US4153103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum tank
Assignee: Individual
•
Filing: 1977-10-25
•
Granted: 1979-05-08
•
Expires: 1997-10-25
Abstract
Abstract A vacuum tank or the like, especially for the storage of heat for a long period of time, comprising an outer pressure shell and an inner shell having an evacuated intermediate space. The pressure shell is formed of concrete and equipped with a metal covering bearing thereagainst. Support elements or anchoring means arranged at the metal covering are anchored in the pressure shell. The inner shell is formed of a compression resistant material.
Inventors
- 👤 Emil Bachli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:48
CPC Classifications
F; F28; F28D; F28D20/00; F28D20/0034; F28D20/0043; B; B65; B65D; B65D90/00; B65D90/02; B65D90/06; Y; Y02; Y02E; Y02E60/00; Y02E60/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
83 words
A vacuum tank, especially for the storage of heat over a long period of time, comprising: an outer pressure shell; an inner shell spaced from said outer pressure shell; said outer pressure shell and said spaced inner shell forming therebetween a permanently evacuated intermediate space; said pressure shell being formed of concrete: a metal covering tightly bearing at the pressure shell; support means for the metal covering and anchored in the pressure shell; and said inner shell being formed of a compression-resistant material.
Claim 2
Dependent Claim
83 words
A vacuum tank, especially for the storage of heat over a long period of time, comprising: an outer pressure shell; an inner shell spaced from said outer pressure shell; said outer pressure shell and said spaced inner shell forming therebetween a permanently evacuated intermediate space; said pressure shell being formed of concrete: a metal covering tightly bearing at the pressure shell; support means for the metal covering and anchored in the pressure shell; and said inner shell being formed of a compression-resistant material.
Claim 3
Dependent Claim
21 words
The vacuum tank as defined in claim 1, further including: heat-reflecting means arranged between the pressure shell and the inner shell.
Claim 4
Dependent Claim
35 words
The vacuum tank as defined in claim 1, further including: heat-reflecting means arranged between the pressure shell and the inner shell; fluid-conducting pipe coils provided for the heat-reflecting means for the removal of radiant heat.
Claim 5
Dependent Claim
31 words
The vacuum tank as defined in claim 1, wherein: said support means comprise anchoring elements arranged between the metal covering and the pressure shell and constituted by pre-formed reinforcing steel elements.
Claim 6
Dependent Claim
20 words
The vacuum tank as defined in claim 1, wherein: said metal covering comprises profiled structure for increasing the strength thereof.
Claim 7
Dependent Claim
22 words
The vacuum tank as defined in claim 1, further including: an insulating layer disposed between the pressure shell and the metal covering.
Claim 8
Dependent Claim
38 words
The vacuum tank as defined in claim 5, further including: an insulating layer disposed between the pressure shell and the metal covering; and reinforcement means uniformly distributed over the entire length of the tank for facilitating transport thereof.
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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |