US3950865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety box toe
Assignee: Bata Shoe Co Inc
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Filing: 1975-04-08
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Granted: 1976-04-20
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Expires: 1995-04-08
Abstract
Abstract A safety box toe for use in shoes and the like having flange means on the lower edge thereof wherein the total of the horizontally projected areas of the flange means rearwardly of an imaginary transverse test axis one-half inch in front of the center back edge of the box toe is at least equal to the total of the horizontally projected areas of the flange means forwardly of that axis, with the maximum transverse width of the flange means on each side of the box toe element being no more than 20 percent of the overall maximum width of the box toe element. This "balanced flange" design provides improved compression and impact test result according to conventional standards.
Inventors
- 👤 B. Everett Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:41
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/08; A43B23/081; A43B23/082
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
197 words
In a safety box toe for use in shoes and the like including a relatively rigid stiffener element having a closed front end portion and an open rear end portion terminating in a back edge, the distance between the lower-most portions of said back edge defining the overall width of said element and the longitudinal center of said back edge defining the highest point of said element, said element being of a generally inverted U-shaped in transverse cross-section and including lower edge portions extending generally horizontally in use with flange means extending inwardly from said lower edge portions, and an imaginary test axis extending transversely of said element spaced forwardly of said highest point of said back edge by a predetermined amount in accordance with American National Standards, the improvement which comprises the total of the horizontally projected areas of said flange means rearwardly of said test axis being at least equal to the total of the horizontally projected areas of said flange means forwardly of said test axis, and the maximum transverse width of said flange means on each side of said element being no more than 20 percent of said overall width of said element.
Claim 2
Dependent Claim
197 words
In a safety box toe for use in shoes and the like including a relatively rigid stiffener element having a closed front end portion and an open rear end portion terminating in a back edge, the distance between the lower-most portions of said back edge defining the overall width of said element and the longitudinal center of said back edge defining the highest point of said element, said element being of a generally inverted U-shaped in transverse cross-section and including lower edge portions extending generally horizontally in use with flange means extending inwardly from said lower edge portions, and an imaginary test axis extending transversely of said element spaced forwardly of said highest point of said back edge by a predetermined amount in accordance with American National Standards, the improvement which comprises the total of the horizontally projected areas of said flange means rearwardly of said test axis being at least equal to the total of the horizontally projected areas of said flange means forwardly of said test axis, and the maximum transverse width of said flange means on each side of said element being no more than 20 percent of said overall width of said element.
Claim 3
Dependent Claim
13 words
The box toe of claim 1 wherein said element is formed of metal.
Claim 4
Dependent Claim
12 words
The box toe of claim 1 wherein said flange means is continuous.
Claim 5
Dependent Claim
26 words
The box toe of claim 3 wherein said flange means increases in width from said front end portion of said rear end portion of said element.
Claim 6
Dependent Claim
29 words
The box toe of claim 1 wherein said flange means extends downwardly from said lower edge portions at an angle of no more than 45 degrees from the horizontal.
Claim 7
Dependent Claim
25 words
The box toe of claim 1 wherein said imaginary test axis is spaced forwardly of said highest point of said back edge by one-half inch.
References Cited (Backward Citations)
US1823924A
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US2111536A
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US2151554A
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US2409880A
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US2537891A
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US2740209A
Cited
US3325922A
Cited
US3593438A
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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) | 1979-04-20 | 1979-10-20 | 1980-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-20 | 1983-10-20 | 1984-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-20 | 1987-10-20 | 1988-04-20 | $7700.00 | Window Closed / Lapsed |