US3768434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective marker device
Assignee: American Reflector Co Inc
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Filing: 1972-06-12
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Granted: 1973-10-30
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Expires: 1992-06-12
Abstract
Abstract A marker comprises an annulus having a circumferential groove on each edge to receive reflective lenses which face in opposite directions. There are diametrically opposite apertures in the wall of the annulus for installing it on a rod or stake. Friction creating surfaces are interposed in the path of the rod within the annulus to prevent it from sliding on the rod unless forced. In one embodiment a tube that is tapered from both ends and extends diametrically between apertures produces the friction. In another embodiment spring-like plastic members in the annulus bear on the rod to produce friction. Means are provided for stacking markers at different angles on a stake.
Inventors
- 👤 J Pinter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:29
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/604; E01F9/619; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
78 words
A marker device comprising: a. a lens supporting frame having at least a pair of aligned apertures defining a path for a rod, b. means including a friction generating surface in said frame which surface is adjacent a rod receiving path to enable frictional engagement with a rod and to secure the frame thereon in a selected position, c. tubular means interposed between said apertures interiorly of said frame, said friction generating surface being within said tubular means.
Claim 2
Dependent Claim
78 words
A marker device comprising: a. a lens supporting frame having at least a pair of aligned apertures defining a path for a rod, b. means including a friction generating surface in said frame which surface is adjacent a rod receiving path to enable frictional engagement with a rod and to secure the frame thereon in a selected position, c. tubular means interposed between said apertures interiorly of said frame, said friction generating surface being within said tubular means.
Claim 3
Dependent Claim
41 words
The invention set forth in claim 1 wherein; a. said tubular means extends across the interior of the frame between said apertures, said tubular means having an axially tapered bore the smallest diameter part of which comprises said friction generating surface.
Claim 4
Dependent Claim
51 words
The invention set forth in claim 1 wherein; a. said tubular means extends between said apertures interiorly of said frame, said tubular means having axially aligned tapered bores converging toward each other from opposite ends of the tubular means, the region of conVergence of said bores comprising said friction generating surface.
Claim 5
Dependent Claim
73 words
The invention set forth in claim 1 including: a. boss means on opposite sides of said frame means, said boss means having apertures aligned with the apertures in the frame means, b. at least one of said boss means having a recess surrounding its aperture, the other boss means being of such external size and shape as to be receivable in said recess, to thereby enable interlocking of adjacent frames with each other.
Claim 6
Dependent Claim
81 words
A marker device comprising: a. an annulus having circumferential recesses in its opposite edges for accommodating reflective lens means and said annulus having substantially diametrically opposite apertures therein, b. tubular means extending substantially diametrically across said annulus and having an axial bore aligned with said apertures, c. the axial bore being tapered convergingly in directions away from the opposite apertures to produce a region of reduced diameter for frictionally engaging a suitably sized rod that may be passed through said bore.
Claim 7
Dependent Claim
81 words
A marker device comprising: a. an annulus having circumferential recesses in its opposite edges for accommodating reflective lens means and said annulus having substantially diametrically opposite apertures therein, b. tubular means extending substantially diametrically across said annulus and having an axial bore aligned with said apertures, c. the axial bore being tapered convergingly in directions away from the opposite apertures to produce a region of reduced diameter for frictionally engaging a suitably sized rod that may be passed through said bore.
Claim 8
Dependent Claim
62 words
The marker defined in claim 3 including: a. interlock means projecting from one side of the annulus and mating receiving means on a substantially diametrically opposite side of said annulus, whereby the projecting interlock means of one annulus may be received in the mating receiving means of another similar annulus to position said annuli at selected angles with respect to each other.
Claim 9
Dependent Claim
82 words
A marker device comprising: a. a lens supporting frame means having at lease a pair of apertures defining a path for a rod, b. curved spring means in opposed relation to each other within said frame means, corresponding spaced apart surfaces of said spring means constituting friction generating surfaces, the space between said spring means allowing for passing a rod through said apertures and frame means whereby to oppose the resilient force of the spring means and thereby engage the rod frictionally.
Claim 10
Dependent Claim
82 words
A marker device comprising: a. a lens supporting frame means having at lease a pair of apertures defining a path for a rod, b. curved spring means in opposed relation to each other within said frame means, corresponding spaced apart surfaces of said spring means constituting friction generating surfaces, the space between said spring means allowing for passing a rod through said apertures and frame means whereby to oppose the resilient force of the spring means and thereby engage the rod frictionally.
Claim 11
Dependent Claim
68 words
The invention set forth in claim 7 wherein: a. said spring means each having their corresponding one ends fastened to said frame means and each spring means having a free end, b. means extending from said frame means into the vicinity of each of the free ends, whereby when the spring means are parted by a rod passing between them said spring means react against said extending means.
Claim 12
Dependent Claim
68 words
A marker device comprising: a. frame means for supporting a lens, b. means for frictionally engaging said frame means to a shaft, c. means projecting from one exterior side of said frame means and a recess in another side of said frame means, said projecting means having such external size and shape as to be registrable in said recess to thereby enable interlocking adjacent frames with each other.
Claim 13
Dependent Claim
68 words
A marker device comprising: a. frame means for supporting a lens, b. means for frictionally engaging said frame means to a shaft, c. means projecting from one exterior side of said frame means and a recess in another side of said frame means, said projecting means having such external size and shape as to be registrable in said recess to thereby enable interlocking adjacent frames with each other.
Claim 14
Dependent Claim
38 words
The device set forth in claim 9 wherein: a. said projecting means and said recess are both polygonal in cross section, whereby to enable adjacent frames to be engaged and maintained in predetermined angular relationship with each other.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |