US3840315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making multi layer capacitors
Assignee: Duracell Inc USA
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Filing: 1972-10-30
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Granted: 1974-10-08
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Expires: 1992-10-30
Abstract
Abstract The ceramic layer of multi-layered ceramic capacitors is provided by pressure rolling powders into sheets or films. A machine used to roll the powder utilizes a feed control roll disposed between and in working relationship between a stationary back-up roll and an adjustable compression roll.
Inventors
- 👤 F Fuller
- 👤 J Kirschner
- 👤 R Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:52
CPC Classifications
H; H01; H01G; H01G13/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
A powder rolling machine comprising: a. a base, b. a first pair of spaced upstanding plates carried by said base, c. a first roll rotatably carried by said first pair of plates, d. a second pair of spaced upstanding plates pivotally carried by said first pair of plates, e. coupling means connecting said first and second pair of plates in a spaced predetermined position, f. a second roll rotatably carried by said second pair of plates in spaced relation to said first roll, g. a cartridge carried by said first pair of plates, said cartridge including a rotatably mounted feed control roll disposed between and in working relation to said first and second rolls, h. means supplying powder to a compacting area defined by said second roll and said feed control roll, and i. means applying power driven rotation to said feed control roll.
Claim 2
Dependent Claim
144 words
A powder rolling machine comprising: a. a base, b. a first pair of spaced upstanding plates carried by said base, c. a first roll rotatably carried by said first pair of plates, d. a second pair of spaced upstanding plates pivotally carried by said first pair of plates, e. coupling means connecting said first and second pair of plates in a spaced predetermined position, f. a second roll rotatably carried by said second pair of plates in spaced relation to said first roll, g. a cartridge carried by said first pair of plates, said cartridge including a rotatably mounted feed control roll disposed between and in working relation to said first and second rolls, h. means supplying powder to a compacting area defined by said second roll and said feed control roll, and i. means applying power driven rotation to said feed control roll.
Claim 3
Dependent Claim
26 words
A powder rolling machine according to claim 1 wherein said feed control roll is substantially smaller in diameter than said stationary backup and adjustable compression rolls.
Claim 4
Dependent Claim
27 words
A powder rolling machine according to claim 1 wherein said coupling means comprises a pair of micrometer adjusting means coupling said first and second pair of plates.
Claim 5
Dependent Claim
64 words
A powder rolling machine according in claim 1 wherein said cartridge comprises: a. a pair of spaced blocks adapted to engage said first pair of plates, b. means rotatably journalling said feed control roll in said blocks, said feed control roll extending through and beyond one of said blocks, and c. means coupling said feed control roll to said means applying power driven rotation.
Claim 6
Dependent Claim
28 words
A powder rolling machine according to claim 1 wherein said coupling means comprises a pair of micrometer adjusting means carried by said first and second pair of plates.
Claim 7
Dependent Claim
37 words
A powder rolling machine according to claim 1 wherein said means applying power Driven rotation comprises: a. a motor carried by said base, b. a drive shaft, and c. means coupling said motor to said drive shaft.
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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |