Patent US4805879A successfully refreshed from Google Patents.
US4805879A
Expired / Lapsed
US
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Hand railing assembly
Assignee: Speral Aluminium Inc
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Filing: 1987-12-09
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Granted: 1989-02-21
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Expires: 2007-12-09
Abstract
Abstract A hand railing assembly for balconies, stairways and the like is supplied to a building site in kit form and is assembled by snap lock connections that have positive stops for increased rigidity. The improvement to a hand railing assembly with a stop rail and a bottom rail secured in spaced apart parallel relationship by a plurality of spaced apart vertical pickets, comprises each of the vertical pickets having a substantially H-shaped cross section with curved flanges and a center web, the top and bottom rails each having a first member and a second member, the first member extending for the length of the railing assembly and having pairs of slots spaced apart along the length, the pairs of slots holding the flanges at the ends of the pickets, the second member positioned in opposing grooves in the first member having a snap lock connection to notches located in the flanges at the ends of the pickets, and a first positive stop for the end of each of the flanges, the web of each of the pickets being cut out at the end of the pickets to provide a second positive stop with the first member between slots in each of the pairs of slots.
Inventors
- 👤 Vittorio Spera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:54
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04F11/1842; E04F11/1844; E04F11/1851; E04F11/1853; E04F11/1817; E04F2011/1819; E04F2011/1821; E04F2011/1823; E04F2011/1825; E04F2011/1827
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
190 words
In a hand railing assembly with a top rail and a bottom rail secured in spaced apart parallel relationship by a plurality of spaced apart vertical pickets, the railing assembly being supported by a plurality of spaced apart vertical posts connected to the top rail, the improvement comprising each of the vertical pickets having a substantially H-shaped cross section with curved flanges and a center web, the top and bottom rails each having a first member and a second member, the first member extending for the length of the railing assembly and having pairs of slots spaced apart along the length, the pairs of slots holding the flanges at the end of the pickets, the second member positioned in opposing grooves in the first member having a snap lock connection to notches located in the flanges at the ends of the pickets, and a first positive stop for the end of each of the flanges, the web of each of the pickets being cut out at the ends of the pickets to provide a second positive stop with the first member between slots in each of the pairs of slots.
Claim 2
Dependent Claim
190 words
In a hand railing assembly with a top rail and a bottom rail secured in spaced apart parallel relationship by a plurality of spaced apart vertical pickets, the railing assembly being supported by a plurality of spaced apart vertical posts connected to the top rail, the improvement comprising each of the vertical pickets having a substantially H-shaped cross section with curved flanges and a center web, the top and bottom rails each having a first member and a second member, the first member extending for the length of the railing assembly and having pairs of slots spaced apart along the length, the pairs of slots holding the flanges at the end of the pickets, the second member positioned in opposing grooves in the first member having a snap lock connection to notches located in the flanges at the ends of the pickets, and a first positive stop for the end of each of the flanges, the web of each of the pickets being cut out at the ends of the pickets to provide a second positive stop with the first member between slots in each of the pairs of slots.
Claim 3
Dependent Claim
21 words
The railing assembly according to claim 1 including a cover member on the top rail, snap locked to the first member.
Claim 4
Dependent Claim
31 words
The railing assembly according to claim 1 wherein the snap lock connection comprises two flexible flanges with detents to engage in the notches located on the outside of the two flanges.
Claim 5
Dependent Claim
31 words
The railing assembly according to claim 1 wherein the snap lock connection comprises two flexible flanges with detents to engage in the notches located on the inside of the two flanges.
Claim 6
Dependent Claim
32 words
The railing assembly according to claim 1 wherein the snap lock connection comprises a flexible member with two detents to engage in the notches located on the inside of the two flanges.
Claim 7
Dependent Claim
35 words
The railing assembly according to claim 1 wherein the vertical posts have a snap lock connection to the top rail substantially similar to the connection between the vertical pickets and the top and bottom rail.
Claim 8
Dependent Claim
35 words
The railing assembly according to claim 1 including a cover member snap locked to the first member of the top and bottom rail, the cover member and first member together having a circular cross section.
Claim 9
Dependent Claim
26 words
The railing assembly according to claim 7 wherein the vertical posts having a circular cross section substantially the same size as the top and bottom rail.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |