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[0001] 1. Field of the Invention
[0002] This invention relates generally to tools for use in the building construction industry and, more specifically, to a Step Attachment.
[0003] 2. Description of Related Art
[0004] There are a variety of temporary steps, scaffolds and other structures that have evolved over time in the construction industry. Of particular note is Harsh, U.S. Pat. No. 3,561,563 for a “Portable Post Step.” The Harsh device is intended to provide a worker with the ability to turn a sign post into a ladder (so that the worker can work on the sign structure). While the Harsh device may have been suitable for its intended purpose, it is not suitable for use as a step for the construction industry: (1) because the thin sheet metal design provides insufficient rigidity to accommodate the weight of a worker and his or her tools; (2) the flat surface provided by the Harsh step is too easily soiled, after which it may provide a slip hazard to the worker's footing; and (3) the overall profile and dimensions of the Harsh device are too large to conveniently fit into a worker's tool belt and/or tool box.
[0005] Another prior device is the Koffski “Portable Step;” U.S. Pat. No. 4,754,841. The Koffski device seeks to accomplish a similar task as Harsh, but with a different structure. While the Koffski step is likely to be more rigid and durable than the Harsh device, it too has its problems. First, the Koffski device is formed with a totally enclosed “U shaped body” for encompassing a post—because the post is totally encompassed when the step is attached, it mandates that step be either slipped over the top of the post, or under the bottom; as such, it cannot be used on an existing “stud wall.” Furthermore, the Koffski device is anything but sleek and condensed; as with Harsh, this device is unwieldy for storing and use with conventional tools, belts and totes. Also, Koffski has a relatively flat tread for standing upon—like Harsh, this may be susceptible to becoming slippery.
[0006] Yet another temporary step design is provided by Field, U.S. Pat. No. 4,696,372. The Field “Portable Step and Carrying Device for Stud Walls” solves some of the problems of the Harsh and Koffski devices, but still leaves room for improvement. The Field device includes a spring-loaded member having a “stud-engaging end” for pinching a wood stud to prevent the step from sliding down a stud on which it is installed. Although the Field device departs from the wide, flat tread surface, it still fails to provide a truly fail-safe design to prevent it from becoming slippery when soiled. Furthermore, the Field device seeks to reduce its size by addition of the spring-loaded stud-engaging end; a byproduct of this choice is moving parts that will surely reduce the overall reliability of the device. In fact, it would seem to be a generally unsafe design choice to rely on a single spring to hold the device in place on the wooden stud.
[0007] What is needed, therefore, is a step attachment for temporary use in wood-framed structures that has improved slip resistance for footing, a small overall package size, as well as the strength and durability necessary to last in the grueling use patterns of the construction industry.
[0008] In light of the aforementioned problems associated with the prior devices, it is an object of the present invention to provide a Step Attachment that is strong enough to be used in the construction profession. The attachment should have as small outside dimensions as possible, such that the device can be easily carried in conventional tool boxes and on tool belts. The attachment should further provide additional slip-resistance for secure footing under a variety of conditions and use patterns. It is a further object that the device be manufacturable from standard stock components and be assembled extremely easily.
[0009] The objects and features of the present invention, which are believed to be novel, are set forth with particularity in the appended claims. The present invention, both as to its organization and manner of operation, together with further objects and advantages, may best be understood by reference to the following description, taken in connection with the accompanying drawings, of which:
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[0016] The following description is provided to enable any person skilled in the art to make and use the invention and sets forth the best modes contemplated by the inventor of carrying out his invention. Various modifications, however, will remain readily apparent to those skilled in the art, since the generic principles of the present invention have been defined herein specifically to provide a Step Attachment.
[0017] The present invention can best be understood by initial consideration of
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[0019] The first and second legs
[0020] It should also be readily apparent that the first leg
[0021] The Rung member
[0022] As will be discussed more fully below, it is pointed out that the rung member
[0023] This embodiment
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[0028] The configuration of the legs
[0029] As discussed above, it should be even clearer here that the top surface
[0030] Those skilled in the art will appreciate that various adaptations and modifications of the just-described preferred embodiment can be configured without departing from the scope and spirit of the invention. Therefore, it is to be understood that, within the scope of the appended claims, the invention may be practiced other than as specifically described herein.