US4629594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing shaped parts
Assignee: Werz J F Werzalit-Werke KG
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Filing: 1985-03-26
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Granted: 1986-12-16
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Expires: 2005-03-26
Abstract
Abstract In an arrangement for and a method of producing shaped parts of a non-swellable mixture of fibers and heat-hardenable resin, a pressing mass divider is introduced into lower pressing tool during filling of the mixture.
Inventors
- 👤 Edmund Munk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:29
CPC Classifications
B; B27; B27N; B27N5/00; B27N5/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
A method of producing shaped parts from a non-swellable mixture of fibers with a heat-hardenable synthetic plastic, comprising the steps of providing upper and lower pressing tools movable between an open position in which they are spaced from one another and a space therebetween is filled with said mixture and a closed position in which they are located close to one another and said mixture is pressed therebetween; providing a pressing mass divider and introducing said divider into said space before a filling step and dividing the mixture by said pressing mass divider during filling of the mixture into said space; and removing said pressing mass divider from said space between the upper and lower pressing tools before said upper and lower pressing tools are moved to said closed position and said mixture is pressed.
Claim 2
Independent Claim
135 words
A method of producing shaped parts from a non-swellable mixture of fibers with a heat-hardenable synthetic plastic, comprising the steps of providing upper and lower pressing tools movable between an open position in which they are spaced from one another and a space therebetween is filled with said mixture and a closed position in which they are located close to one another and said mixture is pressed therebetween; providing a pressing mass divider and introducing said divider into said space before a filling step and dividing the mixture by said pressing mass divider during filling of the mixture into said space; and removing said pressing mass divider from said space between the upper and lower pressing tools before said upper and lower pressing tools are moved to said closed position and said mixture is pressed.
Claim 3
Dependent Claim
33 words
A method as defined in claim 1; and further comprising the step of continuously moving the pressing mass divider in a direction which forms an angle different from zero with a pressing direction.
Claim 4
Dependent Claim
22 words
A method as defined in claim 1; and further comprising the step of subjecting said divider to vibrations during said filling step.
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) | 1989-12-15 | 1990-06-16 | 1990-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-15 | 1994-06-16 | 1994-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-15 | 1998-06-16 | 1998-12-16 | $7700.00 | Window Closed / Lapsed |