US4147750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for eliminating shrinkage cavities in cast cosmetic sticks and similar products
Assignee: Signal Investment and Management Co
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Filing: 1978-07-24
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Granted: 1979-04-03
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Expires: 1998-07-24
Abstract
Abstract Prepares a wax-based applicator stick by pouring a melt of said wax-based material into a dispenser container, allowing said material to cool to a semi-solid state, inserting a tubular probe into the center of said mass, withdrawing the same to form a cavity and then flaming the mass to eliminate the cavity so formed.
Inventors
- 👤 Navin Geria
- 👤 George Shaleesh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:32
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/24; B29C67/241; B29C39/00; B29C39/02; B29C39/22; B29C39/40; B29L; B29L2031/00; B29L2031/06; Y; Y10; Y10S; Y10S425/00; Y10S425/032
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
171 words
In a process for forming a wax-based stick applicator of the type comprising a waxy type carrier in which is distributed the ingredient or ingredients that are to be applied and that comprises forming a melt of said waxy type carrier containing said ingredient or ingredients and pouring salt melt into the opened portion of a dispenser container for said stick the improvement which comprises: (a) cooling said melt in said container portion until it forms a mass having a semi-solid consistency; (b) inserting a hollow tubular probe into said mass at about the center of the surface thereof and for a distance sufficient to encounter any voids that may have developed in said mass; (c) withdrawing said probe from said semi-solid mass whereby a cavity is formed in said mass extending downwardly from the surface thereof; and (d) heating said semi-solid mass to a temperature that is sufficiently high so that said material in said container portion melts, flows into and fills up the cavity formed in step (c) above.
Claim 2
Dependent Claim
171 words
In a process for forming a wax-based stick applicator of the type comprising a waxy type carrier in which is distributed the ingredient or ingredients that are to be applied and that comprises forming a melt of said waxy type carrier containing said ingredient or ingredients and pouring salt melt into the opened portion of a dispenser container for said stick the improvement which comprises: (a) cooling said melt in said container portion until it forms a mass having a semi-solid consistency; (b) inserting a hollow tubular probe into said mass at about the center of the surface thereof and for a distance sufficient to encounter any voids that may have developed in said mass; (c) withdrawing said probe from said semi-solid mass whereby a cavity is formed in said mass extending downwardly from the surface thereof; and (d) heating said semi-solid mass to a temperature that is sufficiently high so that said material in said container portion melts, flows into and fills up the cavity formed in step (c) above.
Claim 3
Dependent Claim
39 words
A process according to claim 1 in which said probe is inserted into said semi-solid mass for a distance within the range of from about 3/4 of an inch to 2 inches below the surface of said semi-solid mass.
Claim 4
Dependent Claim
52 words
A process according to claim 1 or 2 in which said container portion is provided with a centrally disposed post that extends upwardly from the bottom of said container portion and said tubular probe is inserted into said container portion in a fashion so that said probe surrounds said centrally disposed post.
Claim 5
Dependent Claim
23 words
A process according to claim 3 in which said stick is an antiperspirant stick that includes an effective amount of an antiperspirant material.
Claim 6
Dependent Claim
40 words
A process according to claim 3 in which said centrally disposed post is threaded along substantially its entire length and in which said container is also provided with a threaded traveller member that rides up and down on said post.
Claim 7
Dependent Claim
21 words
A process according to claim 3 in which said tubular probe has an internal diameter of about 0.220 to 0.600 inches.
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) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |