US3788337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for mixing components which react quickly with one another, more especially for the production of foam materials
Assignee: Bayer AG
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Filing: 1971-12-02
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Granted: 1974-01-29
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Expires: 1991-12-02
Abstract
Abstract Components which react quickly with one another, are mixed for the production of foam materials within a mixing chamber which is equipped with simultaneously acting electromagnetic actuating devices for the injectors.
Inventors
- 👤 K Breer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:57
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/461; B29B; B29B7/00; B29B7/74; B29B7/76; B29B7/7615; Y; Y10; Y10S; Y10S261/00; Y10S261/26; Y10S366/00; Y10S366/604; Y10S521/00; Y10S521/917; Y10T; Y10T137/00; Y10T137/0318; Y10T137/8593; Y10T137/85954; Y10T137/87096
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
96 words
An apparatus for mixing components which react quickly with one another, the mixing apparatus comprising a stirrerless mixing head with a number of supply pipes corresponding to the number of components to be introduced into the mixing head, the outlets of said supply pipes being connected to the mixing head and equipped at the mixing head with injector valves, and simultaneously acting electromagnetic actuating devices for opening and closing the valves for controlling flow of the components into the mixing head, the actuating devices comprising energizing coils having cores which form the stems of the injectors.
Claim 2
Independent Claim
96 words
An apparatus for mixing components which react quickly with one another, the mixing apparatus comprising a stirrerless mixing head with a number of supply pipes corresponding to the number of components to be introduced into the mixing head, the outlets of said supply pipes being connected to the mixing head and equipped at the mixing head with injector valves, and simultaneously acting electromagnetic actuating devices for opening and closing the valves for controlling flow of the components into the mixing head, the actuating devices comprising energizing coils having cores which form the stems of the injectors.
Claim 3
Dependent Claim
22 words
An apparatus according to claim 1, characterised in that the actuating devices are connected through a common switch to a voltage switch.
Claim 4
Dependent Claim
13 words
An apparatus according to claim 1 characterised in that the cores are iron.
Claim 5
Dependent Claim
16 words
An apparatus according to claim 1 cHaracterised in that the injectors are equipped with return springs.
Claim 6
Dependent Claim
113 words
An apparatus according to claim 1, a pump operatively disposed in each supply pipe, a return line for each pump communicating the pump outlet with the pump inlet, a channel valve in each supply pipe between the pump disposed therein and the mixing head for switching pump output between the supply pipe to the mixing head and a return line, and actuating means operatively interconnected with the channel valves and the actuating devices for actuating the channel valves and the actuating devices for flow of the components from the pumps to the mixing head for the mixing, and for flow of the components into the return lines when the actuating devices are closed.
Claim 7
Dependent Claim
21 words
An apparatus according to claim 5 said actuating means comprising an advance time relay for time control of the mixing period.
Claim 8
Dependent Claim
17 words
An apparatus according to claim 5, and means connected to said pump for continuously operating said pumps.
Claim 9
Dependent Claim
21 words
An apparatus according to claim 7, said actuating means comprising an advance time relay for time control of the mixing period.
Claim 10
Dependent Claim
14 words
An apparatus according to claim 5, said actuating means being an advance time relay.
Claim 11
Dependent Claim
18 words
An apparatus according to claim 5, said actuating means simultaneously actuating the channel valves and the actuating devices.
Claim 12
Dependent Claim
53 words
Apparatus according to claim 5, and drive means connected to each pump, and control means for starting the pump drive means, and controlling operation of the actuating means, said control means starting the pump drive means in advance of operation of the actuating means for flow from the pumps to the mixing head.
Claim 13
Dependent Claim
18 words
An apparatus according to claim 11, said actuating means simultaneously actuating the channel valves and the actuating devices.
Claim 14
Dependent Claim
78 words
An apparatus according to claim 5, and drive means connected to the pumps, and control means for starting and stopping of the pump drive means, and controlling operation of the actuating means, said control means starting the pump drive means in advance of operation of the actuating means for flow from the pumps to the mixing head, and stopping the pump drive means after operation of the actuating means switching output of the pumps to the return lines.
Claim 15
Dependent Claim
21 words
An apparatus according to claim 13 said actuating means comprising an advance time relay for time control of the mixing period.
Claim 16
Dependent Claim
18 words
An apparatus according to claim 13, said actuating means simultaneously actuating the channel valves and the actuating devices.
Claim 17
Independent Claim
156 words
An apparatus for mixing components which react quickly with one another, the mixing apparatus comprising a storage vessel for each of the components, a mixing head for mixing of the components, a supply pipe communicating each of the storage vessels and the mixing head, a pump having a drive means operatively interposed in each of the supply pipes, a return line for each pump communicating the pump outlet with the pump inlet, an injector valve in each supply pipe between return line and the mixing head for intermittent introduction of the components into the mixing head, a channel valve in each supply pipe for switching flow between the return conduit and the supply pipe to the mixing head, and control means operatively connected to the pump drive means and the channel valves for successively starting the pump drive means and switching the channel valves from the return conduit to the supply pipe fo the mixing head.
Claim 18
Independent Claim
156 words
An apparatus for mixing components which react quickly with one another, the mixing apparatus comprising a storage vessel for each of the components, a mixing head for mixing of the components, a supply pipe communicating each of the storage vessels and the mixing head, a pump having a drive means operatively interposed in each of the supply pipes, a return line for each pump communicating the pump outlet with the pump inlet, an injector valve in each supply pipe between return line and the mixing head for intermittent introduction of the components into the mixing head, a channel valve in each supply pipe for switching flow between the return conduit and the supply pipe to the mixing head, and control means operatively connected to the pump drive means and the channel valves for successively starting the pump drive means and switching the channel valves from the return conduit to the supply pipe fo the mixing head.
Claim 19
Dependent Claim
99 words
In a process for production of articles from components which react quickly with one another, comprising separately pumping the components with intermittently operated pumps through supply pipes outfitted with valves, to a mixing head therefor, and intermittently opening and closing the valves for controlling flow of the components into the mixing head, the improvement which comprises starting the pumps before opening the valves and in the interval between starting of the pumps and opening of the valves circulating the discharges from the pumps to the pump inleTs for stabilization of flow of the components before opening of the valves.
Claim 20
Dependent Claim
99 words
In a process for production of articles from components which react quickly with one another, comprising separately pumping the components with intermittently operated pumps through supply pipes outfitted with valves, to a mixing head therefor, and intermittently opening and closing the valves for controlling flow of the components into the mixing head, the improvement which comprises starting the pumps before opening the valves and in the interval between starting of the pumps and opening of the valves circulating the discharges from the pumps to the pump inleTs for stabilization of flow of the components before opening of the valves.
Claim 21
Dependent Claim
12 words
Process according to claim 17, said components reacting to form foamed materials.
Claim 22
Dependent Claim
13 words
Process according to claim 17, said components reacting to form polyurethane foamed plastic.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |