Patent US4177233A successfully refreshed from Google Patents.
US4177233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming side-wall strip in a tube
Assignee: Bridgestone Firestone Inc
•
Filing: 1978-04-25
•
Granted: 1979-12-04
•
Expires: 1998-04-25
Abstract
Abstract Method for making a tire whose white sidewall portion is created by, selectively, providing a circumferential groove in the molded tire, buffing the surfaces of the groove, placing an adhesive in the groove, heating the tire about 138° C. to dry the adhesive, bringing the tire temperature to about 100° C. and, while rotating the tire with the groove in a substantially horizontal plane, directing a stream of white polyurethane stock into the groove by means of an applicator which is formed to direct the stock in differing volumes into the bottom of the groove and laterally against its corners and sides; the white sidewall strip so formed has the shape of a concave meniscus.
Inventors
- 👤 Durward T. Roberts, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:13
CPC Classifications
B; B29; B29C; B29C39/00; B29C39/02; B29C39/12; B29D; B29D30/00; B29D30/06; B29D30/72; B29D2030/728
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
The method of manufacturing a tire which comprises providing a tire with a sidewall having a circumferential groove therein, mounting said tire with said groove lying in a substantially horizontal plane and, while rotating said tire, applying a major portion of a fluid stream of elastomer into the corners of said groove, and positively directing lateral portions of the stream against the side surfaces of said groove, forming a strip in said sidewall having a concave meniscus.
Claim 2
Independent Claim
77 words
The method of manufacturing a tire which comprises providing a tire with a sidewall having a circumferential groove therein, mounting said tire with said groove lying in a substantially horizontal plane and, while rotating said tire, applying a major portion of a fluid stream of elastomer into the corners of said groove, and positively directing lateral portions of the stream against the side surfaces of said groove, forming a strip in said sidewall having a concave meniscus.
Claim 3
Dependent Claim
13 words
The method of claim 1, and heating the tire to about 100° C.
Claim 4
Dependent Claim
20 words
The method of claim 1, and the further step of directing a flame against the elastomer, to smooth its surface.
Claim 5
Dependent Claim
19 words
The method of claim 1, and the further step of buffing the bottom and side surfaces of said groove.
Claim 6
Dependent Claim
17 words
The method of claim 4, and the further step of applying an adhesive to the buffed groove-surfaces.
Claim 7
Dependent Claim
26 words
The method of claim 5, and the further steps of heating the tire to dry said adhesive, and thereafter cooling the tire to about 100° C.
Claim 8
Dependent Claim
13 words
The method of claim 6, wherein said heating proceeds to about 138° C.
Claim 9
Independent Claim
181 words
The method of manufacturing a tire which comprises providing a tire with a tread portion and sidewalls terminating in inextensible beads, a said sidewall having a groove therein concentric with said beads, mounting and rotating said tire with said groove lying in a substantially horizontal plane, buffing the bottom and side surfaces of said groove, applying an adhesive to said surfaces, heating the tire to about 138° C. to dry said adhesive, cooling the tire to about 100° C. and, while continuing to rotate said tire, inserting a nozzle into said groove and applying a major portion of a stream of liuid polyurethane into the corners of said groove, and positively directing lateral portions of the stream against the side surfaces of said groove, and immediately thereafter directing a flame against said polyurethane to smooth the surface thereof, heated surfaces of the groove causing the polyurethane to set up and produce a strip extending in a concave meniscus from the outer margin of one side surface of the groove to the outer margin of the opposing side surface of the groove.
Claim 10
Independent Claim
181 words
The method of manufacturing a tire which comprises providing a tire with a tread portion and sidewalls terminating in inextensible beads, a said sidewall having a groove therein concentric with said beads, mounting and rotating said tire with said groove lying in a substantially horizontal plane, buffing the bottom and side surfaces of said groove, applying an adhesive to said surfaces, heating the tire to about 138° C. to dry said adhesive, cooling the tire to about 100° C. and, while continuing to rotate said tire, inserting a nozzle into said groove and applying a major portion of a stream of liuid polyurethane into the corners of said groove, and positively directing lateral portions of the stream against the side surfaces of said groove, and immediately thereafter directing a flame against said polyurethane to smooth the surface thereof, heated surfaces of the groove causing the polyurethane to set up and produce a strip extending in a concave meniscus from the outer margin of one side surface of the groove to the outer margin of the opposing side surface of the groove.
References Cited (Backward Citations)
US1741997A
Cited
US2412429A
Cited
US2739352A
Cited
US2960425A
Cited
US3218208A
Cited
US3449201A
Cited
US3424836A
Cited
GB1215829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |