← Back to Patent Explorer
US4047703A Expired / Lapsed US ⏱️ 0.0 years remaining

Line rail construction

Assignee: NEF Systems Inc
•
Filing: 1976-06-14
•
Granted: 1977-09-13
•
Expires: 1996-06-14
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A rattle-free rail construction includes a plurality of vertical line posts, each having an H cross-sectional configuration defining vertical channels in the post. Each channel includes a pair of opposed, vertically extending arcuate grooves which are of the correct diameter to properly accept self-tapping screws. Another pair of opposed, vertically extending retention grooves are disposed in each channel, parallel and adjacent to the arcuate grooves. Horizontal bars of the railing construction are secured with the ends thereof in opposed channels of adjacent line posts, the bars being spaced apart in each channel by post inserts which snappingly engage the retention grooves in the channel. Double-sided foam tape is applied to the top and bottom ends of the horizontal bars, and the entire assembly is secured in a channel by joining a top subrail onto top of post by means of screws received into the top openings of the arcuate grooves.

Inventors

  • 👤 Robert H. Murdock

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 23:55
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/14; E04H17/1413; E04H17/1447; E04H17/1452; E04H17/1456; E04H17/1482; F; F16; F16B; F16B2200/00; F16B2200/10

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 113 words
A railing construction, comprising a plurality of line posts, each of said posts including a pair of channels disposed longitudinally therein, at least one railing bar secured with its ends disposed in opposed channels of adjacent line posts, a plurality of post inserts disposed within said channels for supporting and spacing said railing bars, means for securing said post inserts within said channels in the lateral direction, means for securing said post inserts and said railing bars in said channels in the longitudinal direction, and a plurality of resilient pads, each secured to the upper or lower surface of the portion of said railing bars extending into said channels of said line posts.
Claim 2
Dependent Claim 113 words
A railing construction, comprising a plurality of line posts, each of said posts including a pair of channels disposed longitudinally therein, at least one railing bar secured with its ends disposed in opposed channels of adjacent line posts, a plurality of post inserts disposed within said channels for supporting and spacing said railing bars, means for securing said post inserts within said channels in the lateral direction, means for securing said post inserts and said railing bars in said channels in the longitudinal direction, and a plurality of resilient pads, each secured to the upper or lower surface of the portion of said railing bars extending into said channels of said line posts.
Claim 3
Dependent Claim 34 words
The railing construction of claim 1, wherein said post inserts and said railing bars are assembled in successive stack fashion in said channels to a height greater than the height of said line posts.
Claim 4
Dependent Claim 29 words
The railing construction of claim 2, wherein said last mentioned means includes means for compressing said assembled stack to a height equal to the height of said line posts.
Claim 5
Dependent Claim 44 words
The railing construction of claim 3, wherein said means for compressing said assembled stack includes a sub rail joined in flush relationship to the top of said line posts, and screw means for securing said sub rail to said top of said line posts.
Claim 6
Dependent Claim 56 words
The railing construction of claim 1, wherein said means for securing said post inserts within said channels includes a first pair of grooves disposed in the opposed sides of each of said channels, said post inserts including means for cooperatively and resiliently engaging said first pair of grooves to retain said post inserts within said channel.
Claim 7
Dependent Claim 38 words
The railing construction of claim 1, wherein said last mentioned means includes a sub rail secured to the top of said line posts, and screw means for joining said sub rail to said top of said line posts.
Claim 8
Dependent Claim 22 words
The railing construction of claim 6, further including a top rail snappingly secured to said sub rail and covering said screw means.

References Cited (Backward Citations)

US2669434A Cited
US3195864A Cited
US3879017A Cited
US3858850A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-09-12 1981-03-14 1981-09-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-09-12 1985-03-14 1985-09-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-09-12 1989-03-14 1989-09-13 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag