Patent US3801299A successfully refreshed from Google Patents.
US3801299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing hollow glass objects
Assignee: Deutsche Acheson GmbH
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Filing: 1972-08-16
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Granted: 1974-04-02
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Expires: 1992-08-16
Abstract
Abstract Prior to introducing a body of fluid glass into a split mold, the wall of the mold cavity, closed except for a charging opening, is sprayed with an atomized lubricating and parting agent from a nozzle operated by means of compressed air, thereby avoiding deposition of the agent on the engaging faces of the mold sections and the resulting surface defects in the shaped glass object.
Inventors
- 👤 H Renkl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:14
CPC Classifications
C; C03; C03B; C03B9/00; C03B9/30; C03B40/00; C03B40/02; C03B40/027
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
193 words
A glass molding apparatus comprising, in combination: a. a mold constituted by a plurality of sections; b. moving means for moving said sections toward and away from a position in which said sections sealingly engage each other and jointly constitute a continuous wall formed with an upwardly directed opening, said wall bounding a cavity in the mold; c. feed means for delivering a body of fluid glass into said cavity by gravity, said feed means including a chute member downwardly inclined toward said opening and having a lowermost portion spaced from said opening in a vertically upward direction; d. a source of a liquid lubricating and parting agent; e. a source of gas under pressure higher than atmospheric pressure; and f. atomizing means connected to said sources for atomizing said agent in said gas, and for delivering the atomized agent to said cavity through said opening; 1. said atomizing means including a spraying nozzle fixedly mounted in upwardly spaced relationship to said opening, 2. said nozzle having a spraying orifice closely adjacent said lowermost portion and directed toward said orifice obliquely to the vertical direction of delivery of said body of fluid glass.
Claim 2
Dependent Claim
193 words
A glass molding apparatus comprising, in combination: a. a mold constituted by a plurality of sections; b. moving means for moving said sections toward and away from a position in which said sections sealingly engage each other and jointly constitute a continuous wall formed with an upwardly directed opening, said wall bounding a cavity in the mold; c. feed means for delivering a body of fluid glass into said cavity by gravity, said feed means including a chute member downwardly inclined toward said opening and having a lowermost portion spaced from said opening in a vertically upward direction; d. a source of a liquid lubricating and parting agent; e. a source of gas under pressure higher than atmospheric pressure; and f. atomizing means connected to said sources for atomizing said agent in said gas, and for delivering the atomized agent to said cavity through said opening; 1. said atomizing means including a spraying nozzle fixedly mounted in upwardly spaced relationship to said opening, 2. said nozzle having a spraying orifice closely adjacent said lowermost portion and directed toward said orifice obliquely to the vertical direction of delivery of said body of fluid glass.
Claim 3
Dependent Claim
29 words
said nozzle having a spraying orifice closely adjacent said lowermost portion and directed toward said orifice obliquely to the vertical direction of delivery of said body of fluid glass.
Claim 4
Dependent Claim
29 words
said nozzle having a spraying orifice closely adjacent said lowermost portion and directed toward said orifice obliquely to the vertical direction of delivery of said body of fluid glass.
Claim 5
Dependent Claim
52 words
An apparatus as set forth in claim 1, further comprising suction means, said mold, when in said position, having a bottom downwardly spaced in said cavity from said opening, said suction means including a conduit terminating in said bottom for evacUating said cavity during delivery of said atomized agent from said orifice.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |