Patent US3744540A successfully refreshed from Google Patents.
US4371985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conical bladder
Assignee: Individual
•
Filing: 1980-05-06
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Granted: 1983-02-08
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Expires: 2000-05-06
Abstract
Abstract A device comprising a conical, inflated bladder to be mounted on the back of a user's leg to aid in the distribution of body weight when the user is in a squating or kneeling position.
Inventors
- 👤 Naum Pokhis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:42
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/05; A41D13/06; A41D13/065; A41D13/055; A41D13/0556; A41D13/0568
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
A device for facilitating squating and kneeling, comprising an inflatable bladder arranged to be located on a rear surface of a user's leg below a knee bend and movable between an operative position in which it is inflated and assumes a conical shape decreasing from a lower part of the user's leg to the leg bend in correspondence with a space between a user's calf and a user's thigh in squating or kneeling position so that a user's body is supported on thus inflated bladder while squating or kneeling, and an inoperative position in which said bladder is also located in the same region but is deflated and assumes a substantially flat shape so as not to disturb the user; and means for mounting said bladder in said region.
Claim 2
Independent Claim
129 words
A device for facilitating squating and kneeling, comprising an inflatable bladder arranged to be located on a rear surface of a user's leg below a knee bend and movable between an operative position in which it is inflated and assumes a conical shape decreasing from a lower part of the user's leg to the leg bend in correspondence with a space between a user's calf and a user's thigh in squating or kneeling position so that a user's body is supported on thus inflated bladder while squating or kneeling, and an inoperative position in which said bladder is also located in the same region but is deflated and assumes a substantially flat shape so as not to disturb the user; and means for mounting said bladder in said region.
Claim 3
Dependent Claim
24 words
A device as defined in claim 1, wherein said conical shape of said bladder in said inflated operative position decreases to a pointed end.
Claim 4
Dependent Claim
21 words
A bladder as defined in claim 1, wherein said mounting means is arranged to mount said bladder to the user's leg.
Claim 5
Dependent Claim
22 words
A bladder as defined in claim 1, wherein said mounting means is arranged so as to mount said bladder to user's pants.
Claim 6
Dependent Claim
35 words
A device as defined in claim 1, wherein said bladder has a cross section in direction transverse to said first direction, which is provided with recess arranged to embrace the user's leg from the rear.
Claim 7
Dependent Claim
21 words
A device as defined in claim 1, wherein said bladder in said inflated condition is inflated so that it remains soft.
Claim 8
Dependent Claim
26 words
A device as defined in claim 1, wherein said bladder has a non-inflattable portion to be clamped by a leg in bent condition of the latter.
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) | 1986-02-07 | 1986-08-09 | 1987-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-07 | 1990-08-09 | 1991-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-07 | 1994-08-09 | 1995-02-08 | $7700.00 | Window Closed / Lapsed |