Patent US3693511A successfully refreshed from Google Patents.
US3693511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road studs
Assignee: MIECZYSLAW TADEUSZ WLADYSLAW M
•
Filing: 1970-12-16
•
Granted: 1972-09-26
•
Expires: 1990-12-16
Abstract
Abstract A reflective road stud or ''cat''s eye'' has a body moulded of flexible and resilient rubber or the like in which at least one reflective element is housed, which element has projections by which it is retained in position and which provide a ''''snap-in'''' fixing utilizing the natural resilience of the body material. The body may have an extensive flat under-surface secured to the road by a suitable adhesive, preferably a thermo-set resin sprayed on to the road surface or an emulsified epoxy resin mortar so that work can continue in wet weather as a dry road surface is not required. The reflective element may be a rigid plastics moulding with rows of inset bead like reflecting lenses.
Inventors
- 👤 Mieczyslaw Tadeusz Wl Medynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:24
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/553
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
33 words
A road stud according to claim 1, wherein the body is moulded from a material of a softness to conform to the road surface while being adhered and to yield on subsequent impact.
Claim 2
Dependent Claim
23 words
A road stud according to claim 1, wherein the body iS moulded from rubber possessing a Shore hardness of between 60 and 80.
Claim 3
Dependent Claim
33 words
A road stud according to claim 1, wherein the body has through holes extending from the underface to assist in venting air during application and adherence of the stud to the road surface.
Claim 4
Dependent Claim
41 words
A road stud according to claim 1, wherein the insert is a plastics strip, at least one of the longer edge faces of the strip being stepped to seat in a matching portion of the lipped recess moulded in the body.
Claim 5
Dependent Claim
40 words
A road stud according to claim 5, wherein each of the longer edge faces of the strip is stepped to provide outwardly projecting lips respectively along the rear of the top edge and along the front of the bottom edge.
Claim 6
Dependent Claim
44 words
A system of road studding comprising road studs according to claim 1, each of the studs, with at least one insert snapped in, being adhered to the road surface by means of a resin of the class comprising thermo-set resin and emulsified epoxy resin.
References Cited (Backward Citations)
US2294930A
Cited
US2515847A
Cited
US3392639A
Cited
US3499371A
Cited
US3409344A
Cited
US3516337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |