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InsoleRelated Patent Categories: Boots, Shoes, And Leggings, Soles, CushionInsole description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070124959, Insole. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] This invention relates to insoles for use in footwear. [0002] An insole comprises a heel portion to support the heel of the foot, an arch portion to lie below the arch of the foot and a front portion on the side of the arch portion remote from the heel portion. An insole normally comprises a soft resilient material which cushions the foot in use. The insole may also be an orthotic device which is normally shaped to provide support for the arch of the foot. Such an orthotic device is usually made to the specification of a podiatrist and as such is quite an expensive item. [0003] According to one aspect of the invention there is provided an insole consisting of [0004] a main part which in use is inserted into footwear and which comprises a heel portion, an arch portion and a front portion; and [0005] a deformable member located at the arch portion which is capable of relatively easy permanent deformation. [0006] By the term "relatively easily permanent deformation" is meant that the item which can be deformed by hand but which when so deformed takes a generally permanent shape from which it would normally not be altered by the weight of the foot standing on the insole. A particular deformable member capable of relatively easy permanent deformation is a member comprising a thin strip of mild steel typically being a strip of mild steel of about one millimetre in thickness. The deformable member would normally be placed only at the arch portion of the insole. [0007] The main part normally comprises flexible resilient sheet material such as expanded ethyl vinyl acetate. Conveniently on the underside of the main part at least the arch portion thereof is an additional support of flexible sheet material which preferably lies under the deformable part so that the deformable member may be sandwiched between the main part and the additional support. The additional support preferably also extends under the heel portion of the main part. [0008] At the heel portion of the insole there is preferably an opening which is covered on the upper side of the main part by an upper member normally formed by part of the same material as the main part so that in use the spur of the heel would rest on the upper member above the opening so that there would be sufficient "give" to protect the spur of the heel from shock during walking. [0009] Desirably a closure member is provided for the opening, the closure member comprising a bottom part and an upper part which fits within the opening. All the above parts are preferably bodies of revolution. [0010] On the upper or preferably the lower side of the main part there are preferably markings to enable a user to cut the main part to the appropriate size to fit into footwear of various sizes. [0011] Embodiments of the invention will now be described by way of example with reference to the accompanying drawings. [0012] In the drawings:-- [0013] FIG. 1 is an underside view of an insole of the invention, [0014] FIG. 2 is a plan of the insole, [0015] FIG. 3 is an exploded perspective view of the underside of the insole, and [0016] FIG. 4 is a detail exploded view of the insole with an additional support, and [0017] FIG. 5 is a section on line 5-5 of FIG. 1, [0018] Referring now to the drawings there is shown an insole 10 for a shoe. The insole 10 comprises a base part 12 that is of a shape that would fit into a very large shoe. The base part 12 is made of a resilient flexible sheet material conveniently expanded ethyl vinyl acetate of about three millimetres thickness. [0019] The main part 12 comprises a forward portion 14, a heel portion 16 and an arch portion 18 which in use support the front of the foot, the heel and the arch respectively. [0020] The underside 20 of the main part 12 is of a light colour. On the underside 20 of the forward portion there is printed a number of guidelines 22 which correspond respectively to the shape of the forward part of the sole of shoes of different sizes. Reference numerals are printed on the underside to indicate the size of the shoe that the insole 10 would fit if cut on the each particular guideline 22. [0021] Running under the heel portion 16 and extending under the arch portion 18 and part of the forward portion is an intermediate member 24 which is made of a resilient flexible sheet material conveniently expanded ethyl vinyl acetate of about five millimetres thickness. The intermediate member 24 is bonded to the underside of the main part 12. [0022] Sandwiched between the intermediate member 24 and the base part 12 is a deformable member 26 formed from mild steel sheet of one millimetre thickness. This deformable member 26 has a concave inner wall 28 and a convex outer wall 30. The walls 28 and 30 are joined by rounded end parts 32 to give the deformable member 26 a generally kidney shape. This deformable steel part 26 is bonded to the facing surfaces of the intermediate member 24 and the main part 12. [0023] The heel portions 16 of the main part 12 and the rear of the intermediate member 24 have registering semi-circular rear portions 34. A circular opening 36 of a radius about three quarters of the radius of the rear portion 34 and being concentric with the rear portion 34 is formed in the intermediate member 24. [0024] On the upper side of the heel portion 16 is a disc-shaped cover member 38 located coaxially with the opening 36. The cover member 38 comprises the same material as the base part 12. On the underside of the heel portion 16 is a plug 40 comprising a circular bottom member 42 on which is coaxially mounted a smaller diameter circular projection 44 that fits within the opening 36. The annular portion of the bottom member 42 outside the projection 44 rests under and supports the intermediate member 24. The cover member 38, the bottom member 42 and the projection 44 all are made from the same sheet material as the intermediate part. [0025] In use, the forward portion 14 of the base part 12 is cut along an appropriate guide line 22 to fit a selected shoe. The user will now manipulate by hand the insole 10 so that the deformable steel member 26 is bent to an appropriate shape to provide support for the arch of the user. The plug 40 is fitted to the insole with the projection 44 fitting into the opening 36. The insole 10 is inserted into a shoe. [0026] The user can now insert his/her foot into the shoe. The insole 10 will provide a resilient support for the foot. The steel part 26 will provide a generally permanent support for the arch of the foot. The spur of the heel of the user will be located above the opening 36 so that there will be substantial "give" when the heel of the shoe meets the ground to protect the heel of the user. However excess distortion of the of the cover member 38 is prevented by the plug 40. Continue reading about Insole... Full patent description for Insole Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Insole patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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