Patent US3843299A successfully refreshed from Google Patents.
US3843299A
Expired / Lapsed
US
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Device for shaping spherical pellets
Assignee: Individual
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Filing: 1972-09-01
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Granted: 1974-10-22
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Expires: 1992-09-01
Abstract
Abstract A device for shaping spherical pellets comprises at least one pair of rotatable rollers or drums having parallel axes of rotation, disposed adjacent to each other by their lateral cylindrical surfaces. Provision is made on the lateral drum surfaces for circular flutes or cannelures arranged in pairs opposite each other so as to form a row of shaping grooves that are circular in cross section. Some of the circular portions of each pair of cannelures, arranged asymmetrically with respect to their common middle diametral plane, transversal to the drums, feature a higher coefficient of friction as compared to the rest of the cannelure surfaces.
Inventors
- 👤 V Bochanov
- 👤 V Minchenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:07
CPC Classifications
B; B29; B29B; B29B9/00; B29B9/02; B01; B01J; B01J2/00; B01J2/22; B30; B30B; B30B11/00; B30B11/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
A device for shaping spherical pellets, comprising: at least one pair of rotatable rollers having parallel axes of rotation and being disposed adjacent each other by their lateral cylindrical surfaces; open circular cannelures, semicylindrical in cross section, provided on said lateral roller surfaces with depressions, and located thereon in opposite pairs to form a row of shaping grooves, circular in cross section; halves of said cannelures, that are arranged asymmetrically with respect to their common middle diametral planes, transversal to said rollers, having a higher coefficient of friction than other halves of said cannelures.
Claim 2
Independent Claim
94 words
A device for shaping spherical pellets, comprising: at least one pair of rotatable rollers having parallel axes of rotation and being disposed adjacent each other by their lateral cylindrical surfaces; open circular cannelures, semicylindrical in cross section, provided on said lateral roller surfaces with depressions, and located thereon in opposite pairs to form a row of shaping grooves, circular in cross section; halves of said cannelures, that are arranged asymmetrically with respect to their common middle diametral planes, transversal to said rollers, having a higher coefficient of friction than other halves of said cannelures.
Claim 3
Dependent Claim
29 words
The device as defined in claim 1, wherein the contours of said cannelures are formed by separate members made of materials having different values of the coefficient of friction.
Claim 4
Dependent Claim
16 words
The device as defined in claim 2, wherein said members are in the form of disks.
Claim 5
Dependent Claim
16 words
The device as defined in claim 2, wherein said members are in the form of rings.
Claim 6
Dependent Claim
57 words
The device as defined in claim 2, wherein said cannelures are formed by two of said members, the butts of which are located at the centers of said depressions, whereas others of said members, belonging to different ones of said rollers and located opposite each other, are made of the materials which have the different coefficient values.
Claim 7
Dependent Claim
24 words
A device as defined in claim 5, wherein said members have each two half cannelures, arranged symmetrically with respect to the middle diametral planes.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |