US4180118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cord lock mechanism for venetian blind
Assignee: Hunter Douglas International NV
•
Filing: 1978-07-13
•
Granted: 1979-12-25
•
Expires: 1998-07-13
Abstract
Abstract A cord locking mechanism is described for a venetian blind for locking the flexible blind lifting and lowering member in any selected position by gripping the member between a guide and a serrated locking pin movable toward and from the guide; a helper member is movable toward and from the locking pin when in its unlocked position in order to insure engagement of the flexible member with the locking pin and movement of the locking pin into a locking position.
Inventors
- 👤 Francis Vecchiarelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:21
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28; E06B9/30; E06B9/32; E06B9/324; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3969; Y10T24/3976
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
172 words
A cord locking mechanism for a venetian blind comprising a lock housing, a flexible blind lifting and lowering member, a guide mounted in said housing for guiding said flexible member, a track in said housing, a locking pin mounted for movement in said track to and from a first position close to said guide and a second position remote from said guide, said flexible member extending between said guide and said locking pin, said pin when in said first position serving to grip said flexible member between said guide and said pin for preventing movement of said flexible member in one direction, helper means mounted for movement in said housing toward and away from the second position of said pin for urging said flexible member into engagement with said pin when said pin is in said second position and said helper means being so mounted as to move away from the second position of said pin upon movement of said flexible member away from said pin to raise or lower said blind.
Claim 2
Dependent Claim
172 words
A cord locking mechanism for a venetian blind comprising a lock housing, a flexible blind lifting and lowering member, a guide mounted in said housing for guiding said flexible member, a track in said housing, a locking pin mounted for movement in said track to and from a first position close to said guide and a second position remote from said guide, said flexible member extending between said guide and said locking pin, said pin when in said first position serving to grip said flexible member between said guide and said pin for preventing movement of said flexible member in one direction, helper means mounted for movement in said housing toward and away from the second position of said pin for urging said flexible member into engagement with said pin when said pin is in said second position and said helper means being so mounted as to move away from the second position of said pin upon movement of said flexible member away from said pin to raise or lower said blind.
Claim 3
Dependent Claim
16 words
The device of claim 1 in which said guide and said helper means are separate elements.
Claim 4
Dependent Claim
19 words
The device of claim 1 in which said guide and helper means are portions of a single physical element.
Claim 5
Dependent Claim
46 words
The device of claim 3 including said single element being a flat spring, a fixed pin, one end portion of said flat spring being said guide and being entrained over said fixed pin, and the other end portion of said flat spring being said helper means.
Claim 6
Dependent Claim
37 words
The device of claim 2 in which said helper means comprises a second track in said housing disposed at an angle to said first mentioned track and a helper pin mounted in said track for movement therealong.
Claim 7
Dependent Claim
48 words
The device of claim 4 in which said flat spring has a first terminus secured to said fixed pin, said one end portion entrained over said fixed pin is in engagement with the circumference of said fixed pin and said other portion extends outwardly of said fixed pin.
Claim 8
Dependent Claim
63 words
The device of claim 3 including a freely rotatable roller mounted in said housing, said single element being a substantially flat material, one end portion of said single element being shaped and dimensioned to substantially fixedly embrace the circumference of said freely rotatable roller, the remainder of said single element extending outwardly of said roller, said outwardly extending remainder providing said helper means.
Claim 9
Dependent Claim
66 words
The device of claim 4 including a second fixed pin, said one end portion being entrained in one direction about said second pin and in the opposite direction over said first mentioned fixed pin, said entrainment of said one portion with respect to said fixed pins being loose, and the other end portion extending outwardly from said first mentioned fixed pin to provide said helper means.
References Cited (Backward Citations)
US198527A
Cited
US2172657A
Cited
US1482268A
Cited
US1457029A
Cited
US2155945A
Cited
US3294153A
Cited
US3756565A
Cited
US3952789A
Cited
US4049303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |