Patent US3668792A successfully refreshed from Google Patents.
US3668792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breakaway athletic safety shoe
Assignee: Individual
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Filing: 1971-01-08
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Granted: 1972-06-13
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Expires: 1991-01-08
Abstract
Abstract The athletic safety shoe has an upper sole mounted on the body of the shoe and a lower breakaway safety sole having traction means on the underside thereof and releasibly attached to the upper sole by a breakaway safety mechanism. The upper sole has a downwardly extending rib with an enlarged head portion attached to the upper sole by a relatively narrow neck portion. The safety sole has a generally transversely extending grooved track configured to slideably receive the rib. The track prevents longitudinal movement of the soles relative to each other when the rib is disposed in place in the track. The safety sole has a retaining part engaged with the rib adjacent the neck portion to prevent upward movement of the rib out of the track. A pressure piece is engaged with the rib and mounted on the safety sole under the grooved track. A spring biases the pressure piece into frictional engagement with the rib to prevent the rib from sliding in the track until a predetermined transverse force is applied.
Inventors
- 👤 William A York
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:29
CPC Classifications
A; A43; A43C; A43C15/00; A43C15/16; A43C15/161; A43B; A43B13/00; A43B13/28; A43B5/00; A43C15/168
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
168 words
An athletic safety shoe including an upper sole mounted on the body of the shoe; a lower breakaway safety sole having traction means on the underside thereof, said safety sole being releasibly attached to said upper sole by a breakaway safety mechanism wherein one of said soles has a release rib extending toward the other sole; said other sole having a grooved track extending generally in a transverse direction and configured to slidably receive said rib, said grooved track preventing longitudinal movement of said soles relative to each other when said rib is disposed in place in said track; retaining means preventing upward movement of said rib out of said track; a pressure piece frictionally engageable with said rib and mounted in said other sole under said grooved track; and biasing means mounted on said other sole applying a predetermined pressure biasing said pressure piece into frictional engagement with said rib to prevent said rib from sliding in said track until a minimum predetermined transverse force is applied.
Claim 2
Dependent Claim
168 words
An athletic safety shoe including an upper sole mounted on the body of the shoe; a lower breakaway safety sole having traction means on the underside thereof, said safety sole being releasibly attached to said upper sole by a breakaway safety mechanism wherein one of said soles has a release rib extending toward the other sole; said other sole having a grooved track extending generally in a transverse direction and configured to slidably receive said rib, said grooved track preventing longitudinal movement of said soles relative to each other when said rib is disposed in place in said track; retaining means preventing upward movement of said rib out of said track; a pressure piece frictionally engageable with said rib and mounted in said other sole under said grooved track; and biasing means mounted on said other sole applying a predetermined pressure biasing said pressure piece into frictional engagement with said rib to prevent said rib from sliding in said track until a minimum predetermined transverse force is applied.
Claim 3
Dependent Claim
64 words
The athletic safety shoe of claim 1 wherein said retaining means preventing upward movement of said rib out of said track includes said rib formed with an enlarged head portion attached to said one of said soles by a relatively narrow neck portion and a retaining part on said other sole engaged with said rib adjacent said neck poRtion to prevent said upward movement.
Claim 4
Dependent Claim
50 words
The athletic safety shoe of claim 2 wherein said safety sole and said upper sole are releasably attached to each other by breakaway safety mechanisms at both the pivot points of said shoe at the heel and under the ball of the foot of the wearer of said athletic shoe.
Claim 5
Dependent Claim
36 words
The athletic safety shoe of claim 2 wherein said rib is T-shaped and wherein said grooved track is similarly configured to receive said rib to prevent upward movement of said rib out of said grooved track.
Claim 6
Dependent Claim
52 words
The athletic safety shoe of claim 4 wherein said biasing means is a compression spring mounted in said other sole supported on one side by a movable plug, and wherein locking means hold said plug in a fixed position, said locking means being releasable so that said compression spring may be replaced.
Claim 7
Dependent Claim
195 words
An athletic safety shoe including an upper sole mounted on the body of the shoe; a lower breakaway safety sole having traction means on the underside thereof, said safety sole being releasably attached to said upper sole; one of said soles has a release rib extending toward the other sole, said rib having an enlarged head portion attached to said one of said soles by a relatively narrow neck portion; said other sole having a grooved track extending generally in a transverse direction and configured to slidably receive said rib, said grooved track preventing longitudinal movement of said soles relative to each other when said rib is disposed in place in said track; said safety sole having a retaining part engageable with said rib adjacent said neck portion preventing upward movement of said rib out of said track; a pressure piece frictionally engageable with said rib and mounted in said other sole under said grooved track; and biasing means mounted on said other sole applying a predetermined pressure biasing said pressure piece into frictional engagement with said rib to prevent said rib from sliding in said track until a minimum predetermined transverse force is applied.
Claim 8
Dependent Claim
195 words
An athletic safety shoe including an upper sole mounted on the body of the shoe; a lower breakaway safety sole having traction means on the underside thereof, said safety sole being releasably attached to said upper sole; one of said soles has a release rib extending toward the other sole, said rib having an enlarged head portion attached to said one of said soles by a relatively narrow neck portion; said other sole having a grooved track extending generally in a transverse direction and configured to slidably receive said rib, said grooved track preventing longitudinal movement of said soles relative to each other when said rib is disposed in place in said track; said safety sole having a retaining part engageable with said rib adjacent said neck portion preventing upward movement of said rib out of said track; a pressure piece frictionally engageable with said rib and mounted in said other sole under said grooved track; and biasing means mounted on said other sole applying a predetermined pressure biasing said pressure piece into frictional engagement with said rib to prevent said rib from sliding in said track until a minimum predetermined transverse force is applied.
Claim 9
Dependent Claim
51 words
The athletic safety shoe of claim 6 wherein said safety sole and said upper sole are releasibly attached to each other by breakaway safety mechanisms at both of the pivot points of said shoe under the heel and under the ball of the foot of the wearer of said athletic shoe.
Claim 10
Dependent Claim
36 words
The athletic safety shoe of claim 7 wherein said rib is T-shaped and wherein said grooved track is similarly configured to receive said rib to prevent upward movement of said rib out of said grooved track.
Claim 11
Dependent Claim
53 words
The athletic safety shoe of claim 8 wherein said biasing means is a compression spring mounted in said safety sole and supported on one side by a movable plug and wherein locking means hold said plug in a fixed position, said locking means being releasable so that said compression spring may be replaced.
Claim 12
Dependent Claim
181 words
An athletic safety shoe including an upper sole mounted on the body of the shoe; a lower breakaway safety sole having a traction means on the underside thereof, said safety sole being releasibly attached to said upper sole; said upper sole has a downwardly extending rib with an enlarged head portion attached to said upper sole by a relatively narrow neck portion; said safety sole having a generally transversely extending grooved track configured to slidably receive said rib, said track preventing longitudinal movement of said soles relative to each other when said rib is disposed in place in said track; said safety sole having a retaining part engageable with said rib adjacent said neck portion preventing upward movement of said rib out of said track; a pressure piece engageable with said rib and mounted in said safety sole under said grooved track; and biasing means mounted in said safety sole applying a predetermined pressure urging said pressure piece into frictional engagement with said rib to prevent said rib from sliding in said track until a minimum predetermined transverse force is applied.
Claim 13
Dependent Claim
181 words
An athletic safety shoe including an upper sole mounted on the body of the shoe; a lower breakaway safety sole having a traction means on the underside thereof, said safety sole being releasibly attached to said upper sole; said upper sole has a downwardly extending rib with an enlarged head portion attached to said upper sole by a relatively narrow neck portion; said safety sole having a generally transversely extending grooved track configured to slidably receive said rib, said track preventing longitudinal movement of said soles relative to each other when said rib is disposed in place in said track; said safety sole having a retaining part engageable with said rib adjacent said neck portion preventing upward movement of said rib out of said track; a pressure piece engageable with said rib and mounted in said safety sole under said grooved track; and biasing means mounted in said safety sole applying a predetermined pressure urging said pressure piece into frictional engagement with said rib to prevent said rib from sliding in said track until a minimum predetermined transverse force is applied.
Claim 14
Dependent Claim
51 words
The athletic safety shoe of claim 10 wherein said safety sole and said upper sole Are releasibly attached to each other by breakaway safety mechanisms at both of the pivot points of said shoe under the heel and under the ball of the foot of the wearer of said athletic shoe.
Claim 15
Dependent Claim
36 words
The athletic safety shoe of claim 11 wherein said rib is T-shaped and wherein said grooved track is similarly configured to receive said rib to prevent upward movement of said rib out of said grooved track.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |