Patent Description:
Sweepers can be used to remove debris and particulate matter from various surfaces. In particular, a gutter broom can be used to clean roads, streets, and other surfaces and can be mounted onto a surface cleaning vehicle to move across the surface. The gutter broom can also approach a curb or a side of a building to remove debris. The gutter broom can include a brush mount that receives brush bristles for sweeping.

<CIT> discloses a circular brush with bristles, bent over at the centre, of each bristle tuft are gripped, in the bent-over region, in an elongate sleeve, said sleeves being pushed into retaining profiles. The retaining profiles each exhibit, corresponding to the outer shape of the sleeves, a hollow cross-section which is rounded out widely to the side in the bent-over region and is constricted to form a narrow neck part in the region of the outlet cross-section. In the region of the neck part of the retaining profiles, the sleeve ends run approximately parallel to one another and extend beyond the neck part in the region of the free bristle ends.

<CIT> discloses a rotary brush for a road sweeper in which the rotary brush need not be removed with a rotation shaft from the road sweeper even when brush members are abraded. The brush members are fixed by a screw through a presser plate at eight positions in the circumferential direction of a cylindrical shaft member in such a way as to be deflected from each other along the length of the shaft member by specified length in a zigzag way to be fixed along the whole shaft member to form a main brush. Since the brush members are fastened by the screw, the brush member can be removed by removing the screw as the shaft member is installed on a bearing on the road sweeper.

<CIT> discloses a floor brush used in factories comprising a floor broom comprising (i) a mandrel including a channel that extends outwardly from an inner radial edge at a non-zero angle relative to a centerline of the mandrel, (ii) a retaining carrier positioned in the channel and coupled to the mandrel, the retaining carrier comprising a slot to receive the mandrel; and (iii) a bristle strip coupled to the carrier such that it is retained, the bristle strip extending down from the carrier.

The invention relates to a gutter broom as defined in the appended claims.

The accompanying drawings, which form part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the embodiments and to enable a person skilled in the relevant art(s) to make and use the embodiments.

The features and advantages of the aspects will become more apparent from the detail description set forth below when taken in conjunction with the drawings, in which like reference characters identify corresponding elements throughout. In the drawings like reference numbers generally indicate identical, functionally similar, and/or structurally similar elements.

The present invention will now be described in detail with reference to aspects thereof as illustrated in the accompanying drawings. References to "one aspect," "an aspect," "an exemplary aspect," etc., indicate that the aspect described may include a particular feature, structure, or characteristic, but every aspect may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same aspect. Further, when a particular feature, structure, or characteristic is described in connection with an aspect, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other aspects whether or not explicitly described.

The following examples are illustrative, but not limiting, of the present aspects. Other suitable modifications and adaptations of the variety of conditions and parameters normally encountered in the field, and which would be apparent to those skilled in the art, are within the scope of the disclosure.

Aspects of the present disclosure discuss a gutter broom. The gutter broom can rotate around its central axis (i.e., its axis of rotation) to clean a surface along its path. The gutter broom, as described herein, includes a mandrel (i.e., a driven plate), one or more carriers, and one or more bristle strips (i.e., strips, broom segments, broom attachments, brush, bristles, etc.). The mandrel can be positioned approximately parallel to a horizontal direction and can rotate about a vertical axis. The mandrel can be circular or arced and can support approximately <NUM> bristle strips and carriers that extend downward from the mandrel. Each carrier is removably coupled to the mandrel in a channel extending through a radial outer end of the mandrel. The channel extends outwardly from a radial inner edge. The channel extends at an angle relative to a centerline of the mandrel. Detent tabs along the outer end of the mandrel can secure the carriers in the radial direction. Tabs along each side of the carriers can secure the carriers to the mandrel in the lateral direction. Each bristle strip can similarly be removably coupled to the mandrel and secured in both the radial and the lateral directions. Aspects provide that bristle strips can be inserted into the carriers and can be secured in the lateral and/or radial direction by, for example, a press fit, snap fit, interference fit, adhesive, a lock, or another attachment method.

Roadway surfaces can be made of different materials (e.g., concrete, cobblestone, brick, etc.) and/or amass debris (e.g., growth, mud, non-natural debris, etc.), thus requiring cleaning applications that vary in contact pressure, time, or other parameters. In the gutter broom, bristle strips can extend down from the carriers to contact surfaces for cleaning. Aspects provide bristle strips that can be made of steel and/or another material (e.g., metals, plastics, composites, natural materials, etc.), and that can vary in dimensions, stiffness, geometry, or other properties for cleaning a variety of surfaces. For example, bristle strips can be composed of steel (e.g., steel wire). Steel can be sufficiently rigid to break down and/or move debris. Aspects provide that bristle strips can be composed of <NUM>% recyclable steel. Accordingly, the gutter broom having recyclable steel bristle strips can be environmentally conscious. Other aspects provide that bristle strips can be composed of other materials, or a blend of materials. For example, a bristle strip can have a steel and polypropylene mix. In some aspects, the mandrel can also be composed of <NUM>% recyclable steel. The carriers can be injection molded plastic in some aspects.

The gutter broom described herein is modular. For example, the arrangement of the mandrel, carriers, and bristle strips can be modified both at initial assembly and during the life and operation of the gutter broom. Operators can customize the gutter broom to target the specific needs of a surface, e.g., by varying the number of bristle strips having specific characteristics. For example, a gutter broom can include a first type of bristle strips that provide fine contact and a second type of bristle strips that provide more aggressive contact. This can help to target surfaces having tough debris, such as growth, while also limiting the overall abrasive contact of the gutter broom so that roadway surfaces are not damaged. Modularity can also streamline assembly of the gutter broom and later replacement of the bristles. Instead of delivering a gutter broom that is at least partially assembled, which can increase packaging and delivery costs, modular components can be delivered compactly in fewer and smaller bundles (e.g., flat-packed or densely packed into two boxes).

The modular components can be individually manufactured to support custom servicing. For example, if an operator requires a replacement carrier or bristle strip, they can source components instead of obtaining an entirely new gutter broom to acquire new parts. In some aspects, the gutter broom can cycle through many component replacements in its lifetime. Components can be individually sourced to replace damaged or worn components. Similarly, components can be exchanged between gutter brooms to support customization and servicing. In an aspect, modularity can also support the cleaning of each component to prevent contamination by, for example, mud or sand.

Bristle strips can be arranged on the gutter broom in the carriers at an angle. In this way, each adjacent bristle strip can be offset. The angled arrangement of the bristle strips on the gutter broom can support distributed contact with a surface such that each bristle strip wears evenly as compared to other bristle strips assembled at the same time and having the same properties. A mandrel having a larger interior can also support this aspect. Because of the distributed wear, the bristle strips assembled at the same time and having the same properties can be replaced together. According to aspects, each bristle strip can last for approximately <NUM> to approximately <NUM> hours without needing servicing or replacement of the bristle strips.

Servicing can also be simple such that no tools are required. For example, bristle strips can be positioned into carriers and easily removed in the same way, mechanically and without using tools. Accordingly, fewer and/or less skilled operators can assemble and service the gutter broom and replace worn bristle strips. Furthermore, assembly and replacement of bristle strips can occur in reduced time, e.g., minutes compared to hours. In some aspects, while the gutter broom is mounted onto a vehicle, a lock on each carrier can be opened, for example by pivoting the lock away from its locked position. This can allow radial movement of the bristle strips positioned in the carriers such that they can slide out of the carrier for replacement or servicing. Because the locks are simply pivoted away from their locked position to replace bristle strips, the gutter broom can remain mounted onto the vehicle during replacement. In this way, operators can easily complete replacement on the side of the road or a stopping area.

The gutter broom described herein can additionally be efficiently manufactured because each component can be discretely produced and distributed. Further, including bristle strips of varying properties (e.g., stiffness) can reduce the weight of the gutter broom, which can support manufacturing efficiency. Increased manufacturing efficiency can significantly reduce the cost of the gutter broom. Cost savings can additionally progress beyond manufacturing; e.g., the lower weight of the gutter broom can support extended motor life and limited operating costs. Accordingly, bristle strip selection can be a function of surface type to both effectively clean and prevent damage from continuous abrasive contact, along with operating device motor considerations.

A gutter broom <NUM> is shown in <FIG>. While gutter broom <NUM> is described herein, it is to be appreciated that its components can be used in other gutter brooms or gutter broom systems, e.g., for retrofit, customization by exchange of components, etc..

In some aspects, gutter broom <NUM> can be mounted onto a vehicle <NUM> (e.g., a truck, tractor, or a compact vehicle). Vehicle <NUM> can guide gutter broom <NUM> along a variety of surfaces. Gutter broom <NUM> can be positioned at a side of vehicle <NUM> to move along curbs or the sides of buildings for cleaning (e.g., sweeping, debris and/or particulate matter removal, etc.) where debris can collect. Vehicle <NUM> can also move gutter broom <NUM> along floors in, for example, manufacturing areas or retail environments. Vehicle <NUM> can support a driver <NUM> and a drive plate <NUM>. Driver <NUM> can rotate drive plate <NUM> and gutter broom <NUM> supported by drive plate <NUM> (e.g., via an electric or a hydraulic motor). Gutter broom <NUM> can rotate about its central axis <NUM> (i.e., its axis of rotation) to move and/or break down debris or other matter along its path (e.g., weeds, grass, mud, dirt, sand, trash, etc.). Central axis <NUM> can be generally perpendicular to the path along which gutter broom <NUM> moves (e.g., surfaces to be cleaned). In an aspect, central axis <NUM> can be generally vertical. Gutter broom <NUM> can be positioned to be generally horizontal as it rotates about the generally vertical central axis <NUM>.

As shown in <FIG>, gutter broom <NUM> includes a mandrel <NUM> (i.e., a driven plate) that supports one or more carriers <NUM> and one or more bristle strips <NUM> (i.e., strips, broom segments, broom attachments, brush, bristles, etc.). Each carrier <NUM> retains and supports a bristle strip <NUM>. In this way, carriers <NUM> can be sleeves or receptacles for bristle strips <NUM>.

Gutter broom <NUM> can have an upper end <NUM> and a lower end <NUM>. Upper end <NUM> of gutter broom <NUM> can include mandrel <NUM>, which can be fixedly attached to drive plate <NUM> (e.g., via bolts, adhesive, welding, etc.). In an aspect, mandrel <NUM> can be directly connected to broom driver <NUM> such that drive plate <NUM> is not needed. In some aspects, mandrel <NUM> can be removable such that it is modular. Lower end <NUM> of gutter broom <NUM> can include bristle strips <NUM> and can contact surfaces for cleaning. In an aspect, gutter broom <NUM> can be suspended from drive plate <NUM> such that only lower end <NUM> of gutter broom <NUM> can contact surfaces, debris, or other materials.

Bristle strips <NUM> can comprise material to withstand contact with various surfaces (e.g., concrete and unpaved roads) and debris (e.g., rocks, mud, growth, etc.). In an aspect, each bristle strip <NUM> can comprise flattened steel wire folded over a steel cable to form the bristles. In some aspects, each bristle strip <NUM> can include, for example, approximately fifteen to approximately thirty individual wires. The flattened steel wire and/or steel cable can further be encased in steel. In an aspect, the portion of each bristle strip <NUM> that contacts surfaces can be the steel encasement such that the flattened steel wire does not contact surfaces or debris. In an aspect, the <NUM>% steel composition of the bristle strips <NUM> can provide a stiffness that supports breaking down and movement of debris along the path of gutter broom <NUM> while being fully recyclable. Bristle strip <NUM> will be described in further detail below.

With reference to <FIG>, in some aspects, gutter broom <NUM> can support approximately <NUM> to approximately <NUM> carriers <NUM> and bristle strips <NUM>, such as approximately <NUM> to approximately <NUM> carriers <NUM> and bristle strips <NUM>, such as approximately <NUM> carriers <NUM> and bristle strips <NUM>. Each carrier <NUM> can be removably coupled to gutter broom <NUM>. Each bristle strip <NUM> can be removably coupled to one of the carriers <NUM> on gutter broom <NUM>. In this way, carriers <NUM> and bristle strips <NUM> can be modular. In another aspect, carriers <NUM> can be integrally formed with mandrel <NUM>. In a further aspect, carriers <NUM> can be integrally formed with bristle strips <NUM>.

As shown in <FIG>, mandrel <NUM> includes an interior <NUM>, an outer end <NUM>, one or more first outer edges <NUM>, one or more second outer edges <NUM>, one or more channels <NUM>, one or more channel ends <NUM>, an interior edge <NUM>, an inner edge <NUM> of outer end <NUM>, a tubular portion <NUM>, and one or more carrier detent tabs <NUM>.

In some aspects, mandrel <NUM> can be circular or arced. In an aspect, mandrel <NUM> can be of a standard size known in the industry. In some aspects, mandrel <NUM> can comprise one or more of metals, plastics, composites, ceramics, polymers, natural fibers, etc. For example, mandrel <NUM> can comprise steel. In an aspect, mandrel <NUM> can comprise <NUM>% recyclable steel.

In some aspects, interior <NUM> can be defined by interior edge <NUM>. Interior edge <NUM> can be a radially interior edge of mandrel <NUM> at a diameter D2 of mandrel <NUM>. Diameter D2 can be within a range of approximately <NUM> to approximately <NUM>. Outer end <NUM> can extend radially outwardly from interior edge <NUM>. Outer end <NUM> can include the one or more channels <NUM>. In some aspects, a channel <NUM> can be the opening between a first outer edge <NUM> and a second outer edge <NUM>. Accordingly, outer end <NUM> can include one or more first outer edges <NUM> and corresponding second outer edges <NUM>, with each first outer edge <NUM> and second outer edge <NUM> defining the channels <NUM>. In some aspects, first outer edges <NUM> and second outer edges <NUM> extend through outer end <NUM>. In some aspects, first outer edges <NUM> and second outer edges <NUM> extend radially outwardly from an inner edge <NUM> of outer end <NUM>. In an aspect, inner edge <NUM> can be a radial edge of mandrel <NUM> at a diameter D1 of mandrel <NUM>. Diameter D1 can be within a range of approximately <NUM> to approximately <NUM>.

Interior edge <NUM> and inner edge <NUM> can define a tubular portion <NUM> of mandrel <NUM>. In some aspects, channels <NUM> are formed by attaching (e.g., by welding) pieces having first outer edges <NUM> and second outer edges <NUM> onto tubular portion <NUM> of mandrel <NUM>. Accordingly, in some aspects, mandrel <NUM> is not a unitary piece. In some aspects, a carrier detent tab <NUM> can extend into a channel <NUM> by extending from one or both of first outer edge <NUM> and second outer edge <NUM> into channel <NUM>. In some aspects, each channel <NUM> can extend from a channel end <NUM>. Each channel end <NUM> can meet each first outer edge <NUM> at inner edge <NUM> of outer end <NUM>.

In some aspects, channel <NUM> can extend outwardly from inner edge <NUM> along a channel axis <NUM>. In an aspect, channel axis <NUM> can be at a channel angle, θ, from a centerline <NUM> of mandrel <NUM>. In some aspects, the channel angle, θ, can range from approximately <NUM> degrees to approximately <NUM> degrees, such as approximately <NUM> degrees to approximately <NUM> degrees, such as approximately <NUM> degrees. In some aspects, the angled arrangement of channels <NUM> can reduce contact between adjacent bristle strips <NUM> while rotating such that bristle strips <NUM> can be positioned to operate effectively.

In some aspects, interior <NUM>, defined by interior edge <NUM>, can be sized to prevent bristle strips <NUM> from bending inwardly while rotating in gutter broom <NUM> around central axis <NUM>. In some aspects, interior <NUM> defined by interior edge <NUM> can be sized to prevent each of bristle strips <NUM> from contacting any adjacent bristle strips <NUM> while rotating. For example, a larger interior <NUM> can allow for bristle strips <NUM> to be spaced farther apart such that contact between adjacent bristle strips <NUM> is reduced while rotating such that bristle strips <NUM> can be positioned to operate effectively.

In some aspects, the distance between interior edge <NUM> and inner edge <NUM> of outer end <NUM> can be a distance D3, which is the difference between D1 and D2. This distance can define tubular portion <NUM> of outer end <NUM>. In some aspects, positioning bristle strips <NUM> farther outwardly from interior <NUM> can distance adjacent bristle strips <NUM>. Accordingly, in some aspects, tubular portion <NUM> between interior edge <NUM> and inner edge <NUM> of outer end <NUM> can reduce contact between adjacent bristle strips <NUM> while rotating such that bristle strips <NUM> can be positioned to operate effectively. In some aspects, tubular portion <NUM> can support outer end <NUM> and limit its lateral displacement (e.g., as a result of applied weight when mandrel <NUM> is at least partially filled with carriers <NUM> and bristle strips <NUM>).

With reference to <FIG>, in some aspects, each carrier <NUM> includes a first end <NUM>, a second end <NUM>, left rails <NUM>, right rails <NUM>, a left slot <NUM>, and a right slot <NUM>. In some aspects, carrier <NUM> can include an upper end <NUM>, a lower end <NUM>, an upper cavity <NUM>, a lower cavity <NUM>, a locking member <NUM> and a lock extension <NUM>. Carriers <NUM> can be injection molded plastic, in some aspects.

Carriers <NUM> are positioned in channels <NUM> in mandrel <NUM> and removably coupled to mandrel <NUM> along first outer edges <NUM> and second outer edges <NUM>. Each carrier <NUM> can be positioned at a channel angle θ from centerline <NUM>. In an aspect, each carrier <NUM> can be positioned at the same channel angle θ. In another aspect, carriers <NUM> can be positioned at different channel angles θ. In an aspect, each carrier <NUM> can be arranged in a channel <NUM> such that lower cavity <NUM> of carrier <NUM> can be oriented perpendicular to channel <NUM> such that bristle strips <NUM> extend downward from mandrel <NUM> in a generally vertical direction. In another aspect, each carrier <NUM> can be arranged in a channel <NUM> such that lower cavity <NUM> and or upper cavity <NUM> of carrier <NUM> can be oriented obliquely with respect to channel <NUM> such that bristle strips <NUM> extend downward from mandrel <NUM> at an angle. For example, lower cavity <NUM> and or upper cavity <NUM> of carrier <NUM> can extend from mandrel <NUM> in a lateral direction generally parallel to an axis <NUM> (<FIG>). In some aspects, axis <NUM> can be at an angle, α, from axis <NUM>. Accordingly, carriers <NUM> can extend from mandrel <NUM> at an angle, α, from axis <NUM>. In some aspects, the angle, α, can range from approximately <NUM> degrees to approximately <NUM> degrees, such as approximately <NUM> degrees to approximately <NUM> degrees, such as approximately <NUM> degrees. Accordingly, each carrier <NUM> can be arranged at an offset with respect to an adjacent carrier <NUM>.

With reference to <FIG>, in some aspects, a carrier <NUM> is positioned in a channel <NUM>. Carrier detent tabs <NUM> can engage and retain carrier <NUM> in channel <NUM> in a radial direction generally parallel to an axis <NUM>. The engagement of carrier detent tabs <NUM> and carrier <NUM> can create a snap fit or an interference fit to retain carrier <NUM> in channel <NUM>. In some aspects, carrier detent tabs <NUM> on mandrel <NUM> can elastically deform a portion of carrier <NUM> in channel <NUM> during installation, e.g., by pushing or sliding carrier <NUM> over carrier detent tabs <NUM> in a radial direction generally parallel to axis <NUM> (see also <FIG>). Once engaged, carrier detent tabs <NUM> can prevent radial outward movement of carrier <NUM> from channel <NUM>.

Each carrier <NUM> includes left rails <NUM>. The space between left rails <NUM> defines left slot <NUM>. Similarly each carrier <NUM> includes right rails <NUM>. The space between right rails <NUM> defines right slot <NUM>. Carrier <NUM> can be disposed in channel <NUM> and removably coupled to mandrel <NUM> such that first outer edge <NUM> can be disposed in left slot <NUM> between left rails <NUM>, and second outer edge <NUM> can be disposed in right slot <NUM> between right rails <NUM>. Accordingly, carrier <NUM> can surround first outer edge <NUM> and second outer edge <NUM> such that carrier <NUM> extends across mandrel <NUM> in a tangential direction generally parallel to an axis <NUM> (i.e., a length of carrier <NUM> is generally perpendicular to a radial edge of mandrel <NUM>). In some aspects, left rails <NUM> and right rails <NUM> can retain carrier <NUM> in channel <NUM> in a lateral direction generally parallel to axis <NUM>. In this way, carrier <NUM> can be maintained in channel <NUM> in the lateral direction while rotating in gutter broom <NUM> around central axis <NUM> because left rails <NUM> and right rails <NUM> can prevent lateral movement.

Carriers <NUM> extend radially outward from mandrel <NUM>. Each carrier <NUM> can be slidably arranged in a channel <NUM>. Left slot <NUM> and right slot <NUM> allow carrier <NUM> to slide over first outer edge <NUM> and second outer edge <NUM>. In an aspect, pushing or sliding carrier <NUM> over carrier detent tabs <NUM> for approximately a distance D4 represents the extent to which carrier <NUM> can be radially disposed in channel <NUM>. Channel end <NUM> can provide an abutment at this most forward radial position of carrier <NUM> in channel <NUM>. With reference to <FIG>, in some aspects, first end <NUM> of carrier <NUM> can abut channel end <NUM> at this most forward radial position of carrier <NUM> in channel <NUM>.

As shown in <FIG>, in some aspects, locking member <NUM> can be cantilevered. In an aspect, locking member <NUM> can have an attached end <NUM> and a free end <NUM>. In an aspect, attached end <NUM> can secure locking member <NUM> to a surface of carrier <NUM>. Free end <NUM> can be unattached and can extend away from first end <NUM> of carrier <NUM> towards second end <NUM>. In an aspect, free end <NUM> can include ridges and or knurling to allow a user to better grip free end <NUM> during removal and installation of a bristle strip <NUM>. In some aspects, lock extension <NUM> of locking member <NUM> can extend transversally from free end <NUM>. In this aspect, lock extension <NUM> can extend across second end <NUM> of carrier <NUM>. Accordingly, lock extension <NUM> can extend across second end <NUM> in a tangential direction generally parallel to axis <NUM> (i.e., lock extension <NUM> is positioned generally perpendicular to second end <NUM>, which extends generally parallel to axis <NUM>). In this way, lock extension <NUM> can prevent bristle strip <NUM> positioned in carrier <NUM> from moving radially outwardly. Conversely, lock extension <NUM> can be pivoted away from second end <NUM> to allow bristle strip <NUM> to move radially outwardly, e.g., for servicing or replacement.

As shown in <FIG>, a bristle strip <NUM> can include an upper end <NUM>, a lower end <NUM>, a first end <NUM>, a second end <NUM>, and an insert <NUM>. In some aspects, bristle strip <NUM> can be manufactured continuously in a roll forming operation.

In some aspects, each bristle strip <NUM> can include, for example, approximately fifteen to approximately thirty individual bristles. As discussed above, in an aspect, each bristle strip <NUM> can include bristles folded over a cable. For example, the bristle strip <NUM> can comprise flattened steel wire folded over a steel cable. In some aspects, the bristles can be folded in half over a cable of approximately <NUM> (<NUM> in) in length, In other aspects, the bristles can instead be folded over a composite "core" (i.e., a center mass). In an aspect, bristle strip <NUM> can comprise bristles of approximately <NUM> (<NUM> in) in length. In one aspect, individual bristles of bristle strip <NUM> can be approximately <NUM> to approximately <NUM> wide, and approximately <NUM> to approximately <NUM> hardened spring steel. In another aspect, the bristles can be compacted cable between approximately <NUM> and approximately <NUM> in diameter.

The bristles and cable can further be encased, such as in steel. The encasement can be insert <NUM>. In some aspects, insert <NUM> can prevent bristles from contacting surfaces. In some aspects, the encasement for insert <NUM> can be cut every six inches. In some aspects, the bristles can be wrapped in a steel casing that is approximately <NUM> to approximately <NUM> thick sheet steel. As discussed above, bristle strip <NUM> can be <NUM>% recyclable steel. In some aspects, upper end <NUM> of each bristle strip <NUM> can have a larger cross-sectional area due to the cable. The larger cross-sectional area can allow bristle strip <NUM> to fit tightly into insert <NUM>. In an aspect, lower end <NUM> of each bristle strip <NUM> can extend down from upper end <NUM> and can be unattached (i.e., not coupled to any other component). In an aspect, lower end <NUM> can have a sharp leading edge to better move and/or break down debris along the path of gutter broom <NUM>.

In some aspects, bristle strips <NUM> can comprise one or more of metals, plastics, composites, ceramics, polymers, natural fibers, etc. For example, bristle strips <NUM> can comprise steel, aluminum, nylon, polyester, polypropylene, PVC, vegetable fibers, or hairs. Other aspects provide that bristle strips <NUM> can be composed of other materials, or a blend of materials. For example, a bristle strip <NUM> can have a steel and polypropylene mix. In another aspect, the bristles can comprise polyurethane or other composite material that is approximately <NUM> to approximately <NUM> in diameter. In some aspects, the bristles can be round, and straight or crimped.

In some aspects, one or more bristle strips <NUM> can have different properties based on the types of bristles contained in bristle strip <NUM>. For example, including different types of bristle strips <NUM> having different properties in gutter broom <NUM> can advance and customize cleaning for one or more specific surfaces. For example, gutter brooms generally can be used outdoors to clean streets that require different types or levels of contact (e.g., abrasive or fine). Streets can vary in granularity and can be made from various materials, e.g., concrete, brick, cobblestone, and/or asphalt, each requiring different cleaning methods. Streets can also include growth, such as patches of grass or weeds. In another example, streets can have other natural debris, such as sand, mud, and rocks, or non-natural debris, such as trash and recyclables. Accordingly, cleaning by gutter broom <NUM> can be enhanced to effectively clean these distinct surfaces, growth, and/or debris. Gutter broom <NUM> can also be customized by including fewer bristle strips <NUM>. For example, bristle strips <NUM> can be omitted from mandrel <NUM> to create a paddle-type contact with surfaces, e.g., to clean around snow. In another aspect, bristle strips <NUM> can vary in bristle length (e.g., bristles in bristle strip <NUM> can have different lengths), which can improve cleaning of intermediate surfaces. In this aspect, the surface contacting profile of bristle strip <NUM> can be customized to clean one or more surfaces.

In some aspects, gutter broom <NUM> can include bristle strips <NUM> of different materials to advance and customize cleaning. In some aspects, bristle strips <NUM> of different materials can be included in gutter broom <NUM> to leverage properties of each material. In other aspects, bristle strips <NUM> can be blended, such as by including both steel and polypropylene.

In some aspects, bristle strips <NUM> can vary in stiffness to advance and customize cleaning. For example, bristle strips <NUM> having a greater stiffness can provide abrasive contact to better target certain debris, such as growth along streets and compacted mud. Accordingly, bristle strips <NUM> can be useful for aggressive cleaning to target debris that can be tougher to move and/or break down (i.e., cut), such as growth, compacted mud, rocks, etc. The higher stiffness can reduce buckling and provide an inertial impact to move tougher debris. Bristle strips <NUM> having a higher stiffness that are arranged together (e.g., grouped or adjacently) can grip and/or break down tougher debris more effectively. Bristle strips <NUM> having a lower stiffness can provide can provide a finer contact. Accordingly, bristle strips <NUM> can be useful for finer cleaning to target separations between various surfaces. Greater movement and flexibility can be realized at impact such that first bristle strips <NUM> can buckle to reach crevices, granularity, gaps, etc. Additionally, bristle strips <NUM> can better target lighter debris (e.g., sand) and particulate matter. In some aspects, gutter broom <NUM> can include bristle strips <NUM> having varying stiffness to provide both abrasive and fine contact with surfaces. Stiffness can be determined by material, diameter, cross-sectional area, cross-section geometry, wall thickness, outer layers, coatings for reinforcement, ribbing, elasticity openings, etc. For example, bristle strips <NUM> comprising steel can be crimped to provide greater stiffness. Bristle strips <NUM> can have a cross-sectional geometry that is circular, elliptical, rectangular, or a star, plus sign, etc..

With reference to <FIG>, bristle strips <NUM> can be removably coupled to carriers <NUM>, for example, by sliding bristle strips <NUM> into carriers <NUM>. In some aspects, each bristle strip <NUM> can be arranged in carrier <NUM> such that bristle strip <NUM> can also be oriented obliquely with respect to mandrel <NUM> and channel <NUM>. In some aspects, bristle strips <NUM> can be pushed or slid into carriers <NUM> in a radial direction generally parallel to axis <NUM>. Accordingly, similar to carriers <NUM>, when bristle strips <NUM> are removable coupled to carriers <NUM>, bristle strips <NUM> can extend both upward and downward from mandrel <NUM> in a lateral direction generally parallel to axis <NUM>. In this way, bristle strips <NUM> can extend from mandrel <NUM> at angle, α, from axis <NUM> such that each bristle strip <NUM> can be arranged at an offset with respect to an adjacent bristle strip <NUM>. The offset of each bristle strip <NUM> can prevent each of bristle strips <NUM> from contacting an adjacent bristle strip <NUM> while rotating in gutter broom <NUM> around central axis <NUM>. Additionally, as discussed above, in an aspect, because of the angled arrangement of bristle strips <NUM>, as gutter broom <NUM> rotates about central axis <NUM>, each bristle strip <NUM> can wear more evenly. Because of the distributed wear, bristle strips <NUM> having similar properties can require replacement at the same time.

With reference to <FIG> and <FIG>, in some aspects, carrier <NUM> can be slidably arranged in channel <NUM> by surrounding first outer edge <NUM> and second outer edge <NUM> of mandrel <NUM>. Carrier <NUM> can slide over first outer edge <NUM> and second outer edge <NUM> of mandrel <NUM> such that upper end <NUM> of carrier <NUM> can extend upward from mandrel <NUM> and lower end <NUM> of carrier <NUM> can extend downward from mandrel <NUM>. In an aspect, upper end <NUM> of carrier <NUM> can include locking member <NUM>. The space within upper end <NUM> can include upper cavity <NUM>. Lower end <NUM>, can define the opposing end of carrier <NUM> from upper end <NUM>, and similarly can include lower cavity <NUM>.

In some aspects, each of bristle strips <NUM> can be received within upper cavity <NUM> and lower cavity <NUM> of one of carriers <NUM>. In an aspect, upper end <NUM> of bristle strip <NUM> can be received within upper cavity <NUM>, and lower end <NUM> of bristle strip <NUM> can be received within lower cavity <NUM>.

With reference to <FIG>, in an aspect, upper end <NUM>, having a larger cross-sectional area, can fill upper cavity <NUM>. This can create a press fit such that upper end <NUM> can be secured within upper cavity <NUM> and, consequently, bristle strip <NUM> can be secured in carrier <NUM>. In other aspects, bristle strip <NUM> can be secured in carrier <NUM> by snaps, adhesive, or another attachment method. In some aspects, bristle strip <NUM> can be secured in carrier <NUM> such that first end <NUM> of bristle strip <NUM> can abut first end <NUM> of carrier <NUM>, which, as discussed above, can abut channel end <NUM>. Second end <NUM> can define the opposing end of first end <NUM> and similarly abut second end <NUM> of carrier <NUM>. In some aspects, upper end <NUM> of bristle strip <NUM>, having a larger cross-sectional area, can expand within upper cavity <NUM> of carrier <NUM> such that movement of bristle strip <NUM> in a lateral direction generally parallel to axis <NUM> can be prevented. In some aspects, lock extension <NUM> can extend across upper end <NUM> of carrier <NUM>, and, consequently, upper cavity <NUM> of carrier <NUM>. Accordingly, if bristle strip <NUM> is secured in carrier <NUM>, lock extension <NUM> can extend across second end <NUM> of carrier <NUM> and second end <NUM> of bristle strip <NUM>. This can prevent movement of bristle strip <NUM> in a radial direction generally parallel to axis <NUM>.

As shown in <FIG> in another example, in some aspects, a gutter broom <NUM> includes a mandrel <NUM> that can support one or more carriers <NUM> and one or more bristle strips <NUM>. Gutter broom <NUM> and its components can be similar to gutter broom <NUM> discussed above.

With reference to <FIG>, in some aspects, each carrier <NUM> include a left slot <NUM>, and a right slot <NUM>. In some aspects, carrier <NUM> can include an upper end <NUM>, a lower end <NUM>, an upper cavity <NUM>, a lower cavity <NUM>, a first end <NUM>, a second end <NUM>, a left side <NUM>, a right side <NUM>, a carrier hinge <NUM>, a lock <NUM>, a lock hinge <NUM>, a lock end <NUM>, and a lock tab <NUM>. Carriers <NUM> can be injection molded plastic, in some aspects. Carriers <NUM> can be removably coupled onto gutter broom <NUM> similar to carriers <NUM> on gutter broom <NUM>.

With reference to <FIG> and <FIG>, in some aspects, carriers <NUM> can be oriented obliquely with respect to mandrel <NUM>. For example, carriers <NUM> can extend upward in a lateral direction generally parallel to an axis <NUM>. In some aspects, axis <NUM> can be at an angle, β, from axis <NUM>. Accordingly, carriers <NUM> can extend upward from mandrel <NUM> at an angle, β, from axis <NUM>. Similarly, carriers <NUM> can extend downward from mandrel <NUM> in a lateral direction generally parallel to an axis <NUM>. In some aspects, axis <NUM> can be at an angle, γ, from axis <NUM>. Accordingly, carriers <NUM> can extend downward from mandrel <NUM> at an angle, γ, from axis <NUM>. In some aspects, the angle, β, and the angle, γ, from axis <NUM> can range from approximately <NUM> degrees to approximately <NUM> degrees, such as approximately <NUM> degrees to approximately <NUM> degrees, such as approximately <NUM> degrees. In this way, upper end <NUM> and lower end <NUM> of each carrier <NUM> can be offset with respect to an adjacent carrier <NUM> upper end <NUM> and lower end <NUM>, respectively. In some aspects, carrier <NUM> can be disposed in channel <NUM> and removably coupled to mandrel <NUM> via left slot <NUM> on left side <NUM> and right slot <NUM> on right side <NUM>. In an aspect, left slot <NUM> and right slot <NUM> can allow carrier <NUM> to slide over mandrel <NUM>. In some aspects, left side <NUM> and right side <NUM> surrounding mandrel <NUM> disposed in left slot <NUM> and right slot <NUM> can retain carrier <NUM> in channel <NUM> in a lateral direction generally parallel to axis <NUM> or axis <NUM>. Accordingly, carrier <NUM> can be maintained in channel <NUM> in the lateral direction while rotating in gutter broom <NUM>. In other aspects, carrier <NUM> can be coupled to mandrel <NUM> by snaps, adhesive, or another attachment method. In an aspect, carrier <NUM> can surround mandrel <NUM> such that it extends across mandrel <NUM> in a tangential direction generally parallel to an axis <NUM> (i.e., a length of carrier <NUM> is generally perpendicular to a radial edge of mandrel <NUM>).

As shown in <FIG>, in some aspects, left side <NUM> and right side <NUM> can be hingedly attached to each other via carrier hinge <NUM>. Accordingly, carrier <NUM> can be a clamshell such that left side <NUM> and right side <NUM> can pivot relative to each other. Due to manufacturing constraints, this hinged carrier can allow for more complex internal geometries to better couple to mandrel <NUM> and/or bristle strip <NUM>. In another aspect, carrier <NUM> can be additively manufactured such that hinge <NUM> is not necessary.

With reference to <FIG> and <FIG>, to dispose carrier <NUM> in channel <NUM>, left side <NUM> and right side <NUM> can pivot inwardly about hinge <NUM> and slide over mandrel <NUM> via left slot <NUM> and right slot <NUM>. The inward pivot can allow carrier <NUM> to clear carrier detent tabs <NUM> (see <FIG> for carrier detent tabs <NUM>) such that first end <NUM> of carrier <NUM> can be radially inward of carrier detent tabs <NUM> when carrier <NUM> is disposed in channel <NUM>. In some aspects, left side <NUM> and right side <NUM> can be biased to pivot outwardly. Accordingly, once carrier <NUM> is disposed in channel <NUM>, left side <NUM> and right side <NUM> can pivot outwardly and engage with carrier detent tabs <NUM> via left slot <NUM> and right slot <NUM>. The engagement can retain carrier <NUM> in channel <NUM>. In this way, carrier <NUM> can be secured in a radial direction generally parallel to axis <NUM>. In some aspects, carriers <NUM> can include an additional securing mechanism, such as a tab similar to carrier detent tabs <NUM> that can contact mandrel <NUM> and maintain carrier <NUM> in channel <NUM>.

With reference to <FIG>, in some aspects, lock <NUM> can extend across carrier <NUM> in a tangential direction generally parallel to axis <NUM> (i.e., lock <NUM> is positioned generally perpendicular to second end <NUM>, which extends generally parallel to axes <NUM> and <NUM>). In this way, lock <NUM> can prevent bristle strip <NUM> positioned in carrier <NUM> from moving radially outwardly. Conversely, lock <NUM> can be pivoted away from second end <NUM> to allow bristle strip <NUM> to move radially outwardly, e.g., for servicing or replacement.

With reference to <FIG>, in this aspect, lock <NUM> can extend across second end <NUM> of carrier <NUM>, which can be at the opposite end of carrier <NUM> from first end <NUM>. In some aspects, lock end <NUM> can engage with lock tab <NUM> of carrier <NUM> to securely close across second end <NUM> of carrier <NUM>. In an aspect, lock end <NUM> can be clipped or snapped onto lock tab <NUM> of carrier <NUM> (or otherwise latched). Because of the engagement between lock end <NUM> and lock tab <NUM>, lock <NUM> can be secured in a radial direction generally parallel to axis <NUM>. In an aspect, lock <NUM> can pivot away from second end <NUM> of carrier <NUM> via lock hinge <NUM> (i.e., lock <NUM> can be released). Lock <NUM> can be moved away from second end <NUM> of carrier <NUM> at any time during the life of gutter broom <NUM>, including when carrier <NUM> is coupled to mandrel <NUM> and when gutter broom <NUM> is mounted to and suspended from a vehicle (e.g., vehicle <NUM>). In this way, bristle strips <NUM> can be accessed for replacement when needed.

As shown in <FIG>, bristle strip <NUM> for gutter broom <NUM> can be pre-folded (e.g., bent or curved prior to being inserted into carrier <NUM>). In this way upper end <NUM> and lower end <NUM> can extend relative to each other such that bristle strip <NUM> does not extend generally along axis <NUM> or axis <NUM> in its entirety. This geometry can increase friction between bristle strip <NUM> and carrier <NUM> when bristle strip <NUM> is positioned in carrier <NUM> for better retention of bristle strip <NUM> within carrier <NUM>.

With reference to <FIG> and <FIG>, bristle strips <NUM> can be removably coupled to carriers <NUM>. In some aspects, each bristle strip <NUM> can be arranged in carrier <NUM> such that bristle strip <NUM> can also be oriented obliquely with respect to mandrel <NUM> and channel <NUM>. In some aspects, bristle strips <NUM> can be pushed or slid into carriers <NUM> in a radial direction generally parallel to axis <NUM>. Accordingly, similar to carriers <NUM>, when bristle strips <NUM> are removable coupled to carriers <NUM>, bristle strips <NUM> can extend both upward and downward from mandrel <NUM> in a lateral direction generally parallel to axis <NUM> and axis <NUM>, respectively. Specifically, upper end <NUM> of carrier <NUM> can extend upward from mandrel <NUM> and lower end <NUM> of carrier <NUM> can extend downward from mandrel <NUM>. In aspects, a portion of bristle strips <NUM> can extend from mandrel <NUM> upward at angle, β, from axis <NUM>, and another portion can extend downward at angle, γ, from axis <NUM>. In this way, each bristle strip <NUM> can be arranged at an offset with respect to an adjacent bristle strip <NUM>. The offset of each bristle strip <NUM> can prevent each of bristle strips <NUM> from contacting any adjacent bristle strips <NUM> while rotating in gutter broom <NUM>.

With reference to <FIG>, in an aspect, upper end <NUM> of carrier <NUM> can include lock <NUM>. The space within upper end <NUM> can include upper cavity <NUM>. Lower end <NUM>, can define the opposing end of carrier <NUM> from upper end <NUM>, and similarly can include lower cavity <NUM>. In some aspects, each of bristle strips <NUM> can be received within upper cavity <NUM> and lower cavity <NUM> of one of carriers <NUM>. In an aspect, upper end <NUM> of bristle strip <NUM> can be received within upper cavity <NUM>, and lower end <NUM> of bristle strip <NUM> can be received within lower cavity <NUM>. In an aspect, bristle strip <NUM> can be bent such that when bristle strip <NUM> is slid into carrier <NUM>, upper end <NUM> can fit the shape of upper cavity <NUM> and lower end <NUM> can fit the shape of lower cavity <NUM> such that bristle strip <NUM> can be press fit into carrier <NUM>. Accordingly, movement of bristle strip <NUM> in a lateral direction generally parallel to axis <NUM> or axis <NUM> can be prevented. In this way, when left side <NUM> and right side <NUM> of carrier <NUM> pivot outwardly to engage carrier detent tabs <NUM>, upper cavity <NUM> and lower cavity <NUM> can be shaped to receive and retain bristle strip <NUM>. The friction between and geometry of carrier <NUM> and bristle strip <NUM> can laterally retain bristle strip <NUM>.

In some aspects, lock <NUM> can extend across second end <NUM> of carrier <NUM>, and, consequently, upper cavity <NUM> of carrier <NUM>. Accordingly, if bristle strip <NUM> is secured in carrier <NUM>, lock <NUM> can extend across second end <NUM> of carrier <NUM> and second end <NUM> of bristle strip <NUM>. This can prevent movement of bristle strip <NUM> in a radial direction generally parallel to axis <NUM> (<FIG>). In some aspects, lock <NUM> can completely extend across second end <NUM> at upper cavity <NUM> to prevent movement of bristle strip <NUM> in a radial direction generally parallel to axis <NUM>. Second end <NUM> at upper cavity <NUM> can be completely covered to retain bristle strip <NUM>. In other aspects, bristle strip <NUM> can be coupled to carrier <NUM> by snaps, adhesive, or another attachment method.

In some aspects, lock <NUM> can be pivoted away from second end <NUM> of carrier <NUM> via lock hinge <NUM>. Accordingly, because lock <NUM> is not preventing movement of bristle strip <NUM> in a radial outward direction, bristle strip <NUM> can be removed from carrier <NUM> for servicing or replacement.

An example method of assembly and replacement is shown in <FIG>. The method, which does not form part of the claimed invention, will be described particularly with reference to gutter broom <NUM>, however, it will be appreciated that the method can be applied to gutter broom <NUM>, as well as other gutter brooms contemplated.

For initial assembly, an operator can receive modular components of gutter broom <NUM>, including mandrel <NUM>, carriers <NUM>, and bristle strips <NUM>. Due to their generally flat shape, bristle strips <NUM> can be efficiently packaged and shipped. Bristle strips <NUM> can be received according to the operator's needs. For example, the operator can require bristle strips <NUM> comprising steel wire and/or polypropylene and receive bristle strips <NUM> accordingly.

To initially assemble gutter broom <NUM>, the operator can slide one or more carriers <NUM> onto mandrel <NUM>, as shown in step <NUM>. The operator can repeat this step for each of up to approximately <NUM> carriers <NUM>. For gutter broom <NUM>, this step can include pivoting carriers <NUM> inward and sliding them onto mandrel <NUM>. Once carrier detent tabs <NUM> are cleared, carriers <NUM> can be pivoted outward toward their biased position to engage with carrier detent tabs <NUM> and secure onto mandrel <NUM>. In step <NUM>, the operator can slide one or more bristle strips <NUM> into the one or more carriers <NUM>. The operator can repeat this step for as many carriers, such as up to approximately <NUM> carriers <NUM> or <NUM>, that are removably coupled to mandrel <NUM>. Assembly and servicing can additionally be simple, requiring no tools. A full gutter broom <NUM> can be seen in <FIG>.

As shown in <FIG>, in step <NUM>, the operator can the remove at least one bristle strip <NUM>. This can be to replace or repair bristle strips <NUM>, or to better adapt gutter broom <NUM> to a particular surface, e.g., to provide a less abrasive contact. To remove bristle strips <NUM>, the operator can push the cantilevered locking member <NUM> aside and slide out bristle strip <NUM>. Second end <NUM> of carrier <NUM> can be open such that bristle strip <NUM> can be slid out when locking member <NUM> is pushed aside. Gutter broom <NUM> with a bristle strip <NUM> removed can be seen in <FIG>. For gutter broom <NUM>, lock <NUM> can be pivoted away from second end <NUM> of carrier <NUM> by unclipping lock end <NUM> from lock tab <NUM> of carrier <NUM> (i.e., releasing lock <NUM>). Bristle strip <NUM> can be slid out once lock <NUM> is cleared from second end <NUM> of carrier <NUM>. As discussed above, as gutter broom <NUM> rotates about central axis <NUM>, each bristle strip <NUM> can wear more evenly. Because of the distributed wear, bristle strips <NUM> having the same properties and that are assembled together can require replacement at the same time.

In an aspect, steps <NUM> and <NUM> can be performed more regularly than steps <NUM> and <NUM> to maintain and/or repair gutter broom <NUM>. Thus, replacement of bristle strips <NUM> is considered to be high frequency maintenance, while replacement of carriers <NUM> is considered to be low frequency maintenance.

In some aspects, bristle strip <NUM> can be removably coupled to carrier <NUM> prior to carrier <NUM> being removably coupled to mandrel <NUM> and disposed in channel <NUM> of mandrel <NUM>. Bristle strip <NUM> can alternatively be removably coupled to carrier <NUM> once carrier <NUM> is removably coupled to mandrel <NUM> and disposed in channel <NUM>. Accordingly, bristle strip <NUM> can be removed from carrier <NUM> both before and after carrier <NUM> is removably coupled to mandrel <NUM> and disposed in channel <NUM>.

Typically, only bristle strips <NUM> need to be replaced due to wear, but occasionally carrier <NUM> might need to be replaced due to damage or wear. As shown in <FIG>, in step <NUM>, the operator can remove at least one carrier <NUM> that receives a bristle strip <NUM>. Carrier <NUM> cannot be removed while it contains a bristle strip <NUM>. So bristle strip <NUM> (step <NUM>) must be removed prior to removing carrier <NUM> (step <NUM>). To remove carriers <NUM>, the operator can slide carriers <NUM> over first outer edges <NUM> and second outer edges <NUM>, including over carrier detent tabs <NUM> for approximately a distance D4 (<FIG>). Gutter broom <NUM> with a carrier <NUM> removed can be seen in <FIG>. In some aspects, carrier <NUM> can be removed from mandrel <NUM> while bristle strip <NUM> is removably coupled to carrier <NUM>. Accordingly, carrier <NUM> and a bristle strip <NUM> received in carrier <NUM> can be removed from mandrel <NUM> at once.

In an aspect, carrier <NUM> can contact surfaces and/or debris with less frequency than bristle strip <NUM>. Accordingly, in an aspect, carrier <NUM> can have a lower replacement frequency than bristle strip <NUM>. In an aspect, mandrel <NUM> can have a lower replacement frequency than both carrier <NUM> and bristle strip <NUM>. Mandrel <NUM> and/or carrier <NUM> can be replaced if either experiences significant damage or wear. Replacement of mandrel <NUM>, carrier <NUM>, and/or bristle strip <NUM> can also require no tools.

The present invention has been described above with the aid of functional building blocks illustrating the implementation of specified functions and relationships thereof.

The foregoing description of the specific aspects will so fully reveal the general nature of the invention that others can, by applying knowledge within the skill of the art, readily modify and/or adapt for various applications such specific aspects, without undue experimentation, without departing from the general concept of the present invention. Therefore, such adaptations and modifications are intended to be within the scope of the invention, based on the teaching and guidance presented herein. It is to be understood that the phraseology or terminology herein is for the purpose of description and not of limitation, such that the terminology or phraseology of the present specification is to be interpreted by the skilled artisan in light of the teachings and guidance.

Claim 1:
A gutter broom (<NUM>), comprising:
a mandrel (<NUM>) including a channel (<NUM>) that extends outwardly from an inner radial edge (<NUM>) at a non-zero angle relative to a centerline (<NUM>) of the mandrel (<NUM>);
a retaining carrier (<NUM>) positioned in the channel (<NUM>) and coupled to the mandrel (<NUM>), the retaining carrier (<NUM>) comprising a left slot (<NUM>) and a right slot (<NUM>) to receive the mandrel (<NUM>); and
a bristle strip (<NUM>) coupled to the carrier (<NUM>) such that it is retained, the bristle strip (<NUM>) extending down from the carrier (<NUM>).