US4022266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for electrohydraulic knockout of casting cores
Assignee: Individual
•
Filing: 1976-06-14
•
Granted: 1977-05-10
•
Expires: 1996-06-14
Abstract
Abstract The installation comprises a liquid container and an electrode holder located above said container and mounted with a provision for moving the electrode to the preset position relative to the casting. The container shell is made of two telescopically jointed parts with a pneumatic seal on the joint. Secured rigidly at the level of the upper face of the lower part of the shell is a casting support. A special mechanism delivers the casting onto the support and removes it therefrom. The casting is placed on the support with the upper part of the shell lowered which allows the positioning of the electrodes above the casting to be controlled visually. Then the movable part of the shell is raised, filled with water so as to cover the casting completely, and the cores are knocked out.
Inventors
- 👤 Georgy Ottovich Vershinsky
- 👤 Evgeny Alexeevich Perfiliev
- 👤 Georgy Dmitrievich Kharlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:27
CPC Classifications
B; B22; B22D; B22D29/00; B22D29/001; B22D29/007; B22D29/008
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
An installation for electrohydraulic knockout of casting cores comprising: a liquid in the form of a container shell consisting of a movable upper part and a fixed lower part, both parts being jointed telescopically with each other so that in the extended position the space of the upper part supplements that of the lower part and communicates with it; a pneumatic seal located on the joint between said parts of said shell; a casting support located practically level with the upper face of said lower part of the container shell and fixed rigidly in position; a mechanism for delivering the casting on, and removing it from, said support; at least one electrode holder mounted above said container shell with a provision for moving the electrode to a preset position relative to the casting core; and a hydraulic cylinder for moving vertically the upper part of said liquid container shell.
Claim 2
Dependent Claim
149 words
An installation for electrohydraulic knockout of casting cores comprising: a liquid in the form of a container shell consisting of a movable upper part and a fixed lower part, both parts being jointed telescopically with each other so that in the extended position the space of the upper part supplements that of the lower part and communicates with it; a pneumatic seal located on the joint between said parts of said shell; a casting support located practically level with the upper face of said lower part of the container shell and fixed rigidly in position; a mechanism for delivering the casting on, and removing it from, said support; at least one electrode holder mounted above said container shell with a provision for moving the electrode to a preset position relative to the casting core; and a hydraulic cylinder for moving vertically the upper part of said liquid container shell.
Claim 3
Dependent Claim
45 words
An installation according to claim 1 wherein the length of the movable upper part of the container shell is selected so that in the extended position its upper face would rise approximately 0.6 m above the uppermost point of the casting located in the installation.
Claim 4
Dependent Claim
82 words
An installation according to claim 1 wherein the lower part of the container shell has a bell section whose volume is nearly equal to that of the extended upper part of the container shell and communicates with it and with a source of compressed air, said source ensuring a supply of air sufficient for forcing liquid out of the bell section and into the extended upper part said bell section being provided with an air admission valve and an air discharge valve.
Claim 5
Dependent Claim
44 words
An installation according to claim 3 wherein said bell section of the shell is formed between the wall of the lower part of the container shell and the vertical circular partition arranged coaxially with said wall and secured practically level with its upper face.
References Cited (Backward Citations)
SU212470A1
Cited
DE1111901B
Cited
SU126585A1
Cited
GB1303223A
Cited
GB1312173A
Cited
US3845806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |