US4979715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hanger for suspended ceiling
Assignee: DISTRIBUTION MI-DI-SU Inc
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Filing: 1989-11-13
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Granted: 1990-12-25
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Expires: 2009-11-13
Abstract
Abstract A hanger for holding a suspended ceiling made of a continuous wire. The wire is shaped at one end, to form two superposed loops adapted to surround a screw which is intended to be threaded in a supporting ceiling. The wire is bent near the loops at about 90 degrees relative to the plane of the superposed loops. The short end of the wire is either twisted to the body of the wire or located inside the apex of the angle formed by the loops and the body of the wire so that it will be tightened when the screw is threaded in the supporting ceiling and the body of the wire is under tension.
Inventors
- 👤 Pierre J. Rancourt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:33
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
169 words
A hanger for holding a suspended ceiling comprising a continuous wire having two end portions and a uniform cross-section, said wire forming two superposed loops for surrounding a screw adapted to be fixed under a horizontal support, said loops having substantially the shape of a circle in a portion of the wire intermediate both of said end portions thereof, said both of said end portions of the wire extending from said loops being twisted at least twice over each other, one of said loops being twisted at least twice over each other, one of said end portions of said wire being longer than the other of said end portions adapted to be bent for holding a suspended ceiling, said loops disposed in superposed contiguous planes at an angle of about 90 degrees relative to both said end portions, said wire being sufficiently stiff to maintain the shape of the loops and of the angle of 90 degrees upon tension on said one of said end portions of the wire.
Claim 2
Dependent Claim
169 words
A hanger for holding a suspended ceiling comprising a continuous wire having two end portions and a uniform cross-section, said wire forming two superposed loops for surrounding a screw adapted to be fixed under a horizontal support, said loops having substantially the shape of a circle in a portion of the wire intermediate both of said end portions thereof, said both of said end portions of the wire extending from said loops being twisted at least twice over each other, one of said loops being twisted at least twice over each other, one of said end portions of said wire being longer than the other of said end portions adapted to be bent for holding a suspended ceiling, said loops disposed in superposed contiguous planes at an angle of about 90 degrees relative to both said end portions, said wire being sufficiently stiff to maintain the shape of the loops and of the angle of 90 degrees upon tension on said one of said end portions of the wire.
Claim 3
Dependent Claim
155 words
A hanger for holding a suspended ceiling comprising a continuous wire having two end portions and forming two superposed, parallel and contiguous loops for holding a screw adapted to be fixed under a horizontal support, said loops substantially having the shape of a circle adjacent one of said end portions of said wire, the other of said end portions of said wire extending substantially at an angle 90 degrees relative to said loops and adapted to retain suspended ceiling, said one of said end portion extending from the lower one of said loops inside an angle of 90 degrees formed by the loops and said other of said end portion of the wire, and adapted to be tightened inside the apex of said angle upon traction on said other of said end portions, said wire being sufficiently stiff to maintain the shape of the loops and of said angle of 90 degrees upon said traction.
Claim 4
Dependent Claim
155 words
A hanger for holding a suspended ceiling comprising a continuous wire having two end portions and forming two superposed, parallel and contiguous loops for holding a screw adapted to be fixed under a horizontal support, said loops substantially having the shape of a circle adjacent one of said end portions of said wire, the other of said end portions of said wire extending substantially at an angle 90 degrees relative to said loops and adapted to retain suspended ceiling, said one of said end portion extending from the lower one of said loops inside an angle of 90 degrees formed by the loops and said other of said end portion of the wire, and adapted to be tightened inside the apex of said angle upon traction on said other of said end portions, said wire being sufficiently stiff to maintain the shape of the loops and of said angle of 90 degrees upon said traction.
Claim 5
Dependent Claim
30 words
As in claim 1 or 2 wherein said wire is characterized by a stiffness sufficient to maintain its shape under normal traction by and lateral motion of the suspended ceiling.
Claim 6
Dependent Claim
32 words
As in claim 1 or 2 wherein the wire is made of soft galvanized steel wire having a diameter of 0.1 inch and a resistance to traction between 50 and 100 KIPS/P.S.I.
References Cited (Backward Citations)
FR1535595A
Cited
US3601862A
Cited
US3748804A
Cited
US3859770A
Cited
US3995823A
Cited
US4084364A
Cited
US4060025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-24 | 1994-06-25 | 1994-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-24 | 1998-06-25 | 1998-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-24 | 2002-06-25 | 2002-12-25 | $7700.00 | Window Closed / Lapsed |