US3743468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making shaped bodies
Assignee: Vereinigte Aluminium Werke AG
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Filing: 1971-03-22
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Granted: 1973-07-03
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Expires: 1991-03-22
Abstract
Abstract An apparatus for producing coherent shaped bodies from granular material. The granular material is confined in a mold and the mold is subjected to vibratory motions requisite for compacting the granular material. In accordance with the invention the frequency of the vibratory motions is continuously varied.
Inventors
- 👤 G Helmrich
- 👤 F Wulfing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/02; B30B11/022; B06; B06B; B06B1/00; B06B1/10; B06B1/16; B22; B22C; B22C15/00; B22C15/10; B22F; B22F3/00; B22F3/02; B22F3/03; B28; B28B; B28B1/00; B28B1/08; B28B3/00; B28B3/02; B28B3/022
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
164 words
An apparatus for compacting granular material so that the latter will be transformed into a coherent body, comprising a mold adapted to accommodate a quantity of granular material and having an open top; a weight received in said mold through said open top so as to rest on granular material accommodated in said mold; a vibratory platform supporting said mold; a traverse above said open top of said mold and rigidly mounted on said vibratory platform; fluid-operated pressure-exerting means mounted on said traverse and operative for reacting against the same and exerting pressure upon said weight resting on the granular material; a pair of rotatable imbalanced masses connected with said vibratory platform for imparting vibrations to the latter in response to rotation of said masses; drive means associated with said rotatable masses for imparting rotary movement thereto; and control means for continuously varying the speed of rotation of said rotary masses to thereby continuously vary the frequency of vibrations imparted to said vibratory platform.
Claim 2
Independent Claim
164 words
An apparatus for compacting granular material so that the latter will be transformed into a coherent body, comprising a mold adapted to accommodate a quantity of granular material and having an open top; a weight received in said mold through said open top so as to rest on granular material accommodated in said mold; a vibratory platform supporting said mold; a traverse above said open top of said mold and rigidly mounted on said vibratory platform; fluid-operated pressure-exerting means mounted on said traverse and operative for reacting against the same and exerting pressure upon said weight resting on the granular material; a pair of rotatable imbalanced masses connected with said vibratory platform for imparting vibrations to the latter in response to rotation of said masses; drive means associated with said rotatable masses for imparting rotary movement thereto; and control means for continuously varying the speed of rotation of said rotary masses to thereby continuously vary the frequency of vibrations imparted to said vibratory platform.
Claim 3
Dependent Claim
17 words
An apparatus as defined in claim 1; further comprising connecting means connecting said weight with said platform.
Claim 4
Dependent Claim
32 words
An apparatus as defined in claim 2, wherein said connecting means resiliently connects said weight with said platform with at least some freedom of movement relative to said platform and said mold.
Claim 5
Dependent Claim
17 words
An apparatus as defined in claim 1, said pressure-exerting means comprising a hydraulic cylinder and piston arrangement.
Claim 6
Dependent Claim
17 words
An apparatus as defined in claim 1, said pressure-exerting means comprising a pneumatic cylinder and piston arrangement.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |