In a stage environment, it may be useful to move scenery. Often, a deck track is used to move the scenery, where the deck track is placed in the floor, and a “dog” extends from the machinery into the floor area. A winch is used to move one or more cables that run under the floor in order to move the scenery along the track.
An embodiment describes a special deck track dog which has a number of different features.
Embodiments describe one or more of the following features. In one embodiment, the size of the receiver for the knife shaped piece can be variable.
Another embodiment describes an improved technique of holding the cable that is run under the floor.
Yet another embodiment describes a device where the cable attachment mechanism are set in a location that line up with the openings in the floor to allow tightening without opening the floor.
Another aspect describes a special through hole so that cable can be run through the device, e.g., to connect to another track dog.
A new universal deck track dog is described. An embodiment has advantages over many existing items including: changeable length “ears” that normally are permanently welded, the ability to clamp to four sizes of cable with changeable grips compared to only a single cable choice, the ability to loosen the grip and slide the dog in the track and then retighten (a feature which others cannot easily do), a return cable bore for cable that travels through the bore supporting a second dog operating in the same track, and accessory mounting holes for use with changeable shoes and sleds. Embodiments as described herein may carry out one or more of these features.
An embodiment is shown in
In an embodiment, this can be sized to hold a standard 2 inch knife.
The dog also includes first and second cable locations, including a first cable conduit location 220 shown with the cable 221 therein. The cable 221 is held by cable grippers at the locations 230 and 231 as described herein. Set screws 240, 241, 242, 243, 244 are used to hold the cable in place. The cable is run through the cable conduit 220 at an off-center location. The receiver 210 is at the center of the device. Another off-center location, which is symmetric to the off-center location of cable conduit 220, forms a second cable conduit 225. A cable can pass through the second conduit area 225 without being held by the dog, and therefore can pass freely through it. For example, in one embodiment, there can be two dogs in the same track, with the cable for the further-placed dog passing through the second conduit area 225 of the closer-placed dog.
Set screws 240, 241 and 242 are also shown in countersink holes, and as explained herein are in a location so that they can be tightened through the opening in the stage without opening the stage itself. More generally, however, the set screws can be any device which increases and decreases the tightness of the grippers against the cable.
In a similar way, the other grips are intended for gripping different cables, with grip 505 shown in
Although only a few embodiments have been disclosed in detail above, other embodiments are possible and the inventors intend these to be encompassed within this specification. The specification describes specific examples to accomplish a more general goal that may be accomplished in another way. This disclosure is intended to be exemplary, and the claims are intended to cover any modification or alternative which might be predictable to a person having ordinary skill in the art. For example other configurations for other applications are possible.
Also, the inventor intends that only those claims which use the words “means for” are intended to be interpreted under 35 USC 112, sixth paragraph. Moreover, no limitations from the specification are intended to be read into any claims, unless those limitations are expressly included in the claims.
Where a specific numerical value is mentioned herein, it should be considered that the value may be increased or decreased by 20%, while still staying within the teachings of the present application, unless some different range is specifically mentioned.
The previous description of the disclosed exemplary embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these exemplary embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
This application claims priority from provisional application No. 61/261,264, filed Nov. 13, 2009, the entire contents of which are herewith incorporated by reference.
Number | Date | Country | |
---|---|---|---|
61261264 | Nov 2009 | US |