Rotary brush for carwash

Abstract

A rotary brush for a carwash comprised of a rotational hub, a plastic clip core, a plurality of longitudinal washing elements (“LWE”) and an equal plurality of plastic clips, for retaining the LWE to the plastic clip core. A plastic clip core is comprised of a plastic clip core, a plurality of longitudinal washing elements (“LWE”) and an equal plurality of plastic clips. The plastic clip core assembly is mated to a rotational hub, creating the rotary brush. The plastic clip core has a plurality of semi-cylindrical void cavities, each with an adjoining cylindrical void cavity. Each plastic clip has two parallel members, a first member and a second member. Each LWE has an upper edge, lower edge, free edge, and a cylindrical mount. A first member of a plastic clip fits into the cylindrical mount of the LWE and the semi-cylindrical void cavity. The second member of the plastic clip fits into the cylindrical void cavity, thus securing the LWE to the plastic clip core. The plastic clip core mates with the rotational hub in a no-slip condition.

Claims

1. A rotary brush using a plastic clip core assembly comprised of a rotational hub, a plastic clip core comprised of a compound cylindrical external surface, a compound cylindrical internal surface, a compound annular top surface, a compound annular bottom surface, wherein the compound cylindrical external surface has a plurality of semi-cylindrical void cavities extending from the compound annular bottom surface to the compound annular top surface; and wherein each semi-cylindrical void cavity has an adjoining cylindrical void cavity, a plurality of LWE, and a plurality of plastic clips, equal in number to the plurality of LWE, wherein the rotational hub mates with the plastic clip core by slipping inside the plastic clip core; wherein each plastic clip has a first cylindrical member connected with a second cylindrical member by a transverse member; and wherein each plastic clip retains one LWE in the plastic clip core.

2. The rotary brush using a plastic clip core assembly of claim 1, wherein the rotational hub has an outer cylindrical surface comprised of an alternating plurality of mating surfaces and indentations.

3. The rotary brush using a plastic clip core assembly of claim 2, wherein the compound cylindrical internal surface of the plastic clip core is comprised of an alternating plurality of semi-cylindrical inner surfaces and protrusions.

4. The rotary brush using a plastic clip core assembly of claim 3, wherein the plastic clip core mates with the rotational hub in a no-slip condition.

5. The rotary brush using a plastic clip core assembly of claim 4 wherein the semi-cylindrical inner surfaces of the internal surface of the plastic clip core align with the mating surfaces of the outer cylindrical surface of the rotational hub; and the protrusions of the cylindrical internal surface of the plastic clip core align with the indentations of the outer cylindrical surface of the rotational hub.

6. The rotary brush using a plastic clip core assembly of claim 5, wherein the rotational hub has a plurality of cylindrical receptacles.

7. The rotary brush using a plastic clip core assembly of claim 6, wherein the cylindrical receptacles are receivers for threaded fasteners.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention is illustrated with 10 drawings on 10 sheets.

(2) FIG. 1 is a perspective view of the present invention, a rotary brush for a carwash.

(3) FIG. 2 is a perspective view of a partially assembled plastic clip core assembly.

(4) FIG. 3 is an exploded perspective view of a partially assembled plastic clip core assembly showing the insertion of a plastic clip.

(5) FIG. 4 is an isolation view of a plastic clip.

(6) FIG. 5 is an isolation of the plastic clip core.

(7) FIG. 6 is an isolation of a LWE.

(8) FIG. 7 is an isolation of plastic clip core mated with the rotational hub.

(9) FIG. 8 is perspective view of a partially assembled plastic clip core assembly using an alternative embodiment of the plastic clip and plastic clip core.

(10) FIG. 9 is a perspective view of a partially assembled plastic clip core assembly using an alternative embodiment of the plastic clip and plastic clip core, wherein the plastic clip is partially inserted into the LWE.

(11) FIG. 10 is a perspective view of a partially assembled plastic clip core assembly using an alternative embodiment of the plastic clip and plastic clip core, wherein the plastic clip and LWE have been inserted into the plastic clip core.

DETAILED DESCRIPTION OF THE DRAWINGS

(12) The following descriptions are not meant to limit the invention, but rather to add to the summary of invention, and illustrate the present invention, a rotary brush for a carwash. The present invention is illustrated with a variety of drawings showing the primary embodiment of the present invention, with examples presented of the various form-factors that the present invention can take.

(13) Certain terminology is used in the following description for convenience only and is not limiting. The article “a” is intended to include one or more items, and where only one item is intended the term “one” or similar language is used. Additionally, to assist in the description of the present invention, words such as top, bottom, side, upper, lower, front, rear, inner, outer, right and left are used to describe the accompanying figures. The terminology includes the words above specifically mentioned, derivatives thereof, and words of similar import.

(14) Referring momentarily to FIGS. 1-3, the present invention 1 is a rotary brush for a carwash 1. The rotary brush for a carwash 1 is comprised of a plurality of LWE, a rotational hub 20, a plastic clip core 30, and an equal plurality of plastic clips 60. A plastic clip core 30 fully populated with LWEs 10 using plastic clips 60 is referred to as a plastic clip core assembly 10, 30, 60. A plastic clip core assembly 10, 30, 60 mated with a rotational hub 20 form the rotary brush for a carwash 1. The rotary brush 1 is comprised of a rotational hub 20 joined with a plastic clip core assembly 10, 30, 60.

(15) Referring to FIGS. 1-2, 5, and 7, the rotational hub 20 has a plurality of cylindrical receptacles 21 for receiving threaded fasteners, and an outer cylindrical surface 23, 24 comprised of an alternating plurality of mating surfaces 23 and indentations 24. The drive shaft of a standard rotary brush assembly would be bolted the rotary brush for a carwash 1 using the cylindrical receptacles 21 of the rotational hub 20.

(16) The plastic clip core 30 mates with the rotational hub 20. The plastic clip core 30 has a compound cylindrical internal surface 150, 151 comprised from plurality of semi-cylindrical inner surfaces 151 and protrusions 150. The rotational hub 20 has a plurality of mating surfaces 23 and indentations 24 on its outer cylindrical surface 23, 24. The plastic clip core 30 fits over the rotational hub 20. The plurality of semi-cylindrical inner surfaces 151 of the plastic clip core 30 align and mate with the plurality of mating surfaces 23 on the rotational hub 20. The plurality of protrusions 150 of the plastic clip core 30 mate with the plurality of indentations 24 of rotational hub 20. With the plastic clip core 30 properly mated to the rotational hub 20, a rotational no-slip condition will exist between the plastic clip core 30 and rotational hub 20.

(17) The plastic clip core 30 has a compound annular top surface 35. The plastic clip core 30 has a compound annular bottom surface, that is usually, although not necessarily, identical to the compound annular top surface 35. The exterior surface of the plastic clip core 30 is created from a plurality of concave surfaces 33 alternating with a plurality of semi-cylindrical void cavities 34. Each semi-cylindrical void cavity 34 terminates in a left filleted surface 132 and a right filleted surface 134 in the adjoining concave surfaces 33. The interior of a semi-cylindrical void cavity 34 is made up of a semi-cylindrical surface 131 which extends to the compound annular top surface 135. A portion of the semi-cylindrical surface 131 is interrupted by a three-dimensional saddle surface 141 that connects to a cylindrical void cavity 140. In other words, each semi-cylindrical void cavity 34 of the plastic clip core assembly 30 is separated from an adjoining cylindrical void cavity 140 by a three-dimensional saddle surface 141. The compound annular top surface 35 has rounded terminations 36, 37 created by the right filleted surfaces 134 and the left filleted surfaces 132, respectively.

(18) FIG. 4 shows a first embodiment of the plastic clip 60. The plastic clip 60 has two parallel cylindrical members 61, 62 joined by a transverse member 65. Each cylindrical member 61, 62 has a rounded bottom 63, 64. The plastic clip has a filleted edge 67 connecting the cylindrical members 61, 62 and transverse member 65 to a flat top 66. The first cylindrical member 61 and the second cylindrical member 62 are equal in height.

(19) The first and second cylindrical members 61, 62 of the plastic clip 60 fit into a semi-cylindrical void cavity 34 and a cylindrical void cavity 140 in the plastic clip core 30, respectively. The transverse member 65 rests on the three-dimensional saddle surface 141.

(20) FIG. 1 shows that two oppositionally disposed planar members 11, 111 form the LWE 10. Referring to both FIGS. 1 and 6, the two oppositionally disposed planar members 11, 111 are bonded together, leaving a bond seam 12. Each planar member 11, 111 has an upper edge 14, a lower edge 15, a free edge 13, and a cylindrical mount 16. The cylindrical mount 16 has an inner cylindrical surface 19 and a cut-out 119.

(21) FIG. 6 shows the construction of a LWE in isolation. FIG. 3 is an exploded view showing the insertion of one of the plastic clips 60, and one of the LWE 10, into the plastic clip core assembly 30. The cylindrical mount 16 has an external semi-cylindrical surface 18 that meets the planar member 11 at a seam 17. The first cylindrical member 61 fits in the inner cylindrical surface 19 of the cylindrical mount 16 of the LWE 10. The transverse member 65 fits in the cut-out 119 of the cylindrical mount 16. The cylindrical mount 16, with the first cylindrical member 61 of the plastic clip 60 inserted, fits in the semi-cylindrical void cavity 34. The second cylindrical member 62 of the plastic clip 60 fits into the adjoining cylindrical void cavity 140. The transverse member 65 rests on the saddle surface 141. In similar fashion, the remainder of the plurality of LWE 10 are attached to the plastic clip core assembly 30 with an equal plurality of plastic clips 60. FIG. 1 shows a plastic clip core assembly 30 that is fully populated with a plurality of LWE 10 using plastic clips 60. This is referred to as the plastic clip core assembly 10, 30, 60. A plastic clip core assembly 10, 30, 60 that is fully populated with a plurality of LWE 10 using plastic clips 60, is mated with the rotational hub 20. This constitutes a rotary brush 1 using a plastic clip core 30. The rotary brush 1 so constructed can be used with a rotary brush assembly comprised of a rotary brush mount, a drive mechanism, a suspension, and a rotary brush assembly mount, inter alia. The rotary brush 1 is attached to the rotary brush assembly by attaching bolts or other suitable fasteners to the cylindrical receptacles 21 on the rotational hub 20.

(22) FIGS. 8-10 are a progression showing the insertion of an alternative embodiment of the plastic clips 160, and one of the LWE 10, into the plastic clip core 30. This plastic clip 160 has two parallel cylindrical members 162, 163 of different height and width, joined by a transverse member 164. When comparing the first member 162 to the second member 163, the first member 162 has a greater height but a smaller diameter. In other words, the first member 162 is taller than the second member 163; and the first member 162 has a smaller diameter than the second member 163. The first member 162 has a flange 161 on its bottom. The smaller diameter of the first member 162 allows the cylindrical mount 16 of the LWE 10 to move about the first member 162 more easily than it would with a thicker diameter. The flange 161 acts as a stop on the cylindrical mount 16 of the LWE 10. The flange 161 also snaps into the semi-cylindrical void cavity 34, to assure that the plastic clip 160 and LWE 10 remain in place during use. This prevents the plastic clip 160 and LWE 10 from being dislodge when struck or tugged. The second member 163 has a rounded bottom 165. The first 162 and second 163 members are connected to a transverse member 164 with a flat top 164. The transverse member 164 is orthogonal to the two cylindrical members 162, 163.

(23) The plastic clip core 30 for the alternative embodiment of the plastic clip 160 remains unaltered. The plastic clip core 30 still has a plurality of concave surfaces 33 alternating with a plurality of semi-cylindrical void cavities 34, a plurality of cylindrical void cavities 140 adjoining the semi-cylindrical void cavities 34, a plurality of three-dimensional saddle surfaces 141 separating the cylindrical void cavities 140 from the semi-cylindrical void cavities 34, and a compound annular top surface 35.

(24) Likewise, the LWE 10 is unaltered. FIG. 8 shows the LWE 10 and its planar member 11, a bond seam 12, an upper edge 14, a lower edge 15, and a free edge 13.

(25) The first and second cylindrical members 162, 163 of the plastic clip 160 fit into a semi-cylindrical void cavity 34 and a cylindrical void cavity 140 in the plastic clip core 30, respectively. The transverse member 164 rests on the three-dimensional saddle surface 141.

(26) The LWE 10 is fabricated from a flexible and durable hygroscopic material, such as felt, foamed polymers, polyethylene, foamed EVA, or fabric. The LWE 10 is made by folding a length of material in half and binding them together. The LWE can be bound together using adhesive or stitching. Near the mid-point, a seam 18 defines the cylindrical mount 16. The cylindrical mount 16 has a small cut-out 119 that facilitates the placement of the plastic clip 60 by accommodating the transverse member 65.

(27) The plastic clip core 30 is fabricated from a durable metal suitable to the application, such as steel, aluminum or a metal alloy. The plastic clip core 30 is most easily fabricated using a computer, numerically controlled machine (“CNC”). The left filleted surface 132 and the right filleted surface 134 serve a critical purpose in preventing the fatigue of the LWE 10 at its interface with the plastic clip core 30.