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US5164793A Expired / Lapsed US ⏱️ 0.0 years remaining

Shoe size selection system and apparatus therefor

Assignee: Caleres Inc
•
Filing: 1991-09-13
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Granted: 1992-11-17
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Expires: 2011-09-13
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Abstract

Abstract A shoe size selection system using a foot image to obtain measurement information in three dimensions leading to a proper shoe size recommendation. The system provides a computer program that interprets three-dimensional information about a foot and calculates the key features that relate foot length and girth data that affect the comfort and fit of a shoe. Apparatus is used to allow the computer to reproduce on a viewing screen the results of a scan of a foot and to indicate on a chart a preferred shoe size for a foot that may be normal as to physical form or abnormal as to physical form.

Inventors

  • 👤 Charles Wolfersberger
  • 👤 Mark D. Linneman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:09
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/24; G01B11/25; A; A43; A43D; A43D1/00; A43D1/02; A43D1/025; A43D1/027

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 142 words
A shoe size selection system for determining a size acceptable to the shape of a foot that is intended to wear the shoe, in which the improvement comprises: (a) a support to receive a foot to be measured for size; (b) a laser light source; (c) means to structure and move said laser light for scanning over a foot on said support; (d) camera means positioned to view a foot on said support during laser light scanning; (e) computer means connected to said laser light source and said camera means to calculate three-dimensional size information about a foot on said support; (f) program means in said computer means to compare shoe length and girth with a foot on said support; and (g) viewing means connected to said computer means for displaying the calculated three-dimensional size information about a foot on said support.
Claim 2
Dependent Claim 142 words
A shoe size selection system for determining a size acceptable to the shape of a foot that is intended to wear the shoe, in which the improvement comprises: (a) a support to receive a foot to be measured for size; (b) a laser light source; (c) means to structure and move said laser light for scanning over a foot on said support; (d) camera means positioned to view a foot on said support during laser light scanning; (e) computer means connected to said laser light source and said camera means to calculate three-dimensional size information about a foot on said support; (f) program means in said computer means to compare shoe length and girth with a foot on said support; and (g) viewing means connected to said computer means for displaying the calculated three-dimensional size information about a foot on said support.
Claim 3
Dependent Claim 26 words
The improvement set forth in claim 1 wherein said support to receive a foot includes heel stop means adapted to compensate for bony and fleshy heels.
Claim 4
Dependent Claim 25 words
The improvement set forth in claim 1 wherein said computer means includes routines for analyzing toe shapes to modify the length measurement of the foot.
Claim 5
Dependent Claim 25 words
The improvement set forth in claim 1 wherein said computer means includes routines for modifying foot girth measurements upon detection of abnormalities affecting width sizing.
Claim 6
Dependent Claim 175 words
In foot measuring apparatus for determining a shoe size that is acceptable to the characteristics of the shape of the foot that is to wear the shoe, the improvement comprising: (a) a foot supporting surface having a foot heel backstop for setting the starting position from which the shoe size is to be determined; (b) means for scanning the foot while on said foot support surface; (c) means for illuminating the foot to activate said scanning means to produce an image of the foot and its shape characteristics; (d) computer means for storing a shoe size chart having foot girth and length blocks thereon; (e) means in said computer means for reproducing said computer-stored chart, said image of said foot and its shape characteristics and an indication of the girth and length of the foot on said computer-stored chart for visual comparison with said girth and length blocks; and (f) means in said computer means to produce a printout graphically indicating a shoe size responsive to the shape of the foot to wear the shoe.
Claim 7
Dependent Claim 175 words
In foot measuring apparatus for determining a shoe size that is acceptable to the characteristics of the shape of the foot that is to wear the shoe, the improvement comprising: (a) a foot supporting surface having a foot heel backstop for setting the starting position from which the shoe size is to be determined; (b) means for scanning the foot while on said foot support surface; (c) means for illuminating the foot to activate said scanning means to produce an image of the foot and its shape characteristics; (d) computer means for storing a shoe size chart having foot girth and length blocks thereon; (e) means in said computer means for reproducing said computer-stored chart, said image of said foot and its shape characteristics and an indication of the girth and length of the foot on said computer-stored chart for visual comparison with said girth and length blocks; and (f) means in said computer means to produce a printout graphically indicating a shoe size responsive to the shape of the foot to wear the shoe.
Claim 8
Independent Claim 123 words
A method of selecting a shoe size for a foot having a predetermined shape and length in which the method includes: (a) supporting a foot in a pre-determined position to expose its shape and length in two dimensions; (b) illuminating the foot to provide a lighted image thereof; (c) developing a two-dimensional view of the lighted image; (d) subjecting the lighted two dimensional view to triangulation calculations to obtain three-dimensional information which describe the exposed surface of the foot; (e) providing a chart relating foot length and girth to a group of representative shoe sizes; (f) displaying an image of the foot described by the three-dimensional information thereof; and (g) indicating on the chart at least one shoe size to accommodate the foot.
Claim 9
Independent Claim 123 words
A method of selecting a shoe size for a foot having a predetermined shape and length in which the method includes: (a) supporting a foot in a pre-determined position to expose its shape and length in two dimensions; (b) illuminating the foot to provide a lighted image thereof; (c) developing a two-dimensional view of the lighted image; (d) subjecting the lighted two dimensional view to triangulation calculations to obtain three-dimensional information which describe the exposed surface of the foot; (e) providing a chart relating foot length and girth to a group of representative shoe sizes; (f) displaying an image of the foot described by the three-dimensional information thereof; and (g) indicating on the chart at least one shoe size to accommodate the foot.
Claim 10
Dependent Claim 28 words
The method set forth in claim 6 in which the method supporting a foot accounts for a heel configuration that determines a net length dimension of the foot.
Claim 11
Dependent Claim 26 words
The method set forth in claim 6 in which subjecting the lighted image to triangulation calculations accounts for foot width variations used to detect foot abnormalities.
Claim 12
Dependent Claim 28 words
The method set forth in claim 6 in which the triangulation calculations to obtain three-dimensional information includes a foot girth profile detection for abnormalities which affect width sizing.
Claim 13
Dependent Claim 93 words
In a shoe size determination method, the improvement of: (a) providing a software program which relates foot length, width and thickness data to shoe size; (b) scanning a foot with a laser beam from a given angular location relative to the foot; (c) creating a camera visual image of the foot during the laser beam scanning; (d) electronically transmitting the camera created visual image into the software program; and (e) producing a size chart of shoe length to girth with the shoe size indicated on the size chart to suit the foot size.
Claim 14
Dependent Claim 93 words
In a shoe size determination method, the improvement of: (a) providing a software program which relates foot length, width and thickness data to shoe size; (b) scanning a foot with a laser beam from a given angular location relative to the foot; (c) creating a camera visual image of the foot during the laser beam scanning; (d) electronically transmitting the camera created visual image into the software program; and (e) producing a size chart of shoe length to girth with the shoe size indicated on the size chart to suit the foot size.

References Cited (Backward Citations)

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US4745290A Cited
JPS63277918A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-11-17 1996-05-18 1996-11-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-11-17 2000-05-18 2000-11-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-11-17 2004-05-18 2004-11-17 $7700.00 Window Closed / Lapsed

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