Patent US3871556A successfully refreshed from Google Patents.
US3871556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for filling moulds or cavities with a free-flowing mixture of reaction components
Assignee: Bayer AG
•
Filing: 1973-02-12
•
Granted: 1975-03-18
•
Expires: 1993-02-12
Abstract
Abstract A machine with at least two alternately feedable mixing heads is used for filling moulds or cavities with foam, each pipeline being provided with pipeline switches which are coupled with one another corresponding to the number of components and which are made up of identical housings with slides arranged in a row alongside one another.
Inventors
- 👤 Karl Breer
- 👤 Klaus Nadolski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:49
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/60; B29B7/603; B29B7/72; B29B7/728; B29B7/74; B29B7/7466; B29B7/7471; B29B7/7476; B29B7/748; B29B7/76; B29B7/7615; B29B7/7626; B29B7/80; B29B7/88; B29B7/94
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
194 words
A machine for filling moulds or cavities with a free flowing mixture of at least two components maintained separately in storage vessels therefor, the machine comprising: a. a pair of mixing heads comprising a first and a second mixing head, b. a pipeline switch for connection to each of the storage vessels and for successively delivering its component to the Respective mixing heads, c. each pipeline switch comprising an inlet for connection to its storage vessel, and a housing member including a cooperating slide, the housing member of each pipeline switch comprising an inlet communicating with the pipeline switch inlet, a first outlet having a pipeline connected to the first mixing head, a second outlet having a pipeline connected to the second mixing head, and a third outlet for receiving the component of the pipeline switch, the slide and housing of each pipeline switch having coordinated constructions so that by selected movement the slide in the housing, the inlet can be exclusively communicated with any one of said outlets, d. and actuating means coupled with the pipeline switches for operation of the slides thereof for successively delivering the components simultaneously to each mixing head.
Claim 2
Dependent Claim
194 words
A machine for filling moulds or cavities with a free flowing mixture of at least two components maintained separately in storage vessels therefor, the machine comprising: a. a pair of mixing heads comprising a first and a second mixing head, b. a pipeline switch for connection to each of the storage vessels and for successively delivering its component to the Respective mixing heads, c. each pipeline switch comprising an inlet for connection to its storage vessel, and a housing member including a cooperating slide, the housing member of each pipeline switch comprising an inlet communicating with the pipeline switch inlet, a first outlet having a pipeline connected to the first mixing head, a second outlet having a pipeline connected to the second mixing head, and a third outlet for receiving the component of the pipeline switch, the slide and housing of each pipeline switch having coordinated constructions so that by selected movement the slide in the housing, the inlet can be exclusively communicated with any one of said outlets, d. and actuating means coupled with the pipeline switches for operation of the slides thereof for successively delivering the components simultaneously to each mixing head.
Claim 3
Dependent Claim
68 words
A machine according to claim 1, wherein the housings comprise relief bores which communicate through relief ducts in the slides with the pipelines which lead to the non-functioning mixing heads and which are shut off on the one hand by the slides and on the other hand by inlets of the mixing heads, the relief duct associated with the functioning mixing head being completely closed in the housing.
Claim 4
Dependent Claim
51 words
A machine according to claim 1, wherein each housing comprises a return bore, the third outlet of each housing being connected through a return line with the inlet of the return bore, and a return line leading to the component storage vessel being connected to the outlet of the return bore.
Claim 5
Dependent Claim
31 words
A machine according to claim 3, wherein for each pipeline switch, a throttle valve is arranged in the return line between the third outlet and the inlet of the return bore.
Claim 6
Dependent Claim
24 words
A machine according to claim 2, wherein the return bores also form the relief bores whilst the return ducts also form the relief ducts.
Claim 7
Dependent Claim
33 words
A machine as claimed in claim 5 wherein the inlet of each housing opens into annular grooves surrounding the slides whilst the outlets of the housing open from annular grooves surrounding the slides.
Claim 8
Dependent Claim
17 words
A machine according to claim 2, wherein the relief ducts comprise annular grooves arranged in the slides.
Claim 9
Dependent Claim
37 words
A machine according to claim 2, wherein annular collecting grooves for leakage liquid are provided surrounding the slides and having a connection with the relief bores, the collecting grooves being arranged towards the ends of the housing.
Claim 10
Dependent Claim
47 words
A machine according to claim 1, wherein the housing of each pipeline switch is preceded via a seal by a connecting plate into which a pipeline leading away from the component storage vessel can open into a throughflow duct which corresponds to the inlet of the housing.
Claim 11
Dependent Claim
47 words
A machine according to claim 9, wherein a return duct is provided in the connecting plate, which at one end corresponds to the return bore of the housing and from the other end of which the return line leads to a connection for the component storage vessel.
Claim 12
Dependent Claim
24 words
A machine according to claim 10, wherein a safety valve is arranged in the connecting plate between the throughflow duct and the return duct.
Claim 13
Dependent Claim
22 words
A machine according to claim 1 wherein the third outlet of each housing is provided with a closure comprising an end plate.
Claim 14
Dependent Claim
37 words
A machine according to claim 12, wherein each pipeline switch comprises a return bore, and the end plate has a return duct for connecting the third outlet to the inlet of the return bore of the housing.
Claim 15
Dependent Claim
22 words
A machine according to claim 1, and a control system for the actuating means for initiation and operation of the actuating means.
Claim 16
Dependent Claim
34 words
A machine according to claim 14, wherein the control system is equipped with actuating switches for each mixing head, and a blocking device which prevents more than one mixing head from being simultaneously actuated.
Claim 17
Dependent Claim
18 words
A machine according to claim 14, wherein the control system is activated and monitored by a program transmitter.
Claim 18
Dependent Claim
31 words
A machine according to claim 1, the third outlet of the housing of each of the pipeline switches being connected to receiving means, said receiving means being a further mixing head.
Claim 19
Dependent Claim
14 words
A machine according to claim 1, the housing of each pipeline switch being identical.
Claim 20
Dependent Claim
91 words
A machine according to claim 1, including an additional pair of mixing heads, each pipeline switch having a second housing member and cooperating slide of the same construction as the other thereof, the inlet of the second housing being connected to the third outlet of the other housing, and the first outlet and the second outlet of the second housing having pipelines connected, respectively, to the mixing heads of said additional pair for successively delivering the components simultaneously to each of the mixing heads of the additional pair of mixing heads.
Claim 21
Dependent Claim
68 words
A machine according to claim 19, wherein the housings comprise relief bores which communicate through relief ducts in the slides with the pipelines which lead to the non-functioning mixing heads and which are shut off on the one hand by the slides and on the other hand by inlets of the mixing heads, the relief duct associated with the functioning mixing head being completely closed in the housing.
Claim 22
Dependent Claim
92 words
A machine according to claim 19, wherein the housings comprise return bores, the third outlet of the last housing of each pipeline switch being connected through a return line with the inlet of a return bore, and a return line leading to the component storage vessel being connected to the outlet of the return bores of the first housing, whilst in any remaining housings the outlet of the return bore of the preceding housing communicates withe the inlet of the return bore of the following housing, as seen in the return direction.
Claim 23
Dependent Claim
31 words
A machine according to claim 21, wherein a throttle valve is arranged in the return line between the third outlet of the last housing and its inlet of the return bore.
Claim 24
Dependent Claim
24 words
A machine according to claim 20, wherein the return bores also form the relief bores whilst the return ducts also form the relief ducts.
Claim 25
Dependent Claim
33 words
A machine as claimed in claim 23, wherein the inlet of each housing opens into annular grooves surrounding the slides whilst the outlets of the housing open from annular groves surrounding the slides.
Claim 26
Dependent Claim
17 words
A machine according to claim 20, wherein the relief ducts comprise annular grooves arranged in the slides.
Claim 27
Dependent Claim
37 words
A machine according to claim 20, wherein annular collecting grooves for leakage liquid are provided surrounding the slides and having a connection with the relief bores, the collecting grooves being arranged towards the ends of the housing.
Claim 28
Dependent Claim
49 words
A machine according to claim 19, wherein the first housing of each pipeline switch is preceded via a seal by a connecting plate into which a pipeline leading away from the component storage vessel can open into a throughflow duct which corresponds to the inlet of the first housing.
Claim 29
Dependent Claim
48 words
A machine according to claim 27, wherein a return duct is provided in the connecting plate, which at one end corresponds to the return bore of the first housing and from the other end of which the return line leads to the connection for the component storage vessel.
Claim 30
Dependent Claim
24 words
A machine according to claim 28, wherein a safety valve is arranged in the connecting plate between the throughflow duct and the return duct.
Claim 31
Dependent Claim
27 words
A machine according to claim 19, wherein the third outlet of the last housing of each pipeline switch is provided with a closure comprising an end plate.
Claim 32
Dependent Claim
38 words
A machine according to claim 30, wherein each pipeline switch comprises a return bore, and the end plate has a return duct for connecting the third outlet to the inlet of the return bore of the last housing.
Claim 33
Dependent Claim
22 words
A machine according to claim 19, and a control system for the actuating means for initiation and operation of the actuating means.
Claim 34
Dependent Claim
34 words
A machine according to claim 32, wherein the control system is equipped with actuating switches for each mixing head, and a blocking device which prevents more than one mixing head from being simultaneously actuated.
Claim 35
Dependent Claim
32 words
A machine according to claim 19, the third outlet of the last housing of each of the pipeline switches being connected to receiving means, said receiving means being a further mixing head.
Claim 36
Dependent Claim
14 words
A machine according to claim 19, the housing of each pipe switch being identical.
Claim 37
Dependent Claim
18 words
A machine according to claim 32, wherein the control system is activated and monitored by a program transmitter.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |