Patent US3851615A successfully refreshed from Google Patents.
US3851615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road marker
Assignee: PRESISJON MEK VERKSTED
•
Filing: 1973-07-13
•
Granted: 1974-12-03
•
Expires: 1993-07-13
Abstract
Abstract A road marker for reflective devices employed on the sides of highways is disclosed. The road marker is readily adjustable for angle and height and is readily severable to prevent substantial damage to a vehicle coming into contact therewith.
Inventors
- 👤 C Grundvig
- 👤 B Thorvaldsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:54
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/631; E01F9/642; E01F9/646; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32681
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
191 words
A road marker comprising: a. an upper portion comprising at least two member sections which are telescopically movable with respect to each other; b. means for fixedly positioning each telescopic section with respect to each adjacent telescopic section; c. a lower portion comprising an elongated member of sufficient strength to be driven into the ground; d. a ball joint joining said upper and lower portions, said ball joint comprising two spherically shaped members, one of which is spherically shaped on its interior and the other of which is spherically shaped on its exterior, said members being separable but being adapted to be coupled together in cooperative relationship for axial movement of said upper and lower portions, one of said spherical ball joint members being rigidly affixed to the upper portion of the road marker and the other of said spherical ball joint members being rigidly affixed to the lower portion of said road marker; e. means for fixedly positioning the ball joint members with respect to each other; and f. a member affixed to the other end of said upper portion from the ball joint end, said member being the marker.
Claim 2
Dependent Claim
191 words
A road marker comprising: a. an upper portion comprising at least two member sections which are telescopically movable with respect to each other; b. means for fixedly positioning each telescopic section with respect to each adjacent telescopic section; c. a lower portion comprising an elongated member of sufficient strength to be driven into the ground; d. a ball joint joining said upper and lower portions, said ball joint comprising two spherically shaped members, one of which is spherically shaped on its interior and the other of which is spherically shaped on its exterior, said members being separable but being adapted to be coupled together in cooperative relationship for axial movement of said upper and lower portions, one of said spherical ball joint members being rigidly affixed to the upper portion of the road marker and the other of said spherical ball joint members being rigidly affixed to the lower portion of said road marker; e. means for fixedly positioning the ball joint members with respect to each other; and f. a member affixed to the other end of said upper portion from the ball joint end, said member being the marker.
Claim 3
Dependent Claim
14 words
The road marker of claim 1 wherein the elongated member is made of steel.
Claim 4
Dependent Claim
18 words
The road marker of claim 2 wherein the elongated member has helically positioned protrusions on the surface thereof.
Claim 5
Dependent Claim
12 words
The road marker of claim 1 wherein the telescoping members are plastic.
Claim 6
Dependent Claim
12 words
The road marker of claim 4 wherein the telescoping members are polyethylene.
Claim 7
Dependent Claim
14 words
The road marker of claim 1 wherein the upper ball joint member is plastic.
Claim 8
Dependent Claim
14 words
The road marker of claim 6 wherein the lower ball joint member is plastic.
Claim 9
Dependent Claim
23 words
The road marker of claim 1 wherein one of the spherical members has a shoulder to aid in severability of the ball joint.
Claim 10
Dependent Claim
24 words
The road marker of claim 1 wherein one of the spherical ball joint members has slits to facilitate joining of the ball joint members.
Claim 11
Dependent Claim
21 words
The road marker of claim 1 wherein the means for joining the upper and lower ball joint members comprises an O-clamp.
Claim 12
Dependent Claim
17 words
The road marker of claim 1 wherein the member of part (f) is trapezoidal in cross section.
Claim 13
Dependent Claim
12 words
The road marker of claim 1 wherein the telescoping sections comprise tubes.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |