This document relates to devices and methods for holding and positioning fasteners on a surface.
Historically tools such as screwdrivers, hammers and drills are generally used to drive a fastener such as a screw or nail into a surface of choice. When using a screw, the user must hold the screw between the thumb and a finger of one hand while positioning the driver or drill with the other hand. The screw is then driven into the surface while being held with the fingers until the screw is latched or seated at the surface intended, only then the user can remove the fingers from the screw or the nail to fully drive the screw or the nail into the area of choice. The thumb and finger are in effect a means to guide the screw or the nail and are at all times at risk of being injured during the process. Methodologies to mitigate finger injuries can broadly be classified into the following categories, (1) do it yourself solutions, (2) protective gloves, (3) push hammer, (4) magnetic nail holder in hammer, (5) magnetic screw holder on electric screwdriver and (6) magnetic drive guide.
Under the do it yourself solution, one may use anything that could be found in a household that would help protect hands. Protective groves are flexible gloves that provide protection around the thumb and index finger. Push hammers are devices with a hollow shaft and a small magnet extended into a handle. The nail is then placed in the shaft and the magnet connects to the head of the nail allowing the user to push against the handle and force the nail in. A magnetic nail holder in hammer is a slot in the head of the hammer that has a small magnet to hold the nail prior to striking the surface of choice. Magnetic screw holders and driver guides are essentially the similar concepts to hold the screw or nail on the drivers.
Typically, these approaches are still less than ideal. For example, when the screws are relatively shorter than an inch, not only the handling of the tools and the screw would be more challenging but also there is a higher risk of injury to the users. Further, users with history of impaired finger movement or patient suffering from arthritic joints would have much difficulty to employ such technique, thereby exposing themselves to much higher risk of injury such as striking one's thumb, not to mention ineffective positioning of the screw or nails. Accordingly, there is a need to make the installation of fasteners easier.
The document presently describes a fastener holder, such as a screw or nail holder, for assisting a user to drive a nail or a screw into a surface of choice. The device may include (a) a base having a top and bottom side and an outer edge, (b) a hollow stem having an outside and inside wall, a first opening end and second opening end, where the first opening end is attached to and extends from the top side of the base and the second opening end is designed for receiving a fastener, and where the inside wall forms a through passage for receiving the fastener, (c) a supporting member inside the through passage of the stem and used to receive and maintain orientation of the fastener while the fastener is being driven into a surface.
In at least one embodiment, the device has an adhesive layer affixed on one side to the bottom of the base while the opposite side of the adhesive layer has adhesive properties and can be used to adhere the fastener holder in place onto a surface. Alternatively and/or additionally, the supporting member has one or more grooves, multiple fins or multiple elastic clips that are designed to receive the screw and further guide the movement of the screw through the passage. In one embodiment, the supporting member is only available in the stem.
In one embodiment, the through passage may be in any suitable shape, for example, circular or rectangular. Alternatively and/or additionally, the through passage may extend through the base. In another embodiment, the supporting member may also extend from inside the through passage to the base. The supporting member inside the through passage may also contain axial slits and further extends longitudinally to the base, providing flexibility in expanding that allows a fastener to move into the passage space or facilitate receiving of various sizes of fasteners.
In one embodiment, a method is provided for guiding a fastener including the steps of inserting a fastener into a fastener holder, placing the bottom side of the base of the fastener holder against a surface of a work piece or a substrate, driving the fastener into the substrate and removing the fastener holder from the surface. Alternatively and/or additionally, the method also includes selecting a polymer foam fastener guide having one or more openings wherein each opening is adapted for inserting the fastener. In one embodiment, the fastener can be a screw. In another embodiment, the fastener can be a nail. The work piece or substrate can be wood, sheetrock, concrete, vinyl or other materials.
In one embodiment, a method for guiding a nail may include selecting a plastic nail holder having an opening adapted for inserting a nail and a straight stem perpendicularly standing on a base structure allowing for insertion of a nail into the opening, positioning the nail holder on a desired surface of a substrate, adhering the nail holder to a surface of choice by an adhesive layer affixed to the base, seating or suspending the nail holder on the surface of choice and driving the nail into the substrate, and removing the nail holder from the surface of the substrate. In another embodiment, the fastener can also be a screw or other types of fastener.
In one embodiment, a fastener kit may include a fastener holder and one or more fasteners. Additionally, the fastener holder may include one or more adhesive layer or pad for affixing to the bottom of the base and temporarily adhering the fastener holder to the surface of the substrate to prevent the fastened holder from moving when the fastener is being driven into the substrate. In one embodiment, the fasteners in the fastener kit may include one or more screws or nails, and/or a driving rod. Alternatively and/or additionally, the fastener kit may also include a hammer and/or screwdriver.
This disclosure is not limited to particular systems, methodologies or protocols described, as these may vary. The terminology used in this description is for the purpose of describing the particular versions or embodiments only, and is not intended to limit the scope.
As used in this document, any word in singular form, along with the singular forms “a,” “an” and “the,” include the plural reference unless the context clearly dictates otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art. All publications mentioned in this document are incorporated by reference. Nothing in this document is to be construed as an admission that the embodiments described in this document are not entitled to antedate such disclosure by virtue of prior invention. As used herein, the term “comprising” means “including, but not limited to.”
The term “fastener” refers to a device that attaches or joins two pieces of items together by mechanically penetrating into both pieces and stay therein. A fastener may also refer to a device that mechanically penetrates into one substrate or work piece to be stayed therein permanently or temporarily. Examples of fasteners include a screw, a nail, a device combining the functionalities of a screw and a nail, a pin, a rod, a staple, a brad, a tack or other devices. A fastener may be made of any rigid or semi-rigid materials, such as metal, plastic, polymeric resin, nylon, vinyl or wood. Whereas various embodiments in this document may show a nail or a screw as an example, the teachings thereof may also be applicable generally to other types of fasteners.
The term “nail” refers to any spike that includes a body or shank and a point on one end. It may have a broadened flat head on the other end or a head in other form, where the head is to receive a hammering action in order for the nail to be driven into a substrate. A nail may have a smooth round shank or a shank that can be twisted, threaded or ringed. Also, the cross section of a nail's shank may be of other shapes, such as round, triangular, square or rectangular. The shank may contain or be coated with a suitable lubricant, a wax or a soap to facilitate a smooth passage or penetration into a substrate. A nail may be made of metal, plastic, polymeric resin, or wood. Examples of nails may include: common nails, box nails, anchor nails, screw nails, easing nails, ringed shank nails, brads, finishing nails, tacks and upholstery nails.
The term “screw” refers a nail-shaped fastener with one or more threads or spiral grooves around the shank and a slotted or recessed head designed to be inserted into a substrate material by rotating.
With reference to
In one embodiment, the size of the base 15 can be modified so that it fits any surface area while stabilizing the stem 12. Alternatively and/or additionally, the base 15 may be of various shapes, such as round, square, rectangular, triangle and oval, etc., to fit different applications and/or accommodate ease of manufacturing the same. Likewise, the stem 12 and the through passage 16 may be of various shapes such as round, square, rectangular, triangle and oval, etc. The length of the stem 12 may vary as well to suit different sizes of the fastener.
In one embodiment, the fastener holder may further comprise an adhesive layer 17, with one side being affixed to at least a portion of the bottom side of the base 19, and the opposite side of the adhesive layer having adhesive properties (adhesive side) for adhering the fastener holder in place to the surface of a substrate or work piece in which the fastener is to be driven. In one embodiment, the adhesive layer may be covered with a protective cover sheet to minimize undesirable stickiness while not in use. The protective cover sheet can be easily removed or peeled prior to using the fastener holder. The substrate structure in which the fastener is to be driven may be of wood, metal, natural rocks, sheetrock, cement and the like, where inserting a nail or screw is practical and desired.
Alternatively and/or additionally, the stem 12 may contain a lubricant or soap inside the through passage. For example, the lubricant or soap may be placed within the base or at least a section of the through passage inside the stem to facilitate ease of passage of the fastener through the stem and the base. Alternatively and/or additionally, the lubricant or soap may be placed on the shank section of the nails.
With reference to
With reference to
Additionally, an adhesive layer or an adhesive pad 37 can be affixed to the bottom side of the base 36. The adhesive layer or pad can be optionally covered by a protective sheet or paper/film to minimize the risk of unintended adhesion to undesirable surfaces when not in use. When in use, the protective sheet can be removed and the adhesive layer or pad can be used to adhere the screw holder in place against the substrate or work piece, in which the screw is to be driven. Once the screw is secured inside the substrate, the screw holder can be removed by the user or left in place until the screw is driven all the way into the substrate. The through passage 33 may extend through the base structure and optionally through the adhesive to facilitate proper reach to the substrate or work piece.
The screw holder may be of various sizes to accommodate various types of screws or fasteners. According to one embodiment, the distance between the top and bottom sides of the base may range from ⅛ to ½ inch, and preferably ¼ inch. The length of the stem 34, measured from the top of the stem wall to the top side of the base 32, and can range from ¼ to 2 inches, preferably between ½ to about ¾ of an inch. The opening insertion point 38 positioned on top of the stem can assume different shapes such as circle, square or triangle, so long as it allows insertion of a suitable size screw or nail through the stem and through passage inside the stem.
In one embodiment, the thickness of the base 35 can be in the range between about ⅛ inch to about 1 inch, and preferably between about ¼ inch and about ⅜ of an inch. In another embodiment, the thickness of the base 35 can range between about ¼ inch to about 1 inch, and preferably range between about ¼ and about ¾ of an inch.
With further reference to
Various alternative embodiments are now further described. With reference to
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The supporting member can be of various configurations. In one embodiment, the multiple clips can be made of the same material as the stem wall and formed as the stem wall is wrapped around inside at its top 98. In one embodiment, the stem can be of rigid with higher density materials while the clips (formed inside the stem) can be of lower density materials, making it possess elastic property that allows the head of a screw or nail to “squeeze” and pass through the center. In another embodiment, the clips may be made of separate pieces from the stem and attached to the inside wall of the stem. The clips can be of various designs to accommodate different types of fasteners and different sizes of fasteners. For example, each of the inner sides of the clips towards the center 88 can be flat surface allowing a nail to pass through easily. In another example, each of the inner sides of the clips 88 can have multiple grooves to accommodate the passage of a screw. In another example, inner sides of the clips 88 can have flat surface yet can be made soft enough such that when a metal screw passes through the clips, the sharp edges of the threads of the screw will operatively touch the inner sides of the clips 88 and form groves on the inner sides while the screw is turning. The new formed grooves in turn will facilitate guiding the screw through the passage of the stem and the base to the surface of the substrate.
In one embodiment, the top of the clips 89 can be lower than the top of the stem 98 to allow the fastener to further sink into the stem. The top of the clips 89 can also be of different configurations. For example, the top of the clips 89 can be angled downward from the stem wall 81 towards the center of the passage 85. When the head of a screw is at a larger diameter than that of the body of the screw, this angled top of the clip allows the head to be “squeezed” easily into the passage towards the base and to reach the surface of the substrate/work piece.
In one embodiment, the fastener holder device provides a nail or screw holder having a base for which the area of the bottom or top side ranges from ⅛ to 3 square inches, preferably in the ranges between ¼ to 1¾ square inches, and a height dimension ranging from ⅛ to 1½ inches, preferably in the ranges of ⅛ to 1 inches. In one embodiment, the fastener holder has a base with the area of ¾ square inches and a height of 1 inch. In another embodiment, the cross-section area of the through passage covers ⅓ to ⅔ of the surface area of top or bottom of the base.
In one embodiment, the fastener holder is a screw holder device having an adhesive layer affixed to the bottom side of the base. The thickness of such adhesive layer may be in the range between 1/48 to about ¼ of an inch. In a preferred embodiment, the adhesive layer has a thickness ranging from 1/32 to about ⅛ of an inch. In one embodiment, the adhesive layer is of material that provides temporary adhesion to the surface of interest, yet, is capable of being removed. In at least one embodiment, the adhesive layer provides adhesion of the fastener holder device for at least 1, 5, 8, 10 or 20 minutes or more.
Various embodiments of the fastener holder described in this document will address the problem of requiring a hand to hold a fastener while inserting or rotating the fastener to be placed in its desired position. In one embodiment, a method for driving a fastener to a substrate or work piece using the fastener holder disclosed in this document may include (a) placing a fastener into a fastener holder, (b) placing the bottom side of the base against a surface of the substrate, (c) driving the fastener at least partially into the substrate, and (d) removing the fastener holder from the surface of the substrate. In one embodiment, the substrate or work piece may be a wall or furniture or any suitable surface that requires insertion of a nail therein.
Additionally, if the fastener holder has an adhesive layer or pad affixed to the bottom of the base and with a protective cover, the method of placing the bottom side of the base against the surface of the substrate may further include peeling off the protective cover from the adhesive layer and adhering the adhesive layer or pad against the surface of the substrate. With the adhesive layer, the fastener holder can stay on the surface of the substrate or work piece temporarily, freeing a user's hand from having to hold the fastener while the user operates a screwdriver. Alternatively, with or without the adhesive layer, the user can still maintain the fastener in proper position by holding the fastener holder instead the fastener while the fastener is being driven with another hand. This provides a safer environment because the user does not need to directly hold a screw or nail with fingers but a screw or nail holder instead. In another embodiment, with a nail holder, a user can use a hammer to drive a nail into the surface of choice without a need for a hand support. In another embodiment, the holder can be removed once the nail or screw is securely fastened at the surface of choice.
In still another embodiment, a method is provided for guiding a nail wherein the method includes selecting a polymer foam nail holder having an opening adapted for inserting a nail and a straight through passage perpendicularly positioned on a base, exposing the adhesive layer side of the base by removing the protective sheet and adhering the holder on a surface of the area, wherein the holder either sits or stays suspended from the surface area of choice, inserting a nail into the insertion point opening, positioning the hammer or a driver on the head of the nail driving it at least partially into a work piece, and removing or detaching the nail holder from the work piece.
In hammering a nail into the wall with a nail holder described in this document, a nail may not be able to go into the substrate or work piece all the way in so that the head of the nail can flush with the surface of the substrate. This is because the stem has a height that prevents a user from continuing to hammer once the head of the nail reaches to the top of the stem. According to one embodiment, the nail holder may come with an extension pin or rod that user can place on the head of the nail and hammer the driving rod in order to drive the nail into the substrate.
Various embodiments in this document are provided with one or more adhesive layers on the foam bodies to provide additional benefits. Different types of adhesives can be used, but adhesives which are known as “pressure sensitive adhesives” (PSA) are preferred. PSA are adhesives which remain somewhat tacky and which provide relatively low bond strength between the adhesive and smooth rigid substrates thus resulting in an adhesive which has an easily removable, temporary bond with such substrates. The exposed PSA layer needs to be covered with a protective sheet in order to prevent unwanted adhesion when the PSA layer makes unintentional contact with a substrate. Suitable compounds for obtaining a non-adherent, release coating on sheet materials are described in U.S. Pat. No. 3,900,617 (Grenoble, 1975), and herein incorporated by reference in its entirety.
Several techniques are available for applying a PSA layer to a surface. For example, adhesive tapes, which include PSA layers bonded to both sides of a carrier may be suitable as the adhesive layer for the fastener holder. Such tapes are commercially available and these are commonly referred to as double sided adhesive tapes. The exposed surface of PSA layer is covered with release sheet.
In a more preferred embodiment the adhesives are designed to stay adhered to the work piece surface for a specific period of time. Such period of time may range from 30 seconds to 20 minutes, preferably 1, 5, 8, 10 or 15 minutes. The duration of adhesion and the strength of adhesiveness is a function of the thickness of the adhesive layer, the weight of the fastener holder and the employed polymeric material.
The embodiments of the present invention wherein one or more adhesive layers are employed are illustrated herein with adhesive layers, which cover the entire area of the bottom side of the base. However, it may be equally operable when the adhesive layer does not cover the entire area of the bottom side of the base but instead at least a portion of it.
While the invention has been illustrated with foam bodies having one or two openings, the invention is equally operable with foam bodies having multiple openings. The above embodiments of the present invention are illustrated using flexible polymer foam bodies having an approximately rectangular shape. The invention is equally operable when the foam body has a non-rectangular shape, such as, for example an oval or circular shape. The length and width of the foam bodies is not critical. A preferred length range is from about 1¼ inch to about 3½ inch. A preferred width range is from about ¾ inch to about 1¾ inch.
Various materials can be used to the making of the fastener holder. In one embodiment, a nail or the screw holder according to various embodiments is of soft, monolithic, plastic material having an outer rigid structure, while being less rigid internally. In one preferred embodiment, the holder of the present invention is of polymeric foam. In another embodiment, the density of the polymeric foam lowers from outside to inside.
The term polymer foam as defined herein includes two-phase, gas-solid systems having a solid continuous phase comprising one or more plastic or elastomer polymers. Polymer foams are generally characterized as either flexible or rigid. Polymer foams, which are suitable for the nail guides of the present invention, are flexible and require sufficient flexibility to allow bending at room temperature around without causing substantial cracking of the foam.
Polymer foams are produced in a wide range of densities. Polymer foams suitable for nail holder of the present invention have a density ranging from about 0.5 pounds per cubic foot (pcf) to about 10 pcf. A preferred density range is from about 1.0 pcf to about 7 pcf. In yet another preferred embodiment, the density range is from 1.5 pcf to 4 pcf. An example of preferred foams for use in the present invention is closed cell flexible polyethylene foam having a density of 0.5-3 pcf.
Examples of plastic and elastomer polymers suitable for use in the nail holder of the present invention include ethylene-vinylacetate copolymer, natural rubber, polychloroprene, polyethylene, polyisoprene, polyolefin, polypropylene, polyurethane, polyvinyl acetate, polyvinyl chloride and styrene-butadiene copolymer.
According to one embodiment, a fastener kit may include a fastener holder as disclosed above. The kit may also include one or more fasteners that can be accommodated by the fastener holder, such as nails and screws. The kid may also include a hammer or a driver customized for passage through the fastener holder disclosed in this document. In at least one embodiment, a hammer or other impact tool is used to strike the head of the nail until the nail is seated in the work piece such that the nail no longer needs to be held or guided. The nail holder is then removed before fully driving the nail into the work piece.
In another embodiment, the fastener kit can include a driving rod that is designed to aid the driving of a nail. It is to be placed against the head of the nail and goes through the passage of the stem. A user will hammer on the driving rod instead of the nail, to drive the nail into the substrate. The driving rod can be of any length and is preferably at a length equal or longer than the height of the stem and base together, thus preventing the hammer from hitting the stem before the head of the nail flushes with the surface of the substrate.
In one embodiment, the nail holder may be removed by pulling the adhesive layer from the surface of the substrate followed by removing the entire structure through the portion of the nail that is still outside the substrate. In another embodiment, the supporting member and stem may be disassembled allowing the nail to remain on the surface area of choice. In another embodiment, the entire fastener holder may be cracked split under a predetermined pressure, facilitating the breakage. In another embodiment, the stem can flexible and foldable to fit different nail sizes. In one embodiment, the release sheet is removed from surfaces, exposing PSA layer.
In at least another embodiment, persons who have disabilities or are limited to the use of only one hand can use the aforementioned teachings to guide and drive a nail into a work piece. The fastener holder disclosed in this document is particularly useful when the surface of the work piece is uneven or non-flat because the foam bodies are easily deformed due to the flexibility and low density of the foam bodies. The flexibility and low density also enable persons with impaired finger to use to hold the nail guide, and be able to effectively guide and drive a nail into a work piece surface. Similarly, these devices provide safety measures for children who use a hammer since the nail guides of the current invention greatly reduce the risk of hitting one's finger or thumb with the hammer.
The above-disclosed features and functions, as well as alternatives, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations or improvements may be made by those skilled in the art, each of which is also intended to be encompassed by the disclosed embodiments.
This application claims priority to U.S. Provisional Application No. 62/134,771, filed Mar. 18, 2015, the disclosure of which is incorporated herein in its entirety.
Filing Document | Filing Date | Country | Kind |
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PCT/US16/23246 | 3/18/2016 | WO | 00 |
Number | Date | Country | |
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62134771 | Mar 2015 | US |