US3604344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of smoothing surfaces of blanks of fiber mass and a smoothing machine to carry the method into effect
Assignee: Individual
•
Filing: 1969-09-16
•
Granted: 1971-09-14
•
Expires: 1989-09-16
Abstract
Abstract A method and a machine for smoothing surfaces of blanks of fiber mass by passing the blanks beneath a smoothing roller by means of a conveyor while keeping the smoothing roller at an elevated temperature and driving the roller with a peripheral speed which is different from the advancing speed of the conveyor.
Inventors
- 👤 Preben Einar Roar Orstam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:59
CPC Classifications
D; D21; D21J; D21J7/00; D21J1/00; D21J3/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
96 words
A method of smoothing surfaces of blanks of fiber mass, comprising keeping the blanks on a conveyor, advancing the blanks by means of said conveyor towards a smoothing roller and passing the blanks beneath said roller in such a way that a pressure contact is maintained between the peripheral surface of the roller and the surface of the blank being smoothed while keeping the smoothing roller at an elevated temperature, preferably between 100* C. and 300* C. and driving the smoothing roller at a peripheral speed which is different from the advancing speed of the conveyor.
Claim 2
Independent Claim
96 words
A method of smoothing surfaces of blanks of fiber mass, comprising keeping the blanks on a conveyor, advancing the blanks by means of said conveyor towards a smoothing roller and passing the blanks beneath said roller in such a way that a pressure contact is maintained between the peripheral surface of the roller and the surface of the blank being smoothed while keeping the smoothing roller at an elevated temperature, preferably between 100* C. and 300* C. and driving the smoothing roller at a peripheral speed which is different from the advancing speed of the conveyor.
Claim 3
Dependent Claim
23 words
A method according to claim 1, characterized in that the blanks are conveyed to the smoothing roller with a predetermined minimum moisture content.
Claim 4
Dependent Claim
26 words
A method according to claim 1, characterized in that the peripheral speed of the smoothing roller is approximately twice the rate of advance of the blanks.
Claim 5
Dependent Claim
40 words
A method according to claim 1, characterized in that the blanks are advanced successively under several smoothing rollers positioned one after the other, the contact pressure of the rollers increasing from roller to roller as seen in the travelling direction.
Claim 6
Dependent Claim
70 words
A method according to claim 1, wherein the blanks comprise at least two parts interconnected by means of a grooved hinge flap, e.g. egg cartons consisting of a bottom portion and a lid, characterized in that the hinged blanks are passed through the smoothing machine with their hinge grooves extending in the travelling direction, an after-grooving being performed in the grooves during the passage of the blanks through the machine.
Claim 7
Dependent Claim
94 words
A method of smoothing surfaces of blanks of fiber mass according to claim 1, wherein the smoothing roller is a heated pressure roller, advancing the blanks having a predetermined minimum moisture content by means of said conveyor towards said heated pressure roller, the blanks being held by the conveyor during their advance and passage beneath the pressure roller and their surfaces while being smoothed being supported by the conveyor, and subjecting the surface portions of the blanks being smoothed respectively to a pressure resulting in only a partial compression of the fiber mass thereof.
Claim 8
Dependent Claim
62 words
A smoothing machine for smoothing surfaces of blanks of fiber mass, comprising a conveyor adapted to individual advancement of the blanks, a smoothing roller arranged in a superjacent position relative to the conveyor, a heating device for heating the roller and a driving motor for rotating the roller at a peripheral speed which is different from the advancing speed of the conveyor.
Claim 9
Dependent Claim
62 words
A smoothing machine for smoothing surfaces of blanks of fiber mass, comprising a conveyor adapted to individual advancement of the blanks, a smoothing roller arranged in a superjacent position relative to the conveyor, a heating device for heating the roller and a driving motor for rotating the roller at a peripheral speed which is different from the advancing speed of the conveyor.
Claim 10
Dependent Claim
25 words
A smoothing machine according to claim 7, characterized in that a moistening device is provided before the smoothing roller as seen in the travelling direction.
Claim 11
Dependent Claim
45 words
A smoothing machine according to claim 7, characterized in that a plurality of rollers is positioned in succession above the conveyor, one after another, all the rollers being arranged in the travelling direction of the conveyor at a distance therefrom decreasing from roller to roller.
Claim 12
Dependent Claim
62 words
A smoothing machine according to claim 7, for carrying out the method according to claim 5, characterized in that at least one rotatable after-grooving roller or disc is arranged in a plane parallel to the travelling direction of the conveyor and transversely of the axial direction of the smoothing roller, said after-grooving roller or disc bEing adapted to engage said hinge grooves.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |