Patent US4112550A successfully refreshed from Google Patents.
US4112550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspended ceiling hook
Assignee: Individual
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Filing: 1977-05-13
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Granted: 1978-09-12
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Expires: 1997-05-13
Abstract
Abstract A one piece suspended ceiling hook comprising an upper rail gripping portion and a downwardly extending hook portion. The upper portion includes two inwardly extending and opposing flanges having inner edges spaced apart from each other. A recess is formed within the upper portion with the inwardly extending flanges defining the upper border of the recess. The recess is adapted to receive a lower horizontal rim of a suspended ceiling beam. The upper portion is capable of flexing. Tabs extend outwardly and downwardly from the outer portion of the upper portion for manual movement to an inward position such that the upper portion flexes and the two opposing flanges move outwardly such that the inner edges of the flanges are a greater distance apart than the width of the lower rim of the suspended ceiling beam. The downwardly extending hook portion has edges which about the tabs when flexed to limit the extent the tabs can flex the upper portion.
Inventors
- 👤 Stuart DeWitt
- 👤 James S. DeWitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:40
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/006; F; F21; F21V; F21V21/00; F21V21/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
190 words
A hanger device for attachment to a support member with a rim with two outwardly extending planar edges comprising: an integrally formed upper portion including two inwardly extending and opposing flanges having inner edges spaced apart from each other and means defining a flexure point for each of said opposing flanges; a recess formed within the upper portion with the inwardly extending flanges defining the upper border of the recess, the recess adapted to receive the rim of the support member; tab means for manually moving the flanges outwardly about the flexure point to enlarge the distance between the inner edges to allow the rim of the support member to be received in or withdrawn from the recess, the tab means connected to the outer portion of the upper portion and extending downwardly and outwardly therefrom for manual movement to inward positions such that the flanges move resiliently about the flexure point when the tab means are manually moved inwardly, the flanges being adapted to securely engage the rim of the support member when the tab means are released; and a downwardly extending hanger portion connected to the upper portion.
Claim 2
Dependent Claim
190 words
A hanger device for attachment to a support member with a rim with two outwardly extending planar edges comprising: an integrally formed upper portion including two inwardly extending and opposing flanges having inner edges spaced apart from each other and means defining a flexure point for each of said opposing flanges; a recess formed within the upper portion with the inwardly extending flanges defining the upper border of the recess, the recess adapted to receive the rim of the support member; tab means for manually moving the flanges outwardly about the flexure point to enlarge the distance between the inner edges to allow the rim of the support member to be received in or withdrawn from the recess, the tab means connected to the outer portion of the upper portion and extending downwardly and outwardly therefrom for manual movement to inward positions such that the flanges move resiliently about the flexure point when the tab means are manually moved inwardly, the flanges being adapted to securely engage the rim of the support member when the tab means are released; and a downwardly extending hanger portion connected to the upper portion.
Claim 3
Dependent Claim
46 words
A hanger device defined in claim 1 wherein the flexure point defining means allows flexing of the flanges outwardly to a flexed position such that the inner edges of the flanges are a greater distance apart than the width of the lower rim of the beam.
Claim 4
Dependent Claim
77 words
A hanger device defined in claim 1 wherein the flexure point defining means includes at least one parallel groove recessed in the outer portions of the upper portion and defines thinner portions in the upper portion set between the two tab means, each groove being substantially parallel to the inner edges of the opposing flanges such that when the upper portion is flexed, substantially most of the flexure occurs in the thinner portions defined by the grooves.
Claim 5
Dependent Claim
44 words
A hanger device defined in claim 3 wherein the flexure point defining means includes two parallel grooves recessed in an upper surface of the upper portion and the hanger portion is connected to a central area of the upper portion between the two grooves.
Claim 6
Dependent Claim
21 words
A hanger device defined in claim 1 and further comprising means for limiting the extent of flexing of the upper portion.
Claim 7
Dependent Claim
44 words
A hanger device as defined in claim 5 wherein the preventing means includes outwardly extending flanges from the hanger portion which abuts the tab means when the tab means are in an inward position and prevents the tab means from being moved further inwardly.
Claim 8
Dependent Claim
17 words
A hanger device defined in claim 1 wherein the upper portion and hanger portion are integrally formed.
Claim 9
Dependent Claim
146 words
A hanger device for attachment to a support member with a rim with two outwardly extending planar edges comprising: an upper portion including two integrally formed and inwardly extending and opposing flanges having inner edges spaced apart from each other, the upper portion capable of flexing; a recess formed within the upper portion with the inwardly extending flanges defining the upper border of the recess, the recess adapted to receive the rim of the support member; means for flexing the flanges outwardly to enlarge the distance between the inner edges to allow the rim of the support member to be received or withdrawn from the recess; the flanges being resiliently biased to an inward position adopted to engage the rim of the support member; a downwardly extending hanger portion connected to the upper portion; and means for limiting the extent of flexing of the upper portion.
Claim 10
Dependent Claim
146 words
A hanger device for attachment to a support member with a rim with two outwardly extending planar edges comprising: an upper portion including two integrally formed and inwardly extending and opposing flanges having inner edges spaced apart from each other, the upper portion capable of flexing; a recess formed within the upper portion with the inwardly extending flanges defining the upper border of the recess, the recess adapted to receive the rim of the support member; means for flexing the flanges outwardly to enlarge the distance between the inner edges to allow the rim of the support member to be received or withdrawn from the recess; the flanges being resiliently biased to an inward position adopted to engage the rim of the support member; a downwardly extending hanger portion connected to the upper portion; and means for limiting the extent of flexing of the upper portion.
Claim 11
Dependent Claim
87 words
A hanger device as defined in claim 8 wherein the flexing means includes tab means connected to the outer portion of the upper portion and extending downwardly and outwardly therefrom for manual movement to an inward position such that the flanges move outwardly when the tab means are manually moved inwardly; and the limiting means includes outwardly extending flanges from the hanger portion which abut the tab means when the tab means are in an inward position and prevents the tab means from being moved further inwardly.
References Cited (Backward Citations)
US718545A
Cited
US862372A
Cited
GB369174A
Cited
GB369173A
Cited
US2954200A
Cited
CH401386A
Cited
US3618176A
Cited
FR2252773A5
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |