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US3907445A Expired / Lapsed US ⏱️ 0.0 years remaining

Self-aligning joist hanger for structural steel framing

Assignee: Unimast Inc
•
Filing: 1975-01-06
•
Granted: 1975-09-23
•
Expires: 1995-01-06
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Abstract

Abstract A hanger for mounting a hollow metal joist perpendicular to headers and the like is disclosed. The hanger has a U-shaped top flange for hanging the hanger over a header and the hanger also having a backplate with side flanges projected outward therefrom and with the side flanges each being divided from the backplate outward at a point intermediate to the top and bottom thereof with the upper portion of each of the two side flanges being spaced together in order that the hollow metal joist may rest on the upper portion of the side flanges while the joist is being attached to the remaining portion of at least one of the side flanges. The side flanges are not connected other than by the backplate thereby enabling them to accommodate any height joist.

Inventors

  • 👤 Alan C Wendt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 23:04
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/26; E04B1/2604; E04B1/2612; F; F16; F16B; F16B9/00; F16B9/05; F16B9/058; F16B2200/00; F16B2200/50; F16B2200/503

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 169 words
In a hanger for mounting hollow metal joists perpendicular to headers and the like, including a U-shaped top flange for hanging the hanger, and a backplate suspended from the hanger with side flanges projecting outward from the backplate for connection to a joist, the improvement comprising: the side flanges each divided from the backplate outward at a point intermediate to the top and bottom thereof thereby forming a spaced top and bottom portions of the side flanges, and with the distance between the top portions of the side flanges being less than the distance between the bottom portions of the side flanges, wherein said side flanges are unconnected except by the backplate to define a channel open at both ends thereby enabling them to accommodate any height joist, and whereby a joist to be attached to the side flanges is supported by the spaced together top portions of the side flanges while the joist is being attached to the remaining portion of at least one of the side flanges.
Claim 2
Dependent Claim 169 words
In a hanger for mounting hollow metal joists perpendicular to headers and the like, including a U-shaped top flange for hanging the hanger, and a backplate suspended from the hanger with side flanges projecting outward from the backplate for connection to a joist, the improvement comprising: the side flanges each divided from the backplate outward at a point intermediate to the top and bottom thereof thereby forming a spaced top and bottom portions of the side flanges, and with the distance between the top portions of the side flanges being less than the distance between the bottom portions of the side flanges, wherein said side flanges are unconnected except by the backplate to define a channel open at both ends thereby enabling them to accommodate any height joist, and whereby a joist to be attached to the side flanges is supported by the spaced together top portions of the side flanges while the joist is being attached to the remaining portion of at least one of the side flanges.
Claim 3
Dependent Claim 16 words
The improvement as in claim 1 wherein a central portion of each side flange is eliminated.

References Cited (Backward Citations)

US2700457A Cited
US3481635A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-09-22 1979-03-24 1979-09-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-09-22 1983-03-24 1983-09-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-09-22 1987-03-24 1987-09-23 $7700.00 Window Closed / Lapsed

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