Patent US3922800A successfully refreshed from Google Patents.
US3922800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Size adjustable ski boot
Assignee: K2 Corp
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Filing: 1974-07-01
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Granted: 1975-12-02
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Expires: 1994-07-01
Abstract
Abstract A ski boot adjustable to fit a range of foot sizes of the type having a molded semirigid plastic outer shell with a fixed outer size instep and toe portion and external buckles for adjusting the fit of the boot only in the ankle and shin area. At least the top and sides of the instep and toe portion of the boot being padded with a substantially nonresilient ''''slow memory'''' foam capable of being compressed to a substantial degree without resiliently pushing back and a vertically movable insole mounted within the shell. Means for vertically moving the insole actuatable from without the boot through openings in the plastic shell in or adjacent the sole portion of the boot are also disclosed.
Inventors
- 👤 Forrest A Miller
- 👤 Michael T Wirsching
- 👤 Frank A Hosick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:21
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/02; A43B13/08; A43B3/00; A43B3/26; A43B5/00; A43B5/04; A43B5/0427; A43B5/0435; A43B5/0441
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
207 words
A SKI BOOT HAVING A MOLDED PLASTIC OUTER SHELL INCLUDING: FIRST MEMBER HAVING AN ANKLE PORTION, A HEEL PORTION, A SOLE PORTION AND INSTEP AND TOE PORTIONS OF FIXED EXTERNAL SIZE; A CUFF MEMBER AFFIXED TO SAID FIRST MEMBER AND INCLUDING FASTENER MEANS HOLDING SAID CUFF MEMBER IN SURROUNDING RELATION TO SAID ANKLE PORTION; AN INSOLE SIZED TO FIT WITHIN SAID FIRST MEMBER AND SUBSTANTIALLY COVER THE BOTTOM THEREOF INCLUDING METAL PLATE MEANS ON THE BOTTOM OF SAID INSOLE; OPENING MEANS IN SAID PLASTIC SHEELL; MEANS FOR MOVING SAID INSOLE VERTICALLY WITH RESPECT TO THE SOLE PORTION OF SAID FIRST MEMBER TO CHANGE THE FOOT SIZE OF SAID SKI BOOT, SAID MEANS BEING ACCESSIBLE FOR ACTUATION FROM WITHOUT SAID PLASTIC SHELL THROUGH SAID OPENING MEANS WHILE SAID BOOT IS BEING WORN; SLOW MEMORY EXPANDED FOAM PADDING POSITION ADJACENT THE TOP AND SIDE SURFACES OF THE INSTEP PORTION OF SAID FIRST MEMBER, SAID PADDING ADPATED TO BE COMPRESSED BY MOVEMENT OF SAID INSOLE OR THE WEARER''S FOOT THEREAGAINST WITH SMALL RESILIENT RESISTANCE; AND SAID SLOW MEMORY EXPANDED FOAM PADDING BEING OF THE CLOSED CELL VINYL TYPE HAVING A COMPRESSION SET VALUE CT OF BETWEEN 15 AND 45% AND A COMPRESSION SET VALUE CD OF BETWEEN 45 AND 75%.
Claim 2
Dependent Claim
207 words
A SKI BOOT HAVING A MOLDED PLASTIC OUTER SHELL INCLUDING: FIRST MEMBER HAVING AN ANKLE PORTION, A HEEL PORTION, A SOLE PORTION AND INSTEP AND TOE PORTIONS OF FIXED EXTERNAL SIZE; A CUFF MEMBER AFFIXED TO SAID FIRST MEMBER AND INCLUDING FASTENER MEANS HOLDING SAID CUFF MEMBER IN SURROUNDING RELATION TO SAID ANKLE PORTION; AN INSOLE SIZED TO FIT WITHIN SAID FIRST MEMBER AND SUBSTANTIALLY COVER THE BOTTOM THEREOF INCLUDING METAL PLATE MEANS ON THE BOTTOM OF SAID INSOLE; OPENING MEANS IN SAID PLASTIC SHEELL; MEANS FOR MOVING SAID INSOLE VERTICALLY WITH RESPECT TO THE SOLE PORTION OF SAID FIRST MEMBER TO CHANGE THE FOOT SIZE OF SAID SKI BOOT, SAID MEANS BEING ACCESSIBLE FOR ACTUATION FROM WITHOUT SAID PLASTIC SHELL THROUGH SAID OPENING MEANS WHILE SAID BOOT IS BEING WORN; SLOW MEMORY EXPANDED FOAM PADDING POSITION ADJACENT THE TOP AND SIDE SURFACES OF THE INSTEP PORTION OF SAID FIRST MEMBER, SAID PADDING ADPATED TO BE COMPRESSED BY MOVEMENT OF SAID INSOLE OR THE WEARER''S FOOT THEREAGAINST WITH SMALL RESILIENT RESISTANCE; AND SAID SLOW MEMORY EXPANDED FOAM PADDING BEING OF THE CLOSED CELL VINYL TYPE HAVING A COMPRESSION SET VALUE CT OF BETWEEN 15 AND 45% AND A COMPRESSION SET VALUE CD OF BETWEEN 45 AND 75%.
Claim 3
Dependent Claim
25 words
The ski boot of claim 1 wherein said slow memory foam lining is encased within a fabric sock and removable from said molded plastic shell.
Claim 4
Dependent Claim
29 words
The ski boot of claim 1 wherein said slow memory foam is of the closed cell vinyl type having a compression set value Ct of between 25 and 35%.
Claim 5
Dependent Claim
29 words
The ski boot of claim 1 wherein said slow memory foam is of the closed cell vinyl type having a compression set value Cd of between 55 to 65%.
Claim 6
Dependent Claim
27 words
The ski boot of claim 1 wherein said slow memory foam is of the closed cell vinyl type having a ball rebound resilience value of approximately 33%.
Claim 7
Dependent Claim
29 words
The ski boot of claim 3 wherein said slow memory foam is of the closed cell vinyl type having a compression set value Cd of between 55 to 65%.
Claim 8
Dependent Claim
26 words
The ski boot of claim 1 wherein said molded plastic outer shell is formed from polyurethane and has a durometer hardness of between 35 and 100.
Claim 9
Dependent Claim
147 words
In a ski boot having a molded plastic shell with a sole and an arched instep and toe portion of fixed size, means for adjusting the foot size of said boot comprising: a layer of slow memory foam adjacent the inner surface of the arched instep and toe portion of said plastic shell; said slow memory expanded foam padding being of the closed cell vinyl type having a compression set value Ct of between 15 and 45% and a compression set value Cd of between 45 and 75%; an insole adapted to be moved vertically with respect to the sole of said plastic shell; opening means extending through the walls of said plastic shell on or adjacent said sole; and means for vertically moving said insole positioned therebetween and accessible for actuation through said opening means from without said plastic shell while said boot is being worn.
Claim 10
Dependent Claim
147 words
In a ski boot having a molded plastic shell with a sole and an arched instep and toe portion of fixed size, means for adjusting the foot size of said boot comprising: a layer of slow memory foam adjacent the inner surface of the arched instep and toe portion of said plastic shell; said slow memory expanded foam padding being of the closed cell vinyl type having a compression set value Ct of between 15 and 45% and a compression set value Cd of between 45 and 75%; an insole adapted to be moved vertically with respect to the sole of said plastic shell; opening means extending through the walls of said plastic shell on or adjacent said sole; and means for vertically moving said insole positioned therebetween and accessible for actuation through said opening means from without said plastic shell while said boot is being worn.
Claim 11
Dependent Claim
24 words
The ski boot of claim 8 wherein said layer of slow memory foam is fastened directly to the inner surface of said plastic shell.
Claim 12
Dependent Claim
24 words
The ski boot of claim 8 wherein said slow memory foam is encased in a fabric sock, said sock being removable from said shell.
Claim 13
Dependent Claim
150 words
A ski boot having a molded plastic outer shell, said shell being of fixed size in the instep and toe area; a rigid plastic insole sized to substantially overlay the bottom of said shell and movable vertically within the cavity of said boot; opening means in said plastic shell; means for vertically moving said insole to change the foot size of said ski boot, said means being accessible for actuation from without said plastic shell through said opening means while said boot is being worn; an inner sock positionable within and removable from said shell including a slow memory foam sandwiched between covering layers at the top and sides of the instep portion thereof; and said slow memory expanded foam padding being of the closed cell vinyl type having a compression set value Ct of between 15 and 45% and a compression set value Cd of between 45 and 75%.
Claim 14
Dependent Claim
150 words
A ski boot having a molded plastic outer shell, said shell being of fixed size in the instep and toe area; a rigid plastic insole sized to substantially overlay the bottom of said shell and movable vertically within the cavity of said boot; opening means in said plastic shell; means for vertically moving said insole to change the foot size of said ski boot, said means being accessible for actuation from without said plastic shell through said opening means while said boot is being worn; an inner sock positionable within and removable from said shell including a slow memory foam sandwiched between covering layers at the top and sides of the instep portion thereof; and said slow memory expanded foam padding being of the closed cell vinyl type having a compression set value Ct of between 15 and 45% and a compression set value Cd of between 45 and 75%.
Claim 15
Dependent Claim
68 words
The ski boot of claim 11 wherein said insole includes a metal base portion and wherein said means for vertically moving said insole includes a metal plate means positioned on the sole of said shell and mounting set screw means adapted to bear against said metal base portion of said insole, said set screws being aligned with and movable through openings in the sole of said plastic shell.
Claim 16
Dependent Claim
25 words
The ski boot of claim 12 wherein said metal plate means is rigidly fastened to the inner surface of the sole of said plastic shell.
References Cited (Backward Citations)
US3750310A
Cited
US3828448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |