US3883285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously operating press for chipboards, fiberboards, or the like
Assignee: Constructiewerkhuizen de Mets NV
•
Filing: 1974-04-19
•
Granted: 1975-05-13
•
Expires: 1994-04-19
Abstract
Abstract A press for processing panels such as chipboard, fiberboards and the like which include endless steel belts in facing relationship along a portion of their travel paths for compressing chipboard or fiberboard material. Each of the endless steel belts surrounds a plate belt including a plurality of articulatedly connected plate members, which plate members apply pressing forces against the steel belts during the pressing operation. In order to avoid indentations in the finished panel material due to the junction lines at the plates of the plate belts, the present invention provides a plurality of rigid strips connected to the steel belts and extending transverse to the direction of travel of the steel belts. In order to accommodate thermal expansions and permit sufficient flexibility of the steel belts, the strips are attached by rivet means with radial play in all directions for sliding movement of the strips with respect to the steel belts. In one preferred embodiment, the plate belt is pressed outwardly against the steel belt by pressure rollers, while in another preferred embodiment, a chain link belt with a plurality of articulated plate members is provided for pressing against the plate belt. In this last-mentioned embodiment, the junction points of the chain belt and the plate belt are staggered with independent drive mechanisms to retain this staggered relationship so as to aid in keeping the plate belt rigidly and smoothly in contact during pressing operations. Preferred embodiments also include the spacer element for preventing contact of the facing steel belts, as well as additional conveyor belt systems and additional surrounding belts so as to prevent contact of at least one of the endless steel belts directly with the material forming the panels and the like.
Inventors
- 👤 Albert Demets
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:56
CPC Classifications
B; B30; B30B; B30B5/00; B30B5/04; B30B5/06
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
283 words
A press for processing panels, such as chipboard, fiberboard, and the like; said press comprising: a first plate belt including a plurality of belt plates articulated to one another, a second plate belt including a plurality of belt plates articulated to one another, guiding and moving means for guiding and moving said first and second plate belts with respective outer surfaces of said plate belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said plate belts such that material forming said panels can be conveyed by and compressed between said plate belts along said material pressing portion of said respective travel paths, a first movable continuous flexible band surrounding a portion of said first plate belt, a second movable continuous flexible band surrounding a portion of said second plate band, said first and second bands being interposed between said belts over said material pressing portion of the respective travel paths thereof for transferring pressing forces from said plate belts to the material forming said panels which is disposed between said first and second bands, and a plurality of strips mounted to said first band at the side thereof facing away from the second band when said bands are in facing relationship along said material pressing portion of their travel paths for avoiding production of markings and panels being processed along the junction areas of the belt plates of said first plate belt, said strips extending transverse to the travel direction of the respective band and being mounted to permit relative movement of said strip and said first band in the plane of the junction of said strips and said first band.
Claim 2
Dependent Claim
283 words
A press for processing panels, such as chipboard, fiberboard, and the like; said press comprising: a first plate belt including a plurality of belt plates articulated to one another, a second plate belt including a plurality of belt plates articulated to one another, guiding and moving means for guiding and moving said first and second plate belts with respective outer surfaces of said plate belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said plate belts such that material forming said panels can be conveyed by and compressed between said plate belts along said material pressing portion of said respective travel paths, a first movable continuous flexible band surrounding a portion of said first plate belt, a second movable continuous flexible band surrounding a portion of said second plate band, said first and second bands being interposed between said belts over said material pressing portion of the respective travel paths thereof for transferring pressing forces from said plate belts to the material forming said panels which is disposed between said first and second bands, and a plurality of strips mounted to said first band at the side thereof facing away from the second band when said bands are in facing relationship along said material pressing portion of their travel paths for avoiding production of markings and panels being processed along the junction areas of the belt plates of said first plate belt, said strips extending transverse to the travel direction of the respective band and being mounted to permit relative movement of said strip and said first band in the plane of the junction of said strips and said first band.
Claim 3
Dependent Claim
30 words
A press according to claim 1, wherein each of said plate belts is an endless belt which travels around respective spaced axles disposed horizontally and in parallel to one another.
Claim 4
Dependent Claim
26 words
A press according to claim 2, wherein each of said flexible bands is an endless steel band which surrounds a respective one of said plate belts.
Claim 5
Dependent Claim
46 words
A press according to claim 3, wherein said moving and guiding means include drivable pressure rolls disposed inside of the travel path of at least one of said plate belts for imparting plate belt driving forces as well as material pressing forces against said plate belt.
Claim 6
Dependent Claim
28 words
A press according to claim 4, wherein said belt plates, said flexible bands, and said strips are heat conductive for accoMmodating heating of the material forming said panels.
Claim 7
Dependent Claim
21 words
A press according to claim 5, wherein said strips are substantially shorter in the travel direction than are the belt plates.
Claim 8
Dependent Claim
127 words
A press according to claim 6, wherein said first and second plate belts include a plurality of belt plates articulatedly joined to one another by guide element means, the edges of said belt plates which extend at right angles to the travel direction of said belt plates including recess means and projection means which are trapezoidally shaped, said recess means and projection means including interengagable flange portion means such that during operation of the press the flange portion means of one of the recess means and projection means of one plate engage and support the flange portion means of the other of the recess means and projection means of the next adjacent plate over at least a portion of the respective travel paths of said plate belts.
Claim 9
Dependent Claim
127 words
A press according to claim 1, wherein said first and second plate belts include a plurality of belt plates articulatedly joined to one another by guide element means, the edges of said belt plates which extend at right angles to the travel direction of said belt plates including recess means and projection means which are trapezoidally shaped, said recess means and projection means including interengagable flange portion means such that during operation of the press the flange portion means of one of the recess means and projection means of one plate engage and support the flange portion means of the other of the recess means and projection means of the next adjacent plate over at least a portion of the respective travel paths of said plate belts.
Claim 10
Dependent Claim
91 words
A press according to claim 1, wherein said guiding and moving means includes a first plate chain having a plurality of chain plates articulated to one another and plate chain driving means for moving said first plate chain along a predetermined path with chain plates of said first plate chain in engagement with belt plates of said first plate belt, and wherein the junction places between the chain plates of the first plate chain are offset with respect to the junction places between the belt plates of the first plate belt.
Claim 11
Dependent Claim
70 words
A press according to claim 1, wherein heat insulating means are provided intermediate the strips and the belt plates which apply pressing forces to said strips when said first flexible band and first plate belt are moved together over said material pressing portion of their respective travel paths, and wherein means are provided for applying heat directly to said first band and strips without directly heating said first plate belt.
Claim 12
Dependent Claim
66 words
A press according to claim 1, wherein said strips are attached to said first band by rivets rigidly fixed to said first band, said strips being provided with bores having dimension greater than the radial dimensions of said rivets for accommodating free sliding movement of said strips on said first band in all directions in the plane of the junction of said first band and strips.
Claim 13
Dependent Claim
16 words
A press according to claim 10, wherein both of said bands are provided with said strips.
Claim 14
Dependent Claim
24 words
A press according to claim 10, wherein a pressure distribution layer consiting of elastic material is disposed between said strips and said first band.
Claim 15
Dependent Claim
16 words
A press according to claim 13, wherein the pressure distributing layer consists of an asbestos fabric.
Claim 16
Dependent Claim
61 words
A press according to claim 2, wherein said first band is an upper endless steel band encompassing said first plate belt and said second band is a lower endless steel band encompassing said second plate belt, and wherein the upper endless steel belt is encompassed by an endless belt guided with respect to this upper endless steel belt by guide means.
Claim 17
Dependent Claim
27 words
A press according to claim 15, wherein said endless belt encompassing said upper endless steel belt consists of one of stainless steel, synthetic resin, and the like.
Claim 18
Dependent Claim
85 words
A press according to claim 12, wherein each of said plAte belts is an endless belt which travels around respective spaced axles disposed horizontally and in parallel to one another, wherein said first band is an upper endless steel band encompassing said first plate belt and said second band is a lower endless steel band encompassing said second plate belt, and wherein the upper endless steel belt is encompassed by an endless belt guided with respect to this upper endless steel belt by guide means.
Claim 19
Dependent Claim
27 words
A press according to claim 17, wherein said endless belt encompassing said upper endless steel belt consists of one of stainless steel, synthetic resin, and the like.
Claim 20
Dependent Claim
70 words
A press according to claim 2, wherein said first band is an upper endless steel band encompassing said first plate belt and said second band is a lower endless steel band encompassing said second plate belt, and wherein spacer elements are attached to the upper endless steel band in the zones of the lateral edges thereof for preventing contact of said upper and lower endless steel bands during idling operations.
Claim 21
Dependent Claim
70 words
A press according to claim 15, wherein said first band is an upper endless steel band encompassing said first plate belt and said second band is a lower endless steel band encompassing said second plate belt, and wherein spacer elements are attached to the upper endless steel band in the zones of the lateral edges thereof for preventing contact of said upper and lower endless steel bands during idling operations.
Claim 22
Dependent Claim
70 words
A press according to claim 18, wherein said first band is an upper endless steel band encompassing said first plate belt and said second band is a lower endless steel band encompassing said second plate belt, and wherein spacer elements are attached to the upper endless steel band in the zones of the lateral edges thereof for preventing contact of said upper and lower endless steel bands during idling operations.
Claim 23
Dependent Claim
29 words
A press according to claim 19, wherein the spacer elements are fashioned as holders and guide means for an endless steel belt which encompasses the upper endless steel belt.
Claim 24
Dependent Claim
272 words
A press for processing panels, such as chipboards, fiberboards, and the like; said press comprising: a first plate belt including a plurality of belt plates articulated to one another, a second plate belt including a plurality of belt plates articulated to one another, guiding and moving means for guiding and moving said first and second plate belts with respective outer surfaces of said plate belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said plate belts such that material forming said panels can be conveyed by and compressed between said plate belts along said material pressing portion of said respective travel paths, a first movable continuous flexible band surrounding a portion of said first plate belt, and a second movable continuous flexible band surrounding a portion of said second plate band, said first and second bands being interposed between said belts over said material pressing portion of the respective travel paths thereof for transferring pressing forces from said plate belts to the material forming said panels which is disposed between said first and second bands, wherein said guiding and moving means includes a first plate chain having a plurality of chain plates articulated to one another and plate chain driving means for moving said first plate chain along a predetermined path with chain plates of said first plate chain in engagement with belt plates of said first plate belt, and wherein the junction places between the chain plates of the first plate chain are offset with respect to the junction places between the belt plates of the first plate belt.
Claim 25
Dependent Claim
272 words
A press for processing panels, such as chipboards, fiberboards, and the like; said press comprising: a first plate belt including a plurality of belt plates articulated to one another, a second plate belt including a plurality of belt plates articulated to one another, guiding and moving means for guiding and moving said first and second plate belts with respective outer surfaces of said plate belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said plate belts such that material forming said panels can be conveyed by and compressed between said plate belts along said material pressing portion of said respective travel paths, a first movable continuous flexible band surrounding a portion of said first plate belt, and a second movable continuous flexible band surrounding a portion of said second plate band, said first and second bands being interposed between said belts over said material pressing portion of the respective travel paths thereof for transferring pressing forces from said plate belts to the material forming said panels which is disposed between said first and second bands, wherein said guiding and moving means includes a first plate chain having a plurality of chain plates articulated to one another and plate chain driving means for moving said first plate chain along a predetermined path with chain plates of said first plate chain in engagement with belt plates of said first plate belt, and wherein the junction places between the chain plates of the first plate chain are offset with respect to the junction places between the belt plates of the first plate belt.
Claim 26
Dependent Claim
30 words
A press according to claim 23, wherein each of said plate belts is an endless belt which travels around respective spaced axles disposed horizontally and in parallel to one another.
Claim 27
Dependent Claim
26 words
A press according to claim 24, wherein each of said flexible bands iS an endless steel band which surrounds a respective one of said plate belts.
Claim 28
Dependent Claim
79 words
A press according to claim 25, wherein the plurality of strips are mounted to each of said first and second bands at the sides thereof facing away from one another when said bands are in facing relationship along said material pressing portion of their travel paths, said strips extending transverse to the travel direction of the respective band and being mounted to permit relative movement of said strips and said respective bands in the travel direction of said bands.
Claim 29
Dependent Claim
70 words
A press according to claim 26, wherein heat insulating means are provided intermediate the strips and the belt plates which apply pressing forces to said strips when said first flexible band and first plate belt are moved together over said material pressing portion of their respective travel paths, and wherein means are provided for applying heat directly to said first band and strips without directly heating said first plate belt.
Claim 30
Dependent Claim
24 words
A press according to claim 27, wherein a pressure distribution layer consisting of elastic material is disposed between said strips and said first band.
Claim 31
Dependent Claim
16 words
A press according to claim 28, wherein the pressure distributing layer consists of an asbestos fabric.
Claim 32
Dependent Claim
61 words
A press according to claim 24, wherein said first band is an upper endless steel band encompassing said first plate belt and said second band is a lower endless steel band encompassing said second plate belt, and wherein the upper endless steel belt is encompassed by an endless belt guided with respect to this upper endless steel belt by guide means.
Claim 33
Dependent Claim
27 words
A press according to claim 30, wherein said endless belt encompassing said upper endless steel belt consists of one of stainless steel, synthetic resin, and the like.
Claim 34
Dependent Claim
70 words
A press according to claim 31, wherein said first band is an upper endless steel band encompassing said first plate belt and said second band is a lower endless steel band encompassing said second plate belt, and wherein spacer elements are attached to the upper endless steel band in the zones of the lateral edges thereof for preventing contact of said upper and lower endless steel bands during idling operations.
Claim 35
Dependent Claim
29 words
A press according to claim 32, wherein the spacer elements are fashioned as holders and guide means for an endless steel belt which encompasses the upper endless steel belt.
References Cited (Backward Citations)
US2289250A
Cited
US2675053A
Cited
US3065500A
Cited
US3545370A
Cited
US3680476A
Cited
US3795470A
Cited
US3702584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |