1. Field of the Invention
The present invention relates generally to shutter assemblies.
2. Description of Prior Art and Related Information
Shutter assemblies are often selected as the window treatment of choice for homes. Shutters may also be used to dress a screen door or any other fenestration in a building that includes a glass or window. Plastic shutter assemblies serve as an alternative to conventional wooden shutter assemblies. The cheaper costs, durability and varying options associated with plastic shutter assemblies make such products preferable to wooden shutters for many customers.
While plastic shutters may be cheaper than wooden shutters, plastic shutters according to the prior art do require a plurality of parts for assembly and operation. The visibly higher number of parts creates an overall appearance of a cheaper imitation product and thus imparts a sense of lower quality to the consumer.
Though plastic shutters may be less expensive and longer lasting than wooden shutters, many customers still prefer wooden shutters primarily on the basis of the look and feel of wooden shutters. Plastic shutters in the prior art look and feel, quite simply, plastic due to the visible plurality of components, such as protruding louver and stile end caps, and strips of components clipped together like LEGO® parts. And, many such shutters in the prior art are much lighter than wooden shutters which give these products a cheaper feel. Since it is generally known that wooden shutters are more expensive and thus considered high end, customers naturally prefer that anyone who encounters their plastic shutters would not be able to tell the difference.
Therefore, plastic shutters that more closely resemble wooden shutters in both look and feel, while having reduced costs and complexities, would be highly desirable.
The present invention provides structures and methods which overcome the deficiencies in the prior art.
In one aspect, a shutter assembly is provided. The assembly comprises a stile that defines a longitudinal axis and includes a plastic cover and an inner solid core. The inner core defines an axial groove extending parallel to the longitudinal axis. The axial groove defines a fixed width that is uniform throughout its length. A louver is rotatably coupled to the stile. The louver has a slotted louver pin that is received in the axial groove of the inner core of the stile.
The louver further comprises a louver body with a louver edge, and a louver end cap with an outer louver planar surface. The louver end cap is coupled to the louver body such that the louver planar surface is substantially flush with the louver edge. The louver end cap comprises a closed loop wall and a louver lip that extends radially outward from the closed loop wall. The louver body comprises an inner shoulder configured to support the louver lip such that the louver planar surface is substantially flush with the louver edge.
The stile cover comprises a stile edge. The stile end cap with an outer stile planar surface. The stile end cap is coupled to the stile body such that stile planar surface is substantially flush with the stile edge. The stile end cap comprises a closed loop wall and a stile lip that extends radially outward from the closed loop wall. The stile body comprises an inner shoulder configured to support the stile lip such that the stile planar surface is substantially flush with the stile edge.
The louver pin comprises a pair of arms and a slot defined therebetween. The inner core of the stile is composed of wood. The cover defines a plurality of apertures open to the axial groove
In another aspect, a shutter assembly comprises an end cap and a tubular body. The end cap has a peripheral lip and an outer planar surface. The tubular body has at least one edge and an inner shoulder adjacent to the edge. The inner shoulder is configured to support the lip of the end cap such that the planar surface is substantially flush with the edge. The end cap further comprises a closed loop wall extending oppositely from the outer planar surface. The closed loop wall forms a press fit with an inner surface of the tubular body. The end cap comprises a louver end cap or a stile end cap. The tubular body comprises a louver body or a stile body. The assembly may further comprise a solid core disposed within the tubular body. The solid core may be composed of wood or wood composites.
In a further aspect, a shutter assembly comprises a stile defining a longitudinal axis and including a plastic cover and an inner wood core. The inner wood core defines an axial groove extending parallel to the longitudinal axis. The cover comprises a planar longitudinal section that is spaced apart from the axial groove of the inner wood core. The planar longitudinal section defines at least one aperture open to the axial groove. A louver is rotatably coupled to the stile. The louver has a louver pin received in the axial groove of the inner core of the stile.
The stile comprises a stile body with a stile edge, and a stile end cap that is substantially flush with the stile edge. The louver further comprises a louver body with a louver edge, and a louver end cap that is substantially flush with the louver edge. The louver pin is slotted.
A method of manufacturing a shutter assembly is also provided. The method comprises providing a stile with a plastic cover and a wood core having an axial groove, providing a louver with a slotted louver pin, and coupling the louver to the stile by inserting the slotted louver pin into the axial groove of the wood core.
The method further comprises covering an end of the wood core with a stile end cap that is substantially flush with an edge of the plastic cover. The step of providing the louver with the louver pin comprises providing a louver edge and a louver end cap that is substantially flush with the louver edge. The method further comprises forming an aperture in the plastic cover that is open to the axial groove.
In summary, a shutter assembly includes a stile having a solid core and a plastic outer cover. Holes are formed in the plastic outer cover and aligned with an axial groove formed in the solid core to receive a slotted louver pin. The louver pin includes a pair of arms that provide a sufficient compression fit in the axial groove of the stile while enabling each louver to rotate freely. Separate stile end caps are formed to be substantially flush with the edges of the ends of the plastic cover. Each louver includes louver edges and opposite end caps which are substantially flush with the louver edges. A method of manufacturing a shutter assembly is also provided.
The invention, now having been briefly summarized, may be better appreciated by the following detailed description.
The invention and its various embodiments can now be better understood by turning to the following detailed description wherein illustrated embodiments are described. It is to be expressly understood that the illustrated embodiments are set forth as examples and not by way of limitations on the invention as ultimately defined in the claims.
In
The outer cover 24 is preferably preformed separately from the core 22, and is preferably composed of a plastic material, such polyvinyl chloride (PVC) or unplasticized polyvinyl chloride (UPVC). Since the outer cover 24 is configured to cover the elongate stile core 20, the outer cover 24 is also elongate and generally shaped as a tube. The outer cover 24 is preferably composed of a material that can be extruded in the manufacturing process.
Of particular interest, the stile 20 comprises an axial, or longitudinal, groove 28 adapted to receive a louver end pin according to the invention. The groove 28 is defined along a side of the stile core 22 and extends parallel to the longitudinal axis 26. The groove 28 is shaped to receive a preferred slotted louver pin as shown in
In
In
It will be appreciated that a secure fit is accomplished with minimal complexity. In particular, a sufficiently tight compression fit is accomplished with an axial groove 28 having a fixed width W throughout its length that receives a slightly larger, but compressible louver pin 35. The slot 39 between the arms 37 thus makes the louver pin 35 compressible, or resilient, namely, that the arms 37 may be compressed toward each other in order to maintain a compression fit when the louver pin 35 is inserted into the narrower groove 28. This accomplishes the tightness, or tensioning, desired between a louver and a stile so that the louver may rotate freely, but not loosely, with respect to the stile. An even tighter fit may be accomplished by slightly flaring out the arms 37 so as to define a larger cross-dimension D in the rest state such that greater compression results when the louver pin 35 is inserted into the groove 28.
It will further be appreciated that forming the louver pin 35 with a slot is one preferred embodiment of making the louver pin 35 expandable and compressible in order to form a tight fit with a groove of fixed width. A variety of other mechanisms may be utilized to make the louver pin 35 springy or compressible, including, but not limited to: forming the pin 35 out of a compressible, cushion-type material; employing various spring-like designs, such as radially expandable louver pins, etc.
The ease of manufacturing and assembly will be appreciated with the louver pin according to the invention. By employing a combination of a slotted pin 35 in the louver 33 and an axial groove 28 in the stile 20, a plurality of complex intermediate mechanisms associated with the prior art may be avoided.
In
To facilitate a tight fit between the louver end cap 42 and the louver body 44, the louver end cap 42 includes a closed loop wall 54 that forms a tight press fit with an inner surface 56 of the louver body 44 that is medial to the shoulder 48 as shown in
In the preferred embodiment, the louver 33 comprises a pair of louver end caps 42 on opposite ends, each end cap 42 including an associated slotted louver pin 35 such that the louver 33 is coupled to a first stile on one side and a second stile on an opposite side. Accordingly, the louver body 44 preferably includes a pair of shoulders 48, one located medially with respect to each louver edge 46. It is to be expressly understood that a shutter assembly according to the invention would also comprise top and bottom frames. Such structures have been omitted from view in the Figures to better illustrate the novel features according to the invention.
In an alternative embodiment illustrated in
The preferred stile 20 according to the invention is configured to appear and feel as if it was a single integral piece entirely composed of expensive wood. The feel of wood is accomplished with the wooden inner core 22 as discussed above and shown in
In
By making the stile end cap 60 flush with the stile edges 62, it will be appreciated that lines or seams are less visible from a front view, thereby avoiding the appearance of a multiplicity of parts. This ultimately gives the impression of an integral structure suggesting that the stile 20 is entirely composed of expensive wood.
To facilitate a tight fit between the stile end cap 60 and the cover 24, the stile end cap 60 includes a closed loop wall 70 that forms a tight press fit with an inner surface 72 of the stile cover 24 that is medial to the shoulder 64 as shown in
Not only does the stile 20 according to the invention provide the look and feel of a more expensive all wood shutter, it will be further appreciated that the stile 20 is universal in a manner that purely wood stiles are not. In particular, the stile 20 according to the invention may be employed in all types of shutter assemblies of varying dimensions. As shown in
Accordingly, the universal stile 20 may accommodate, for example, 2-inch louvers, which would require a greater number of more closely spaced apertures in the cover 24, or four (4)-inch louvers which would require a fewer number of more distantly spaced apart apertures in the cover 24. Thus, the universal stile 20 according to the invention may accommodate any number of louvers in any manner of spacing.
If a taller shutter assembly is desired, the stile 20 may simply be formed with a greater length in order to accommodate more louvers. Alternatively, additional stiles 20 may be coupled end to end to form a longer overall stile subassembly. In any event, however, the specific structures of the core 22, particularly the axial groove 28, and the cover 24 need not be modified.
In the preferred embodiment, the plastic cover 24 of the stile 20, the stile end cap 60, the louver end cap 42 and the louver main body 44 may all be composed of a common plastic material or of different materials. As an example and not by way of limitation, this material may comprise plastic vinyl chloride (PVC) and/or nylon.
As shown more clearly in the close-up view in
In this embodiment, the lip 51a, 66a protrudes radially outwardly from a closed loop wall 54a, 70a at a distance long enough to form a stop that abuts the edge 46a, 62a of the tubular wall 24a, 44a in order to prevent the cap 42a, 60a from being completely lodged therein. The lip 51a, 66a, however, extends a distance short of the outer surface 74 of the stile/louver cover 24a, 44a. Thus, the outer periphery of the lip 51a, 66a is inwardly offset by a distance “O.” This inward offset “O” helps to conceal break lines from view in order to give the appearance that the entire stile or louver is composed of wood.
This inward offset “O” is preferably 50% to 95% of the thickness of the tubular wall. Plastic tubular walls generally have thickness in the range of 0.045 to 0.200 inches. Thus, as examples and not by way of limitation, the offset “O” can be as little as 0.023 inches to as much as 0.190 inches from the outer surface 74 of the tubular wall 24a, 44a.
The closed loop wall 54a, 70a extends oppositely from an outward facing planar surface 53a, 68a. The closed loop wall 54a, 70a forms a tight press fit with the inner surface 56a, 72a of the tubular body 24a, 44a so that the end cap 42, 60 would not be easily dislodged from the tubular body 24a, 44a, which commonly occurs with plastic shutter assemblies in the prior art.
In
Step 160 comprises coupling the louver to stile by inserting the compressible louver pin into the axial groove of the wood core. This step 160 involves forming a tight compression fit between the slotted louver pin and the axial groove of fixed width, while still enabling the louver to rotate freely with respect to the stile.
The method further comprises the step 170 of covering an end of the stile plastic cover with a stile end cap that is flush with an edge of the stile plastic cover.
Many alterations and modifications may be made by those having ordinary skill in the art without departing from the spirit and scope of the invention. Therefore, it must be understood that the illustrated embodiments have been set forth only for the purposes of examples and that they should not be taken as limiting the invention as defined by the following claims. For example, notwithstanding the fact that the elements of a claim are set forth below in a certain combination, it must be expressly understood that the invention includes other combinations of fewer, more or different elements, which are disclosed in above even when not initially claimed in such combinations.
The words used in this specification to describe the invention and its various embodiments are to be understood not only in the sense of their commonly defined meanings, but to include by special definition in this specification the generic structure, material or acts of which they represent a single species.
The definitions of the words or elements of the following claims are, therefore, defined in this specification to not only include the combination of elements which are literally set forth. In this sense it is therefore contemplated that an equivalent substitution of two or more elements may be made for any one of the elements in the claims below or that a single element may be substituted for two or more elements in a claim. Although elements may be described above as acting in certain combinations and even initially claimed as such, it is to be expressly understood that one or more elements from a claimed combination can in some cases be excised from the combination and that the claimed combination may be directed to a subcombination or variation of a subcombination.
Insubstantial changes from the claimed subject matter as viewed by a person with ordinary skill in the art, now known or later devised, are expressly contemplated as being equivalently within the scope of the claims. Therefore, obvious substitutions now or later known to one with ordinary skill in the art are defined to be within the scope of the defined elements.
The claims are thus to be understood to include what is specifically illustrated and described above, what is conceptionally equivalent, what can be obviously substituted and also what incorporates the essential idea of the invention.
Number | Name | Date | Kind |
---|---|---|---|
535871 | Taylor | Mar 1895 | A |
2926729 | Zanini | Mar 1960 | A |
3110936 | Berard | Nov 1963 | A |
3691687 | Economou | Sep 1972 | A |
4469132 | Redington | Sep 1984 | A |
4481701 | Hewitt | Nov 1984 | A |
4722382 | Vecchiarelli | Feb 1988 | A |
5191735 | Ross | Mar 1993 | A |
5339591 | Underdahl | Aug 1994 | A |
5778598 | Ohanesian | Jul 1998 | A |
5826393 | Wenzlaff et al. | Oct 1998 | A |
5941021 | Valls, Jr. et al. | Aug 1999 | A |
5996672 | Kotin | Dec 1999 | A |
6125906 | Kotin | Oct 2000 | A |
6219985 | Hsu | Apr 2001 | B1 |
6263632 | Cadorette | Jul 2001 | B1 |
6328090 | Anderson et al. | Dec 2001 | B1 |
6357197 | Serino et al. | Mar 2002 | B1 |
6655091 | Iwasaki | Dec 2003 | B1 |
6817141 | Chen | Nov 2004 | B2 |
6854211 | Blachley | Feb 2005 | B1 |
20010037603 | Gabriele | Nov 2001 | A1 |
20010037604 | Gabriele | Nov 2001 | A1 |
20020056231 | Blachley | May 2002 | A1 |
20040025438 | Marocco | Feb 2004 | A1 |
20050005523 | Johnston | Jan 2005 | A1 |
20050045280 | Schlater et al. | Mar 2005 | A1 |
20050102963 | Nien et al. | May 2005 | A1 |
20050103451 | Nien | May 2005 | A1 |
20050126719 | Null | Jun 2005 | A1 |
20060070300 | Gabriele | Apr 2006 | A1 |
Number | Date | Country | |
---|---|---|---|
20070137108 A1 | Jun 2007 | US |