Patent US3330576A successfully refreshed from Google Patents.
Patent US3822490A successfully refreshed from Google Patents.
US3822490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow member for shoes
Assignee: Individual
•
Filing: 1973-05-02
•
Granted: 1974-07-09
•
Expires: 1993-05-02
Abstract
Abstract A hollow member for a shoe which includes a recessed construction so that as the user walks a cushioned effect is provided.
Inventors
- 👤 S Murawski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:16
CPC Classifications
A; A43; A43B; A43B21/00; A43B21/24; A43B21/26; A43B13/00; A43B13/14; A43B13/18; A43B13/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
63 words
In a hollow heel for a shoe that includes an upper and a sole, said heel comprising an inclined top surface, a bottom piece, said heel including a body portion having a recess in the rear thereof that defines upper and lower portions that can flex towards and away from each other, said heel having an opening therein that communicates with said recess.
Claim 2
Dependent Claim
63 words
In a hollow heel for a shoe that includes an upper and a sole, said heel comprising an inclined top surface, a bottom piece, said heel including a body portion having a recess in the rear thereof that defines upper and lower portions that can flex towards and away from each other, said heel having an opening therein that communicates with said recess.
Claim 3
Dependent Claim
18 words
The structure as defined in claim 1 wherein the lower rear portion of the heel is squared off.
Claim 4
Dependent Claim
139 words
In a hollow heel for a shoe including a sole, and an upper, said heel including top and bottom pieces, said sole having openings therein, nipples projecting from the top and bottom of the heel, the top nipples received in the openings in the sole, a base piece having openings for receiving the lower nipples, a pair of spaced apart side pieces interposed between said top and bottom pieces, said side pieces having V-shaped grooves in the outer surfaces thereof, each of said side pieces having a tapered formation and wherein the front of side pieces tapers to a point and the rear thereof is of wider construction, reinforcing material surrounding said side pieces for retaining the side pieces in place, the front and rear ends of the heel being open, said heel being made of flexible plastic-like material.
Claim 5
Dependent Claim
139 words
In a hollow heel for a shoe including a sole, and an upper, said heel including top and bottom pieces, said sole having openings therein, nipples projecting from the top and bottom of the heel, the top nipples received in the openings in the sole, a base piece having openings for receiving the lower nipples, a pair of spaced apart side pieces interposed between said top and bottom pieces, said side pieces having V-shaped grooves in the outer surfaces thereof, each of said side pieces having a tapered formation and wherein the front of side pieces tapers to a point and the rear thereof is of wider construction, reinforcing material surrounding said side pieces for retaining the side pieces in place, the front and rear ends of the heel being open, said heel being made of flexible plastic-like material.
Claim 6
Dependent Claim
44 words
In a shoe, an upper and a sole, a hollow base affixed to said sole at its outer periphery, and said base including a side member having V-shaped grooves therein to permit flexing action, and hollow tubes arranged in the sole providing supporting members.
Claim 7
Dependent Claim
44 words
In a shoe, an upper and a sole, a hollow base affixed to said sole at its outer periphery, and said base including a side member having V-shaped grooves therein to permit flexing action, and hollow tubes arranged in the sole providing supporting members.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |