Patent US3989398A successfully refreshed from Google Patents.
US3989398A
Expired / Lapsed
US
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Clip-on attachment members for structural steel joists
Assignee: Unimast Inc
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Filing: 1975-01-06
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Granted: 1976-11-02
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Expires: 1995-01-06
Abstract
Abstract A clip-on attachment member is disclosed characterized by a portion of one leg of the member being bent slightly out of the plane of the rest of the leg, thereby permitting that leg of the member to be clipped to a hollow structural member to facilitate attachment thereto.
Inventors
- 👤 Alan C. Wendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:23
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/26; E04B1/2604; E04B1/2612; F; F16; F16B; F16B7/00; F16B7/04; F16B7/044; F16B7/048; F16B7/0486; F16B9/00; F16B9/05; F16B9/052; F16B9/058; F16B2200/00; F16B2200/50; F16B2200/503; Y; Y10; Y10T; Y10T403/00; Y10T403/46
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
98 words
A clip-on hanger for use in mounting hollow metal joists perpendicular to headers and the like, said clip-on hanger comprising a U-shaped top support having a depending back plate depending from a portion thereof, said depending back plate having at opposing sides thereof perpendicularly outwardly extending side flanges with at least one of said side flanges having a central portion thereof slightly bent out of the plane of the remainder of the side flange thereby permitting the hanger to be hung over one structural member while the side flanges are clipped to another structural member for attachment thereto.
Claim 2
Dependent Claim
98 words
A clip-on hanger for use in mounting hollow metal joists perpendicular to headers and the like, said clip-on hanger comprising a U-shaped top support having a depending back plate depending from a portion thereof, said depending back plate having at opposing sides thereof perpendicularly outwardly extending side flanges with at least one of said side flanges having a central portion thereof slightly bent out of the plane of the remainder of the side flange thereby permitting the hanger to be hung over one structural member while the side flanges are clipped to another structural member for attachment thereto.
Claim 3
Dependent Claim
29 words
A clip-on hanger as in claim 1 wherein both side flanges have a central portion thereof slightly bent out of the plane of the remainder of the side flange.
References Cited (Backward Citations)
GB185694A
Cited
US1780707A
Cited
GB923119A
Cited
GB994701A
Cited
US3352071A
Cited
US3711137A
Cited
US3798865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |