US3857550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for producing foams, homogeneous or structural materials from at least two liquid reaction components
Assignee: Bayer AG
•
Filing: 1973-04-12
•
Granted: 1974-12-31
•
Expires: 1993-04-12
Abstract
Abstract In the mixing head of a foaming machine, the delivery pipes open into slides displaceable in the mixing head and provided with injection openings, the wall of the mixing chamber having a cutout for each slide valve in which part of the wall surface of the slide valve forms the wall of the mixing chamber.
Inventors
- 👤 U Knipp
- 👤 W Schneider
- 👤 R Moeres
- 👤 H Boden
- 👤 H Ersfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:03
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/74; B29B7/76; B29B7/7631; B29B7/30; B29B7/58; B29B7/60; B29B7/603; B29B7/80; B29B7/801; B29B7/7615; B29B7/7626; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582; Y10; Y10S; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
110 words
An apparatus for mixing at least two liquid reaction components, and molding the resulting reaction product comprising a storage container for each reaction component, delivery pipes which lead from each storage container to a mixer comprising a mixing chamber, a slide valve being arranged at the end of each delivery pipe, the slide valves being coupled with one another for movement, wherein each slide valve comprises an injection opening and is arranged in a cut-out in opposite walls of the mixing chamber, so that part of the wall surface of the slide valve forms the wall of the mixing chamber and the injection openings may be aligned with the cut-outs.
Claim 2
Independent Claim
110 words
An apparatus for mixing at least two liquid reaction components, and molding the resulting reaction product comprising a storage container for each reaction component, delivery pipes which lead from each storage container to a mixer comprising a mixing chamber, a slide valve being arranged at the end of each delivery pipe, the slide valves being coupled with one another for movement, wherein each slide valve comprises an injection opening and is arranged in a cut-out in opposite walls of the mixing chamber, so that part of the wall surface of the slide valve forms the wall of the mixing chamber and the injection openings may be aligned with the cut-outs.
Claim 3
Dependent Claim
19 words
An apparatus as claimed in claim 1, wherein the slide valves are in the form of rotary slide valves.
Claim 4
Dependent Claim
28 words
An apparatus as claimed in claim 2, wherein the rotary slide valves comprise interengaging gear wheels, one of which meshes with a rack provided with an adjusting drive.
Claim 5
Dependent Claim
37 words
An apparatus as claimed in claim 2 wherein the edges of the cutouts in the wall of the mixing chamber are in the form of control edges and the rotary slide valves comprise independent axial adjusting means.
Claim 6
Dependent Claim
19 words
An apparatus as claimed in claim 1, wherein the slide valves are in the form of axial slide valves.
Claim 7
Dependent Claim
21 words
An apparatus as claimed in claim 5, wherein the axial slide valves are connected to a hydraulic or pneumatic adjusting means.
Claim 8
Dependent Claim
37 words
An apparatus as claimed in claim 5 wherein the edges of the cutouts in the wall of the mixing chamber are in the form of control edges and the axial slide valves comprise a rotary adjusting means.
Claim 9
Dependent Claim
54 words
An apparatus as claimed in claim 1 wherein the edges of the cutouts in the wall of the mixing chamber are in the form of control edges and an adjustable stop mechanism is associated with the slide valves in the working position direction, that is when the injection openings are aligned with the cutouts.
Claim 10
Dependent Claim
16 words
An apparatus as claimed in claim 8, wherein the control edges are inclined to the vertical.
Claim 11
Dependent Claim
27 words
An apparatus as claimed in claim 1 wherein the slide valves comprise return bores which correspond with return pipes which connect the mixer to the storage containers.
Claim 12
Dependent Claim
15 words
An apparatus as claimed in claim 10, wherein each return pipe has a throttle zone.
Claim 13
Dependent Claim
22 words
An apparatus as claimed in claim 11, wherein the free cross sections of the throttle zones in each slide valve are adjustable.
Claim 14
Dependent Claim
22 words
An apparatus as claimed in claim 10, wherein the return bores of the slide valves are in the form of throttle zones.
Claim 15
Dependent Claim
16 words
An apparatus as claimed in claim 1 wherein a dividing plane runs through the mixing chamber.
Claim 16
Dependent Claim
24 words
An apparatus as claimed in claim 1 wherein each slide valve has a cavity therein for pushing mixture residue out of the mixing chamber.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |