Patent US4417865A successfully refreshed from Google Patents.
US4417865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously operating press
Assignee: MASCHINENFABRIK J DIEFFENBACHER GmbH CO
•
Filing: 1981-11-06
•
Granted: 1983-11-29
•
Expires: 2001-11-06
Abstract
Abstract The press contains a platen and a ram adjustably mounted with respect to the platen to define a press gap for receiving material. A first conveyor band is disposed around the platen and a second conveyor band is disposed around the ram. A plurality of rolls for supporting and guiding the first and second bands are mounted to the platen and ram, respectively. Countersupports are provided for the rolls. The countersupports comprise a plurality of change plates, each of which is capable of being mounted to and removed from a platen or ram. Each change plate includes a first rod mounted in a first level and connected in supporting relation with one of the rolls. A plurality of T-shaped web plates are connected to the first rod in the first level and to a pressure plate in a second level whereby counter-pressure from the material being pressed is transferred to the pressure plate.
Inventors
- 👤 Heinrich Pfeiffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:21
CPC Classifications
B; B30; B30B; B30B5/00; B30B5/04; B30B5/06; B30B5/065; B30B5/067; B30B15/00; B30B15/34
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
203 words
An apparatus for continuously receiving and pressing material for producing particleboard and fiberboard, comprising: (a) pressing means comprising a movable upper platen and a fixed lower platen; (b) a ram mounted to said upper platen to move said upper platen to define a press gap between said upper platen and said lower platen for receiving material to be pressed; (c) a first endless conveyor band disposed around said lower platen; (d) a second endless conveyor band disposed around said upper platen; (e) a plurality of rolls for supporting and guiding said first and second bands, respectively; and (f) support means for said rolls, comprising: a plurality of change plates, each of said change plates being removably mounted to said lower platen or said upper platen and including: a first rod mounted in a first level and connected in supporting relation with one of said rolls, a plurality of T-shaped web plates connected to said first rod in said first level and to a pressure plate in a second level, whereby material moved between said upper platen and said lower platen is subjected to pressure to form a compressed product and counter pressure from said material being pressed is transferred to said pressure plate.
Claim 2
Independent Claim
203 words
An apparatus for continuously receiving and pressing material for producing particleboard and fiberboard, comprising: (a) pressing means comprising a movable upper platen and a fixed lower platen; (b) a ram mounted to said upper platen to move said upper platen to define a press gap between said upper platen and said lower platen for receiving material to be pressed; (c) a first endless conveyor band disposed around said lower platen; (d) a second endless conveyor band disposed around said upper platen; (e) a plurality of rolls for supporting and guiding said first and second bands, respectively; and (f) support means for said rolls, comprising: a plurality of change plates, each of said change plates being removably mounted to said lower platen or said upper platen and including: a first rod mounted in a first level and connected in supporting relation with one of said rolls, a plurality of T-shaped web plates connected to said first rod in said first level and to a pressure plate in a second level, whereby material moved between said upper platen and said lower platen is subjected to pressure to form a compressed product and counter pressure from said material being pressed is transferred to said pressure plate.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 wherein said pressure plate is equipped with heating channels in the form of bores.
Claim 4
Dependent Claim
21 words
The apparatus of claim 1 wherein said pressure plate and a plurality of web plates are made of a single piece.
Claim 5
Independent Claim
39 words
The apparatus of claims 1 or 2 wherein said pressure plate is formed of a plurality of components and one of said web plates is formed as an integral unit with one of said components of said pressure plate.
Claim 6
Dependent Claim
32 words
The apparatus of claim 1 wherein each change plate further includes an insulating plate and a mounting plate, wherein said insulating plate is disposed between said mounting plate and said pressure plate.
Claim 7
Dependent Claim
21 words
The apparatus of claim 1 or 5 wherein each change plate contains a plurality of rolls received on said first rod.
Claim 8
Dependent Claim
24 words
The apparatus of claim 1 wherein said rod mounts a plurality of rolls and said rolls are spaced at unequal intervals along said rod.
Claim 9
Independent Claim
16 words
The apparatus of claims 1 or 7 wherein said T-shaped web plates have cutouts formed therein.
References Cited (Backward Citations)
US3851685A
Cited
US3942929A
Cited
US3926542A
Cited
US3883285A
Cited
US4128369A
Cited
US4216179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |