Patent EP0049019A1 successfully refreshed from Google Patents.
EP0049019A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Walking sole to be used under an immobilizing bandage of the lower leg whereby all foot joints are rigid
Assignee: SPRONKEN ORTHOPEDIE PROTHESECENTRUM PVBA
•
Filing: 1981-09-25
•
Granted: —
•
Expires: 2001-09-25
Abstract
Abstract The running surface of the walking sole (1), seen in its longitudinal direction, consisting of three essentially flat parts (2, 3, 4) which merge into one another with rounded off parts (5, 6), the foremost part (4) being curved upwards from the centre part (3) under an angle (β) between 25° and 35° and the hindmost part (2) under an angle (a) between 15° and 25°, the distance (d) between the plane of the centre part (3) and the highest point of the foremost part (4) being (11 ± 1) % and the distance (e) between said plane and the highest point of the hindmost part (2) being (3 ± 1) % of the fictive length (FL) which equals 1.5 [length (a) of the sole in mm - 15 mm], the rear end of the walking sole (1) being approximately at a right angle to the centre plane (2) and the uppermost point of the rear end and of the front end lying in a plane which is approximately parallel to the centre plane (3).
Inventors
- 👤 Eugéne Nicolaas Marie Spronken
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 15:37
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/143; A43B13/148; A43B3/00; A43B3/12; A43B3/128; A61; A61F; A61F13/00; A61F13/04; A61F13/041; A61F13/045
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
224 words
Walking sole to be used under an immobilizing bandage of the lower leg whereby all foot joints are rigid, of which walking sole the surface coming into contact with the ground is curved upwards from the centre part to the foremost part, which is situated under the toes, characterized in that the running surface, seen in the longitudinal direction, consists of three essentially flat parts (2,3,4), which merge into one another with rounded off parts (5,6), the foremost part (4) being curved upwards from the centre part (3) under an angle S between 25 and 35° and the hindmost part (2) under an angle a between 15 and 25°, the distance d between the plane of the centre part (3) and the highest point of the foremost part (4) being (11 + 1) % and the distance e between the plane of the centre part (3) and the highest point of the hindmost part (2) being (3 + 1) % of the fictive length FL, which equals 1.5 (length a of the sole in mm - 15 mm) and the rear end of the walking sole (1) being approximatively at a right angle to the centre plane (2) and the uppermost point of the rear end and of the front end lying in a plane, which is approximately parallel to the centre plane (3).
Claim 2
Dependent Claim
224 words
Walking sole to be used under an immobilizing bandage of the lower leg whereby all foot joints are rigid, of which walking sole the surface coming into contact with the ground is curved upwards from the centre part to the foremost part, which is situated under the toes, characterized in that the running surface, seen in the longitudinal direction, consists of three essentially flat parts (2,3,4), which merge into one another with rounded off parts (5,6), the foremost part (4) being curved upwards from the centre part (3) under an angle S between 25 and 35° and the hindmost part (2) under an angle a between 15 and 25°, the distance d between the plane of the centre part (3) and the highest point of the foremost part (4) being (11 + 1) % and the distance e between the plane of the centre part (3) and the highest point of the hindmost part (2) being (3 + 1) % of the fictive length FL, which equals 1.5 (length a of the sole in mm - 15 mm) and the rear end of the walking sole (1) being approximatively at a right angle to the centre plane (2) and the uppermost point of the rear end and of the front end lying in a plane, which is approximately parallel to the centre plane (3).
Claim 3
Dependent Claim
75 words
Walking sole according to claim 1, characterized in that the flat centre part (3) of the walking sole (1) extends itself between a point at a distance b equal to (38 + 3) % Fl - (4 + 1) mm from the foremost point of the walking sole and a point at the distance f equal to (10 + 1) % FL + (4 + 1) mm from the hindmost point of the walking sole.
Claim 4
Dependent Claim
50 words
Walking sole according to claims 1 or 2, characterized in that the hindmost inclined flat part (2) of the walking sole (1) extends until a point at a distance h equal to (9 + 2) % FL + (4 + 1) mm from the hindmost part of the walking sole.
Claim 5
Dependent Claim
42 words
Walking sole according to claim 3, characterized in that between the point at the distance h and the point at the distance f a parabolic transition (5) has been provided between the hindmost flat part (2) and the centre flat part (3).
Claim 6
Dependent Claim
129 words
Walking sole according to anyone of the claims 2 - 4, characterized in that the line (10) where the centre part (3) of the walking sole merges into the rounding off (6) towards the foremost, upwards inclined part (4), will begin in a point of the circumferential line of the inside of the sole, the side which is turned towards the user's other foot when the walking sole is used, which lies at the distance b from the foremost point of the walking sole and forms and angle y with a line at a right angle to the longitudinal direction of the walking sole, of 15° at the most and this in such a way, that the line extends backwards from said point of the inside of the sole.
Claim 7
Dependent Claim
92 words
Walking sole according to claim 5, characterized in that the rounding off (6) merges into the foremost upwards inclined part (4) according to a line (11) which is parallel to the line (10) where the centre part (3) of the walking sole merges into the rounding off (6) towards the foremost part (4) and which begins in a point of the circumferential line of the inside of the walking sole, which lies at the distance k from the foremost point of the walking sole, k equalling (11 + 2) % of FL.
Claim 8
Dependent Claim
46 words
Walking sole according to any of the preceding claims, characterized in that a small protrusion (12), limited by a circle, is provided in the foremost upwards inclined part (4) of the walking sole (1) and in particular in the transition part (6) towards the centre part.
Claim 9
Dependent Claim
25 words
Walking sole according to any of the preceding claims, characterized in that the upper surface (13) thereof is adapted to the shape of the foot.
Claim 10
Dependent Claim
24 words
Walking sole according to any of the preceding claims, characterized in that the length thereof is adapted to the length of the user's foot.
Claim 11
Dependent Claim
25 words
Walking sole according to any of the preceding claims, characterized in that the walking sole is made of a rigid material such as e.g. wood.
Claim 12
Dependent Claim
29 words
Walking sole according to claim 10, characterized in that the lower surface of the walking sole is provided with a thin layer of rubber or a similar material (14).
Claim 13
Dependent Claim
34 words
Walking sole according to any of the preceding claims, characterized in that it is provided with an ankle piece (15) and a foremost strap (16) for firmly connecting the walking sole with the foot.
References Cited (Backward Citations)
US3802424A
Cited
US3916538A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.