Patent US3071822A successfully refreshed from Google Patents.
US3071822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming a mat
Assignee: Bowater Board Co
•
Filing: 1959-03-03
•
Granted: 1963-01-08
•
Expires: 1979-03-03
Abstract
No abstract record available.
Inventors
- 👤 John G Meiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:03
CPC Classifications
D; D21; D21H; D21H11/00; B; B27; B27N; B27N3/00; B27N3/08; B27N3/10; B27N3/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
A METHOD OF FORMING A MAT FROM PARTICLES WHICH COMPRISES CONVEYING A STREAM OF GAS CONTAINING A HIGH CONCENTRATION OF SAID PARTICLES AT A VELOCITY SUFFICIENTLY HIGH TO DISTRIBUTE SAID PARTICLES THROUGHOUT THE STREAM WITHOUT MATERIAL AGGLOMERATION OF SAID PARTICLES, DISCHARGING SAID STREAM INTO THE AIR TO PROGRESSIVELY SPREAD THE PARTICLES AND REDUCE THE VELOCITY OF SAID STREAM AND SIMULTANEOUSLY LATERALLY OSCILLATING SAID STREAM TO FURTHER SPREAD THE PARTICLES OVER A WIDE AREA, COLLECTING A SUBSTANTIAL PORTION OF SAID PARTICLES OUT OF A CENTRAL PORTION OF SAID AREA TO FORM A MAT ON A HORIZONTAL FORAMINOUS MEMBER DISPOSED TRANSVERSELY TO THE DIRECTION OF DISCHARGE OF SAID STREAM WHEN THE VELOCITY OF SAID STREAM IN THE DIRECTION OF DISCHARGE REMAINS SUBSTANTIAL BUT HAS BEEN SUFFICIENTLY REDUCED TO PREVENT MATERIAL DISTURBANCE OF PARTICLES PREVIOUSLY COLLECTED ON SAID FORAMINOUS MEMBER, WITHDRAWING BY SUCTION THROUGH SAID FORAMINOUS MEMBER GAS FROM SAID CENTRAL PORTION, AND WITHDRAWING BY SUCTION PARTICLES AND GAS FROM THE EDGES OF SAID AREA THROUGH PATHS PASSING OUTSIDE OF SAID FORAMINOUS MEMBER.
Claim 2
Independent Claim
170 words
A METHOD OF FORMING A MAT FROM PARTICLES WHICH COMPRISES CONVEYING A STREAM OF GAS CONTAINING A HIGH CONCENTRATION OF SAID PARTICLES AT A VELOCITY SUFFICIENTLY HIGH TO DISTRIBUTE SAID PARTICLES THROUGHOUT THE STREAM WITHOUT MATERIAL AGGLOMERATION OF SAID PARTICLES, DISCHARGING SAID STREAM INTO THE AIR TO PROGRESSIVELY SPREAD THE PARTICLES AND REDUCE THE VELOCITY OF SAID STREAM AND SIMULTANEOUSLY LATERALLY OSCILLATING SAID STREAM TO FURTHER SPREAD THE PARTICLES OVER A WIDE AREA, COLLECTING A SUBSTANTIAL PORTION OF SAID PARTICLES OUT OF A CENTRAL PORTION OF SAID AREA TO FORM A MAT ON A HORIZONTAL FORAMINOUS MEMBER DISPOSED TRANSVERSELY TO THE DIRECTION OF DISCHARGE OF SAID STREAM WHEN THE VELOCITY OF SAID STREAM IN THE DIRECTION OF DISCHARGE REMAINS SUBSTANTIAL BUT HAS BEEN SUFFICIENTLY REDUCED TO PREVENT MATERIAL DISTURBANCE OF PARTICLES PREVIOUSLY COLLECTED ON SAID FORAMINOUS MEMBER, WITHDRAWING BY SUCTION THROUGH SAID FORAMINOUS MEMBER GAS FROM SAID CENTRAL PORTION, AND WITHDRAWING BY SUCTION PARTICLES AND GAS FROM THE EDGES OF SAID AREA THROUGH PATHS PASSING OUTSIDE OF SAID FORAMINOUS MEMBER.
Claim 3
Dependent Claim
117 words
IN AN APPARATUS FOR FORMING A MAT FROM PARTICLES, THE COMBINATION WHICH COMPRISES A HOUSING, A FORAMINOUS PARTICLE-RECEIVING MEMBER POSITIONED IN SAID HOUSING WITH THE EDGES OF SAID MEMBER SPACED FROM THE ADJACENT WALLS OF SAID HOUSING, MEANS SPACED FROM SAID MEMBER TO PROJECT TOWARD SAID MEMBER ALONG AN UNOBSTRUCTED PATH A STREAM OF GAS AND PARTICLES TO BE DEPOSITED ON SAID MEMBER AS A MAT AND LATERALLY OUTSIDE OF BOTH EDGES OF SAID MEMBER, MEANS TO WITHDRAW GAS FROM THE AREA WITHIN THE EDGES OF SAID MEMBER BY SUCTION APPLIED THROUGH SAID MEMBER, AND MEANS TO WITHDRAW PARTICLES AND GAS FROM THE AREAS LATERALLY OUTSIDE OF SAID MEMBER BY SUCTION APPLIED LATERALLY OUTSIDE OF SAID MEMBER.
Claim 4
Dependent Claim
117 words
IN AN APPARATUS FOR FORMING A MAT FROM PARTICLES, THE COMBINATION WHICH COMPRISES A HOUSING, A FORAMINOUS PARTICLE-RECEIVING MEMBER POSITIONED IN SAID HOUSING WITH THE EDGES OF SAID MEMBER SPACED FROM THE ADJACENT WALLS OF SAID HOUSING, MEANS SPACED FROM SAID MEMBER TO PROJECT TOWARD SAID MEMBER ALONG AN UNOBSTRUCTED PATH A STREAM OF GAS AND PARTICLES TO BE DEPOSITED ON SAID MEMBER AS A MAT AND LATERALLY OUTSIDE OF BOTH EDGES OF SAID MEMBER, MEANS TO WITHDRAW GAS FROM THE AREA WITHIN THE EDGES OF SAID MEMBER BY SUCTION APPLIED THROUGH SAID MEMBER, AND MEANS TO WITHDRAW PARTICLES AND GAS FROM THE AREAS LATERALLY OUTSIDE OF SAID MEMBER BY SUCTION APPLIED LATERALLY OUTSIDE OF SAID MEMBER.
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |