Patent US3835911A successfully refreshed from Google Patents.
US3835911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically operable drive arrangement for venetian blinds
Assignee: Individual
•
Filing: 1972-12-04
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Granted: 1974-09-17
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Expires: 1992-12-04
Abstract
Abstract The invention relates to an electrically operable drive arrangement for venetian blinds with at least one draw tape which tape is wound up or down by a motor located in the header. Switches in the header are operated by a feeler which moves respectively perpendicular to or parallel to the tape as the tape moves from its normal tangential position on the take-up roller upon bottoming of the blind, or when the blind reaches fully raised position.
Inventors
- 👤 W Horst
- 👤 H Coldewey
- 👤 M Ammazzalorso
- 👤 E Schuppler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:04
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28; E06B9/30; E06B9/32; E06B9/322; Y; Y10; Y10S; Y10S160/00; Y10S160/17
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
182 words
An electrically operable drive arrangement for venetian blinds with at least one draw tape comprising a windup roller and motor located in a header, a bottom board on a blind attached to said draw tape, switch operating means including a single unitary feeler mounted to said header and movable in a first plane running essentially transversely to the loaded draw tape with the feeler end portion operatively adjacent and responsive to the transverse location of the tape for effecting movement of the feeler in said first plane and additionally movable in a second plane which runs essentially parallel to the loaded draw tape with the said feeler end portion responsive to vertical location of the blind bottom board for effecting movement of the feeler in said second plane, a first switch operable by said feeler upon movement thereof in the first plane perpendicular to said draw tape, and a second switch operable by said feeler in the second plane parallel to said draw tape, each of said switches being effective to stop operation of said motor in a given direction of rotation.
Claim 2
Dependent Claim
182 words
An electrically operable drive arrangement for venetian blinds with at least one draw tape comprising a windup roller and motor located in a header, a bottom board on a blind attached to said draw tape, switch operating means including a single unitary feeler mounted to said header and movable in a first plane running essentially transversely to the loaded draw tape with the feeler end portion operatively adjacent and responsive to the transverse location of the tape for effecting movement of the feeler in said first plane and additionally movable in a second plane which runs essentially parallel to the loaded draw tape with the said feeler end portion responsive to vertical location of the blind bottom board for effecting movement of the feeler in said second plane, a first switch operable by said feeler upon movement thereof in the first plane perpendicular to said draw tape, and a second switch operable by said feeler in the second plane parallel to said draw tape, each of said switches being effective to stop operation of said motor in a given direction of rotation.
Claim 3
Dependent Claim
25 words
Arrangement according to claim 1 wherein the feeler is movable in one plane of movement by means of an element coupled with the bottom board.
Claim 4
Dependent Claim
14 words
Arrangement according to claim 2 wherein the moving element is an adjustable release pin.
Claim 5
Dependent Claim
35 words
Arrangment according to claim 1 wherein both switches and at least a part of said feeler are substantially located within the header but with the end portion of the feeler disposed exteriorly of the header.
Claim 6
Dependent Claim
31 words
An arrangement as claimed in claim 4 wherein the exteriorly disposed feeler end portion is offset from the body thereof and disposed in the path of vertical movement of the blind.
Claim 7
Dependent Claim
22 words
Arrangement according to claim 1 wherein the feeler has a slotted passage opening which encloses the draw tape substantially on all sides.
Claim 8
Dependent Claim
23 words
Arrangement according to at least claim 1 wherein the feeler and both switches are mounted on a base plate installed in the header.
References Cited (Backward Citations)
US3603372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |