Patent US2864040A successfully refreshed from Google Patents.
Patent US4033709A successfully refreshed from Google Patents.
US4033709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding apparatus for ribbed product
Assignee: Karl Kroyer St Annes Ltd
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Filing: 1975-07-07
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Granted: 1977-07-05
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Expires: 1995-07-07
Abstract
Abstract This invention concerns apparatus for moulding ribs, ridges, studs or other upstanding projections on a mouldable material and although not so restricted it will hereafter be described with reference to its use on apparatus for moulding dry formed fibrous material.
Inventors
- 👤 Karl Kristian Kobs Kroyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:28
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/22; B29C43/222; B29C43/32; B29C43/44; B29C43/48; B29C59/00; B29C59/02; B29C59/04; Y; Y10; Y10S; Y10S425/00; Y10S425/044
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
70 words
Apparatus for moulding ribs, ridges, studs and other upstanding projections on a mouldable material comprising a mould having an endless shaping surface and having a plurality of flexible protrusions defining therebetween at least one moulding cavity defined by the adjacent faces of the protrusions, the adjacent faces being movable when the protrusions are deformed by pressure for reducing the size of the cavity and for compacting any mouldable material therein.
Claim 2
Dependent Claim
70 words
Apparatus for moulding ribs, ridges, studs and other upstanding projections on a mouldable material comprising a mould having an endless shaping surface and having a plurality of flexible protrusions defining therebetween at least one moulding cavity defined by the adjacent faces of the protrusions, the adjacent faces being movable when the protrusions are deformed by pressure for reducing the size of the cavity and for compacting any mouldable material therein.
Claim 3
Dependent Claim
39 words
Apparatus as claimed in claim 1 wherein the endless shaping surface is provided by the surface of a roller having said plurality of flexible protrusions thereon for providing a plurality of projections on an elongate sheet of mouldable material.
Claim 4
Dependent Claim
13 words
Apparatus as claimed in claim 2 wherein the flexible protrusions are of rubber.
Claim 5
Dependent Claim
38 words
Apparatus as claimed in claim 2 wherein the roller includes a vacuum cylinder having a vacuum source and the base of each moulding cavity is in communication with said vacuum source to draw mouldable material into the cavity.
Claim 6
Dependent Claim
23 words
Apparatus as claimed in claim 2 wherein the protrusions are axially spaced across the roller to provide longitudinal ribs on the elongate sheet.
Claim 7
Dependent Claim
23 words
Apparatus as claimed in claim 2 wherein the protrusions are longitudinally spaced around the roller to provide lateral ribs on the elongate sheet.
Claim 8
Dependent Claim
40 words
Apparatus as claimed in claim 1 wherein the endless shaping surface is provided by the surface of an endless belt having said plurality of rubber protrusions thereon to provide a plurality of projections on an elongate sheet of mouldable material.
Claim 9
Dependent Claim
43 words
Apparatus as claimed in claim 7 wherein the endless belt is foraminous and is associated with a vacuum cylinder having a vacuum source and the base of each mould being in communication with the vacuum source to draw mouldable material into the cavity.
Claim 10
Dependent Claim
19 words
Apparatus as claimed in claim 7 wherein the protrusions are longitudinally spaced on the belt to provide longitudinal ribs.
Claim 11
Dependent Claim
19 words
Apparatus as claimed in claim 7 wherein the protrusions are transversely spaced on the belt to provide transverse ribs.
Claim 12
Dependent Claim
34 words
Apparatus as claimed in claim 1 wherein the protrusions diverge from the crests to the roots to define tapering channels therebetween, the sides of said protrusions being deformable to define parallel sided moulding cavities.
Claim 13
Dependent Claim
14 words
Apparatus as claimed in claim 10 wherein the crests of the protrusions are convex.
Claim 14
Dependent Claim
35 words
Apparatus as claimed in claim 12 including a pressure cylinder defining a pressure nip with the roller, means for feeding mouldable material to said nip, and means for reeling the ribbed mouldable material so formed.
Claim 15
Dependent Claim
36 words
Apparatus as claimed in claim 7 including a pressure cylinder defining a pressure nip with the belt, means for feeding the mouldable material to said nip, and means for reeling the ribbed mouldable material so formed.
Claim 16
Dependent Claim
26 words
Apparatus as claimed in claim 1 including means for laminating a liner sheet of material to the crests of the ribs to provide a composite board.
References Cited (Backward Citations)
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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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |