Patent US4379376A successfully refreshed from Google Patents.
US4379376A
Expired / Lapsed
US
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Universal edge guard
Assignee: ADELL Corp A CORP OF TX
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Filing: 1981-11-23
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Granted: 1983-04-12
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Expires: 2001-11-23
Abstract
Abstract A universal edge guard comprises a generally U-shaped metal channel having inner and outer legs with the cross section of the channel being formed into a generally semi-circular base with beads at the ends of the inner and outer legs being inwardly offset. A pattern of notches is formed in the inner leg with the notches extending from the bead along the inner leg and into the semi-circular base terminating just slightly beyond the mid-point of the base. The pattern of notches has uniformly sized notches with the notches being equally spaced apart. The preferred pattern has the notches at about one-half inch spacing and the notches about three-sixteenths inch in width. The construction allows the edge guard to be contoured to the contour of an edge without the use of additional manufacturing procedures to conform the edge guard to the desired cross section. The edge guard may also be readily cut to length by severing at one of the notches. The preferred embodiment incorporates a vinyl insulating liner lining the interior of the channel and extending around the outside of the beads.
Inventors
- 👤 Robert Adell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:34
CPC Classifications
B; B60; B60R; B60R13/00; B60R13/04; B60R13/043; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24198
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
132 words
In an edge guard of the type comprising a metal strip formed into a generally U-shaped cross section having inner and outer legs and beads at the distal ends of the legs via which the edge guard is self-retained on the edge of an object when installed thereon, the improvement wherein the U-shaped cross section has a generally semi-circularly contoured base and includes inward offsets joining the ends of the base with each bead so that the beads are disposed in inwardly off-set relation to the diametrically opposite ends of the generally semi-circularly contoured base and including a pattern of notches spaced at intervals along the length of the inner leg, said notches extending from the distal end of the inner leg, along the inner leg, and into the generally semi-circular base.
Claim 2
Dependent Claim
132 words
In an edge guard of the type comprising a metal strip formed into a generally U-shaped cross section having inner and outer legs and beads at the distal ends of the legs via which the edge guard is self-retained on the edge of an object when installed thereon, the improvement wherein the U-shaped cross section has a generally semi-circularly contoured base and includes inward offsets joining the ends of the base with each bead so that the beads are disposed in inwardly off-set relation to the diametrically opposite ends of the generally semi-circularly contoured base and including a pattern of notches spaced at intervals along the length of the inner leg, said notches extending from the distal end of the inner leg, along the inner leg, and into the generally semi-circular base.
Claim 3
Dependent Claim
14 words
The improvement set forth in claim 1 wherein the notches are identical in shape.
Claim 4
Dependent Claim
14 words
The improvement set forth in claim 1 wherein the spacing between notches is uniform.
Claim 5
Dependent Claim
19 words
The improvement set forth in claim 1 wherein the notches extend just slightly beyond the midpoint of the base.
Claim 6
Dependent Claim
29 words
The improvement set forth in claim 4 wherein the notches have spaced parallel edges extending from the distal end of the inner leg and terminating in a curved edge.
Claim 7
Dependent Claim
31 words
The improvement set forth in claim 4 wherein the notches are located at approximately one-half inch intervals and the distance across each notch between the parallel edges is about three-sixteenths inch.
Claim 8
Dependent Claim
16 words
The improvement set forth in claim 1 wherein the beads are formed by being outwardly reversed.
Claim 9
Dependent Claim
12 words
The improvement set forth in claim 7 wherein the beads are closed.
Claim 10
Dependent Claim
46 words
The improvement set forth in claim 1 wherein the edge guard includes an insulating liner lining the interior of the U-shaped cross section to insulate the metal of the edge guard from the edge of an object on which the edge guard is to be installed.
Claim 11
Dependent Claim
24 words
The improvement set forth in claim 9 wherein the insulating liner is adhered in surface-to-surface contact with the interior of the U-shaped cross section.
Claim 12
Dependent Claim
82 words
The improvement set forth in claim 10 in which the insulating liner is adhered to the full width of one surface of the metal strip from which the metal edge guard is formed and the beads are formed by outwardly reversing the distal end margins of the strip so that the insulating liner covers the exterior portion of the beads to provide a band of insulation running lengthwise at the distal end of each leg on the exterior of the cross section.
Claim 13
Dependent Claim
23 words
The improvement set forth in claim 11 wherein the notches are formed after the insulating liner has been applied to the metal strip.
Claim 14
Dependent Claim
30 words
The improvement set forth in claim 1 wherein one side of the edge guard is symmetric with respect to the other side in a transverse cross section taken between notches.
Claim 15
Independent Claim
80 words
The method of making an edge guard of the type comprising a metal strip formed into a generally U-shaped cross section having inner and outer legs comprising forming a series of longitudinally spaced notches along one side of the metal strip and then roll forming the metal strip into the U-shaped cross section having a generally semi-circular base with the distal ends of the legs being provided with beads which are inwardly offset relative to the ends of the base.
Claim 16
Independent Claim
80 words
The method of making an edge guard of the type comprising a metal strip formed into a generally U-shaped cross section having inner and outer legs comprising forming a series of longitudinally spaced notches along one side of the metal strip and then roll forming the metal strip into the U-shaped cross section having a generally semi-circular base with the distal ends of the legs being provided with beads which are inwardly offset relative to the ends of the base.
Claim 17
Dependent Claim
44 words
The method set forth in claim 14 including the step of applying an insulating layer to the side of the strip which becomes the interior of the edge guard, the notches being formed in the insulating layer as well as in the metal strip.
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) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |