US3225123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing traffic markers
Assignee: Botts Line Inc
•
Filing: 1961-09-01
•
Granted: 1965-12-21
•
Expires: 1981-09-01
Abstract
No abstract record available.
Inventors
- 👤 Grant A Wiswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:17
CPC Classifications
B; B29; B29C; B29C39/00; E; E01; E01F; E01F9/00; E01F9/50; E01F9/553
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A METHOD OF FORMING TRAFFIC MARKERS AND THE LIKE, COMPRISING MIXING TOGETHER A POLYMER, CATALYST, REFLECTIVE PIGMENT AND GLAS SPHERES TO IMPART RETRO-REFLECTIVITY, DEPOSITING THE MIXTURE INTO MOLDS, PANNING SAID MOLDS TO SETTLE SAID SPHERES TO THE BOTTOM AND OUTSIDE OF SAID MOLDS AND FORM A FLAT BOTTOM OF MIXTURE IN SAID MOLD, SAID PANNING COMPRISING MOVING SAID MOLD IN A HORIZONTAL PLANE IN A CIRCULAR PATH OF .05 TO .25 INCH DIAMETER AT A FREQUENCY OF AROUND 1750 R.P.M. UNTIL SAID GLASS SPHERES ARE WORKED UNIFORMLY TOWARD AND AGAINST THE SURFACE OF SAID MOLD, DEPOSITING A ROUGHENING AGENT ON THE TOP SURFACE OF THE MIXTURE IN SAID MOLDS, HEATING SAID MIXTURE TO CURE SAID POLYMER, SUBJECTING THE MOLDED MARKER TO A BATH OF STRIPPING SOLVENT, AND CLEANING SAID MARKER TO EXPOSE SAID GLASS SPHERES AT THE SURFACE.
Claim 2
Independent Claim
138 words
A METHOD OF FORMING TRAFFIC MARKERS AND THE LIKE, COMPRISING MIXING TOGETHER A POLYMER, CATALYST, REFLECTIVE PIGMENT AND GLAS SPHERES TO IMPART RETRO-REFLECTIVITY, DEPOSITING THE MIXTURE INTO MOLDS, PANNING SAID MOLDS TO SETTLE SAID SPHERES TO THE BOTTOM AND OUTSIDE OF SAID MOLDS AND FORM A FLAT BOTTOM OF MIXTURE IN SAID MOLD, SAID PANNING COMPRISING MOVING SAID MOLD IN A HORIZONTAL PLANE IN A CIRCULAR PATH OF .05 TO .25 INCH DIAMETER AT A FREQUENCY OF AROUND 1750 R.P.M. UNTIL SAID GLASS SPHERES ARE WORKED UNIFORMLY TOWARD AND AGAINST THE SURFACE OF SAID MOLD, DEPOSITING A ROUGHENING AGENT ON THE TOP SURFACE OF THE MIXTURE IN SAID MOLDS, HEATING SAID MIXTURE TO CURE SAID POLYMER, SUBJECTING THE MOLDED MARKER TO A BATH OF STRIPPING SOLVENT, AND CLEANING SAID MARKER TO EXPOSE SAID GLASS SPHERES AT THE SURFACE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |