Ladder rung cap for use with open ended ladder rungs for noise reduction and safety

Abstract

A ladder rung accessory assembly includes first and second caps have a respective base that is shaped to cover respective rung openings of a selected rung of an extension ladder to reduce acoustic noise during transport. Each cap includes a guide member that is received in the respective opening to position the attached base. Channels formed through the bases and guide members are shaped to receive a cable tie passing through each cap and the selected rung. The first cap is held against the ladder by a head of the cable tie and the second cap is held against the ladder by an internal pawl locking mechanism of the second cap that ratchets against a toothed tape section of the cable tie.

Claims

1. A ladder rung accessory assembly comprising: a cable tie comprising: a head; and a tape section attached to the head and having teeth; a first cap comprising: a first base shaped to cover a first rung opening of a selected rung attached on a first lateral side rail of an extension ladder and having an outer side that comprises a recess shaped to receive the head of the cable tie; a first guide member attached to an inner side of the first base and shaped to be received in the first rung opening to position the first base to cover the first rung opening; and a first channel formed from a distal end of the first guide member to the recess of the outer side of the first base and shaped to receive a tang end of the cable tie and shaped smaller than the head of the cable tie; the recess being in communication with the first channel; and a second cap comprising: a second base shaped to cover a second rung opening of the selected rung attached on a second lateral side rail of the extension ladder; a second guide member attached to an inner side of the second base and shaped to be received in the second rung opening to position the second base to cover the second rung opening; and a second channel formed from a distal end of the second guide member to an outer side of the second base and shaped to receive the tang end of the cable tie and comprising a pawl locking mechanisms that ratchets against the tape section of the cable tie.

2. The ladder rung accessory assembly of claim 1, wherein the first and second bases comprise a planar substrate shaped to cover a rolled-edge attachment of a D-rung shaped rung.

3. The ladder rung accessory assembly of claim 1, wherein the first and second bases comprise a planar substrate shaped to cover a rolled-edge attachment of a rectangular shaped rung.

4. The ladder rung accessory assembly of claim 1, wherein the outer surface of the first base comprises a recess shaped to receive the head of the cable tie, the recess communicating with the first channel.

5. A ladder comprising: a first lateral side rail; a second lateral side rail; and more than one rung each rung attached at respective first and second openings between the first and second lateral side rails; and a ladder rung accessory assembly comprising: a cable tie comprising: a head; and a tape section attached to the head and having teeth; a first cap comprising: a first base shaped to cover a first rung opening of a selected rung attached on a first lateral side rail of an extension ladder and having an outer side that comprises a recess shaped to receive the head of the cable tie; a first guide member attached to an inner side of the first base and shaped to be received in the first rung opening to position the first base to cover the first rung opening; and a first channel formed from a distal end of the first guide member to the recess of the outer side of the first base and shaped to receive a tang end of the cable tie and shaped smaller than the head of the cable tie; the recess being in communication with the first channel; and a second cap comprising: a second base shaped to cover a second rung opening of the selected rung attached on a second lateral side rail of the extension ladder; a second guide member attached to an inner side of the second base and shaped to be received in the second rung opening to position the second base to cover the second rung opening; and a second channel formed from a distal end of the second guide member to an outer side of the second base and shaped to receive the tang end of the cable tie and comprising a pawl locking mechanisms that ratchets against the tape section of the cable tie.

6. The ladder of claim 5, wherein the first and second bases comprise a planar substrate shaped to cover a rolled-edge attachment of a D-rung shaped rung.

7. The ladder of claim 5, wherein the first and second bases comprise a planar substrate shaped to cover a rolled-edge attachment of a rectangular shaped rung.

8. The ladder of claim 5, wherein the outer surface of the first base comprises a recess shaped to receive the head of the cable tie, the recess communicating with the first channel.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The description of the illustrative embodiments can be read in conjunction with the accompanying figures. It will be appreciated that for simplicity and clarity of illustration, elements illustrated in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements are exaggerated relative to other elements. Embodiments incorporating teachings of the present disclosure are shown and described with respect to the figures presented herein, in which:

(2) FIG. 1 is an isometric side view illustrating a ladder rung accessory assembly being mounted to an extension ladder to reduce acoustic noise during exposed transport, according to one or more embodiments;

(3) FIG. 2 is an isometric view of an inner side of the first cap “A” of the ladder rung accessory assembly, according to one or more embodiments;

(4) FIG. 3 is an isometric view of an outer side of the first cap “A” of the ladder rung accessory assembly, according to one or more embodiments;

(5) FIG. 4 is an isometric view of an inner side of the first cap “B” of the ladder rung accessory assembly, according to one or more embodiments;

(6) FIG. 5 is an isometric view of an outer side of the first cap “B” of the ladder rung accessory assembly, according to one or more embodiments;

(7) FIG. 6 is an isometric cutaway view of an outer side of the first cap “B” depicting a pawl locking mechanism that is positioned within the second channel, according to one or more embodiments;

(8) FIG. 7 depicts a simplified diagrammatic cross section view of a selected rung of an extension ladder with first and second caps positioned proximate to respective openings in side rails, according to one or more embodiments;

(9) FIG. 8 depicts a simplified diagrammatic cross section view of the selected rung with the first cap “A” inserted into an opening and a cable tie inserted through the first cap “A” and the selected rung, according to one or more embodiments; and

(10) FIG. 9 depicts a simplified diagrammatic cross section view of the selected rung with the ladder rung accessory assembly installed, according to one or more embodiments.

DETAILED DESCRIPTION

(11) The present innovation relates to an attachable self-supporting cap for the open ends of ladder rungs or the like for noise reduction and safety. The self-supporting cap is designed to attach thru an open ladder rung, whereas, cap “one” has a square inset with a slotted opening to accept a cable tie tang, the tang extends through the ladder rung and attaches to cap “two” with an integral cable tie locking mechanism on the opposite end of the rung.

(12) In the following detailed description of exemplary embodiments of the disclosure, specific exemplary embodiments in which the disclosure may be practiced are described in sufficient detail to enable those skilled in the art to practice the disclosed embodiments. For example, specific details such as specific method orders, structures, elements, and connections have been presented herein. However, it is to be understood that the specific details presented need not be utilized to practice embodiments of the present disclosure. It is also to be understood that other embodiments may be utilized and that logical, architectural, programmatic, mechanical, electrical and other changes may be made without departing from general scope of the disclosure. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present disclosure is defined by the appended claims and equivalents thereof.

(13) References within the specification to “one embodiment,” “an embodiment,” “embodiments”, or “one or more embodiments” are intended to indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. The appearance of such phrases in various places within the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Further, various features are described which may be exhibited by some embodiments and not by others. Similarly, various requirements are described which may be requirements for some embodiments but not other embodiments.

(14) Reference will now be made in detail to several embodiments of the present innovation that are illustrated in the accompanying drawings. Wherever possible, same or similar reference numerals are used in the drawings and the description to refer to the same parts or steps. The drawings are in simplified form and are not to precise scale. For purposes of convenience and clarity only, directional terms, such as, top, bottom, right side, left side and perspective may be used with respect to the drawings. These and similar direction terms should not be construed to limit the scope of the invention in any manner.

(15) FIG. 1 depicts a ladder rung accessory assembly 100 being installed through left and right openings 102 of where each rung 104 is attached at D-shaped rolled edge 106 to side rails 108 of an extension ladder 110. The ladder rung accessory assembly 100 includes a first cap “A” 112 and a second cap “B” 114 that are held against opposing openings 102 of a selected rung 104 by a cable tie 116.

(16) A generally-known cable tie 116, normally made of nylon, has a flexible tape section 118 with teeth 120 that engage with a pawl (not shown) in a block end or head 122 to form a ratchet. As the free end of the tape section 118 is pulled through the head 122, the cable tie 116 tightens and does not come undone. In the present disclosure, the pawl of the cable tie 116 is not used and can be omitted. In one or more embodiments, a flexible tape section can be attached to a first cap (not shown).

(17) In one or more embodiments, the first and second caps are removable and are removably coupled by the cable tie 116 or similar ratcheting tie. The terms “removable”, “removably coupled”, “removably installed,” “readily removable”, “readily detachable”, “detachably coupled”, “separable,” “separably coupled,” and similar terms, as used in this specification and appended claims, refer to structures that can be uncoupled, detached, uninstalled, or removed from an adjoining structure with relative ease (i.e., non-destructively, and without a complicated or time-consuming process), and that can also be readily reinstalled, reattached, or coupled to the previously adjoining structure.

(18) In one or more embodiments, the first and second caps and cable tie portions may be constructed of polymers such as nylon, polypropylene, polyester, urethane, or the like. In one or more embodiments, the first and second caps and cable tie portions may comprise a polyolefin. Typical polyolefins can include polyethylene, polypropylene, and high molecular weight polyethylene. In some embodiments, rung plugs consist essentially of a polyolefin such as polyethylene or polypropylene.

(19) The first cap “A” 112 includes a first base 124 that is a planar substrate shaped to cover a first rung opening 102 of a selected rung 104. The first cap “A” 112 includes a first guide member 126 attached to an inner side of the first base 124. The first guide member 126 is shaped to be received in the first rung opening 102 to position the first base 124 to cover the first rung opening 102. The first cap “A” 112 includes a first channel 128 formed from a distal end of the first guide member 126 to an outer side of the first base 124. The first channel 128 is shaped to receive a tang end 130 of the cable tie 116. The first channel 128 is shaped smaller than the head 122 of the cable tie 116. The second cap “B” 114 includes a second base 134 that is a planar substrate shaped to cover a second rung opening 102 of the selected rung 104 attached on a second lateral side rail 108 of the extension ladder 110. The second cap “B” 114 includes a second guide member 136 attached to an inner side of the second base 134. The second guide member 136 is shaped to be received in the second rung opening 102 to position the second base 134 to cover the second rung opening 102. A second channel 138 is formed from a distal end of the second guide member 136 to an outer side of the second base 134. The second channel 138 is shaped to receive the tang end 130 of the cable tie 116. The second cap “B” 114 includes an internal pawl locking mechanism 140 (FIG. 6) that includes at least one primary pawl tooth that ratchets against the tape section 118 of the cable tie 116. In one or more embodiments, the internal pawl locking mechanism 140 may comprise at least one set of secondary pawl teeth.

(20) FIG. 2 is an isometric view of an inner side of the first cap “A” 112 of the ladder rung accessory assembly 100. The first cap “A” 112 includes the first guide member 126 attached to the inner side of the first base 124 and includes the first channel 128. FIG. 3 is an isometric view of an outer side of the first cap “A” 112 of the ladder rung accessory assembly 100. A recess 142 is shaped to receive the head of the cable tie 116 (FIG. 1). The recess 142 communicates with the first channel 128. FIG. 4 is an isometric view of an inner side of the first cap “B” 114 of the ladder rung accessory assembly 100. The second cap “B” 114 includes the second base 134 that is a planar substrate attached to the second guide member 136 that includes the second channel 138. FIG. 5 is an isometric view of an outer side of the first cap “B” 114 of the ladder rung accessory assembly 100 that includes the second channel 138. FIG. 6 is an isometric cutaway view of an outer side of the first cap “B” 114 depicting the pawl locking mechanism 140 that is positioned within the second channel 138 to engage a cable tie 116 (FIG. 1).

(21) FIG. 7 depicts a simplified diagrammatic cross section view of a selected rung 104 of an extension ladder 110. First and second caps 112, 114 are positioned proximate to respective openings 102 in side rails 108. FIG. 8 depicts a simplified diagrammatic cross section view of the selected rung 104 with the first cap “A” 112 inserted into an opening 102. A cable tie 116 is inserted through the first cap “A” 112 and the selected rung 104. The second cap 114 is aligned to receive the tang 130 of the cable tie 116. FIG. 9 depicts a simplified diagrammatic cross section view of the selected rung 104 with the second cap “B” 112 inserted into an opposing opening 102. The tang 130 and excess portion of the cable tie 116 is cut off after tightening the remaining portion of the cable tie 116 that is internal to the first and second caps 112, 114 and the selected rung 104.

(22) While the disclosure has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the disclosure. In addition, many modifications may be made to adapt a particular system, device or component thereof to the teachings of the disclosure without departing from the essential scope thereof. Therefore, it is intended that the disclosure not be limited to the particular embodiments disclosed for carrying out this disclosure, but that the disclosure will include all embodiments falling within the scope of the appended claims. Moreover, the use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.

(23) The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

(24) The description of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope of the disclosure. The described embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.