Patent US3216890A successfully refreshed from Google Patents.
US3216890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for molding pulp articles
Assignee: Keyes Fibre Corp
•
Filing: 1963-02-26
•
Granted: 1965-11-09
•
Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Crabtree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:43
CPC Classifications
D; D21; D21J; D21J5/00; D21J7/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
141 words
APPARATUS FOR FORMING MOLDED PULP ARTICLES COMPRISING A SUCTION MOLD HAVING A FORMING SURFACE CONTOURED TO PRODUCE THE DESIRED ARTICLES BY SUCTION DEPOSITION OF A LAYER OF PULP FIBERS THEREON, AN UPSTANDING FORMATION PREVENTING MEMBER SECURED TO THE FORMING SURFACE TO PROTRUDE THEREFROM TO A HEIGHT SUBSTANTIALLY GREATER THAN THE THICKNESS OF THE LAYER OF PULP FIBERS NORMALLY DEPOSITED ON THE FORMING SURFACE, THE MEMBER BEING SHAPED TO CONFORM GENERALLY TO THE SHAPE OF AN EDGE SURFACE TO BE FORMED ACROSS THE THICKNESS OF THE LAYER, THE MEMBER BEING OF YIELDABLE MATERIAL WHICH MAY BE DEPRESSED TOWARD THE FORMING SURFACE TO A HEIGHT CORRESPONDING TO THE THICKNESS OF THE LAYER AT THE DESIRED EDGE SURFACE WITH A RESULTANT CHANGE IN SHAPE TO CONFORM CLOSELY TO THE SHAPE OF THE EDGE SURFACE TO BE FORMED ACROSS THE THICKNESS OF THE MOLDED ARTICLES.
Claim 2
Dependent Claim
141 words
APPARATUS FOR FORMING MOLDED PULP ARTICLES COMPRISING A SUCTION MOLD HAVING A FORMING SURFACE CONTOURED TO PRODUCE THE DESIRED ARTICLES BY SUCTION DEPOSITION OF A LAYER OF PULP FIBERS THEREON, AN UPSTANDING FORMATION PREVENTING MEMBER SECURED TO THE FORMING SURFACE TO PROTRUDE THEREFROM TO A HEIGHT SUBSTANTIALLY GREATER THAN THE THICKNESS OF THE LAYER OF PULP FIBERS NORMALLY DEPOSITED ON THE FORMING SURFACE, THE MEMBER BEING SHAPED TO CONFORM GENERALLY TO THE SHAPE OF AN EDGE SURFACE TO BE FORMED ACROSS THE THICKNESS OF THE LAYER, THE MEMBER BEING OF YIELDABLE MATERIAL WHICH MAY BE DEPRESSED TOWARD THE FORMING SURFACE TO A HEIGHT CORRESPONDING TO THE THICKNESS OF THE LAYER AT THE DESIRED EDGE SURFACE WITH A RESULTANT CHANGE IN SHAPE TO CONFORM CLOSELY TO THE SHAPE OF THE EDGE SURFACE TO BE FORMED ACROSS THE THICKNESS OF THE MOLDED ARTICLES.
Claim 3
Independent Claim
34 words
THE METHOD OF FORMING MOLDED PULP ARTICLES WHICH COMPRISES THE STEPS OF SUCTION DEPOSITING A LAYER OF PULP FIBERS ON A FORMING SURFACE CONTOURED TO PRODUCE THE DESIRED ARTICLE WHILE SELECTIVELY PREVENTING DEPOSITION OF
Claim 4
Independent Claim
34 words
THE METHOD OF FORMING MOLDED PULP ARTICLES WHICH COMPRISES THE STEPS OF SUCTION DEPOSITING A LAYER OF PULP FIBERS ON A FORMING SURFACE CONTOURED TO PRODUCE THE DESIRED ARTICLE WHILE SELECTIVELY PREVENTING DEPOSITION OF
References Cited (Backward Citations)
US1983553A
Cited
US3016090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |