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US3830101A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for measuring the vertical force required to release a ski boot from a ski heel clamp

Assignee: Individual
•
Filing: 1973-03-13
•
Granted: 1974-08-20
•
Expires: 1993-03-13
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Abstract

Abstract A Y-shaped lever arm has a forked forward end adapted to straddle the heel of the boot. A heel lifting strap is connected at its ends to the forked end of the lever arm so that the mid portion of the strap may be inserted under the heel of a boot while the boot is secured to a ski by a conventional type of binding having a releasable heel clamp. At an intermediate position in the length of the lever arm a vertical cup member is mounted between the arms of the fork. In the bottom of the cup is a chamber for hydraulic fluid connected with a maximum reading pressure gauge in the upper part of the cup. The lower end of the cup contains a vertical plunger having fulcrum rollers on its lower end to bear against the top of the ski behind the heel binding. The upper end of the plunger bears against a diaphragm closing the lower side of the fluid chamber whereby a downward force applied to the rear end of the lever arm produces an indication in the pressure gauge of the uplift force applied to the boot heel. The rear end of the lever arm is equipped with a folding handle to provide a compact package when the device is not in use.

Inventors

  • 👤 M Frey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 03:38
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/03; A; A63; A63C; A63C11/00; A63C11/26; A63C11/265

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 113 words
A device for measuring the uplift force required to release a ski boot from a ski heel clamp comprising a lever arm having a forward end equipped with lift means adapted to extend under the heel of a boot secured on a ski by a releasable binding, a housing mounted on said lever arm, a vertical plunger slidable in said housing, fulcrum rollers on the lower end of said plunger adapted to rest on the ski, a hydraulic fluid chamber in said housing, a diaphragm closing the bottom of said chamber and bearing against the upper end of said plunger, and a maximum reading pressure gauge in said housing connected to said chamber.
Claim 2
Independent Claim 113 words
A device for measuring the uplift force required to release a ski boot from a ski heel clamp comprising a lever arm having a forward end equipped with lift means adapted to extend under the heel of a boot secured on a ski by a releasable binding, a housing mounted on said lever arm, a vertical plunger slidable in said housing, fulcrum rollers on the lower end of said plunger adapted to rest on the ski, a hydraulic fluid chamber in said housing, a diaphragm closing the bottom of said chamber and bearing against the upper end of said plunger, and a maximum reading pressure gauge in said housing connected to said chamber.
Claim 3
Dependent Claim 46 words
A device as defined in claim 1, said lever arm comprising a Y-shaped member having a pair of arms adapted to straddle the boot, said lift means comprising a sling attached to said pair of arms, and said housing being mounted between said pair of arms.
Claim 4
Dependent Claim 50 words
A device as defined in claim 2, including a handle pivotally mounted between said pair of arms on a pin interconnecting said pair of arms, and a second pin interconnecting said pair of arms to form an abutment for limiting the pivotal movement of said handle in a downward direction.
Claim 5
Dependent Claim 53 words
A device as defined in claim 1, said housing comprising a cup having a bottom part with a vertical bore for said plunger, said fluid chamber and diaphragm being mounted on said bottom part, and said pressure gauge being mounted on said fluid chamber and disposed in the upper part of said cup.
Claim 6
Dependent Claim 40 words
A device as defined in claim 3 including a small horizontal pin in said bottom part intersecting said bore and extending through a large hole in said plunger to retain the plunger and allow vertical movement thereof in said bore.
Claim 7
Dependent Claim 24 words
A device as defined in claim 1 including a folding handle arranged to extend the length of the rear end of said lever arm.
Claim 8
Dependent Claim 31 words
A device as defined in claim 3, including a collar on said handle to define the limit of a hand grip between said collar and the free end of the handle.

References Cited (Backward Citations)

US3309919A Cited
US2337546A Cited
US3621712A Cited
US3602044A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-08-19 1978-02-18 1978-08-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-08-19 1982-02-18 1982-08-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-08-19 1986-02-18 1986-08-20 $7700.00 Window Closed / Lapsed

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