US3690800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection mould having a closure in the injection channel particularly for moulded shapes of polyurethane
Assignee: Semperit AG Holding
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Filing: 1970-03-05
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Granted: 1972-09-12
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Expires: 1990-03-05
Abstract
Abstract An injection mould is disclosed for the manufacture of moulded shapes from an injectable material, with a device for closing the injection channel by means of an elastic deformable body, particularly in the processing of foamable synthetic materials. The closing device comprises a diaphragm-type sealing disk, particularly of silicone, which is housed in a cross-bore and held therein by an insert. The diaphragm can be operated approximately perpendicularly to the injection channel by compressed air or by a piston and is substantially arranged in a plane parallel to the axis of the injection channel.
Inventors
- 👤 Johann Schwab
- 👤 Wladimir Hascic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:38
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/27; B29C45/28; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/42; B29C44/424; B29C44/425; Y; Y10; Y10S; Y10S264/00; Y10S264/83
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
123 words
An injection mould assembly for the manufacture of moulded articles from an injection mouldable material, particularly useful in the processing of foamable synthetic materials comprising means providing an injection channel for the injection mouldable material, a device for closing said injection channel by means of an elastic deformable body, comprising a substantially diaphragmtype sealing disk with lip means, said diaphragm-type sealing disk being arranged in a plane substantially parallel to the lengthwise axis of said injection channel, a piston arrangement having a head portion for operatively moving said diaphragm-type sealing disk approximately perpendicular to the lengthwise axis of said injection channel between an opening position and an injection channel-blocking position, said lip means of said sealing disk being secured to said head portion.
Claim 2
Dependent Claim
123 words
An injection mould assembly for the manufacture of moulded articles from an injection mouldable material, particularly useful in the processing of foamable synthetic materials comprising means providing an injection channel for the injection mouldable material, a device for closing said injection channel by means of an elastic deformable body, comprising a substantially diaphragmtype sealing disk with lip means, said diaphragm-type sealing disk being arranged in a plane substantially parallel to the lengthwise axis of said injection channel, a piston arrangement having a head portion for operatively moving said diaphragm-type sealing disk approximately perpendicular to the lengthwise axis of said injection channel between an opening position and an injection channel-blocking position, said lip means of said sealing disk being secured to said head portion.
Claim 3
Dependent Claim
31 words
The injection mould assembly as defined in claim 1, further including means defining an enlargement of said injection channel, said sealing disk being housed in said enlargement of said injection channel.
Claim 4
Dependent Claim
34 words
The injection mould assembly as defined in clam 1, wherein said diaphragm-type sealing disk is formed of elastic material, and means providing a pressure-conveying agent for forcing said sealing disk into said injection channel.
Claim 5
Dependent Claim
34 words
The injection mould assembly as defined in clam 1, wherein said diaphragm-type sealing disk is formed of elastic material, and means providing a pressure-conveying agent for forcing said sealing disk into said injection channel.
Claim 6
Dependent Claim
19 words
The injection mould assembly as defined in claim 3, wherein said diaphragm-type sealing disk is formed of silicone rubber.
Claim 7
Dependent Claim
46 words
The injection mould assembly as defined in claim 1, further including means defining a cross-bore communicating with said injection channel, said cross-bore including a mouth portion possessing a reduced internal diameter in a direction towards said injection channel, said sealing disk being housed in said cross-bore.
Claim 8
Dependent Claim
24 words
The injection mould assembly as defined in claim 1, wherein said injection channel has a reduced diameter at the region of said sealing disk.
Claim 9
Dependent Claim
24 words
The injection mould assembly as defined in claim 6, wherein said injection channel has said reduced diameter at the side facing said sealing disk.
Claim 10
Dependent Claim
52 words
The injection mould assembly as defined in claim 1, further including means defining a cross-bore communicating with said injection channel, said cross-bore having a mouth portion confronting said injection channel, means defining a cavity seated opposite said mouth portion for receiving said sealing disk when the latter moves into its closing position.
Claim 11
Dependent Claim
56 words
The injection mould assembly as defined in claim 1, wherein said piston arrangement is movable between an opening and blocking position corresponding to the opening position and blocking position of said injection channel, and means for admitting a pressure-conveying agent to said piston arrangement for displacing such selectively into said opening position and blocking position respectively.
Claim 12
Dependent Claim
60 words
The injection mould assembly as defined in claim 1, further including means defining a substantially trough-shaped recess for receiving a correspondingly shaped portion of said sealing disk, said piston arrangement being Equipped with actuating head means confronting said sealing disk, said actuating head means possessing a substantially spherical surface which mates with said corresponding shaped portion of said sealing disk.
Claim 13
Dependent Claim
42 words
The injection mould assembly as defined in claim 1, further including adaptor means for housing said closure device, means defining a substantially trough-shaped recess through which passes said injection channel, said adaptor means being arranged at the region of said trough-shaped recess.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |