US4435310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 14:25
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
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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 |