US4404168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the discontinuous production of articles from foamed plastics
Assignee: Mirabed AG
•
Filing: 1981-08-24
•
Granted: 1983-09-13
•
Expires: 2001-08-24
Abstract
Abstract Apparatus for the discontinuous production of articles from a foamed plastic, including metering vessels for reaction components arranged above a mixing vessel. The metering vessels are with the interposition of communication bellows connected to the mixing vessel. Inside the cover of the mixing vessel exists an annular space communicating with an annular slot which opens towards the internal wall of the mixing vessel, so that when filling the mixing vessel first one of the reaction components is introduced into the annular space, flowing along the inner wall of the mixing vessel downwardly through the annular slot and in this way flushes off any residue.
Inventors
- 👤 Beat Baumberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:40
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/60; B01; B01F; B01F35/00; B01F35/10; B01F35/145; B01F35/1452; B01F35/71; B01F35/712; B01F35/717; B01F35/7179; B01F35/71805; B29B7/74; B29B7/7404; B29B7/7433
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
Apparatus for the discontinuous production of articles from a foamed plastic, having a mixing vessel and at least two metering vessels for the basic ingredients, which metering vessels are located above said mixing vessel, and characterized in that the mixing is supported for tilting movement to discharge its contents, a lid for the mixing vessel, said lid being provided with an annular space (17) communicating with a lower annular slot (19) which opens towards the inner wall of the mixing vessel, and one of the metering vessels (4,5) having an outlet opening (20) which discharges an ingredient into the annular space through said annular slot and onto the inner wall of said mixing vessel.
Claim 2
Dependent Claim
114 words
Apparatus for the discontinuous production of articles from a foamed plastic, having a mixing vessel and at least two metering vessels for the basic ingredients, which metering vessels are located above said mixing vessel, and characterized in that the mixing is supported for tilting movement to discharge its contents, a lid for the mixing vessel, said lid being provided with an annular space (17) communicating with a lower annular slot (19) which opens towards the inner wall of the mixing vessel, and one of the metering vessels (4,5) having an outlet opening (20) which discharges an ingredient into the annular space through said annular slot and onto the inner wall of said mixing vessel.
Claim 3
Dependent Claim
24 words
Apparatus as claimed in claim 1 further characterized in that the annular slot (19) is limited internally by a sleeve (18) which protrudes downwardly.
Claim 4
Dependent Claim
35 words
Apparatus as claimed in claim 1 or 2 further characterized in that the lid has an inlet opening (22) connected by a bellows (21) to the outlet opening (20) of one of the metering vessels.
Claim 5
Dependent Claim
20 words
Apparatus as claimed in claim 1 further characterized in that each metering vessel is suspended at a scale assembly (26,27).
Claim 6
Dependent Claim
28 words
Apparatus as claimed in claim 1 further characterized in that the mixing vessel (3) is so supported that it may be tilted downwardly and away from the lid.
Claim 7
Dependent Claim
40 words
Apparatus as claimed in claim 1 or 5 further characterized in that the mixing vessel has a displaceable bottom wall supported by an articulated lever (40), and a fluid-operated cylinder (8) for actuating the lever to displace the bottom wall.
Claim 8
Dependent Claim
46 words
Apparatus as claimed in claim 1 further characterized by a device which allows the mixing vessel to be supplied with a metered amount of at least one other component, said device being equipped with a counter (31) for measuring the supplied amount of the additional component.
References Cited (Backward Citations)
US3227424A
Cited
US3312374A
Cited
US3771770A
Cited
US3753554A
Cited
US4005981A
Cited
US4218203A
Cited
US4260355A
Cited
US4314963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |