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US4995591A
Expired / Lapsed
US
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Retaining lock for chain link fence slats
Assignee: Pexco LLC
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Filing: 1989-08-25
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Granted: 1991-02-26
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Expires: 2009-08-25
Abstract
Abstract In a chain link fencing employing slats inserted vertically through adjacent links into an open channel which is inserted horizontally through the lowermost or uppermost course of links, a means of locking the slats to the channel to prevent easy removal of the slats from the fencing. Each slat is manufactured with a notch near one end thereof, and the channel is manufactured with a continuous barb along each free edge, one of which will engage the notch on the slat when the slat is inserted perpendicularly into the channel. For ease of assembly, the end of each slat nearest the notch is beveled.
Inventors
- 👤 William D. Humphrey
- 👤 Harold Rothenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:46
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/02; E04H17/06; E04H17/066; B; B21; B21F; B21F29/00; B21F29/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
171 words
In chain link fencing employing slats inserted vertically through adjacent rows of fencing links, each slat being elongated and having a longitudinal dimension with spaced opposite ends, a width dimension and a thickness dimension less than the width dimension, a means for securing the slats within the fencing, comprising: a notch formed in each slat near one end thereof, the notch extending across the width dimension and partly through the thickness dimension; and a channel inserted through the fencing in a horizontal orientation to receive perpendicularly the ends of the slats having the notch formed nearby, the channel having inner surfaces and including a base portion and opposing walls, each of which has terminal edge portions spaced from said base portion, at least one of said terminal edge portions including an inwardly projecting barbed edge, the spacing between the respective terminal edge portions being less than said slat thickness dimension and said at least one barbed edge being engageable within the notch so as to lock the slat to the channel.
Claim 2
Dependent Claim
171 words
In chain link fencing employing slats inserted vertically through adjacent rows of fencing links, each slat being elongated and having a longitudinal dimension with spaced opposite ends, a width dimension and a thickness dimension less than the width dimension, a means for securing the slats within the fencing, comprising: a notch formed in each slat near one end thereof, the notch extending across the width dimension and partly through the thickness dimension; and a channel inserted through the fencing in a horizontal orientation to receive perpendicularly the ends of the slats having the notch formed nearby, the channel having inner surfaces and including a base portion and opposing walls, each of which has terminal edge portions spaced from said base portion, at least one of said terminal edge portions including an inwardly projecting barbed edge, the spacing between the respective terminal edge portions being less than said slat thickness dimension and said at least one barbed edge being engageable within the notch so as to lock the slat to the channel.
Claim 3
Dependent Claim
19 words
The securing means of claim 1 wherein the notch is angled toward said one end of the respective slat.
Claim 4
Dependent Claim
14 words
The securing means of claim 1 wherein the slats are of hollow tubular form.
Claim 5
Dependent Claim
16 words
The securing means of claim 1 wherein each said terminal edge portion includes a barbed edge.
Claim 6
Dependent Claim
47 words
The securing means of claim 4 wherein the distance between opposite inner surfaces of the channel at the base portion of the channel is greater than 0.315 inches (8.00 mm) and the distance between said barbed edges in a channel is less than 0.310 inches (7.87 mm).
Claim 7
Dependent Claim
41 words
The securing means of claim 4 wherein each slat has a plane surface opposite the notch and the other of said barbed edges is engageable with the plane surface when said at least one of the barbed edges engages the notch.
Claim 8
Dependent Claim
54 words
The securing means of claim 4 wherein the notch is angled toward said one end of the respective slat, wherein the slat has a plane surface opposite the notch and the other of said barbed edges is engageable with the plans surface when said at least one of the barbed edges engages the notch.
Claim 9
Dependent Claim
17 words
The securing means of claim 1 wherein the end of each slat nearest the notch is beveled.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |