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Ergonomic insoles with electrostatic protection

a technology of electrostatic protection and insoles, which is applied in the direction of uppers, bootlegs, stiffners, etc., can solve the problems of not providing static charge buildup, and achieve the effect of dissipating the detrimental static charge and reducing foot discomfort and fatigu

Inactive Publication Date: 2012-11-08
JOHNSON TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018]In accordance with the present invention, there is provided an insole for insertion in a shoe or to be formed intergrally with a shoe comprising, consisting essentially of or consisting of at least one compressible padding consisting essentially of an open-cell material characterized by a maximum compression set of 3% as measured according to American Society for Testing and Materials (ASTM) test specification D1056 and a compression deflection up to 20 psi as measured according to American Society for Testing and Materials (ASTM) test specification D3574. The insole includes electrically conductive material for the purpose of eliminating the buildup of static charge.
[0029]It is an object of this invention to provide a combination insertable insole and a shoe which, in addition to reducing foot discomfort and fatigue, also dissipates the detrimental static charge which builds up as personnel move throughout the workplace.

Problems solved by technology

Ludemann is silent in regard to physical measures such as compression set and compression force deflection, and does not provide for static charge buildup.

Method used

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  • Ergonomic insoles with electrostatic protection
  • Ergonomic insoles with electrostatic protection
  • Ergonomic insoles with electrostatic protection

Examples

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Effect test

example 1

[0073]Jane Smith is a nurse at the local hospital. She spends twelve hours on her feet per shift. The hospital requires specific shoes that do not properly support Jane's feet and she experiences much discomfort. Jane orders hospital shoes incorporating the present invention. The ergonomic padding provides the needed support to properly do her job. Her superiors commend her on her improved productivity.

example 2

[0074]A surgeon spends a large amount of time on his feet in one position performing surgeries. Due to his state's health code, he is not allowed to use an ergonomic mat. He purchases shoes incorporating the ergonomic interaction factor in psi that he needs to properly stand for long time periods. He finds that he is capable of operating an additional two hours with the new shoes.

[0075]FIG. 9 shows a cross section of the parts of a combination 100 including an upper portion 70, and insole 90 and a sole 105. Insole 90 is a multilayer insole including fabric layer 91, a closed cell layer 92, a closed cell layer 93 and an open cell layer between layers 92 and 93. The open cell area includes a heel area 95, an arch area 96, a ball area 97 and portion 94 surrounding the ball area, heel area and arch area. Areas 93 through 97 are characterized by different compression set and compression deflection values chosen to provide the particular wearer with the best comfort, maximum cushioning an...

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Abstract

An insertable shoe insole or shoe integrally formed therewith having electrostatic protection and a method of categorizing and selecting same which provides individual solutions to workplace fatigue and stress by determining the specific support needed for each individual. Specifically, the present invention defines and utilizes an ergonomic interaction factor to enable selection of a proper fitting shoe. Such selection occurs in one embodiment by dividing a person's weight by the contact area of the bottom of their feet. The insole includes an electrically conductive material for the purpose of eliminating the buildup of static charge by conducting static charges from the user's feet to conductive shoes which then transfer the charge to the floor.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from U.S. Provisional Application Ser. No. 61 / 516,406 filed on Apr. 4, 2011.TECHNICAL FIELD[0002]The present invention relates to the field of insertable shoe insoles for providing foot comfort and reducing stress and injuries caused by non-supportive and poorly designed footwear.BACKGROUND OF THE INVENTION[0003]According to occupational therapy doctors, a person standing at a static or limited range position at a workstation for prolonged periods of time may have significant cumulative trauma or other injury, such as musculoskeletal illness, pain, fatigue, or inhibited circulation. Further, when a person's body is unsupported, the muscles around the joints and spinal bones may tire quickly due to constant strain and stress. The skeletal structure of the limbs and back of the human body has a difficult time maintaining an awkward or compressed posture at an improperly positioned workstation or an unsupport...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A43B13/40A43B1/00
CPCA43B1/00A43B13/40A43B13/386A43B7/144A43B13/12A43B7/1425
Inventor JOHNSON, PAUL R.JOHNSON, ROBERT E.
Owner JOHNSON TECH CORP
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