US3662478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sole and heel of rubber or plastic
Assignee: Semperit AG Holding
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Filing: 1970-01-28
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Granted: 1972-05-16
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Expires: 1990-01-28
Abstract
Abstract The invention concerns a rubbery or plastic sole having a tread profile with at least one essentially longitudinal rib at a distance from the sole edge, and is characterized by transverse and/or inclined ribs that branch off said longitudinal rib and/or the central line of the sole, towards the tip of the shoe or form an angle Alpha of not more than 90* wherein said transverse and/or inclined ribs embrace grooves not communicating with each other. These grooves may be bent, have varying depth and/or width over their length, and have arcuate or semicircular cross section; transverse and/or inclined ribs may ramify; longitudinal ribs may be provided at the edge of the sole.
Inventors
- 👤 Johann Schwab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:03
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/22; A43B13/223
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
In footwear, especially a shoe, the combination of a sole and heel unit formed of a material selected from rubber or plastic, especially polyurethane, a tread face provided along the sole and heel, at least one longitudinal rib provided in the tread face, said longitudinal rib extending throughout the complete length of the unit in the lengthwise direction of the unit and spaced at a distance from the side edges of the unit, a plurality of rib members branching off said longitudinal rib, and all extending in concert towards the tip of the unit and forming an included angle of less than 90*, a plurality of grooves provided in the tread face, said plurality of grooves non-communicating with one another and bounding said rib members, said grooves being positioned in alternate lateral spaces across the longitudinal rib in the longitudinal direction.
Claim 2
Dependent Claim
141 words
In footwear, especially a shoe, the combination of a sole and heel unit formed of a material selected from rubber or plastic, especially polyurethane, a tread face provided along the sole and heel, at least one longitudinal rib provided in the tread face, said longitudinal rib extending throughout the complete length of the unit in the lengthwise direction of the unit and spaced at a distance from the side edges of the unit, a plurality of rib members branching off said longitudinal rib, and all extending in concert towards the tip of the unit and forming an included angle of less than 90*, a plurality of grooves provided in the tread face, said plurality of grooves non-communicating with one another and bounding said rib members, said grooves being positioned in alternate lateral spaces across the longitudinal rib in the longitudinal direction.
Claim 3
Dependent Claim
24 words
The footwear as defined in claim 1, wherein the depth of said grooves varies from the center to the side edges of the unit.
Claim 4
Dependent Claim
24 words
The footwear as defined in claim 1, wherein the width of said grooves varies from the center to the side edges of the unit.
Claim 5
Dependent Claim
12 words
The footwear as defined in claim 1, wherein said grooves are arcuate.
Claim 6
Dependent Claim
40 words
The footwear as defined in claim 4, wherein a tangent to the outside surface of any groove extends in the direction of the tip of the unit and forms an angle with said longitudinal rib which is less than 90*.
Claim 7
Dependent Claim
23 words
The footwear as defined in claim 1, wherein said grooves being provided with branches forming an angle with respect to said rib members.
Claim 8
Dependent Claim
31 words
The footwear as defined in claim 1, wherein said rib members branching off said longitudinal rib form an angle of between approximately 30* and 60* with respect to said longitudinal rib.
Claim 9
Dependent Claim
13 words
The footwear as defined in claim 7, wherein said angle is approximately 45*.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |