US4327797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horizontal type blind
Assignee: Yokota KK
•
Filing: 1979-09-20
•
Granted: 1982-05-04
•
Expires: 1999-09-20
Abstract
Abstract A horizontal type blind having a novel mechanism for opening and closing slats which includes a pair of drive shafts juxtaposed in a housing fixed to a head box and adapted to be rotated in the same direction by pulling a slats-opening and closing cord and a pair of rollers connected to the drive shafts respectively and having two straps for holding the slats wound therearound respectively so as to feed either one of the straps while taking up the other according to the rotation of the rollers.
Inventors
- 👤 Yukihiko Nakajima
- 👤 Mitsuru Ohkubo
- 👤 Tadakatsu Hashimoto
- 👤 Shigeki Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:21
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28; E06B9/30; E06B9/32; E06B9/324
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A venetian blind, comprising a head box, a plurality of horizontal slats suspended below said head box by at least one pair of spaced straps, means cooperable with said straps for tilting said slats, a manually operable control cord, means responsive to operation of said control cord for raising and lowering said slats, and means for stopping lowering of the slats, said stopping means including a rotatably supported guide roller for guiding downwardly said control cord which extends lengthwise within said head box, a guide member disposed inside a corner formed by said control cord guided by said guide roller so as to extend slantingly upwardly and having a toothed surface thereon facing the portion of said control cord guided downwardly, a toothed roller loosely fitted in a gap of inverted V-shape defined by said surface of said guide member and the portion of said control cord extending downwardly, and a pinch roller rotatably supported on said guide member on the side of said control cord opposite said surface and said toothed roller.
Claim 2
Dependent Claim
173 words
A venetian blind, comprising a head box, a plurality of horizontal slats suspended below said head box by at least one pair of spaced straps, means cooperable with said straps for tilting said slats, a manually operable control cord, means responsive to operation of said control cord for raising and lowering said slats, and means for stopping lowering of the slats, said stopping means including a rotatably supported guide roller for guiding downwardly said control cord which extends lengthwise within said head box, a guide member disposed inside a corner formed by said control cord guided by said guide roller so as to extend slantingly upwardly and having a toothed surface thereon facing the portion of said control cord guided downwardly, a toothed roller loosely fitted in a gap of inverted V-shape defined by said surface of said guide member and the portion of said control cord extending downwardly, and a pinch roller rotatably supported on said guide member on the side of said control cord opposite said surface and said toothed 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) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |