US20080000169A1 - Gutter cover - Google Patents
Gutter cover Download PDFInfo
- Publication number
- US20080000169A1 US20080000169A1 US11/477,362 US47736206A US2008000169A1 US 20080000169 A1 US20080000169 A1 US 20080000169A1 US 47736206 A US47736206 A US 47736206A US 2008000169 A1 US2008000169 A1 US 2008000169A1
- Authority
- US
- United States
- Prior art keywords
- gutter cover
- cover
- eavestrough
- clip
- gutter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/076—Devices or arrangements for removing snow, ice or debris from gutters or for preventing accumulation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0027—Cutting off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
Definitions
- the present invention relates to a gutter cover and in particular, to a gutter cover that can be applied to a number of different types of eavestrough systems and is designed to produce a water sheeting effect as the rain water moves across the gutter cover.
- eavestroughing systems are a significant maintenance problem with respect to the accumulation of seeds, sticks and leaves that fall from adjacent trees. It is known to retrofit such eavestrough systems with a perforated mesh of a metal or plastic which is basically supported in the eavestrough at or slightly below the edge of the eavestrough.
- perforated eavestrough covers are effective in some situations, however, the perforations allow some debris to pass therethrough and depending upon the particular environment, these perforated eavestrough covers are not satisfactory. Leaves and sticks can also become lodged in the perforations and cause further difficulties. Often such perforation covers reduce the problem associated with debris accumulation in the eavestrough but may require cleaning of the covers themselves from accumulated debris.
- a different approach for eavestrough covers is to use a solid cover and provide the cover with a rounded transition section positioned adjacent the front edge of the eavestrough. Water due to surface tension, tends to follow the rounded transition whereas debris tends to be discharged off the eavestrough cover. Below the rounded transition is a series of gaps for allowing the water to enter the eavestrough. With these systems there are no perforations on the upper surface and thus, the accumulation of debris on the cover is significantly reduced.
- the present invention relates to improvements in eavestrough solid covers and to disperse of rivulets of water which are formed on the roof. Such rivulets are effectively disbursed to form a sheet like water layer on the eavestrough cover. This sheet like layer more closely follows the rounded transition contour of the eavestrough cover and directs water into the eavestrough while separating debris from the water.
- the present invention is directed to a system which can be secured in a quick and effective retrofit manner to a number of different eavestrough systems of different materials.
- the invention is also directed to an efficient method for producing the solid eavestrough gutter cover.
- An eavestrough gutter cover is made of an extruded plastic material and comprises a cover segment, a rounded transition edge, and an undercut angled section joining with a perforated pass through portion located beneath the covered segment.
- the perforated pass through portion allows water to freely pass therethrough.
- the perforated pass through portion includes an integral resilient clip sized for securing of the gutter cover to an eavestrough edge or to an upper fastening portion of an eavestrough hook.
- the eavestrough gutter cover is designed for use on many plastic eavestrough systems that include what is referred to as a hidden hook.
- the hidden hook engages the inside front edge of the eavestrough and is effectively hidden from view by the eavestrough.
- These hooks typically include an upper flange for engaging an eavestrough cover and retaining an eavestrough cover.
- the present eavestrough gutter cover has the resilient clip for securing to such hooks.
- the resilient clip is somewhat oversized to define a significant recess therebehind. This recess is designed for accommodating the rolled or folded edge of a metal eavestrough. With aluminum eavestroughing systems, the gutter cover directly engages the inside rolled edge of the eavestrough.
- the resilient clip extends below the pass through portion.
- the resilient clip includes an upwardly and outwardly angled return ramp formed to one side of the pass through portion.
- the ramp terminates at a position below the rounded transition edge and at a forward position inwardly of the rounded transition edge.
- the covered segment includes a textured upper surface adjacent the rounded transition edge that serves to slow water runoff, break up rivulets, and improve flow of water runoff around the transition edge for collection and discharge through the pass through portion of the gutter cover.
- the covered segment includes in a generally central position across the width thereof, an integral hinge allowing the cover segment when installed to have an angled section joining a horizontal section with the horizontal section separating the angled section from the rounded transition edge. This serves to further slow the water prior to the water encountering the transition edge. The slowing of the water and the textured upper surface will also serve to spread any rivulets of water.
- the resilient clip includes an oversized recess located behind a narrow forward slot that when forced open includes a memory function urging the resilient clip to return towards the narrow forward slot position and thus secure the resilient clip to a component inserted therein.
- the resilient clip is preferably installed on metal eavestrough by first inserting an end portion of the clip onto the eavestrough and then progressively insert the edge of the eavestrough into the clip along the length of the gutter cover.
- FIG. 1 is a sectional view showing the eavestrough cover secured above a plastic eavestroughing system
- FIG. 2 is a partial perspective view from underneath showing the gutter cover and the trapezoidal ports and “C” clip fastening arrangement;
- FIG. 3 is a partial perspective view of the eavestrough gutter cover and the textured upper surface thereof;
- FIG. 4 is a partial perspective view of the extension die
- FIG. 5 is a partial perspective view of the gutter cover as outputted from the extension die
- FIG. 6 is a partial perspective view of the gutter cover passing through a first preformer
- FIG. 7 is a partial perspective view of the gutter cover downstream of the first preformer being embossed
- FIG. 8 is a partial perspective view of the gutter cover passing through a second preformer with an angled transition added adjacent the “C” clip;
- FIG. 9 is a partial perspective view of the gutter cover passing through a calibrator completing the forming of the transition segment adjacent the “C” clip;
- FIG. 10 is a partial sectional view through the calibrator cooling tank
- FIG. 11 is a partial perspective view of the gutter cover after the calibrator.
- FIG. 12 illustrates the final punching operation.
- the gutter cover 2 shown in FIG. 1 has a cover segment 4 which extends across the top of the eavestrough and partially extends under the shingles of the roof as shown at 5 .
- the rounded transition 6 merges with the cover 4 at a forward edge of the eavestrough 100 with the undercut angled section 8 located beneath the rounded transition 6 .
- Water passes over the cover segment 4 as it leaves the roof 9 and effectively spreads out and slows on the cover segment 4 .
- the water then follows the rounded transition whereas debris such as leaves and sticks will merely fall outside of the eavestrough.
- the undercut angled section 8 directs the water downwardly and rearwardly.
- the perforated pass through portion 10 is provided at the base of the undercut angled section 8 and allows the water to leave the gutter cover and enter the eavestrough 100 .
- the perforated pass through as shown in FIGS. 2 and 3 have a series of alternating trapezoidal sections 15 such that the walls 17 between adjacent perforations 15 are at an angle. In this way, water that passes along the undercut angled section 8 will encounter a perforation and will have a tendency to pass through the eavestrough gutter cover and into the eavestrough. The water either encounters the top edge of a perforation 15 or leaves the angled wall 17 .
- the integral resilient clip 14 is located at a front edge of the eavestrough cover 2 and is designed for engaging a rearwardly extending flange 101 of the plastic hidden eavestrough hook 102 as shown in FIG. 1 .
- Adjacent a front edge of the gutter cover and above the resilient clip 14 is the ramp edge 18 .
- the ramp edge 18 is preferably parallel outwardly angled relative tot he angled section 8 of the final product. This provides easier access for the eventual pending operation. This serves to partially stiffen the upper arm 24 of the resilient clip and to also act as a last barrier for any water which has not been discharged through the perforated pass through portion 10 .
- the lower arm 26 of the resilient clip includes a weakened portion 29 forming an integral hinge point 28 . This runs the length of the eavestrough cover.
- the resilient clip 14 is designed to have sufficient strength for engaging and being retained by the hidden eavestrough hook 102 where these eavestrough hooks are spaced every several feet along the front edge of the eavestrough.
- the resilient clip is designed to be inserted over a folded or rolled inside edge of a metal eavestrough such as a rolled aluminum eavestrough.
- the resilient clip 14 is oversized for engaging a rolled edge of a metal eavestrough, such as aluminum eavestrough commonly used in new construction installation and for retrofit applications.
- the resilient clip 14 is relatively strong and for insertion on the metal eavestrough, it is more convenient to initially insert the clip at one end of the eavestrough cover and progressively apply the clip to the edge by moving along the eavestrough cover.
- the clip is forced open and includes an integral return bias due to memory of the clip.
- the cover segment 4 includes a textured upper surface 29 ( FIG. 3 ) formed during the forming process of the gutter cover.
- An embossing operation applies a textured surface which is recognizable by touch but is relatively minimal.
- the textured surface varies approximately 2.8 to 3.6 microns.
- a typical roofing system is designed to direct water away from the edge of the roof and often the rain water strikes the gutter cover in rivulets. These rivulets have a significant flow and the water is somewhat concentrated in the rivulets as it strikes the gutter cover. This flow of rainwater off the roof also tends to bring with it leaves, seeds and other debris. It is important with the eavestrough gutter cover to provide a system where debris does not accumulate in the eavestrough, however, this must be balanced with the ability of the system to effectively direct the water towards the eavestrough system. It has been found that the texturing of the upper surface of the gutter cover acts to disperse the rivulets and cause a sheeting action of the water across the gutter cover.
- this gutter cover is effective with many different eavestroughing systems including conventional rolled metal eavestroughing systems as well as plastic/vinyl systems.
- many eavestroughing systems about a house there may be a particular area where leaf accumulation within the eavestrough is a problem.
- the solid vinyl gutter cover in the present invention can easily be applied to the sections of the eavestrough having such problems.
- the gutter cover sections are sold in lengths of 1.8 inch increments and can easily be cut to the required length. Any obstructions such as hooks, for example, in a metal eavestrough, can be accommodated merely by cutting out a portion of the clip of the gutter cover. At corners, it is preferable to provide a 45 degree miter.
- the thin gauge of the plastic gutter cover makes it very easy to cut either with a saw or with a razor knife.
- FIG. 4 shows the extrusion die 150 used to initially extrude the eavestrough cover 2 .
- the die 150 includes a semi circular gap 152 whereby the gutter cover is extruded in a shape corresponding to about two thirds of a circular pipe.
- This partial circular shape allows better balancing of the extrusion process and thus allows faster extrusion of the solid gutter cover.
- the gutter cover goes through a series of steps to apply the textured surface and to effectively impart the desired shape to the gutter cover. These progressively alter the semi circular type shape to the generally flat final shape of FIG. 12 .
- One of the significant problems associated with extruding of the gutter cover is the ability to maintain the shape of the resilient clip 14 .
- a cooling pipe 160 is associated with the gutter cover immediately downstream of the extrusion die 150 and this cooling pipe serves to maintain the separation and shape of the upper arm 24 and lower arm 26 and the clip 14 .
- This pipe 160 removes heat from the extruded product as it is positioned within the resilient clip and serves to maintain this initial shape.
- This cooling pipe extends a certain distance downstream of the die until sufficient heat has been removed that the arms of the resilient clip are still resilient but the tendency of the clip to collapse on itself has been removed. An air flow is provided through the pipe and discharged out the end of pipe 160 into the length of the clip.
- the gutter cover subsequently passes through a series of steps including first and second performers to partially flatten the eavestrough cover and progressively form the transition edge.
- FIGS. 4 through 12 illustrate the process.
- the semi-circular shape of the product extruded from die 150 is required to go through a number of transitional steps to produce the product as finally shown in FIG. 12 .
- the “C” clip 14 has a tendency to collapse upon itself and the cooling pipe 160 effectively separates the upper arm 24 from the lower arm 26 and maintains the shape of the clip.
- the product as it exits the die 150 may be at a temperature of approximately 350° F. and the plastic is very soft and somewhat flowing.
- the cooling pipe 160 starts to remove heat from the “C” clip while maintaining the desired shape thereof.
- additional air may be provided to partially cool the remaining portion of the gutter cover as shown by the air outlet 165 .
- FIG. 6 shows the gutter cover passing through a first preformer 170 where the semi-circular product is partially flattened but remains in an arc shape.
- the preformer 170 has a particular slot 172 which acts as a guide for the desired shape and the preformer 170 is water cooled.
- the preformer does have a significant clearance with respect to the product but it does impart the general shape as shown in FIG. 6 .
- Heat is continuing to be removed from the product between the extrusion die 150 and the preformer 170 .
- Downstream of the first preformer is an embossing arrangement comprising a support roller 180 provided on the lower surface of the gutter cover and a textured embossing roller 182 engaging the upper surface of the gutter cover.
- the embossing roller 182 effectively embosses a large portion of the upper surface of the gutter cover but does not engage the resilient clip 14 .
- the purpose of the embossing roller is to texture the upper surface to effect dispersion of the water and evening of the water flow across the surface of the gutter cover.
- the textured surface also improves water adhesion as water passes around the rounded transition for discharge through the trapezoidal ports.
- the textured surface stops at the trapezoidal ports.
- the embossing roller and the support roller 180 are both water cooled and are quite effective in removing heat from the gutter cover. The more significant problem is trying to remove heat from the resilient clip and keep it within a reasonable temperature range relative to the cooler portion of the gutter cover contacted by the embossing roller and support roller.
- the product leaving the embossing roller may be in the order of 150° F. to 200° F.
- a second preformer 190 is shown in FIG. 8 and forms the angled section 8 and what will become the rounded transition 6 . Again the preformer 190 is water cooled and the product defining slot 192 is slightly oversized relative to the gutter cover. This is important as the embossed surface 19 is to be maintained.
- the calibrator 200 is shown which is used to impart the final shape and dimensions to the product.
- the calibrator 200 includes a vacuum arrangement engaging the lower surface of the gutter cover but the top surface is not subject to a vacuum which would provide more accuracy with respect to the gutter cover. Such a top vacuum would draw the surface 19 into engagement with a calibrator 200 and seriously reduce the embossed surface 19 provided on the upper surface of the gutter cover.
- FIG. 10 shows a section through the calibrator with a series of vacuum ports 210 provided on the lower surface of the calibrator while the top surface of the gutter cover is not subject to a vacuum.
- the calibrator 200 connects to and forms part of the cooling tank 230 having a water level 232 slightly above the upper surface of the gutter cover. Some leakage of water along the upper surface of the gutter cover is shown as 234 , however, the movement of the gutter cover through the calibrator avoids any water on the upper surface at the inlet to the calibrator.
- the gutter cutter is discharged to the tank below the water level and the product is finally cooled.
- the final shaping does impart a hinged line 240 which allows bending of the cover adjacent a roof side edge necessary to form a transition between the angled roof and a more flat surface of the gutter cover used to slow the water.
- FIG. 11 shows the final shape of the gutter cover with the exception that the trapezoidal ports 15 have not been formed in the cover.
- a punch 300 can enter through the gap 302 to effect the formation of the ports provided at the base of the angled section 8 .
- the gap 302 tapers inwardly but has a sufficiently large mouth to allow the punch 302 to enter the gap and effect the formation of the ports.
- two punches are used at a time for forming two ports with the gutter cover progressively moving through a punching station.
- one of these punches is not operated at a position where the gutter cover is to be cut.
- the gutter cover is provided in a certain length, such as three or four feet, and at a cut position, one of the trapezoidal ports 14 is not punched and this provides an end section to each of the two gutter cover pieces.
- a significant problem encountered in manufacturing this product is effecting heat removal in a controlled manner to reduce or eliminate distortion.
- the embossing rollers remove a large amount of heat while the clip area remains at a higher temperature. Additional cooling air is directed to the clip portion which is not in contact with the embossing rollers. The process reduces the temperature differential across the width of the gutter cover to avoid warpage.
- the gutter cover is progressively altered in shape by first and second performers that are water cooled.
- any precise sizing of the gutter cover downstream of the embosser such as common in double sided vacuum arrangements, would remove this desired textured surface.
- the calibrator is associated with a water tank 230 and there is some water weepage along the calibrator to provide the necessary seal for vacuum forming.
- a vacuum source is provided at the bottom of the die, however, the top surface does not have vacuum ports supplied thereto in order to maintain the textured surface.
- the water in the tank 230 is above the surface of the gutter cover.
- the water level in the tank is adjusted to maintain the seal of the final calibrator with the gutter cover while avoiding water flow through the die.
- the water on the upper surface of the gutter cover in the die effectively provides the vacuum seal.
- the part can be sized and shaped to its final shape and shown in the drawings while maintaining the textured upper surface.
- the final part after leaving the final sizing die is passed through a water bath and effectively cooled.
- the gutter cover then continues to be punched and cut in a cutting and punch station.
- a gutter cover of a length of 1.8 inch increments has a series of punching steps as it moves through the device. Two punches are used at a cut transition, one of the punches does not strike. This provides a solid section and this solid section is then cut to provide a strong end portion.
- the present method extrudes a generally semi circular type product with a resilient clip at one end thereof.
- This product is then partially straightened and embossed on a substantial portion of the width of the product as part of the manufacturing process.
- the angled section is then imparted to the product with the clip at an exposed end thereof.
- Subsequent steps are taken to effect final forming of the product through a die in a manner to impart a reversed transition of the angled section while defining a progressively opening gap in an undercut portion. This progressively opening portion is located below the rounded transition and is necessary to allow effective punching of the gutter cover to form the perforated pass through section.
- the punches used to form the perforated section are of a trapezoidal shape with these trapezoidal shapes partially overlapping to form angled bridging sections. These angled bridging sections are maintained to a minimum and are disposed at alternate angles whereby water flow around the rounded transition will encounter a perforation.
- the angled walls of the perforated section improve the amount of water entering the trough.
- These angled walls 17 also have the purpose of acting as a brace or support edge for the front clip and serve to connect the front clip to the remaining portion of the cover.
- This bracing serves to provide sufficient strength to maintain the shape of the cover and avoid sagging between eavestrough hooks which may be present or effective support between the front edge of the eavestrough and where the cover is supported beneath the shingles.
- the bracing strength is balanced against the ability of the system to direct water into the eavestrough.
Abstract
Description
- The present invention relates to a gutter cover and in particular, to a gutter cover that can be applied to a number of different types of eavestrough systems and is designed to produce a water sheeting effect as the rain water moves across the gutter cover.
- In many situations, eavestroughing systems are a significant maintenance problem with respect to the accumulation of seeds, sticks and leaves that fall from adjacent trees. It is known to retrofit such eavestrough systems with a perforated mesh of a metal or plastic which is basically supported in the eavestrough at or slightly below the edge of the eavestrough. Such perforated eavestrough covers are effective in some situations, however, the perforations allow some debris to pass therethrough and depending upon the particular environment, these perforated eavestrough covers are not satisfactory. Leaves and sticks can also become lodged in the perforations and cause further difficulties. Often such perforation covers reduce the problem associated with debris accumulation in the eavestrough but may require cleaning of the covers themselves from accumulated debris.
- A different approach for eavestrough covers is to use a solid cover and provide the cover with a rounded transition section positioned adjacent the front edge of the eavestrough. Water due to surface tension, tends to follow the rounded transition whereas debris tends to be discharged off the eavestrough cover. Below the rounded transition is a series of gaps for allowing the water to enter the eavestrough. With these systems there are no perforations on the upper surface and thus, the accumulation of debris on the cover is significantly reduced.
- The present invention relates to improvements in eavestrough solid covers and to disperse of rivulets of water which are formed on the roof. Such rivulets are effectively disbursed to form a sheet like water layer on the eavestrough cover. This sheet like layer more closely follows the rounded transition contour of the eavestrough cover and directs water into the eavestrough while separating debris from the water. In addition, the present invention is directed to a system which can be secured in a quick and effective retrofit manner to a number of different eavestrough systems of different materials.
- The invention is also directed to an efficient method for producing the solid eavestrough gutter cover.
- An eavestrough gutter cover according to the present invention is made of an extruded plastic material and comprises a cover segment, a rounded transition edge, and an undercut angled section joining with a perforated pass through portion located beneath the covered segment. The perforated pass through portion allows water to freely pass therethrough. The perforated pass through portion includes an integral resilient clip sized for securing of the gutter cover to an eavestrough edge or to an upper fastening portion of an eavestrough hook.
- The eavestrough gutter cover is designed for use on many plastic eavestrough systems that include what is referred to as a hidden hook. The hidden hook engages the inside front edge of the eavestrough and is effectively hidden from view by the eavestrough. These hooks typically include an upper flange for engaging an eavestrough cover and retaining an eavestrough cover. The present eavestrough gutter cover has the resilient clip for securing to such hooks. In addition, the resilient clip is somewhat oversized to define a significant recess therebehind. This recess is designed for accommodating the rolled or folded edge of a metal eavestrough. With aluminum eavestroughing systems, the gutter cover directly engages the inside rolled edge of the eavestrough.
- In a preferred aspect of the eavestrough gutter cover, the resilient clip extends below the pass through portion.
- In a further aspect of the invention, the resilient clip includes an upwardly and outwardly angled return ramp formed to one side of the pass through portion.
- In yet a further aspect of the invention, the ramp terminates at a position below the rounded transition edge and at a forward position inwardly of the rounded transition edge.
- In a further aspect of the invention, the covered segment includes a textured upper surface adjacent the rounded transition edge that serves to slow water runoff, break up rivulets, and improve flow of water runoff around the transition edge for collection and discharge through the pass through portion of the gutter cover.
- In yet a further aspect of the invention, the covered segment includes in a generally central position across the width thereof, an integral hinge allowing the cover segment when installed to have an angled section joining a horizontal section with the horizontal section separating the angled section from the rounded transition edge. This serves to further slow the water prior to the water encountering the transition edge. The slowing of the water and the textured upper surface will also serve to spread any rivulets of water.
- In yet a further aspect of the invention, the resilient clip includes an oversized recess located behind a narrow forward slot that when forced open includes a memory function urging the resilient clip to return towards the narrow forward slot position and thus secure the resilient clip to a component inserted therein.
- The resilient clip is preferably installed on metal eavestrough by first inserting an end portion of the clip onto the eavestrough and then progressively insert the edge of the eavestrough into the clip along the length of the gutter cover.
- Preferred embodiments of the invention are shown in the drawings, wherein:
-
FIG. 1 is a sectional view showing the eavestrough cover secured above a plastic eavestroughing system; -
FIG. 2 is a partial perspective view from underneath showing the gutter cover and the trapezoidal ports and “C” clip fastening arrangement; -
FIG. 3 is a partial perspective view of the eavestrough gutter cover and the textured upper surface thereof; -
FIG. 4 is a partial perspective view of the extension die; -
FIG. 5 is a partial perspective view of the gutter cover as outputted from the extension die; -
FIG. 6 is a partial perspective view of the gutter cover passing through a first preformer; -
FIG. 7 is a partial perspective view of the gutter cover downstream of the first preformer being embossed; -
FIG. 8 is a partial perspective view of the gutter cover passing through a second preformer with an angled transition added adjacent the “C” clip; -
FIG. 9 is a partial perspective view of the gutter cover passing through a calibrator completing the forming of the transition segment adjacent the “C” clip; -
FIG. 10 is a partial sectional view through the calibrator cooling tank; -
FIG. 11 is a partial perspective view of the gutter cover after the calibrator; and -
FIG. 12 illustrates the final punching operation. - The
gutter cover 2 shown inFIG. 1 has acover segment 4 which extends across the top of the eavestrough and partially extends under the shingles of the roof as shown at 5. Therounded transition 6 merges with thecover 4 at a forward edge of theeavestrough 100 with the undercut angled section 8 located beneath therounded transition 6. Water passes over thecover segment 4 as it leaves the roof 9 and effectively spreads out and slows on thecover segment 4. The water then follows the rounded transition whereas debris such as leaves and sticks will merely fall outside of the eavestrough. The undercut angled section 8 directs the water downwardly and rearwardly. - The perforated pass through
portion 10 is provided at the base of the undercut angled section 8 and allows the water to leave the gutter cover and enter theeavestrough 100. The perforated pass through as shown inFIGS. 2 and 3 have a series of alternatingtrapezoidal sections 15 such that thewalls 17 betweenadjacent perforations 15 are at an angle. In this way, water that passes along the undercut angled section 8 will encounter a perforation and will have a tendency to pass through the eavestrough gutter cover and into the eavestrough. The water either encounters the top edge of aperforation 15 or leaves theangled wall 17. - The integral
resilient clip 14 is located at a front edge of theeavestrough cover 2 and is designed for engaging a rearwardly extendingflange 101 of the plastic hiddeneavestrough hook 102 as shown inFIG. 1 . Adjacent a front edge of the gutter cover and above theresilient clip 14 is theramp edge 18. Theramp edge 18 is preferably parallel outwardly angled relative tot he angled section 8 of the final product. This provides easier access for the eventual pending operation. This serves to partially stiffen theupper arm 24 of the resilient clip and to also act as a last barrier for any water which has not been discharged through the perforated pass throughportion 10. As can be appreciated, due to surface tension and a capillary action, water will pass around therounded transition 6 and this desirable property allows the redirection of water towards theperforated section 10. This same surface tension can result in some water clearing the perforated pass throughportion 10. Theramp edge 18 further slows any water and acts as a final deterrent whereby water is directed to the perforated pass through 10. - The
lower arm 26 of the resilient clip includes a weakenedportion 29 forming anintegral hinge point 28. This runs the length of the eavestrough cover. Theresilient clip 14 is designed to have sufficient strength for engaging and being retained by thehidden eavestrough hook 102 where these eavestrough hooks are spaced every several feet along the front edge of the eavestrough. In addition, the resilient clip is designed to be inserted over a folded or rolled inside edge of a metal eavestrough such as a rolled aluminum eavestrough. As shown inFIG. 1 , theresilient clip 14 is oversized for engaging a rolled edge of a metal eavestrough, such as aluminum eavestrough commonly used in new construction installation and for retrofit applications. Theresilient clip 14 is relatively strong and for insertion on the metal eavestrough, it is more convenient to initially insert the clip at one end of the eavestrough cover and progressively apply the clip to the edge by moving along the eavestrough cover. The clip is forced open and includes an integral return bias due to memory of the clip. - The
cover segment 4 includes a textured upper surface 29 (FIG. 3 ) formed during the forming process of the gutter cover. An embossing operation applies a textured surface which is recognizable by touch but is relatively minimal. The textured surface varies approximately 2.8 to 3.6 microns. - It has been found that a typical roofing system is designed to direct water away from the edge of the roof and often the rain water strikes the gutter cover in rivulets. These rivulets have a significant flow and the water is somewhat concentrated in the rivulets as it strikes the gutter cover. This flow of rainwater off the roof also tends to bring with it leaves, seeds and other debris. It is important with the eavestrough gutter cover to provide a system where debris does not accumulate in the eavestrough, however, this must be balanced with the ability of the system to effectively direct the water towards the eavestrough system. It has been found that the texturing of the upper surface of the gutter cover acts to disperse the rivulets and cause a sheeting action of the water across the gutter cover. This serves to improve the properties of the water flowing around the
rounded transition 6 and also serves to slow the water as it travels across the cover. In some conditions, certain debris may remain on the gutter cover temporarily, however, it will blow off or flow off, depending upon the particular circumstances. Thus, it is desirable to slow the water flow and improve the redirection of the water flow around the rounded transition and rearwardly and downwardly towards the eavestrough. At the base of the angled section 8, it is desirable for the water to not encounter any portion of the plastic cover so it can enter the eavestrough located below this perforated portion. The angling of the perforation walls and the minimal size of any connectingwalls 17 assures more water enters the eavestrough. - It has been found that this gutter cover is effective with many different eavestroughing systems including conventional rolled metal eavestroughing systems as well as plastic/vinyl systems. In many eavestroughing systems about a house, there may be a particular area where leaf accumulation within the eavestrough is a problem. The solid vinyl gutter cover in the present invention can easily be applied to the sections of the eavestrough having such problems.
- The gutter cover sections are sold in lengths of 1.8 inch increments and can easily be cut to the required length. Any obstructions such as hooks, for example, in a metal eavestrough, can be accommodated merely by cutting out a portion of the clip of the gutter cover. At corners, it is preferable to provide a 45 degree miter. The thin gauge of the plastic gutter cover makes it very easy to cut either with a saw or with a razor knife.
-
FIG. 4 shows the extrusion die 150 used to initially extrude theeavestrough cover 2. Thedie 150 includes a semicircular gap 152 whereby the gutter cover is extruded in a shape corresponding to about two thirds of a circular pipe. This partial circular shape allows better balancing of the extrusion process and thus allows faster extrusion of the solid gutter cover. After the initial extrusion, the gutter cover goes through a series of steps to apply the textured surface and to effectively impart the desired shape to the gutter cover. These progressively alter the semi circular type shape to the generally flat final shape ofFIG. 12 . One of the significant problems associated with extruding of the gutter cover is the ability to maintain the shape of theresilient clip 14. - As shown in
FIG. 4 , acooling pipe 160 is associated with the gutter cover immediately downstream of the extrusion die 150 and this cooling pipe serves to maintain the separation and shape of theupper arm 24 andlower arm 26 and theclip 14. Thispipe 160 removes heat from the extruded product as it is positioned within the resilient clip and serves to maintain this initial shape. This cooling pipe extends a certain distance downstream of the die until sufficient heat has been removed that the arms of the resilient clip are still resilient but the tendency of the clip to collapse on itself has been removed. An air flow is provided through the pipe and discharged out the end ofpipe 160 into the length of the clip. - The gutter cover subsequently passes through a series of steps including first and second performers to partially flatten the eavestrough cover and progressively form the transition edge.
FIGS. 4 through 12 illustrate the process. - The semi-circular shape of the product extruded from
die 150 is required to go through a number of transitional steps to produce the product as finally shown inFIG. 12 . The “C”clip 14 has a tendency to collapse upon itself and thecooling pipe 160 effectively separates theupper arm 24 from thelower arm 26 and maintains the shape of the clip. The product as it exits thedie 150, depending upon the particular material, may be at a temperature of approximately 350° F. and the plastic is very soft and somewhat flowing. Thecooling pipe 160 starts to remove heat from the “C” clip while maintaining the desired shape thereof. In addition, as the product exits the die, additional air may be provided to partially cool the remaining portion of the gutter cover as shown by theair outlet 165. -
FIG. 6 shows the gutter cover passing through afirst preformer 170 where the semi-circular product is partially flattened but remains in an arc shape. Thepreformer 170 has aparticular slot 172 which acts as a guide for the desired shape and thepreformer 170 is water cooled. The preformer does have a significant clearance with respect to the product but it does impart the general shape as shown inFIG. 6 . Heat is continuing to be removed from the product between the extrusion die 150 and thepreformer 170. Downstream of the first preformer is an embossing arrangement comprising asupport roller 180 provided on the lower surface of the gutter cover and atextured embossing roller 182 engaging the upper surface of the gutter cover. Theembossing roller 182 effectively embosses a large portion of the upper surface of the gutter cover but does not engage theresilient clip 14. - The purpose of the embossing roller is to texture the upper surface to effect dispersion of the water and evening of the water flow across the surface of the gutter cover. The textured surface also improves water adhesion as water passes around the rounded transition for discharge through the trapezoidal ports. Preferably, the textured surface stops at the trapezoidal ports. The embossing roller and the
support roller 180 are both water cooled and are quite effective in removing heat from the gutter cover. The more significant problem is trying to remove heat from the resilient clip and keep it within a reasonable temperature range relative to the cooler portion of the gutter cover contacted by the embossing roller and support roller. The product leaving the embossing roller may be in the order of 150° F. to 200° F. - Although the gutter cover has passed through the embossing rollers, the gutter cover is relatively flat and it is necessary to form the transition edge of the gutter cover. A
second preformer 190 is shown inFIG. 8 and forms the angled section 8 and what will become therounded transition 6. Again thepreformer 190 is water cooled and theproduct defining slot 192 is slightly oversized relative to the gutter cover. This is important as theembossed surface 19 is to be maintained. - In
FIG. 9 , thecalibrator 200 is shown which is used to impart the final shape and dimensions to the product. Thecalibrator 200 includes a vacuum arrangement engaging the lower surface of the gutter cover but the top surface is not subject to a vacuum which would provide more accuracy with respect to the gutter cover. Such a top vacuum would draw thesurface 19 into engagement with acalibrator 200 and seriously reduce the embossedsurface 19 provided on the upper surface of the gutter cover. -
FIG. 10 shows a section through the calibrator with a series ofvacuum ports 210 provided on the lower surface of the calibrator while the top surface of the gutter cover is not subject to a vacuum. Thecalibrator 200 connects to and forms part of thecooling tank 230 having awater level 232 slightly above the upper surface of the gutter cover. Some leakage of water along the upper surface of the gutter cover is shown as 234, however, the movement of the gutter cover through the calibrator avoids any water on the upper surface at the inlet to the calibrator. The gutter cutter is discharged to the tank below the water level and the product is finally cooled. The final shaping does impart a hingedline 240 which allows bending of the cover adjacent a roof side edge necessary to form a transition between the angled roof and a more flat surface of the gutter cover used to slow the water. -
FIG. 11 shows the final shape of the gutter cover with the exception that thetrapezoidal ports 15 have not been formed in the cover. At the base of the undercut angled section 8, apunch 300 can enter through thegap 302 to effect the formation of the ports provided at the base of the angled section 8. Thegap 302 tapers inwardly but has a sufficiently large mouth to allow thepunch 302 to enter the gap and effect the formation of the ports. Typically, two punches are used at a time for forming two ports with the gutter cover progressively moving through a punching station. Preferably, one of these punches is not operated at a position where the gutter cover is to be cut. Typically, the gutter cover is provided in a certain length, such as three or four feet, and at a cut position, one of thetrapezoidal ports 14 is not punched and this provides an end section to each of the two gutter cover pieces. - As outlined above, a significant problem encountered in manufacturing this product is effecting heat removal in a controlled manner to reduce or eliminate distortion. The embossing rollers remove a large amount of heat while the clip area remains at a higher temperature. Additional cooling air is directed to the clip portion which is not in contact with the embossing rollers. The process reduces the temperature differential across the width of the gutter cover to avoid warpage.
- The gutter cover is progressively altered in shape by first and second performers that are water cooled. As can be appreciated, once the textured surface has been applied to the gutter cover any precise sizing of the gutter cover downstream of the embosser, such as common in double sided vacuum arrangements, would remove this desired textured surface. In the final forming shape carried out at the
calibrator 200, the calibrator is associated with awater tank 230 and there is some water weepage along the calibrator to provide the necessary seal for vacuum forming. A vacuum source is provided at the bottom of the die, however, the top surface does not have vacuum ports supplied thereto in order to maintain the textured surface. Thus, the water in thetank 230 is above the surface of the gutter cover. The water level in the tank is adjusted to maintain the seal of the final calibrator with the gutter cover while avoiding water flow through the die. The water on the upper surface of the gutter cover in the die effectively provides the vacuum seal. In this way, the part can be sized and shaped to its final shape and shown in the drawings while maintaining the textured upper surface. - The final part after leaving the final sizing die is passed through a water bath and effectively cooled. The gutter cover then continues to be punched and cut in a cutting and punch station. Typically, two perforations are cut at the same time and thus, a gutter cover of a length of 1.8 inch increments has a series of punching steps as it moves through the device. Two punches are used at a cut transition, one of the punches does not strike. This provides a solid section and this solid section is then cut to provide a strong end portion.
- As can be appreciated, the present method extrudes a generally semi circular type product with a resilient clip at one end thereof. This product is then partially straightened and embossed on a substantial portion of the width of the product as part of the manufacturing process. The angled section is then imparted to the product with the clip at an exposed end thereof. Subsequent steps are taken to effect final forming of the product through a die in a manner to impart a reversed transition of the angled section while defining a progressively opening gap in an undercut portion. This progressively opening portion is located below the rounded transition and is necessary to allow effective punching of the gutter cover to form the perforated pass through section. The punches used to form the perforated section are of a trapezoidal shape with these trapezoidal shapes partially overlapping to form angled bridging sections. These angled bridging sections are maintained to a minimum and are disposed at alternate angles whereby water flow around the rounded transition will encounter a perforation.
- It has been found that the particular gutter cover works effectively and can be manufactured in a cost effective manner.
- The formation of the spring clip and the large cavity between the upper and lower arms is possible due to effective heat removal immediate downstream of the extrusion die. Heat is typically removed from this clipped portion by means of the initial copper pipe as well as the direction of air to this section. The heat from the remaining portion of the gutter cover is removed by contact with the embossing rollers and contact with the various performers, all of which are water cooled.
- In the discussion of the angled walls of the perforated section, the angled walls improve the amount of water entering the trough. These
angled walls 17 also have the purpose of acting as a brace or support edge for the front clip and serve to connect the front clip to the remaining portion of the cover. This bracing serves to provide sufficient strength to maintain the shape of the cover and avoid sagging between eavestrough hooks which may be present or effective support between the front edge of the eavestrough and where the cover is supported beneath the shingles. As can be appreciated, the bracing strength is balanced against the ability of the system to direct water into the eavestrough. - Although various preferred embodiments of the present invention have been described herein in detail, it will be appreciated by those skilled in the art, that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/477,362 US20080000169A1 (en) | 2006-06-30 | 2006-06-30 | Gutter cover |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/477,362 US20080000169A1 (en) | 2006-06-30 | 2006-06-30 | Gutter cover |
Publications (1)
Publication Number | Publication Date |
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US20080000169A1 true US20080000169A1 (en) | 2008-01-03 |
Family
ID=38875179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/477,362 Abandoned US20080000169A1 (en) | 2006-06-30 | 2006-06-30 | Gutter cover |
Country Status (1)
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US (1) | US20080000169A1 (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070119104A1 (en) * | 2005-09-23 | 2007-05-31 | Walter Pijanowski | Covered rain gutter system |
US20080120920A1 (en) * | 2006-11-29 | 2008-05-29 | Knudson Gary A | Integrated Debris-Shielding Cover, Flashing & Mounting System For Rain Gutter |
US20090025303A1 (en) * | 2007-10-30 | 2009-01-29 | Gramling Karl J | Gutter Retaining System |
US20090288349A1 (en) * | 2008-05-20 | 2009-11-26 | Thomas A. Wootton | Debris Deflection Devices |
US20090320381A1 (en) * | 2008-06-27 | 2009-12-31 | Grater Gutter Guard LLC | Gutter guard |
USD615632S1 (en) | 2009-09-15 | 2010-05-11 | Thomas A. Wootton | Rain gutter cover |
USD621481S1 (en) | 2009-09-15 | 2010-08-10 | Wootton Thomas A | Rain gutter cover |
USD621484S1 (en) | 2009-09-15 | 2010-08-10 | Wootton Thomas A | Rain gutter cover |
US20100251626A1 (en) * | 2009-04-03 | 2010-10-07 | Roque Alonso Ramon R | Gutter system and associated methods |
US20110126477A1 (en) * | 2009-11-25 | 2011-06-02 | All Clear Gutters, Llc. | Roof gutter system with removable cover |
GB2488434A (en) * | 2011-02-24 | 2012-08-29 | Thomas Haas | Gutter debris guard to protect from accumulation of debris in a gutter |
US20130145699A1 (en) * | 2011-12-08 | 2013-06-13 | John R. Olthoff | Gutter protector |
US20180216348A1 (en) * | 2017-01-31 | 2018-08-02 | Products Innovation Group, Inc. | Gutter cover support bracket |
US10538921B2 (en) * | 2016-11-08 | 2020-01-21 | Stéphane Brochu | Rain gutter cover and rain gutter including same |
US20200095771A1 (en) * | 2018-09-21 | 2020-03-26 | Brock Dressel | Gutter cover system |
US11566428B2 (en) | 2019-05-01 | 2023-01-31 | Gutterglove, Inc. | Gutter guard with girder |
US20230235561A1 (en) * | 2021-07-23 | 2023-07-27 | Unclutter Gutter, LLP | Debris ejector for gutter systems |
US11713580B2 (en) | 2019-05-01 | 2023-08-01 | Gutterglove, Inc. | Single piece gutter guard with girder |
US11732480B2 (en) | 2019-07-01 | 2023-08-22 | Gutterglove, Inc. | Stepped gutter guard |
US11739530B2 (en) | 2009-09-04 | 2023-08-29 | Gutterglove, Inc. | Corrugated mesh gutter leaf preclusion system |
US11788296B2 (en) | 2011-09-21 | 2023-10-17 | Gutterglove, Inc. | Raised arc rain gutter debris preclusion device |
US11898353B2 (en) | 2019-05-01 | 2024-02-13 | Gutterglove, Inc. | Gutter guard with irregular grooves |
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US20070119104A1 (en) * | 2005-09-23 | 2007-05-31 | Walter Pijanowski | Covered rain gutter system |
US20080120920A1 (en) * | 2006-11-29 | 2008-05-29 | Knudson Gary A | Integrated Debris-Shielding Cover, Flashing & Mounting System For Rain Gutter |
US7730672B2 (en) * | 2006-11-29 | 2010-06-08 | Knudson Gary A | Integrated debris-shielding cover, flashing & mounting system for rain gutter |
US20090025303A1 (en) * | 2007-10-30 | 2009-01-29 | Gramling Karl J | Gutter Retaining System |
US7891143B2 (en) * | 2007-10-30 | 2011-02-22 | Gramling Karl J | Gutter retaining system |
US20090288349A1 (en) * | 2008-05-20 | 2009-11-26 | Thomas A. Wootton | Debris Deflection Devices |
US8069617B2 (en) | 2008-05-20 | 2011-12-06 | Wootton Thomas A | Debris deflection devices |
US8037641B2 (en) * | 2008-06-27 | 2011-10-18 | Grater Gutter Guard LLC | Gutter guard |
US20090320381A1 (en) * | 2008-06-27 | 2009-12-31 | Grater Gutter Guard LLC | Gutter guard |
US8176687B2 (en) * | 2009-04-03 | 2012-05-15 | Roque Alonso Ramon R | Gutter system and associated methods |
US20100251626A1 (en) * | 2009-04-03 | 2010-10-07 | Roque Alonso Ramon R | Gutter system and associated methods |
US11739530B2 (en) | 2009-09-04 | 2023-08-29 | Gutterglove, Inc. | Corrugated mesh gutter leaf preclusion system |
USD621481S1 (en) | 2009-09-15 | 2010-08-10 | Wootton Thomas A | Rain gutter cover |
USD615632S1 (en) | 2009-09-15 | 2010-05-11 | Thomas A. Wootton | Rain gutter cover |
USD621484S1 (en) | 2009-09-15 | 2010-08-10 | Wootton Thomas A | Rain gutter cover |
US20110126477A1 (en) * | 2009-11-25 | 2011-06-02 | All Clear Gutters, Llc. | Roof gutter system with removable cover |
GB2488434A (en) * | 2011-02-24 | 2012-08-29 | Thomas Haas | Gutter debris guard to protect from accumulation of debris in a gutter |
US11788296B2 (en) | 2011-09-21 | 2023-10-17 | Gutterglove, Inc. | Raised arc rain gutter debris preclusion device |
US20130145699A1 (en) * | 2011-12-08 | 2013-06-13 | John R. Olthoff | Gutter protector |
US10538921B2 (en) * | 2016-11-08 | 2020-01-21 | Stéphane Brochu | Rain gutter cover and rain gutter including same |
US20180216348A1 (en) * | 2017-01-31 | 2018-08-02 | Products Innovation Group, Inc. | Gutter cover support bracket |
US20200095771A1 (en) * | 2018-09-21 | 2020-03-26 | Brock Dressel | Gutter cover system |
US10900234B2 (en) * | 2018-09-21 | 2021-01-26 | Brock Dressel | Gutter cover system |
US11713580B2 (en) | 2019-05-01 | 2023-08-01 | Gutterglove, Inc. | Single piece gutter guard with girder |
US11566428B2 (en) | 2019-05-01 | 2023-01-31 | Gutterglove, Inc. | Gutter guard with girder |
US11898353B2 (en) | 2019-05-01 | 2024-02-13 | Gutterglove, Inc. | Gutter guard with irregular grooves |
US11732480B2 (en) | 2019-07-01 | 2023-08-22 | Gutterglove, Inc. | Stepped gutter guard |
US20230235561A1 (en) * | 2021-07-23 | 2023-07-27 | Unclutter Gutter, LLP | Debris ejector for gutter systems |
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