Patent US4553358A successfully refreshed from Google Patents.
US4553358A
Expired / Lapsed
US
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Post anchor
Assignee: CONSTRUCTION ROBOTICS Inc (AUST) PTY Ltd
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Filing: 1984-09-06
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Granted: 1985-11-19
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Expires: 2004-09-06
Abstract
Abstract A ground anchor for channel posts has an angle iron leg driven into the ground with a creased upright fin shroud strip or strap embracing the apex or corner of the angle iron at the trailing end of the leg and secured to the ends of the sides of the angle iron providing a V-shaped socket or barrel. The channel post straddles the angle iron with its side legs bottomed on the sides of the angle iron and a compression member bottomed on the strip forces the channel post against the angle iron to spread the legs of the post into tight gripping relation with the angle iron locking the post in the socket. The socket is open-ended and the post can slide over the angle iron leg to any desired depth so that a sign mounted on top of the post can be positioned at a selected height above the ground. The angle iron is driven into the ground to a depth sufficient to bury the shroud strip so that the post is the only portion of the assembly projecting above the ground. The spreading of the legs of the post places them under tension so that when the post is struck by a vehicle it will only bend at the impact zone, but will shear at the tensioned zone so that no metal will project above ground.
Inventors
- 👤 Robert F. Deike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:26
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/74; E02D5/80; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/631; E01F9/635; F; F16; F16B; F16B2200/00; F16B2200/10; F16B2200/63; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7062; Y10T403/7064; Y10T403/7066
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
132 words
A ground anchor for channel highway sign posts of the type having a web and side legs which comprises an angle leg having sides and an apex corner with a leading end for driving into the ground and a trailing end, an upright fin forming shroud strip embracing the apex corner and sides at the trailing end of the leg secured to the ends of the sides forming a V-shaped socket for receiving a channel post with the ends of the legs of the channel post bottomed on the sides, and a compression member in the socket bottomed on the strip pressing the legs of the channel post against the sides causing the legs of the post to spread apart and be placed under tension as they are locked in the socket.
Claim 2
Dependent Claim
132 words
A ground anchor for channel highway sign posts of the type having a web and side legs which comprises an angle leg having sides and an apex corner with a leading end for driving into the ground and a trailing end, an upright fin forming shroud strip embracing the apex corner and sides at the trailing end of the leg secured to the ends of the sides forming a V-shaped socket for receiving a channel post with the ends of the legs of the channel post bottomed on the sides, and a compression member in the socket bottomed on the strip pressing the legs of the channel post against the sides causing the legs of the post to spread apart and be placed under tension as they are locked in the socket.
Claim 3
Dependent Claim
31 words
The ground anchor of claim 1 wherein the angle leg is an angle iron strip with the sides at right angles and the apex providing a 90° angle between the legs.
Claim 4
Dependent Claim
44 words
The ground anchor of claim 1 wherein the sign post is adapted to slide freely along the angle leg receiving the apex corner of the leg in the channel thereof and the compression member engages the web along the length thereof in said socket.
Claim 5
Dependent Claim
17 words
The ground anchor of claim 1 wherein the compression member is elongated and extends through the socket.
Claim 6
Dependent Claim
28 words
The ground anchor of claim 1 wherein the shroud strip is canted relative to the angle leg providing a socket converging from top to bottom toward the leg.
Claim 7
Dependent Claim
31 words
The ground anchor of claim 1 wherein the shroud strip is creased providing a V-shaped apex opposite the apex corner of the leg and the compression member fits in said apex.
Claim 8
Dependent Claim
143 words
A ground anchor for sign posts and the like which comprises an elongated angle iron member having sides and an apex corner with a leading end for driving into the ground and a trailing end terminating at ground level, a wide metal ribbon creased to form an apex, diverging legs, and out-turned end flanges welded to the ends of the sides of the angle iron at the ends of the legs thereof at the trailing end of the angle iron to form fins radiating from the angle iron and an open-ended V-shaped socket with the corner of the angle iron spaced from the apex of the ribbon, said socket adapted to freely receive the sign post therethrough bottomed on the angle iron, and a compression strip in said socket pressing the post against the angle iron to lock the post to the leg.
Claim 9
Dependent Claim
143 words
A ground anchor for sign posts and the like which comprises an elongated angle iron member having sides and an apex corner with a leading end for driving into the ground and a trailing end terminating at ground level, a wide metal ribbon creased to form an apex, diverging legs, and out-turned end flanges welded to the ends of the sides of the angle iron at the ends of the legs thereof at the trailing end of the angle iron to form fins radiating from the angle iron and an open-ended V-shaped socket with the corner of the angle iron spaced from the apex of the ribbon, said socket adapted to freely receive the sign post therethrough bottomed on the angle iron, and a compression strip in said socket pressing the post against the angle iron to lock the post to the leg.
Claim 10
Dependent Claim
34 words
The ground anchor of claim 7 wherein the angle iron member is a conventional sized angle iron strip and the socket has a depth substantially less than the length of the angle iron member.
Claim 11
Dependent Claim
43 words
The ground anchor of claim 7 wherein the compression strip is inserted in the socket to such a depth to create a tension stress in the post which will cause the post to fracture at the socket zone when impacted above the zone.
Claim 12
Dependent Claim
32 words
The ground anchor of claim 7 wherein the sign post has a channel with side legs bottomed on the sides of the angle iron which are spread apart by the compression strip.
Claim 13
Dependent Claim
20 words
The ground anchor of claim 7 wherein the ribbon is canted toward the leading end of the angle iron member.
Claim 14
Dependent Claim
222 words
A ground anchor for hat section highway sign posts of the type having a web perforated along its length at spaced intervals, side legs extending from the web and out-turned flanges on the ends of the legs so that fasteners extending through the apertures of the web will bottom a sign against the flanges which comprises a right angle iron leg having a leading end for driving in the ground and a trailing end adapted to be positioned substantially level with the ground, an upright metal strip embracing the trailing end of the leg around the corner and sides thereof and secured thereto to cooperate therewith forming an open-ended V-shaped socket, said socket adapted to freely receive a hat section highway sign post therethrough with the legs of the post bottomed on the outer faces of the sides of the angle iron and with the web and flanges spaced from the strip, and an elongated member forced in said socket between the web of the post and the strip effective to force the legs of the post over the sides of the angle iron spreading the legs apart and placing them under tension creating a shear stress zone at the trailing end of the leg to cause the post to fracture at ground level when impacted by a vehicle or the like.
Claim 15
Dependent Claim
222 words
A ground anchor for hat section highway sign posts of the type having a web perforated along its length at spaced intervals, side legs extending from the web and out-turned flanges on the ends of the legs so that fasteners extending through the apertures of the web will bottom a sign against the flanges which comprises a right angle iron leg having a leading end for driving in the ground and a trailing end adapted to be positioned substantially level with the ground, an upright metal strip embracing the trailing end of the leg around the corner and sides thereof and secured thereto to cooperate therewith forming an open-ended V-shaped socket, said socket adapted to freely receive a hat section highway sign post therethrough with the legs of the post bottomed on the outer faces of the sides of the angle iron and with the web and flanges spaced from the strip, and an elongated member forced in said socket between the web of the post and the strip effective to force the legs of the post over the sides of the angle iron spreading the legs apart and placing them under tension creating a shear stress zone at the trailing end of the leg to cause the post to fracture at ground level when impacted by a vehicle or the like.
Claim 16
Dependent Claim
26 words
The ground anchor of claim 12 wherein the elongated member has a flat face engaging the web of the sign post along a substantial area thereof.
Claim 17
Dependent Claim
22 words
The ground anchor of claim 12 wherein the metal strip has side legs bowed outwardly to increase the size of the socket.
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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) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |