US 20080090506 A1
An abrasive sanding work glove (12) has a fabric (13) with an inner first elastomeric cushion coat (18) and an harder cured coat (21) cured on the palm and finger fronts. Abrasive particles (22) are bonded to the cured coat (21) to provide for a sanding or gripping work tool. A sanding cloth (15) can be handled by the sanding work glove. The sanding cloth has an abrasive side (35) with abrasive particles (30) adhered to the cloth and a back side (36) that engages with the sanding work glove (12).
1. A glove for sanding surfaces comprising:
a knitted glove having a breathable fabric base;
a flexible elastomeric layer on the exterior palm side section of the glove and adhered to the fabric base;
a layer of abrasive particles on said elastomeric layer; and
a connecting layer with a lower coefficient of friction than said flexible elastomeric layer constructed to adhere said layer of abrasive particles onto said flexible elastomeric layer and to cover said flexible elastomeric layer.
2. A glove for sanding surfaces as defined in
said connecting layer bonding the bottom section of said abrasive particles and having thin areas between said abrasive particles to provide a plurality of flexibility point of said connecting layer; and
said connecting layer being substantially harder than said elastomeric layer to provide a secure hold of said abrasive particles to said elastomeric layer.
3. A glove as defined in
a substantial portion of a backside of said glove being free from said flexible elastomeric coating and being breathable.
4. A glove as defined in
a substantial portion of a backside of finger sections of said glove being free from said flexible elastomeric coating and being breathable.
5. A glove as defined in
said elastomeric layer being a soft rubber material; and
said connecting layer being an epoxy material.
6. A glove as defined in
said elastomeric layer being a soft rubber material; and
said connecting layer being a cured urethane material.
7. An abrasive sanding cloth comprising:
a flexible cloth layer; and
abrasive particles secured onto at least one side of said cloth layer;
said abrasive particles bonded to said cloth layer by an adhesive coating which bonds a proximate end of said abrasive particles onto said cloth; and
said adhesive coating having thin areas between said abrasive particles to provide flexibility points to retain flexibility of said cloth layer.
9. An abrasive sanding cloth as defined in
said cloth layer being a woven textile.
10. An abrasive sanding cloth as defined in
said adhesive coating being an epoxy material.
11. An abrasive sanding cloth as defined in
said adhesive coating being a cured urethane material.
12. A hand sanding system comprising:
a sanding cloth having an abrasive side and a back side for handling;
a gripping glove having gripping sections for providing a high coefficient of friction to engage said back side of said sanding cloth and for moving said cloth sideways but easily disengageble in a transverse vertical direction from said back side of said sanding cloth;
said sanding cloth having abrasive particles secured onto said cloth by a hardened epoxy; and
said gripping glove having its gripping sections comprising abrasive particles adhered onto said glove to provide frictional contact with said sanding cloth when a sanding motion is applied but easily separate from said sanding cloth when lifted away from said sanding cloth.
15. A hand sanding system as defined in
said abrasive particles on said cloth and said glove having approximately the same grit size.
The field of this invention relates to an improved sanding system that can apply to a sanding work glove or sanding cloth.
While power sanding devices have made sanding work easier, there is still a need for hand sanding. There are many problems with hand sanding with sandpaper. The stiffness of sandpaper and the inability to get into tight corners results in awkward handling and often incomplete jobs. The sandpaper back often slips out of any grip to limit the control one has on the sandpaper. When the sandpaper is folded, a permanent crease is formed in the paper backing and the abrasive grit separates from the paper at the crease.
Many attempts have been made to eliminate sheets of sandpaper by providing a sanding glove or other sanding device. One advantage of a sanding glove is elimination of fatigue due to holding a separate piece of sandpaper. Another advantage allows the user to sand curved, grooved or more complexly shaped surfaces that may be inaccessible or difficult with sandpaper. While the general concept of having an abrasive material attached closely to a worker's hand is well known, none of the previous attempts have been commercially successful. The prior art attempts have come up short for providing a successful products for a variety of reasons.
The glove may have been too stiff and uncomfortable to wear. The worker may have lost much dexterity with his hand when the worker was wearing a stiff glove such that the glove could not be used as a work glove. Other gloves may have been uncomfortable because they were too hot and did not provide for adequate breathing or ventilation for extended wear. Other gloves were difficult to manufacture and similarly provided durability problems. Other gloves were clumsy to operate having many abrasive pads secured thereto or having removable wearable sanding surface attachable to the glove through a plurality of snaps.
A suitable interface to secure the abrasive particles directly to the glove fabric has not been heretofore achieved. While rubber coatings provide a cushion for the hand, the rubber has a low adhesion power to the abrasive particles. Secondly, rubber has a high coefficient of friction which prevents the glove from adequately sliding over the wood or plastic work piece if it comes into contact with the work surface during sanding.
Other hand sanding devices included foam blocks with an integrally formed abrasive surface. These foam blocks have limitations in fitting into tight corners and providing a tactile feedback. They are also clumsy and awkward to hold.
What is needed is an improved hand sanding system that uses a sanding cloth that has an abrasive side and a backside with a sanding gripping glove that can grip and handle the back side of the sanding cloth during sanding motion but be easily releasable when lifted from the cloth. What is also needed is an improved abrasive glove without the above mentioned problems where workers can use the glove to hand sand complex or otherwise inaccessible surfaces. The sanding glove can also double as a work glove and be used to protect the hand and as a grip to enhance the hold of a paint bush or roller handle as well as a grip device for controlling a sanding cloth.
What is needed is a comfortable wearable sanding work glove that is durable and is suitable for extended wear and provide for sufficiently low coefficient of friction for the glove. What is also needed is a flexible sanding cloth that can be easily gripped and maneuvered by a gripping hand glove but easily disengaged when the glove is lifted from the cloth for an improved hand sanding system.
In accordance to one aspect of the invention, a glove for sanding surfaces includes a knitted glove having a breathable fabric base. A flexible elastomeric layer on the exterior palm side section of the glove is adhered to the fabric base. A layer of abrasive particles is on the elastomeric layer with a connecting layer having a lower coefficient of friction than the flexible elastomeric layer. The connecting layer is constructed to adhere the layer of abrasive particles onto the flexible elastomeric layer. Preferably, the connecting layer bonds a proximate section of the abrasive particles and has thin areas between the abrasive particles to provide a plurality of flexibility point. The connecting layer is also substantially harder than the elastomeric layer to provide a secure hold of the abrasive particles to the elastomeric layer.
In one embodiment, a substantial portion of a backside of the glove is free from the flexible elastomeric coating and is breathable. Preferably, a substantial portion of a backside of finger sections of the glove is free from the flexible elastomeric coating and is breathable.
In one embodiment, the elastomeric layer is a soft rubber material and the connecting layer is an epoxy material. Alternatively, the elastomeric layer maybe a soft rubber material and the connecting layer maybe a cured urethane material.
According to another aspect of the invention, an abrasive sanding cloth has a flexible cloth layer and abrasive particles secured onto at least one side of the cloth layer. The abrasive sanding cloth preferably has its abrasive particles bonded to the cloth layer by an adhesive coating which bonds a proximate end of the abrasive particles onto the cloth. The adhesive coating has thin areas between the abrasive particles to provide flexibility points to retain flexibility of the flexible cloth layer.
In one embodiment, the cloth layer is a woven textile. In one embodiment, the adhesive coating is an epoxy material. Alternatively, the adhesive coating may be a cured urethane material.
According to another aspect of the invention, a hand sanding system has a sanding cloth with an abrasive side and a back side for handling. A gripping glove has gripping sections for providing a high coefficient of friction to engage the back side of the cloth and for moving the sanding cloth sideways but easily engageable and disengageble in a transverse vertical direction from the back side of the cloth. Preferably, the sanding cloth has abrasive particles secured onto the sanding cloth by a hardened epoxy. The gripping section of the glove has abrasive particles adhered onto the glove to provide frictional contact with the sanding cloth when a sanding motion is applied but easily separate from the sanding cloth when lifted away from the sanding cloth.
In one embodiment, the abrasive particles on the sanding cloth and the glove have approximately the same grit size.
Reference now is made to the accompanying drawings in which:
Referring now to
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The rubber or soft tacky elastomer of the layer 18 provides cushioning to the hand. The urethane, epoxy or other adhesive material connecting layer 21 is much harder and has a less coefficient of friction than the layer 18. The layer 21 by curing or drying to a harder condition also provides a better securement to the abrasive particles than the first layer18. Thus the glove 12 provides cushioning but provides needed sliding against the work piece 14 if the layer 21 comes in contact with the work piece 14. The layer 21 helps prevent the rubber layer 18 from coming into direct contact with the work piece 14 and interfering with the sanding of the work surface with a high coefficient of friction. In addition, by lowering the coefficient of friction, with the interposition of the harder layer 21, the heat build up of the glove is also reduced during sanding operation.
The backside 24 of the palm 16 and fingers 20 and sides 26 may remain free of the layers 18, 21 and abrasive particles 22. The backside 24 and sides 26 may have its fabric stretched as shown in
A knit glove with the hard shell 21 forming a plurality of thin flex points 25 retains flexibility to contour to the operators hand particularly about natural flex lines 28 shown in
The abrasive particles are securely bonded to the coating during the bonding process. The comfort of the glove promotes extended sanding time without removal of the glove. The comfort of the glove also allows extended wear time which allows other uses for the glove such as a general protective work glove or as an enhanced grip glove for paint brush, roller handles or a sanding cloth 15 described below.
In order to vastly increase durability of the glove 12, a sanding cloth 15 is used as the primary sanding surface. The cloth 15 has its abrasive particles 30 secured directly onto one side 35 of the cloth material 33 by an epoxy, urethane or other hard shell layer 31. The urethane, epoxy or other hard shell adhesive layer 31 is sprayed onto the abrasive particles 30 and cloth 15 and dried or cured thereon to secure the abrasive particles to the cloth as more clearly shown in
The back side 36 of the cloth remains free of abrasive particles. The glove 12 has its abrasive particles surface 27 free to vertically lift from the weight of the cloth 15 as shown in
In this fashion, the glove provides total control of sanding motion of the abrasive cloth over the sanding object 14. The cloth and glove are flexible to provide total conformity to both the hard and sanding work surface and to provide tactile sensation to feel any roughness i.e. bumps in the work surface through the cloth 15 and glove 12. Grit size can be conveniently changed by switching to a sanding cloth with a different grit size. The cloth has the ability to wet sand. The back side 36 of the cloth 15 and glove 12 can both be used to wipe dust off the sanded surface. Furthermore, the glove easily disengages when lifted up from the cloth 15 as illustrated in
The glove 12 provides total sanding control of a flexible abrasive cloth 16 which can sand complicated shapes and get into edges and corners. The cloth 15 can be reversed for engaging the back side 36 without the abrasive for wiping the sanding surface 14 clean. The glove 12 also by itself can be used for wiping and sanding. In one embodiment, the sanding glove may have the same grit size as the sanding cloth to allow the glove to be used as touch up sanding.
In this fashion, a superior hand sanding system is incorporated by using a glove as a gripping tool and a flexible abrasive cloth as the primary sanding instrument to add durability to the glove and provide total non-slip control of the sanding cloth on the sanding surface. It is also foreseen that the sanding cloth may be made from non-woven cloth or textile cloth. In certain applications, both sides of the cloth 15 may have abrasive particles adhered thereto. In other applications, a non-skid coating may be applied to the back side 36 of the cloth 15. In other embodiments, the sanding cloth 15 may be handled by a glove with other gripping and non-skid features.
Other variations and modifications are possible without departing from the scope and spirit of the present invention as defined by the appended claims.