Patent US4730432A successfully refreshed from Google Patents.
US4730432A
Expired / Lapsed
US
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Molding track for carpeting
Assignee: RAUMAUSSTATTUNG WILLI SCHAFER A CORP OF FED REP OF (WEST) GERMANY
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Filing: 1987-01-28
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Granted: 1988-03-15
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Expires: 2007-01-28
Abstract
Abstract The invention concerns a molding track for the installation of carpet molding trim. It possesses an asymmetrical two-lipped profile, one lip of which is fastened to the wall. The molding trim is fastened flush with the floor to the other lip, led upward around this lip, which is elastically prestressed in the direction of the wall, and clamped firmly. Electrical wiring can be installed subsequently in the hollow spaces provided for this purose. The profile can be manufactured of recycled material.
Inventors
- 👤 Willi Schafer
- 👤 Gunther Sepp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:19
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/04; H02G3/0425; E; E04; E04F; E04F19/00; E04F19/02; E04F19/04; E04F2019/0404; E04F2019/0422; E04F2019/044
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
210 words
A molding track for the installation of carpet trim for a carpet of a given thickness, comprising an asymmetric profile composed of an elastic material and having an upright front lip over which said carpet can be placed and folded; an upright rear lip spaced from and shorter than said front lip but having a height which is slightly more than half the height of said front lip; a floor having a width slightly greater than said thickness connecting bases of said lips and lying generally perpendicular thereto, rounded fillets being formed between said lips and said floor internally of said profile; means forming an anchor chamber on said rear lip of generally square cross section, of a width approximately equal to said thickness, and at a location generally between a middle and upper third of the height of said rear lip for receiving a fastener traversing said front lip in a region of contact between said front lip and said chamber, said rear lip being generally flat except for said anchor chamber, said front lip being resiliently biased toward surface engagement with said chamber in said region; and an overhang projecting by substantially half said thickness downwardly generally perpendicularly to said floor in a plane of said front lip.
Claim 2
Dependent Claim
210 words
A molding track for the installation of carpet trim for a carpet of a given thickness, comprising an asymmetric profile composed of an elastic material and having an upright front lip over which said carpet can be placed and folded; an upright rear lip spaced from and shorter than said front lip but having a height which is slightly more than half the height of said front lip; a floor having a width slightly greater than said thickness connecting bases of said lips and lying generally perpendicular thereto, rounded fillets being formed between said lips and said floor internally of said profile; means forming an anchor chamber on said rear lip of generally square cross section, of a width approximately equal to said thickness, and at a location generally between a middle and upper third of the height of said rear lip for receiving a fastener traversing said front lip in a region of contact between said front lip and said chamber, said rear lip being generally flat except for said anchor chamber, said front lip being resiliently biased toward surface engagement with said chamber in said region; and an overhang projecting by substantially half said thickness downwardly generally perpendicularly to said floor in a plane of said front lip.
Claim 3
Dependent Claim
16 words
The molding track defined in claim 1 wherein said profile is formed in a single piece.
Claim 4
Dependent Claim
20 words
The molding track defined in claim 1 wherein said profile is an extrusion of recycled plastic material containing a modifier.
Claim 5
Dependent Claim
40 words
The molding track defined in claim 1, further comprising adhesive strips on said rear lip exteriorly of said profile at an upper end and at a lower end of said rear lip, respectively, for adhering said profile to a wall.
Claim 6
Dependent Claim
59 words
The molding track defined in claim 1, further comprising a nail groove formed on an exterior surface of said front lip at a portion thereof opposite said region and at a location substantially on a level with the middle of said chamber for permitting nails, forming said fasteners, to be accurately driven through said front lip into said chamber.
Claim 7
Dependent Claim
32 words
The molding track defined in claim 5, further comprising an adhesive strip on an exterior surface of said front lip between said nail groove and a lower end of said front lip.
Claim 8
Dependent Claim
88 words
The molding track defined in claim 1 wherein said front lip is formed with a row of holes adapted to be traversed by said fasteners, at a portion of said front lip opposite said region, and at a location substantially on a level with the middle of said chamber, said holes being spaced apart by about 20 cm and having diameters slightly larger than diameters of heads of said fasteners, said chamber having a wall juxtaposed with said region and formed with conical depressions registering with said holes.
Claim 9
Dependent Claim
43 words
The molding track defined in claim 1 wherein the resilient bias of said front lip aqainst said chamber is induced by additional heating of an exterior surface of said front lip immediately upon said profile leaving an extruder in which it is formed.
Claim 10
Dependent Claim
43 words
The molding track defined in claim 1 wherein the resilient bias of said front lip against said chamber is induced by additional cooling of an interior surface of said front lip immediately upon said profile leaving an extruder in which it is formed
Claim 11
Dependent Claim
36 words
The molding track defined in claim 1 wherein said front lip has a free extremity remote from said wall slightly bent toward said rear lip and formed with a sharply convergent end edge ridge directed inwardly.
Claim 12
Dependent Claim
33 words
The molding track defined in claim 1 wherein said profile is formed between said chamber and said wall and between said lips with a channel extending along said track to receive electrical wiring.
Claim 13
Dependent Claim
44 words
The molding track defined in claim 1 wherein said front lip is formed as one part and said rear lip is formed as another part of a pair of separable parts having plug-and-socket formations enabling coupling of said parts, said formations forming said wall.
Claim 14
Dependent Claim
47 words
The molding track defined in claim 12 wherein said formations include a barb-forming plug formation at a lower end of said rear lip and a socket formation formed by a pair of clamping lips on said front lip, said clamping lips being engageable with said plug formation.
Claim 15
Dependent Claim
29 words
The molding track defined in claim 13 wherein said plug formation has convex protrusions on opposite sides thereof and said clamping lips have concave depressions complementarily receiving said protrusions.
Claim 16
Dependent Claim
22 words
The molding track defined in claim 12 wherein said resilient bias is generated by the interfitting of formations of said plug-and-socket formations.
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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) | 1991-03-15 | 1991-09-14 | 1992-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-15 | 1995-09-14 | 1996-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-15 | 1999-09-14 | 2000-03-15 | $7700.00 | Window Closed / Lapsed |