US3784340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for continuous manufacturing of chip boards
Assignee: Individual
•
Filing: 1972-08-15
•
Granted: 1974-01-08
•
Expires: 1992-08-15
Abstract
Abstract Machine for continuous manufacturing of chip boards, consisting of a strewing station for strewing chips to form a mat on a moving surface and a continuous action press for pressing the chip mat in the press gap between two moving surfaces, at least one of which consists of an endless belt, most appropriately a steel band, which is loaded by the aid of a pressure chamber to be urged in direction against the chip mat. The chip strewing station has been formed to constitute a chamber provided with a closable feed opening, which chamber directly communicates with the press gap provided with marginal seals and into which chamber pressure fluid can be introduced under a pressure which at the most equals the pressure prevailing in the pressure chamber.
Inventors
- 👤 I Kerttula
- 👤 P Jaatinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:52
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/24; B30; B30B; B30B5/00; B30B5/04; B30B5/06; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
Improvement in a continuous action machine for manufacturing a chip boards consisting of a strewing station for strewing chips to form a mat on a moving surface and of a continuous action press for pressing the chip mat between two moving surfaces in a press gap, at least one of which moving surfaces consists of an endless band, most appropriately a steel band, which is loaded with the aid of a pressure chamber to be urged against the chip mat to be pressed, the improvement comprising the chip strewing station has been formed to constitute a chamber provided with a closable feed opening, which chamber directly communicates with the press gap provided with marginal seals and into which chamber pressure fluid can be introduced under a pressure which at the most equals the pressure prevailing in the pressure chamber.
Claim 2
Dependent Claim
139 words
Improvement in a continuous action machine for manufacturing a chip boards consisting of a strewing station for strewing chips to form a mat on a moving surface and of a continuous action press for pressing the chip mat between two moving surfaces in a press gap, at least one of which moving surfaces consists of an endless band, most appropriately a steel band, which is loaded with the aid of a pressure chamber to be urged against the chip mat to be pressed, the improvement comprising the chip strewing station has been formed to constitute a chamber provided with a closable feed opening, which chamber directly communicates with the press gap provided with marginal seals and into which chamber pressure fluid can be introduced under a pressure which at the most equals the pressure prevailing in the pressure chamber.
Claim 3
Dependent Claim
54 words
Machine for manufacturing chip boards according to claim 1, characterized in that the feed aperture of the strewing station has been provided with two consecutive, tightly closing hatches, which are alternatingly opened, whereby the pressure in the strewing chamber cannot escape when chip material is fed through the feed aperture into the strewing chamber.
Claim 4
Dependent Claim
53 words
Machine for manufacturing chip boards according to claim 1, characterized in that on both sides of the press gap in the marginal seals there are over the entire length of the press gap at fixed intervals vent pipes provided with valves for regulating the pressure in the press gap at its various points.
Claim 5
Dependent Claim
31 words
MAchine for manufacturing chip boards according to claim 1, characerized in that the pressure chamber has been divided into a plurality of consecutive chambers in which pressures of different height prevail.
Claim 6
Dependent Claim
27 words
Machine for manufacturing chip boards according to claim 1, characterized in that opposite to the end walls and partitions of the chambers drag presses have been placed.
Claim 7
Dependent Claim
47 words
Machine for manufacturing chip boards according to claim 1, characterized in that the valves of the vent pipes in the marginal seals of the press gap are controlled by sensors touching the endless band and which measure the thickness of the chip mat in the press gap.
References Cited (Backward Citations)
US2310457A
Cited
US3258513A
Cited
US3383441A
Cited
US3640660A
Cited
US3619450A
Cited
US3734668A
Cited
US3736082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |