US3921694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical venetian blinds
Assignee: Individual
•
Filing: 1973-04-10
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Granted: 1975-11-25
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Expires: 1993-04-10
Abstract
Abstract Vertical Venetian blinds supported by a lower horizontal Ushaped channel and guided by an upper inverted U-shaped channel member. The ends of the slats forming the blinds may be connected together by unseen conventional tape or by strings with ladders within the channels to an end rail on either side. A releasible pin projects downwardly from the end rails through an aperture in the lower channel to retain the blind in fully extended position. The end rails can be rotated in place to lock the overlapped slats in closed position. A rigid pin extends upwardly from the top of the end rails which cooperates with means disposed on the upper channel for holding the slats in a vertical position when the blind is drawn to either side. Each ladder is secured within a bentover portion or portions of both ends of the slats.
Inventors
- 👤 Gerald Galex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:12
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/36; E06B9/367; Y; Y10; Y10S; Y10S160/00; Y10S160/90
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
73 words
A Venetian blind comprising two vertical end rails, a plurality of vertical slats, a horizontal tape provided with transverse ladders connecting said rails at top and bottom thereof, said ladders spacing said slats between said rails, a horizontal lower member and a horizontal upper member, said lower member supporting said blind, and guide means disposed in said upper member for retaining said blind in upright position when being drawn from end to end.
Claim 2
Dependent Claim
73 words
A Venetian blind comprising two vertical end rails, a plurality of vertical slats, a horizontal tape provided with transverse ladders connecting said rails at top and bottom thereof, said ladders spacing said slats between said rails, a horizontal lower member and a horizontal upper member, said lower member supporting said blind, and guide means disposed in said upper member for retaining said blind in upright position when being drawn from end to end.
Claim 3
Dependent Claim
25 words
A Venetian blind according to claim 1, wherein an upright channel member forms said lower member and an inverted channel member forms said upper member.
Claim 4
Dependent Claim
23 words
A Venetian blind according to claim 1, wherein said guide means comprises a groove running longitudinally along the roof of said upper member.
Claim 5
Dependent Claim
28 words
A Venetian blind according to claim 3, wherein two angle members mounted edge to edge form said upper member with said edges spaced apart to form said groove.
Claim 6
Dependent Claim
23 words
A Venetian blind according to claim 1, wherein both ends of each said slat are bent over to enclose one of said ladders.
Claim 7
Dependent Claim
30 words
A Venetian blind according to claim 5, wherein each of said ends are folded over one of said ladders, and including means for retaining said ladders within the resulting fold.
Claim 8
Dependent Claim
27 words
A Venetian blind according to claim 6, wherein portions of said ends are folded over in opposite directions and said ladder is retained within each resulting fold.
Claim 9
Dependent Claim
55 words
A Venetian blind according to claim 7, wherein the ends of said slats are slit to form two small end flaps and one large center flap, said center flap being folded in one direction and said end flaps being folded in the opposite direction and said ladder being trapped beneath said center and end folds.
Claim 10
Dependent Claim
54 words
A Venetian blind according to claim 1, including retaining means disposed in said rails wherein a first pin projects upwardly from the top of said rail through a first aperture in said upper channel and a second pin projects downwardly from the bottom of said rail through a second aperture in said lower channel.
Claim 11
Dependent Claim
54 words
A Venetian blind according to claim 9, wherein a longitudinal groove through the roof of said upper member forms said guide means and said first pin is depressably mounted against a first spring within said rail to escape said first aperture and rebound into said groove for gliding therein when said blind is drawn.
Claim 12
Dependent Claim
40 words
A Venetian blind according to claim 9, wherein said second pin is depressably mounted against a second spring within said rail to escape said second aperture for gliding across the floor of said lower channel when said blind is drawn.
Claim 13
Dependent Claim
40 words
A Venetian blind according to claim 9, wherein at least two rigid prongs are disposed on either side of said second pin, said prongs projecting downwardly through complementary apertures in said lower channel to lock said blind in closed position.
Claim 14
Dependent Claim
35 words
A Venetian blind according to claim 1, wherein the inner and outer surfaces of said slats are alternated in said blind so that their reversely curved edges overlap thus producing a view-proof blind when closed.
Claim 15
Dependent Claim
20 words
A Venetian blind according to claim 1, wherein said tape is hidden from view behind said upper and lower members.
Claim 16
Dependent Claim
80 words
A Venetian blind according to claim 1, wherein slots are disposed proximate the top of said slats and said rails, a spring biased weight is counter sunk within a supporting structure proximate the top of one of said rails, a cord fastened between said weight and the Opposite of said rails, said cord passing through said slots and said slats sliding across said cord from side to side when pushed by one of said rails to open and closed positions.
Claim 17
Dependent Claim
19 words
A Venetian blind according to claim 3, wherein a blocking curve terminates at least one end of said groove.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |