Patent US4435310A successfully refreshed from Google Patents.
US4435310A
Expired / Lapsed
US
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Manufacture of multicolored detergent bars having sinusoidal striping
Assignee: Lever Brothers Co
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Filing: 1981-11-16
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Granted: 1984-03-06
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Expires: 2001-11-16
Abstract
Abstract Striped detergent bars can be manufactured by several methods. The application of torque to a striped extruded log provides a bar with a spiral striping. The present invention proposes reversal of torque so that a sinusoidal striping is present on the bar.
Inventors
- 👤 Michael R. Lowry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:33
CPC Classifications
C; C11; C11D; C11D13/00; C11D13/14; C11D13/18; C11D13/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A method of manufacturing detergent bars having curved surface striping wherein a continuous log of a longitudinally striped detergent mass is extruded from a nozzle and the log is subjected to torque about the longitudinal axis at a station spaced from the nozzle with subsequent cutting into billets and stamping to form bars, characterized in that the torque is reversed to provide a reversing spiral striping on the log and at least a half of a cycle of striping of substantially sinusoidal form along the longitudinal axis of the bar.
Claim 2
Independent Claim
90 words
A method of manufacturing detergent bars having curved surface striping wherein a continuous log of a longitudinally striped detergent mass is extruded from a nozzle and the log is subjected to torque about the longitudinal axis at a station spaced from the nozzle with subsequent cutting into billets and stamping to form bars, characterized in that the torque is reversed to provide a reversing spiral striping on the log and at least a half of a cycle of striping of substantially sinusoidal form along the longitudinal axis of the bar.
Claim 3
Dependent Claim
18 words
A method according to claim 1 wherein the bar manufactured has at least one cycle on the surface.
Claim 4
Dependent Claim
16 words
A method according to claim 1 wherein the sectional shape of the extruded log is circular.
Claim 5
Dependent Claim
19 words
A method according to claim 1 wherein there is no rest period between the periods when torque is reversed.
References Cited (Backward Citations)
US3180912A
Cited
GB1148273A
Cited
GB1326258A
Cited
GB1387567A
Cited
GB1387601A
Cited
US3899566A
Cited
GB1437323A
Cited
FR2292764B1
Cited
US4041119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |