US3596628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warning marker
Assignee: UTILITY PRODUCTS Inc
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Filing: 1970-03-23
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Granted: 1971-08-03
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Expires: 1990-03-23
Abstract
Abstract Disclosed herein is a method of making a weighted warning marker wherein the warning marker body is formed about a rigid core, and wherein the rigid core is acted upon to make it nonrigid while it is enclosed within the marker body. Also disclosed is a weighted warning marker made by the above method wherein the core which acts as a weight is composed partly of magnetic material.
Inventors
- 👤 Allen C Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:57
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/70; E01F9/623; E01F9/654; E01F9/688; Y; Y10; Y10S; Y10S428/00; Y10S428/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A warning marker comprising: a. a generally frustoconical body of flexible nonmagnetic material; b. an integral flange extending outwardly from said body and forming a base portion for supporting said body in an upright position; c. said flange having formed therein a cavity containing a granular magnetizable weighting material; d. said magnetizable material being incapable of retaining any significant remanent magnetism.
Claim 2
Dependent Claim
61 words
A warning marker comprising: a. a generally frustoconical body of flexible nonmagnetic material; b. an integral flange extending outwardly from said body and forming a base portion for supporting said body in an upright position; c. said flange having formed therein a cavity containing a granular magnetizable weighting material; d. said magnetizable material being incapable of retaining any significant remanent magnetism.
References Cited (Backward Citations)
US2762328A
Cited
US2863416A
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US2954005A
Cited
GB1058881A
Cited
US3247823A
Cited
US3451368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |