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US4547994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal and plastic edge guard
Assignee: Adell Corp
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Filing: 1983-12-13
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Granted: 1985-10-22
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Expires: 2003-12-13
Abstract
Abstract A plastic and metal edge guard as fabricated by extruding plastic onto metal. The extrusion may take place onto a flat metal strip with the plastic and metal subsequently being formed into a desired cross sectional shape for the edge guard. Several embodiments are disclosed. In one embodiment the plastic is provided with a tapered shape so that when the plastic and metal are formed into the U-shaped cross section the plastic taper narrows toward the distal end of the legs to produce a feathering of the plastic. The plastic may cover either the entire surface of one side of the strip or selectively leave one or both marginal edges uncovered on the same side of the strip which can be formed into beads.
Inventors
- 👤 Robert Adell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:10
CPC Classifications
B; B60; B60R; B60R13/00; B60R13/04; B60R13/043
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A method of making an edge guard of generally U-shaped cross section having inner and outer legs joined by a generally semi-circular base which comprises passing a flat metal strip through an extruder, extruding plastic onto said strip as it passes through the extruder such that the plastic is applied to produce a tapered cross sectional shape on one face of the strip which is thicker at a central region and narrows toward the side edges of the strip and then forming the strip into the U-shaped cross section such that the taper of the plastic narrows in a direction toward the distal end of each leg and the plastic is disposed on the interior of the U-shaped cross section.
Claim 2
Independent Claim
120 words
A method of making an edge guard of generally U-shaped cross section having inner and outer legs joined by a generally semi-circular base which comprises passing a flat metal strip through an extruder, extruding plastic onto said strip as it passes through the extruder such that the plastic is applied to produce a tapered cross sectional shape on one face of the strip which is thicker at a central region and narrows toward the side edges of the strip and then forming the strip into the U-shaped cross section such that the taper of the plastic narrows in a direction toward the distal end of each leg and the plastic is disposed on the interior of the U-shaped cross section.
Claim 3
Dependent Claim
9 words
A product made by the method of claim 1.
Claim 4
Independent Claim
117 words
A method of making an edge guard of a generally U-shaped cross section having inner and outer legs joined by a generally semi-circular base which comprises passing a flat metal strip through an extruder, extruding plastic onto said strip as it passes through the extruder such that the plastic is applied to produce a tapered cross sectional shape extending between at least one of the side edges of the strip and a central region of the strip, and then forming the strip into the U-shaped cross section such that the taper of the plastic extends at least along the interior of the length of one leg between the distal end of the leg and the semi-circular base.
Claim 5
Independent Claim
117 words
A method of making an edge guard of a generally U-shaped cross section having inner and outer legs joined by a generally semi-circular base which comprises passing a flat metal strip through an extruder, extruding plastic onto said strip as it passes through the extruder such that the plastic is applied to produce a tapered cross sectional shape extending between at least one of the side edges of the strip and a central region of the strip, and then forming the strip into the U-shaped cross section such that the taper of the plastic extends at least along the interior of the length of one leg between the distal end of the leg and the semi-circular base.
Claim 6
Dependent Claim
9 words
A product made by the method of claim 3.
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) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |