US2695256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight bathtub and production thereof
Assignee: CARL A STRAND
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Filing: 1952-11-12
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Granted: 1954-11-23
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Expires: 1972-11-12
Abstract
No abstract record available.
Inventors
- 👤 Olloqui Valentine V De
- 👤 Carl A Strand
- 👤 Carroll H Van Hartesveldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:43
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C43/14; B29C43/146; A; A47; A47K; A47K3/00; A47K3/02; B29C37/00; B29C37/0025; B29C37/0028; B29C37/0032; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/302; B29C70/34; B29C70/342; B29C2037/0035; B29C43/32; B29C43/36; B29C43/3642; B29C2043/3644; B29C43/10; B29C43/12; B29K; B29K2105/00; B29K2105/25; B29K2105/253; B29K2105/256; B29K2309/00; B29K2309/08; B29L; B29L2031/00; B29L2031/769; B29L2031/7692; Y; Y10; Y10S; Y10S264/00; Y10S264/53; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1031; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T428/00; Y10T428/26; Y10T428/269
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
AS AN ARTICLE OF MANUFACTURE, A LIGHT WEIGHT BATHTUB HAVING A SUITABLY FORMED INTEGRAL BODY OF A LUMINATE COMPOSED OF ONE PART OF GLASS FIBERS EMBEDDED IN TWO PARTS OF NORMALLY RIGID THERMOSET UNSATURATED POLYESTER LAMINATING RESIN, AND HAVING A SMOOTH-SURFACE GLOSSY COATING INTEGRALLY FORMED UPON THE BODY, SAID COATING CONSISTING ESSENTIALLY OF ONE PART OF PIGMENT-SIZE FILLER EMBEDDED IN TWO PARTS OF A THERMOSET UNSATURATED POLYESTER MIXTURE OF EQUAL PARTS OF NORMALLY RIGID AND NORMALLY FLEXIBLE POLYESTERS.
Claim 2
Dependent Claim
78 words
AS AN ARTICLE OF MANUFACTURE, A LIGHT WEIGHT BATHTUB HAVING A SUITABLY FORMED INTEGRAL BODY OF A LUMINATE COMPOSED OF ONE PART OF GLASS FIBERS EMBEDDED IN TWO PARTS OF NORMALLY RIGID THERMOSET UNSATURATED POLYESTER LAMINATING RESIN, AND HAVING A SMOOTH-SURFACE GLOSSY COATING INTEGRALLY FORMED UPON THE BODY, SAID COATING CONSISTING ESSENTIALLY OF ONE PART OF PIGMENT-SIZE FILLER EMBEDDED IN TWO PARTS OF A THERMOSET UNSATURATED POLYESTER MIXTURE OF EQUAL PARTS OF NORMALLY RIGID AND NORMALLY FLEXIBLE POLYESTERS.
Claim 3
Independent Claim
114 words
A METHOD OF FORMING A LIGHT WEIGHT BATHTUB, THAT COMPRISES APPLYING A 0.01-0.02 INCH COATING TO A MIRRORFINISH CONVEX SURFACE OF THE CONTOUR OF THE INSIDE OF THE BATHTUB, SAID COATING BEING COMPOSED OF 10-30% TITANIUM DIOXIDE PIGMENT, 5-15% FINELY GROUND AMORPHOUS SILICA FILLER, A CATALYST MIXTURE OF A METAL DRIER AND A KETONE PEROXIDE, AND 60-70% OF A POLYMERIZABLE POLYESTER MIXTURE OF 50-60% UNSATURATED POLYESTER AND 40-50% SATURATED POLYESTER; THEN COVERING THE COATING WITH A LAYER OF GLASS FIBERS IMPREGNATED WITH TWICE THEIR WEITHT OF POLYMERIZABLE UNSATURATED POLYESTER CONTAINING A METAL DRIER-KETONE PEROXIDE CATALYST MIXTURE; AND FINALLY APPLYING HEAT AND PRESSURE TO THE COATING AND IMPREGNATED GLASS FIBERS TO CURE THE POLYESTERS THEREIN.
Claim 4
Independent Claim
114 words
A METHOD OF FORMING A LIGHT WEIGHT BATHTUB, THAT COMPRISES APPLYING A 0.01-0.02 INCH COATING TO A MIRRORFINISH CONVEX SURFACE OF THE CONTOUR OF THE INSIDE OF THE BATHTUB, SAID COATING BEING COMPOSED OF 10-30% TITANIUM DIOXIDE PIGMENT, 5-15% FINELY GROUND AMORPHOUS SILICA FILLER, A CATALYST MIXTURE OF A METAL DRIER AND A KETONE PEROXIDE, AND 60-70% OF A POLYMERIZABLE POLYESTER MIXTURE OF 50-60% UNSATURATED POLYESTER AND 40-50% SATURATED POLYESTER; THEN COVERING THE COATING WITH A LAYER OF GLASS FIBERS IMPREGNATED WITH TWICE THEIR WEITHT OF POLYMERIZABLE UNSATURATED POLYESTER CONTAINING A METAL DRIER-KETONE PEROXIDE CATALYST MIXTURE; AND FINALLY APPLYING HEAT AND PRESSURE TO THE COATING AND IMPREGNATED GLASS FIBERS TO CURE THE POLYESTERS THEREIN.
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) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |