Patent US5123569A successfully refreshed from Google Patents.
US5123569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for melting and injecting wax for the manufacture of wax parts in broken-mould casting
Assignee: Individual
•
Filing: 1991-02-06
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Granted: 1992-06-23
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Expires: 2011-02-06
Abstract
Abstract The invention relates to a device (1) for melting and injecting wax for the manufacture of wax parts in broken-mould casting. The device (1) comprises a wax boiler (2) having a wax-injection nozzle. The boiler being provided with a heating device (3) for melting the wax and keeping it molten. The wax boiler (2) is pressure-sealed with a removable lid (5) and has a pressure inlet connected to a pressure source (33). Furthermore, a deaeration valve (13) is provided on the lid. The wax boiler (2) is connected via a wax-replenishing channel (15) to a wax-premelting container and wax reservoir (14) containing a heating device (16). A shut-off valve (17) is provided in the wax-replenishing channel (15).
Inventors
- 👤 Arno Lindner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:33
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/24; B29C67/241; B22; B22C; B22C7/00; B22C7/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
115 words
Device for melting and injecting wax for the manufacture of wax parts in broken-mould casting, comprising a wax boiler having a wax-injection nozzle, said boiler being provided with a heating device for melting the wax and keeping it molten, and having a removable lid to pressure-seal said boiler and a pressure inlet connected to a pressure line (12) which in turn is connected to a pressure source, said lid being provided with a deaeration valve, characterised in that the wax boiler (2) is connected via a wax-replenishing channel (15) to a wax-premelting container defining a reservoir (14) having a heating device (16), and that the wax-replenishing channel (15) is provided with a shut-off valve (17).
Claim 2
Dependent Claim
115 words
Device for melting and injecting wax for the manufacture of wax parts in broken-mould casting, comprising a wax boiler having a wax-injection nozzle, said boiler being provided with a heating device for melting the wax and keeping it molten, and having a removable lid to pressure-seal said boiler and a pressure inlet connected to a pressure line (12) which in turn is connected to a pressure source, said lid being provided with a deaeration valve, characterised in that the wax boiler (2) is connected via a wax-replenishing channel (15) to a wax-premelting container defining a reservoir (14) having a heating device (16), and that the wax-replenishing channel (15) is provided with a shut-off valve (17).
Claim 3
Dependent Claim
38 words
Device as claimed in claim 1, characterised in that the heating device (16) of the wax reservoir (14) is formed as electric heating lagging (18), and that an adjustable thermostat (19) is provided for the heating lagging (18).
Claim 4
Dependent Claim
28 words
Device as claimed in either one of claims 1 or 2, characterised in that the wax reservoir (14) is disposed within a housing (21) having heat insulation (22).
Claim 5
Dependent Claim
20 words
Device as claimed in claim 1, characterised in that the wax reservoir (14) is sealed with a removable lid (23).
Claim 6
Dependent Claim
20 words
Device as claimed in claim 1, characterised in that the wax reservoir (14) is disposed above the wax boiler (2).
Claim 7
Dependent Claim
35 words
Device as claimed in claim 1, characterised in that there is an outlet (26) from the wax-replenishing channel (15) leading into the wax boiler (2) and disposed within the lid of the wax boiler (2).
Claim 8
Dependent Claim
62 words
Device as claimed in claim 6, characterised in that the wax-replenishing channel (15) is formed in a pipe socket (25), which supports the wax reservoir (14) at a distance above the lid (5) of the wax boiler (2) in such a way that the wax is transported from the wax reservoir (14) to the wax boiler (2) under the force of gravity.
Claim 9
Dependent Claim
17 words
Device as claimed in claim 7, characterised in that the pipe socket (25) has heat insulation (27).
Claim 10
Dependent Claim
33 words
Device as claimed in either one of claims 7 or 8, characterised in that the pipe socket (25) leads out of a funnel-shaped depression (28) in the bottom of the wax reservoir (14).
Claim 11
Dependent Claim
52 words
Device as claimed in claim 9, characterised in that the wax reservoir (14) is formed as a detachable unit that is mounted on the wax boiler (2), the pipe socket (25) being firmly connected to the lid (5) of the wax boiler (2) and forming the support of the wax reservoir (14).
Claim 12
Dependent Claim
24 words
Device as claimed in claim 9, characterised in that the wax boiler (2) and the wax reservoir (14) are contained in a common housing.
Claim 13
Dependent Claim
55 words
Device as claimed in claim 1, characterised in that the lid (23) of the wax reservoir (14) is formed as a pressure-tight lid and that the wax reservoir (14) has an inlet (31) connected to a pressure source (33), the pressure at the inlet (31) being greater than the pressure in the wax boiler (2).
Claim 14
Dependent Claim
61 words
Device as claimed in claim 12, characterised in that the wax reservoir (14) and the wax boiler (2) are connected to a common pressure source (33) and that means for regulating (34) is provided in the pressure line (12) leading to the wax boiler (2), for adjusting the difference in pressure between the wax reservoir (14) and the wax boiler (2).
Claim 15
Dependent Claim
47 words
Device as claimed in either one of claims 12 or 13, characterised in that a level sensor (35) is provided in the wax boiler (2) to detect the level of the wax (8), and that said level sensor (35) includes means for controlling the shut-off valve (17).
Claim 16
Dependent Claim
39 words
Device as claimed in claim 14, characterised in that said means for controlling comprises limit switches (36, 37) corresponding to minimum and maximum levels of said was and connected to an operating element (40) of the shut-off valve (17).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |