US4365548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure application apparatus
Assignee: Theodor Hymmen KG
•
Filing: 1980-09-15
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Granted: 1982-12-28
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Expires: 2000-09-15
Abstract
Abstract In an apparatus for applying a surface pressure to progressive moving workpieces comprising at least one rotating pressure belt having a workpiece carrying surface and an opposed surface and means for applying pressure to said belt to cause said belt to apply pressure to said workpiece, said pressure application means comprising a sealing strip in sealing abutment with said opposed surface of said belt, said sealing strip together with said belt forming part of a pressure chamber into which a pressure medium is induced the improvement comprising the provision of a plurality of pressure chambers over the length and width of said belt in its workpiece carrying region.
Inventors
- 👤 Werner Pankoke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:55
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/168; B; B30; B30B; B30B5/00; B30B5/04; B30B5/06; B30B5/062
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
An apparatus for applying a surface pressure to progressively moving workpieces comprising: a plate member having a working surface; a plurality of pressure members secured to said plate member working surface, each pressure member having a peripheral outer frame defining an open ended pressure chamber; an inner frame slidably received in each said pressure member outer frame, each inner frame having a peripheral edge; a sealing strip affixed to and extending from the peripheral edge of each of said inner frames; an endless pressure belt rotating around said plate member, the belt having a workpiece engaging surface and an opposed surface, the sealing strip affixed to each of said pressure chambers slidably engaging the opposed surface of said belt; and means of applying a pressure medium to each said pressure chamber to thereby force said belt into pressure contact with moving workpieces.
Claim 2
Independent Claim
142 words
An apparatus for applying a surface pressure to progressively moving workpieces comprising: a plate member having a working surface; a plurality of pressure members secured to said plate member working surface, each pressure member having a peripheral outer frame defining an open ended pressure chamber; an inner frame slidably received in each said pressure member outer frame, each inner frame having a peripheral edge; a sealing strip affixed to and extending from the peripheral edge of each of said inner frames; an endless pressure belt rotating around said plate member, the belt having a workpiece engaging surface and an opposed surface, the sealing strip affixed to each of said pressure chambers slidably engaging the opposed surface of said belt; and means of applying a pressure medium to each said pressure chamber to thereby force said belt into pressure contact with moving workpieces.
Claim 3
Dependent Claim
24 words
An apparatus as recited in claim 1, wherein said pressure chambers overlap one another across the width of said belt in its workpiece-carrying region.
Claim 4
Dependent Claim
17 words
An apparatus as recited in claim 1, wherein said pressure chambers have a cross-section which is triangular.
Claim 5
Dependent Claim
36 words
An apparatus as recited in claim 3, wherein said cross-section is triangular, said triangles are right-angled triangles, the triangular pressure chambers being disposed so that the hypotenuses of adjacent pairs of triangles are adjacent one another.
Claim 6
Dependent Claim
30 words
An apparatus as recited in claim 1, wherein said pressure chambers are displaceable in a direction at rights angles to the longitudinal direction of movement of said pressure application belt.
Claim 7
Dependent Claim
26 words
An apparatus as recited in claim 1, wherein said outer frame and said inner frame jointly define a space, a resilient sealing member spanning said space.
Claim 8
Dependent Claim
39 words
An apparatus as recited in claim 1, additionally comprising screw means, said screw means connecting said outer frame to said pressure plate, said screw means extending concentrically to said outer frame and having a centrally disposed bore extending therethrough.
Claim 9
Dependent Claim
16 words
An apparatus as in claim 1 wherein said pressure chambers have a cross-section which is oval.
Claim 10
Dependent Claim
16 words
An apparatus as in claim 1 wherein said pressure chambers have a cross-section which is circular.
Claim 11
Dependent Claim
20 words
An apparatus as in claim 1 wherein said pressure chambers have a cross-section which is elongated rectangular with radiused ends.
References Cited (Backward Citations)
US2135763A
Cited
US3340795A
Cited
US3587451A
Cited
US3748225A
Cited
DE2114736A1
Cited
US3970515A
Cited
US4053276A
Cited
US4025272A
Cited
US4193342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |