US3596880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railing system
Assignee: American Metal Products Co
•
Filing: 1968-12-17
•
Granted: 1971-08-03
•
Expires: 1988-12-17
Abstract
Abstract This disclosure pertains to railing systems comprised of extruded modular units which may be connected to form various lateral rail and post members. A first composite type construction is assembled by means of threaded fasteners. A second type is assembled by means of welded connections. In both construction types the connection means are concealed from view by means of dressing plates.
Inventors
- 👤 Morton Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:17
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
A railing system comprising a hollow inverted U-shaped rail having a bight portion connecting parallel spaced arms, elongated flanges extending confrontingly inwardly along the length of the rail arms, a tubular post generally disposed in interposing spaced relation to the arms of the rail, the flanges embracing the post and being welded thereto to form a secure joint between post and rail, a channel-shaped dressing plate being positioned between the arms and in flush relation to the lower outward end of the arms, the inner edge of the plate abutting the rail flanges, an intermediate point on the plate including an aperture to allow passage of the post therethrough, and fastening means for securing the plate to the flanges whereby the plate encloses the bottom of the rail and conceals the welded joint between post and rail.
Claim 2
Dependent Claim
137 words
A railing system comprising a hollow inverted U-shaped rail having a bight portion connecting parallel spaced arms, elongated flanges extending confrontingly inwardly along the length of the rail arms, a tubular post generally disposed in interposing spaced relation to the arms of the rail, the flanges embracing the post and being welded thereto to form a secure joint between post and rail, a channel-shaped dressing plate being positioned between the arms and in flush relation to the lower outward end of the arms, the inner edge of the plate abutting the rail flanges, an intermediate point on the plate including an aperture to allow passage of the post therethrough, and fastening means for securing the plate to the flanges whereby the plate encloses the bottom of the rail and conceals the welded joint between post and rail.
Claim 3
Dependent Claim
35 words
The structure of claim 1 wherein an aperture is formed in the rail bight portion and in vertical alignment with the aperture in the plate for allowing extension of the post through the aligned apertures.
Claim 4
Dependent Claim
37 words
The structure of claim 2 wherein an aperture is formed in the rail bight portion and in vertical offset relation to the aperture in the plate for allowing angular extension of the post through the offset apertures.
References Cited (Backward Citations)
US2771276A
Cited
US2808233A
Cited
US3037593A
Cited
FR1319369A
Cited
GB964048A
Cited
FR1383621A
Cited
US3305221A
Cited
US3385567A
Cited
FR1475039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |