TOP-LOCKING BOLLARD

Abstract

A lockable bollard to be anchored into the ground includes a substantially vertical post that is rectangular in cross section, with a base having a base fastening structure extending downwardly to be anchored into the ground to which the post is to be anchored. A control shaft extends substantially the entire length of the post, the control shaft having an operating handle adjacent a top end and having a lower engagement feature adjacent a bottom end designed to selectively engage the base when the shaft is in a predetermined position. A closure is disposed adjacent the top of the post to permit selective access to the operating handle.

Claims

1. A bollard comprising: a substantially vertical post that is irregular in cross section; a base having a base fastening structure extending downwardly to be anchored in the ground in which the post is to be positioned, the base including a base engagement feature; a control shaft extending substantially the entire length of the post, the control shaft having an operating handle adjacent a top end and having a lower engagement feature adjacent a bottom end designed to selectively engage the base when the shaft is in a predetermined rotational position; and a closure disposed adjacent the top of the post to permit selective access to the operating handle.

2. The bollard of claim 1 wherein the post is rectangular in cross section.

3. The bollard of claim 2 wherein the post is square in cross section.

4. The bollard of claim 1 wherein the closure is a hinged plate that may be opened and closed.

5. The bollard of claim 4 wherein the post includes a loop and the plate includes a slot that permits the plate to be closed over the loop to facilitate the use of a padlock in the loop to selectively lock the plate in a closed position.

6. The bollard of claim 1 wherein the base engagement feature is a slot and the lower engagement feature is in the form of a bend in the shaft.

7. The bollard of claim 6 wherein the bend in the shaft is approximately 90 degrees.

8. A lockable bollard to be anchored into the ground, comprising: a substantially vertical post that is rectangular in cross section; a base having a base fastening structure extending downwardly to be anchored into the ground to which the post is to be anchored; a control shaft extending substantially the entire length of the post, the control shaft having an operating handle adjacent a top end and having a lower engagement feature adjacent a bottom end designed to selectively engage the base when the shaft is in a predetermined position; and a closure disposed adjacent the top of the post to permit selective access to the operating handle.

9. The bollard of claim 8 wherein the control shaft is rotatable and the lower engagement feature selectively engages the base, depending on the rotational disposition of the control shaft.

10. The bollard of claim 8 wherein the lower engagement feature includes a first configuration that selectively complements a second configuration in the base.

11. The bollard of claim 10 wherein the lower engagement feature comprises a bend in the shaft and the second configuration comprises a slot in the base.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. 1 is a perspective view of an embodiment showing the base and the post with the top plate open and the handle in an unlocked position;

[0012] FIG. 2 is a side elevation sectional view of the embodiment of FIG. 1, with the base embedded in the ground and the top plate closed over the loop, with the handle in a locked position and showing a padlock in phantom;

[0013] FIG. 3 is a front elevation sectional view corresponding to FIG. 2 except that the handle is in an unlocked position;

[0014] FIG. 4 is an exploded perspective view of a top portion of the depicted embodiment;

[0015] FIG. 5 is an exploded perspective view of a lower portion of the depicted embodiment;

[0016] FIG. 6 is a side elevation sectional view of the upper and mid-portions of the depicted embodiment, with the handle in a locked position;

[0017] FIG. 7 is a side elevation sectional view of the lower portion of the depicted embodiment, with the lower end of the control shaft and mounting rods shown in phantom;

[0018] FIG. 8 is a perspective view of the top portion of the depicted embodiment with the handle in a locked position;

[0019] FIG. 9 is a perspective view of the top portion of the depicted embodiment with the handle in an unlocked locked position;

[0020] FIG. 10 is a top view of the lower engagement portion, showing the control shaft in a locked position; and

[0021] FIG. 11 is a top view of the lower engagement portion, showing the control shaft in a locked position.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT

[0022] In the following detailed description, reference is made to the accompanying drawings which form a part hereof, and in which are shown by way of illustration embodiments that may be practiced. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope. Therefore, the following detailed description is not to be taken in a limiting sense, and the scope of embodiments is defined by the appended claims and their equivalents.

[0023] Various operations may be described as multiple discrete operations in turn, in a manner that may be helpful in understanding embodiments; however, the order of description should not be construed to imply that these operations are order dependent.

[0024] The description may use perspective-based descriptions such as up/down, back/front, and top/bottom. Such descriptions are merely used to facilitate the discussion and are not intended to restrict the application of disclosed embodiments.

[0025] The disclosed embodiment may be better understood by making reference to the figures. The depicted embodiment is identified at 10 and, as shown in FIG. 1, is comprised of a post 12 and a base 14. Both are shown to be square in cross section but they may be any multi-sided shape such as rectangular with uneven sides. Actually, any shape but round would work, as a round shape might permit the post to be turned in the base to allow unauthorized access. If a round shape is used, a simple system to prevent the post from rotating with respect to the base would normally be included. The foregoing shape will hereafter be described as irregular, thus only limiting the shape to one that is not round in cross section. The term rectangular is used to encompass a figure with four straight sides and four right angles, with equal adjacent sides (as in a square) or unequal adjacent sides.

[0026] Base 14 is designed to be non-movably mounted in the ground such as in concrete 16, with a base top 18 being generally flush with the ground as shown in FIGS. 2 and 3. A pair of anchoring rods 17 may be used to affix the base in position and to prevent rotation in the concrete. In the depicted embodiment anchoring rods 17 are disposed at slightly different elevations. Post 12 typically has mounting rods 20 that extend downwardly into base 14 at apertures 22. The rods may be square, rectangular, angled or any other cross-sectional configuration.

[0027] A rigid shaft 24 extends through most of the length of post 12 and includes a handle 26 adjacent the top end to permit shaft 24 to be rotated. A stationary bar 19 may extend across post 12, through which shaft 24 extends. A bolt 21 may extend through an elongated threaded nut 23 within a sleeve 25 as shown best in FIG. 4. This depicted arrangement is not a necessary feature but facilitates some adjustability in the effective length of shaft 24.

[0028] In the depicted embodiment, the lower end of shaft 24 terminates in a lower engagement feature. In the depicted embodiment, this feature is in the form of a bent extension 28. In the depicted embodiment the bend is at 90 degrees although other lesser angles or configurations may be utilized. The engagement feature may alternatively include any configuration that selectively complements a second configuration in the base. Normally the control shaft is rotatable and the lower engagement feature selectively engages the base, depending on the rotational disposition of the control shaft.

[0029] Shaft 24 normally extends just past a base plate 30 that is mounted such as by bolts 29 to a mounting frame 31 that is securely mounted such as by welding to the inner periphery of base 14. Base plate 30 includes a base engagement feature that complements the configuration of the lower engagement feature of the shaft. In the depicted embodiment with the lower engagement feature taking the form of a 90 degree extension, the base engagement feature may take the form of a simple slot 32. A detent (not shown) may be provided as part of handle 26 so that the handle can easily be rotated by precisely the desired angle (typically 90 degrees) to align extension 28 with slot 32 when desired to unlock post 12 from base 14.

[0030] The upper end of post 12 includes a hinged top plate 34, which includes a top plate slot 36 designed to fit over a loop 38 affixed to the exterior of the post. With top plate 34 closed over the top of post 12, top plate slot 36 fits over loop 38, permitting the operator to place a padlock 39 (shown in phantom) or other locking member through the loop to control access to handle 26. An additional extension lip (not shown) may be provided in top plate 34 to extend over loop 38 and padlock 39 to protect the padlock from the elements.

[0031] To mount bollard 10 in place, base 14 is set in the ground and post 12 is slid into the base with mounting rods irons 20 extending into apertures 22. While mounting the post to the base, handle 26 should be used to adjust shaft 24 and 90 degree extension 28 to unlocked positions so that the extension can fit through slot 32 in base plate 30. Handle 26 can then be turned to lock the shaft to the base, which will securely lock post 12 to base 14. Top plate 34 is then closed over loop 38 and padlock 39 can be fitted into the loop, thus preventing unauthorized access to control handle 26.

[0032] With the bollard in this locked position, the access onto the roadway or path that is being blocked by the bollard will be prevented. In the event an authorized entry needs to be made, padlock 39 is unlocked, top plate 34 is opened, and handle 26 is accessed. To remove post 12 from base 14, handle 26 is rotated until extension 28 is aligned with slot 32 and the post may be lifted from base 14.

[0033] While the foregoing description and the accompanying drawings describe one embodiment of the present invention, variations may be made without departing from the scope of the invention. In any event, it is the following claims and not the foregoing detailed description, which sets forth the scope of this patent.