IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0789202
(2004-02-27)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
3 |
초록
▼
High fence supports can be expensive, difficult to ship, and awkward to install. Often, and particularly for the control of deer, it is desirable to increase the height of existing fence that uses steel T-posts for support. The T-post extender combined with a steel T-post becomes a high fence suppor
High fence supports can be expensive, difficult to ship, and awkward to install. Often, and particularly for the control of deer, it is desirable to increase the height of existing fence that uses steel T-posts for support. The T-post extender combined with a steel T-post becomes a high fence support useful for supporting high fence. A T-post extender consists of a longitudinal element, typically a length of steel rebar, and a stop element, typically a washer welded to the longitudinal element at a selected location along its length. For existing T-post fence supports, the T-post extender is slipped into place alongside the top of the T-post where it is captured laterally by existing wire ties and vertically by the stop element resting against the top of the T-post under the force of gravity. This arrangement has cost, installation, and shipping advantages both in new high fence construction and in the case where the height of existing T-post supported fence must be increased.
대표청구항
▼
The invention claimed is: 1. A high fence support comprising: a T-post extender comprising an elongated longitudinal element having a longitudinal axis and an exterior surface that is substantially a cylinder, the longitudinal axis being defined as the locus of points that are the centroids of all
The invention claimed is: 1. A high fence support comprising: a T-post extender comprising an elongated longitudinal element having a longitudinal axis and an exterior surface that is substantially a cylinder, the longitudinal axis being defined as the locus of points that are the centroids of all cross sections of the longitudinal element, the maximum extent of any cross section measured from its centroid to any point on the periphery of the cross section being about 쩌 inch, the longitudinal element being able to withstand bending moments in any direction perpendicular to the longitudinal axis of at least 200 pound-inch, the T-post extender comprising also a single stop element surrounding the longitudinal element, the stop element in a selected position along the longitudinal element, the selected position being relative to a first end of the longitudinal element, the stop element having maximum extent in the longitudinal axial direction of less than about 2 inches, and, when the stop element and a straight line that is a linear least squares fit to the longitudinal axis in the region of the stop element are projected onto any plane having a normal perpendicular to the straight line, the stop element at substantially its end in the longitudinal direction nearest the first end of the longitudinal element has a projected profile that extends at least 쩍 inch in each of the two radially opposed directions measured from the projected straight line, the T-post extender stop element having an attachment means for fixing the stop element to the longitudinal element at the selected position; and a steel T-post with one or more wire ties, the steel T-post having an upper end and having cross sections substantially in the shape of a T, the T having a stem and an over-bar, one end of the stem of the T meeting the over-bar of the T at its center and at substantially right angles, the steel T-post having one or more wire ties each on the T-post at substantially a cross section of the T-post near its upper end, each wire tie either completely surrounding the T-post or in combination with existing fence wire completely surrounding the T-post, the interstitial space between the T-post and each wire tie formed by the stem of the T, the over-bar of the T, and the wire tie being sufficient to accept the first end of the T-post extender longitudinal element; wherein the T-post extender is secured onto the T-post within the interstitial spaces between the T-post and wire ties, the T-post extender being held laterally by the wire ties, the T-post extender in position alongside the upper part of the T-post and held vertically by gravity, wherein a lowermost surface of the T-post extender stop element is in contact with the top most surface of the T-post, such that the T-post extender is held vertically against gravity and a portion of the T-post extender extends above the T-post. 2. The T-post extender of claim 1 wherein the longitudinal element is a length of steel rebar, the stop element is a steel flat washer, and the attachment means for fixing the stop element to the longitudinal element at the selected position is by welding the flat washer to the rebar. 3. The T-post extender of claim 2 wherein the rebar is 쩍 inch diameter, and the steel flat washer has an interior diameter of about 쩍 inch that is sufficient for the steel flat washer to slide over the rebar into position for attachment by welding. 4. The T-post extender of claim 1 wherein the attachment means for fixing the stop element to the longitudinal element is adjustable, whereby the stop element may be fixed to the longitudinal element at a position along the longitudinal element and then reset later to another position. 5. The T-post extender of claim 4 wherein the adjustable attachment means is part of the stop element. 6. The T-post extender of claim 5 wherein the adjustable attachment means includes a thumbscrew. 7. The T-post extender of claim 5 wherein the adjustable attachment means includes an over-centering clamp type device that tightens a sleeve against the longitudinal element. 8. The T-post extender of claim 1 wherein the longitudinal element is a length of steel rebar, the stop element is a piece of flat steel having a face and having cross slots cut through said face in substantially the center of said face and attached to the longitudinal element by pressing it to the desired location along the longitudinal element. 9. The T-post extender of claim 8 wherein the attachment of the stop element to the longitudinal element includes a crimping operation.
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