Patent US5017010A successfully refreshed from Google Patents.
Patent US3887318A successfully refreshed from Google Patents.
US3887318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously operating press
Assignee: Bison Werke Baehre and Greten GmbH and Co KG
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Filing: 1973-03-08
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Granted: 1975-06-03
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Expires: 1993-03-08
Abstract
Abstract A continuously operating press utilizing facing endless belts for compressing chip material into chipboards, fibreboards and the like. Each of the belts is constructed as an endless belt formed of a plurality of heatable planar chain links. For conveying and directly engaging the chip material, corresponding endless steel bands envelope the chain belts. Gas flame burners are arranged in casings for directly heating a portion of the chain run at a position spaced from the engagement with the chip material. Each of the casings also include burner exhaust gas conducting channels for conducting the hot exhaust gases adjacent portions of the chain which are not impinged upon by the flame at a particular given time. Also, conduit means for the flame burner exhaust gases are provided for conducting the exhaust gases to heat the endless steel bands by way of Z-shaped channeled housings arranged at a position spaced from the casings for the flame burners and immediately adjacent the steel bands.
Inventors
- 👤 Albert Demets
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:58
CPC Classifications
B; B30; B30B; B30B5/00; B30B5/04; B30B5/06; B30B5/065; B30B5/067; B27; B27N; B27N3/00; B27N3/08; B27N3/24; B30B15/00; B30B15/34
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
178 words
A press for producing boards such as chipboards, fibreboards, and the like; said press comprising: a first movable endless belt formed of heatable belt parts, a second movable endless belt formed of heatable belt parts, guiding and moving means for guiding and moving said first and second belts with respective outer surfaces of said belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said belts such that material forming said boards can be conveyed by and compressed between said belts along said material pressing portion of said respective travel paths, and heating means for heating at least one of said first and second belts, said heating means including at least one flame burner directing a heating flame against a portion of at least one of said belts and burner exhaust gas conducting means for directing exhaust gases from said at least one flame burner against portions of at least one of said belts which are spaced from said portion being directly heated by said heating flame.
Claim 2
Dependent Claim
178 words
A press for producing boards such as chipboards, fibreboards, and the like; said press comprising: a first movable endless belt formed of heatable belt parts, a second movable endless belt formed of heatable belt parts, guiding and moving means for guiding and moving said first and second belts with respective outer surfaces of said belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said belts such that material forming said boards can be conveyed by and compressed between said belts along said material pressing portion of said respective travel paths, and heating means for heating at least one of said first and second belts, said heating means including at least one flame burner directing a heating flame against a portion of at least one of said belts and burner exhaust gas conducting means for directing exhaust gases from said at least one flame burner against portions of at least one of said belts which are spaced from said portion being directly heated by said heating flame.
Claim 3
Dependent Claim
178 words
A press for producing boards such as chipboards, fibreboards, and the like; said press comprising: a first movable endless belt formed of heatable belt parts, a second movable endless belt formed of heatable belt parts, guiding and moving means for guiding and moving said first and second belts with respective outer surfaces of said belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said belts such that material forming said boards can be conveyed by and compressed between said belts along said material pressing portion of said respective travel paths, and heating means for heating at least one of said first and second belts, said heating means including at least one flame burner directing a heating flame against a portion of at least one of said belts and burner exhaust gas conducting means for directing exhaust gases from said at least one flame burner against portions of at least one of said belts which are spaced from said portion being directly heated by said heating flame.
Claim 4
Dependent Claim
178 words
A press for producing boards such as chipboards, fibreboards, and the like; said press comprising: a first movable endless belt formed of heatable belt parts, a second movable endless belt formed of heatable belt parts, guiding and moving means for guiding and moving said first and second belts with respective outer surfaces of said belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said belts such that material forming said boards can be conveyed by and compressed between said belts along said material pressing portion of said respective travel paths, and heating means for heating at least one of said first and second belts, said heating means including at least one flame burner directing a heating flame against a portion of at least one of said belts and burner exhaust gas conducting means for directing exhaust gases from said at least one flame burner against portions of at least one of said belts which are spaced from said portion being directly heated by said heating flame.
Claim 5
Dependent Claim
69 words
A press according to claim 1, further comprising a first movable flexible band enclosing a portion of and movable with said first belt and a second movable flexible band enclosing a portion of and movable with said second belt, wherein said first and second bands are interposed between said belts over said material pressing portion of the respective travel paths thereof to directly engage said material during pressing operations.
Claim 6
Dependent Claim
149 words
A press according to claim 2, wherein said first belt is an upper belt, the respective material pressing portion of the travel path of said first belt corresponding to a lower run of said first belt, the travel path of said first Belt including an upper run extending above and in the opposite direction of said lower run, wherein said second belt is a lower belt, the respective material pressing portion of the travel path of said second belt corresponding to an upper run of said second belt, the travel path of said second belt including a lower run extending below and in the opposite direction of said upper run of said second belt, and wherein said heating means includes respective flame burners directing heating flames against a part of the upper run of said upper belt and against a part of the lower run of said lower belt.
Claim 7
Dependent Claim
71 words
A press according to claim 3, wherein the respective heatable belt parts of each of said belts are relatively rigid heatable plate members that are articulated to one another to form said belts, and wherein said guiding amd moving means include a pair of horizontal and parallel shafts spaced from one another for each belt, said belts being movably guided around respective reversing pulleys rotatable about respective axes of said shafts.
Claim 8
Dependent Claim
61 words
A press according to claim 4, wherein said heating means includes at least one relatively fixed burner casing positioned adjacent each of said upper run of said upper belt and said lower run of said lower belt, each of said casings containing a plurality of said flame burners and a suction pipe forming part of said burner exhaust gas conducting means.
Claim 9
Dependent Claim
42 words
A press according to claim 5, wherein each flame burner includes a chamber surrounded by a cooling jacket, said chamber having slots at the top, a supply pipe for a gas-air mixture having a plurality of holes being located in said slots.
Claim 10
Dependent Claim
33 words
A press according to claim 5, wherein the flame burners in each casing extend parallel to one another and transverse to the direction of movement of the respective belt being directly heated thereby.
Claim 11
Dependent Claim
33 words
A press according to claim 6, wherein the flame burners in each casing extend parallel to one another and transverse to the direction of movement of the respective belt being directly heated thereby.
Claim 12
Dependent Claim
26 words
A press according to claim 5, wherein each casing is subdivided into two separate chambers intercommunicated with one another only at the ends of the casings.
Claim 13
Dependent Claim
38 words
A press according to claim 9, wherein at least one of said casings surrounds at least a portion of the associated belt, and wherein said associated belt and further sealing means form a partition between said two chambers.
Claim 14
Dependent Claim
55 words
A press according to claim 10, wherein said sealing means extend along respective opposite sides of said associated belt to positions spaced from opposite ends of said at least one of said casings, and wherein said suction pipe is arranged in a central area of the upper of the two chambers in said respective casing.
Claim 15
Dependent Claim
51 words
A press according to claim 5, wherein said first and second bands are endless steel bands which envelop the respective associated belts, and wherein said heating means includes means for directing exhaust gases from said burners directly against at least one of said bands to heat said at least one band.
Claim 16
Dependent Claim
72 words
A press according to claim 12, wherein an exhaust gas heating housing is positioned adjacent the travel path of one of said bands, said housing having partitions forming a plurality of zig-zag channels interconnected with one another and with conduit means leading to an exhaust gas outlet of at least one of said casings, the burner exhaust gases being conducted by said conduit means to said housing to heat said respective band.
Claim 17
Dependent Claim
33 words
A press according to claim 13, wherein said conduit means opens into said housing at a portion of said housing which is closest to said material pressing portion of said respective travel paths.
Claim 18
Dependent Claim
20 words
A press according to claim 14, wherein the length of each partition is less than the width of the housing.
Claim 19
Dependent Claim
42 words
A press according to claim 13, wherein said heating housing is positioned immediately below the upper run of the second lower band, and wherein said conduit means extend from a caSing containing burners for heating the upper run of said upper belt.
Claim 20
Dependent Claim
32 words
A press according to claim 16, wherein said second lower band serves as a conveyor belt for conveying material to be pressed to said material pressing portion of said respective travel paths.
Claim 21
Dependent Claim
29 words
A press according to claim 5, wherein said reversing pulleys are of polygonal shape with sides thereof corresponding in length to respective articulated heatable plate members forming said belts.
Claim 22
Dependent Claim
24 words
A press according to claim 5, wherein movable press rollers are engageable from above with said upper belt along said material compressing travel path.
Claim 23
Dependent Claim
47 words
A press according to claim 1, wherein each of said at least one flame burners includes a chamber surrounded by a cooling jacket, said chamber having slots at the top, a supply pipe for a gas-air mixture having a plurality of holes being located in said slots.
Claim 24
Dependent Claim
32 words
A press according to claim 1, wherein said press is a continuously operating press with said guiding and moving means including means for continuously guiding and moving said first and second belts.
Claim 25
Dependent Claim
121 words
A press according to claim 1, further comprising a first movable flexible band extending adjacent to and movable with said first belt, wherein said first band is interposed between said belts over said material pressing portion of the respective travel paths thereof to directly engage said material during pressing operations, wherein an exhaust gas heating housing is positioned adjacent the travel path of said first band, said housing having partitions forming a plurality of zig-zag channels interconnected with one another and with conduit means leading to an exhaust gas outlet of at least one burner casing of said at least one flame burner, the burner exhaust gases being conducted by said conduit means to said housing to heat said first band.
Claim 26
Dependent Claim
46 words
A press according to claim 1, wherein all of said at least one flame burners are located so as to direct a heating flame against said portions of said belts only when said portions are spaced from said material pressing portion of their respective travel paths.
Claim 27
Dependent Claim
153 words
A press according to claim 1, wherein said first belt is an upper belt, the respective material pressing portion of the travel path of said first belt corresponding to a lower run of said first belt, the travel path of said first belt including an upper run extending above and in the opposite direction of said lower run, wherein said second belt is a lower belt, the respective material pressing portion of the travel path of said second belt corresponding to an upper run of said second belt, the travel path of said second belt including a lower run extending below and in the opposite direction of said upper run of said second belt, and wherein all of said at least one flame burners are positioned for directing heating flames against a part of the upper run of said upper belt and against a part of the lower run of said lower belt.
Claim 28
Dependent Claim
175 words
A press for producing boards such as chipboards, fibreboards, and the like; said press comprising: a first movable endless belt formed of heatable belt parts, a second movable endless belt formed of heatable belt parts, guiding and moving means for guiding and moving said first and second belts with respective outer surfaces of said belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said belts such that material forming said boards can be conveyed by and compressed between said belts along said material pressing portion of said respective travel paths, and heating means for heating at least one of said first and second belts, said heating means including at least one flame burner directing a heating flame against a portion of at least one of said belts, wherein each flame burner includes a chamber surrounded by a cooling jacket, said chamber having slots at the top, a supply pipe for a gas-air mixture having a plurality of holes being locateD in said slots.
Claim 29
Dependent Claim
175 words
A press for producing boards such as chipboards, fibreboards, and the like; said press comprising: a first movable endless belt formed of heatable belt parts, a second movable endless belt formed of heatable belt parts, guiding and moving means for guiding and moving said first and second belts with respective outer surfaces of said belts in facing relationship and moving in the same direction over a material pressing portion of the respective travel paths of said belts such that material forming said boards can be conveyed by and compressed between said belts along said material pressing portion of said respective travel paths, and heating means for heating at least one of said first and second belts, said heating means including at least one flame burner directing a heating flame against a portion of at least one of said belts, wherein each flame burner includes a chamber surrounded by a cooling jacket, said chamber having slots at the top, a supply pipe for a gas-air mixture having a plurality of holes being locateD in said slots.
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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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |