Assembly for clamping and grounding objects

Abstract

An apparatus for clamping and grounding an upper and lower solar panel mounting rail. The apparatus comprises a fastener with an enlarged end, and a shank, with the enlarged end having one or more sharp protrusions that resemble teeth, and a washer with one or more sharp protrusions, and an opening. When installed, the shank is inserted through the opening of the washer, the sharp protrusions of the enlarged end penetrate either the lower or upper mounting rail and the sharp protrusions of the washer penetrate the other mounting rail while at the same time creating a grounding path through the apparatus.

Claims

1. An assembly for affixing a first object to a second object and a third object and providing a grounding path between the objects comprising: a. first and second frames each comprising an elongated channel for receiving a solar panel; b. a rail guide; c. an electrically conductive fastener; i. the fastener comprising a shank homogeneous with an enlarged end such that the shank terminates at a nut end and the enlarged end further comprises a top and a bottom surface wherein the top surface comprises at least one raised portion for penetrating a surface of the rail guide; d. an electrically conductive washer comprising: i. a central opening for allowing the shank to pass through the washer, ii. a pair of tabs with each respective tab being on a respective edge of the washer such that the pair of tabs extend downward in the direction of the enlarged end, and iii. at least one raised portion on each respective edge of the washer for penetrating a surface of the first and second frames respectively.

2. The assembly of claim 1, wherein the respective edges are flanges.

3. The assembly of claim 1 wherein the opening of the washer further comprises an internal thread.

4. The assembly of claim 1, wherein the shank further comprises an external thread for engaging the opening of the washer.

5. The assembly of claim 1, wherein the fastener and washer are metallic.

6. The assembly of claim 1, wherein the assembly further comprises a nut for securing the washer to the first and second frames respectively.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) A more complete understanding of the present invention may be derived by referring to the detailed description and claims when considered in connection with the following illustrative figures. In the following figures, like reference numbers refer to similar elements and steps throughout the figures.

(2) FIG. 1 shows the profile view of an embodiment of the apparatus.

(3) FIGS. 2A & 2B illustrates the upper and lower sides of the washer in FIG. 1.

(4) FIG. 3 illustrates an alternate embodiment of the assembly.

(5) FIGS. 4A & 4B illustrates an alternate embodiment of the washer.

(6) FIG. 5 shows a cross-section view when the embodiment in FIG. 3 is utilized for its intended purpose.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

(7) In the following description, and for the purposes of explanation, numerous specific details are provided to thoroughly understand the various aspects of the invention. It will be understood, however, by those skilled in the relevant arts, that the present invention may be practiced without these specific details. In other instances, known structures and devices are shown or discussed more generally in order to avoid obscuring the invention. In many cases, a description of the operation is sufficient to enable one to implement the various forms of the invention, particularly when the operation is to be implemented in software. It should be noted that there are many different and alternative configurations, devices and technologies to which the disclosed embodiments may be applied. The full scope of the inventions is not limited to the examples that are described below.

(8) FIG. 1 illustrates an embodiment of the assembly for securing solar panel mounting rails a fastener 100, which comprises a shank 110 and an enlarged end 120 (also referred to as a head), on which there are multiple raised portions 130, which are typically sharp ridges The embodiment also contains a washer 200 and a nut 300. The washer 200 has two elongated side portions 240 which extend downward. The elongated side portions 240 are also referred to as tabs and are located on the edge of the washer 200. FIGS. 2A and 2B illustrate an alternate embodiment of the washer 200 in FIG. 1 that provides the same function. The washer 201 has an opening 230 (as shown in FIG. 2 and is also present in FIG. 1), through which the shank 110 is inserted. The upper side and lower side or surface of the washer 201 are shown in FIG. 2. The lower side of washer 201 also includes multiple raised portions 210, which resemble sharp teeth-like structures capable of penetrating metallic structures such as the solar panel mounting rails. Opposite edges of the washer 201 also include tabs 239 that extend downward as shown in FIG. 2A.

(9) FIG. 3 illustrates another embodiment of this invention. In this embodiment, the shank 111 is externally threaded, the washer 201 further comprises two flanges 220 that are bent downward, and the raised portions 211 are located on the edges of flanges 220. This embodiment also has elongated side portions 241 on the flanges 220. The elongated side portions 241 are also referred to as tabs.

(10) An alternate embodiment of a washer with flanges is illustrated in FIGS. 4A & 4B showing the embodiment in top and bottom views. In this embodiment, the washer 202 has arch-shaped flanges 221. The raised portions 211 and the elongated side portions 242 are also located on the edges of the flanges 221. Otherwise the various elements work in accordance as described above.

(11) FIG. 5 shows a cross section when the exemplary assembly in FIG. 3 is used to clamp two parallel solar panel mounting rails 400 and 600, which is typically a frame that is an elongated channel for receiving a solar panel (also referenced as a solar panel mounting rail or a frame) and a rail (also referenced as a rail guide) 500 that runs under and perpendicular to the mounting rails 400 and 600. The threaded shank 111 is disposed through the openings of the washer 201 and the nut 300. The enlarged end 121 of the fastener 101 is in contact with the rail 500, with the sharp ridges 131 penetrating into the rail 500. The washer 201 contacts the rails 400 & 600 at the flanges 221, so that the raised portions 211 can penetrate into the two rails 400 and 600. An elongated side portion or tab 241 of the washer 201 is located on the flange 221 and is placed between rails 400 and 600 to separate them when they are adjacent to each other. If the mounting rails 400 and 600, the fastener 101, and the washer 201 are of suitable materials, the assembly forms an electrical grounding path between the rails 400 and 600 through the washer 201, between the mounting rail 400 and the rail guide 500 through the washer 201 and the fastener 101, and between the mounting rail 600 and rail guide 500 through the washer 201 and the fastener 101. It is also understood that the alternate embodiments of the fastener 100 with either washer 200 or 201, or the washer 101 with either washer 201 or 202 can be utilized to secure the mounting rails 400 and 600 to the rail guide 500, provide space between adjacent mounting rails, and provide as electrical path between the rails 400 and 600 and the rail guide 500.