
Dependent Claim
28 words
The drive mechanism according to claim 2 wherein said adjusting device associated with each actuating mechanism comprises a push-button mechanism settable at an advanced and a retracted position.
Claim 6
Dependent Claim
131 words
The drive mechanism according to claim 3, wherein said adjusting device associated with each roll counting mechanism comprises a displaceably and rotatably guided push button associated with a push button shaft which extends through a non-rotatably mounted locking disc and comprises sawteeth cooperable with matching sawteeth on said locking disc, whereby on pushing in said push button said push button shaft rotates by one angular step, and whereby said push-button shaft has an end portion gear to said pivotable carrier bracket via a sprung slide and is one of polygonal and star-shaped in cross section, said locking disc is provided with a passage bore having a cross-section of the same profile but corresponding to said cross section of said end portion after every second angular step of said push button shaft.
Claim 7
Dependent Claim
281 words
A drive mechanism for a winding roller upon which an element is to be wound, comprising: (a) a motor gear holder disposed within said winding roller; (b) a reversible electric drive motor disposed within said motor gear holder; (c) reduction gear means drivably connecting said motor to said winding roller; (d) a first limit switch actuable to switch off said drive motor in a rolled up position of said element wound on said winding roller, and a second limit switch actuable to switch off said drive motor in an unrolled position of said element wound on said winding roller; (e) a first and a second control means associated respectively to the said first and second limit switches, each control means being gearably drivable by the winding roller to actuate the respective limit switch, wherein each control means comprises a roll counting mechanism provided with at least two sequentially arranged counting rollers, the first counting roller being gearably connected with the winding roller, and the last counting roller presenting a limit switch actuator for actuating the respectively associated limit switch, and wherein the maximum length between the rolled up position and the unrolled position of said element wound on the winding roller corresponds to an angular rotation of said last counting roller of less than 360°; (f) a stationary bearing housing provided at one end of said winding roller, inside which bearing housing there are disposed the said first and second limit switches and the said first and second control means; and (g) further comprising means on which said counting rollers are pivotally mounted so that the first counting roller is pivoted so as to be gearably connected with the winding roller.
Claim 8
Dependent Claim
281 words
A drive mechanism for a winding roller upon which an element is to be wound, comprising: (a) a motor gear holder disposed within said winding roller; (b) a reversible electric drive motor disposed within said motor gear holder; (c) reduction gear means drivably connecting said motor to said winding roller; (d) a first limit switch actuable to switch off said drive motor in a rolled up position of said element wound on said winding roller, and a second limit switch actuable to switch off said drive motor in an unrolled position of said element wound on said winding roller; (e) a first and a second control means associated respectively to the said first and second limit switches, each control means being gearably drivable by the winding roller to actuate the respective limit switch, wherein each control means comprises a roll counting mechanism provided with at least two sequentially arranged counting rollers, the first counting roller being gearably connected with the winding roller, and the last counting roller presenting a limit switch actuator for actuating the respectively associated limit switch, and wherein the maximum length between the rolled up position and the unrolled position of said element wound on the winding roller corresponds to an angular rotation of said last counting roller of less than 360°; (f) a stationary bearing housing provided at one end of said winding roller, inside which bearing housing there are disposed the said first and second limit switches and the said first and second control means; and (g) further comprising means on which said counting rollers are pivotally mounted so that the first counting roller is pivoted so as to be gearably connected with the winding roller.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-07 | 1986-08-09 | 1987-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-07 | 1990-08-09 | 1991-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-07 | 1994-08-09 | 1995-02-08 | $7700.00 | Window Closed / Lapsed |