EP1097691B1 - Walking aid device - Google Patents
Walking aid device Download PDFInfo
- Publication number
- EP1097691B1 EP1097691B1 EP99308853A EP99308853A EP1097691B1 EP 1097691 B1 EP1097691 B1 EP 1097691B1 EP 99308853 A EP99308853 A EP 99308853A EP 99308853 A EP99308853 A EP 99308853A EP 1097691 B1 EP1097691 B1 EP 1097691B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ground
- engaging
- ball
- shank
- mounting member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/02—Crutches
- A61H3/0277—Shock absorbers therefor
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B9/00—Details
- A45B9/04—Ferrules or tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/02—Crutches
- A61H3/0288—Ferrules or tips therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/02—Crutches
- A61H3/0288—Ferrules or tips therefor
- A61H2003/0294—Ferrules or tips therefor comprising a ball-and-socket joint
Definitions
- This invention is concerned with a walking aid device, and relates in particular to a foot-like object that can be mounted at the end of a walking stick or crutch, or the like, so as to provide the User with greater stability and security.
- a walking aid such as a walking stick or a crutch is merely an elongate stick-like body with a pad or ring-like support at the upper, or proximal, end, to fit under the arm, and perhaps some sort of tip at the lower, or distal, end. Even a walking frame - a Zimmer frame - is in essence much the same.
- Such aids can be made of a variety of materials - wood or aluminium sticks with rubber tips are common - but a favourite combination for a crutch/stick is a rigid aluminium tube with a rubber grommet on the ground-engaging end and a fixed hand grip up towards the opposite end (which is usually either bifurcated to provide support for a pad that fits into the armpit or has a semi-ring at the top which fits around the User's upper arm).
- the invention suggests, for use with a walking aid, a ground-engaging device which is like a shin-ankle-foot combination; it has a shin-like mounting member (to be carried by or adapted to be mounted on the shank of the aid) and a terminal ground-engaging foot-like member connected to the shin by a ball-and-socket coupling that will permit a limited degree of flexing of the foot about the axis of the shank, the coupling's ball being fixedly secured to the shin and being retained within a socket in the foot in which there is a ball-supporting plunger resiliently biassed towards the ball so as to provide a degree of shock absorbency.
- the present invention provides a ground-engaging device to be attached to the end of a crutch or other walking aid for a disabled person, the crutch or other aid being of the type having a longitudinally-extended shank onto the distal end of which the ground-engaging device can be mounted, which device comprises:
- the invention relates to a ground-engaging device to be attached to the end of a crutch or other walking aid for a disabled person.
- This walking aid can be of any sort provided it has a longitudinally-extended shank onto the distal end of which the ground-engaging device can be mounted, but for the most part it will be a stick or a crutch.
- the ground-engaging device of the invention includes a mounting member mountable on the shank of the walking aid.
- the like ground-engaging members known in the Art can be affixed in a number of ways - as a sleeve fitting outside the end of the shank, or as a rod fitting inside the shank end; for the invention, the mounting member preferably comprises a sleeve member, and while this sleeve member can be a screw or other fit on the shank most preferably it is a push fit - that is to say, a "friction" fit.
- the mounting member carries coupling means in the form of a ball joint the ball of which is fixedly attached to the mounting member and is rotatably retained within the socket in the ground-engaging member - that is to say, the mounting member carries a distally-projecting ball which engages as a captive fit within a corresponding socket in the proximal end of the ground engaging member.
- One way of retaining the ball within the socket is by means of a split retaining cap, which may be attached to the ground engaging member by any suitable means, such as retaining screws or bolts.
- a more convenient way is to form the entire ground-engaging member as two suitably-shaped halves - the member being "split" from top to bottom (longitudinally) - which are then put together to hold the ball captive therebetween.
- the two halves desirably each have location means (such as projecting pins in one mating with corresponding recesses in the other) whereby they can be correctly positioned with respect to each other, and can be glued, screwed or - and preferably - welded together (most suitable plastics, such as nylon [NYLON is a Registered Trademark], can be welded as here required).
- the two halves can be held together with one or more small circlip device.
- the ground-engaging member of the invention's device contains - within the ball-retaining socket - bias means - typically a spring co-operating with a plunger/piston in actual contact with the ball - for ensuring a frictional engagement of the ball in the socket.
- This bias means also provides a measure of shock absorbency when the ground-engaging member strikes the ground.
- ground-engaging member does in fact directly engage the ground, most preferably its distal end carries a rubber or similar pad to provide a friction surface for secure ground engagement.
- one or other - or both - of the ground-engaging member and the mounting member provided with means for limiting the extent of flexing of the one member relative to the other.
- the means for limiting the extent of relative flexing or pivoting can take one or other of several forms. For example, it can take the form of inter-engaging chamfers or tapers on the opposed faces of the mounting member and ground-engaging member. Alternatively, the opposed faces of these members may carry axially-projecting stocks against which the other member bears as the ground engaging member pivots or flexes.
- the ground-engaging member can be provided with a sleeve which extends axially to encompass at least part of the mounting member and/or the shank, and the clearance between the inner wall of the sleeve and the outer wall of the shank or mounting member permits flexing or pivoting of the ground engaging member until the sleeve engages the shank or mounting member.
- the device of the invention preferably has radial symmetry, and the ground engaging member can flex or pivot through an angle of 5 to 20 degrees about the longitudinal axis of the shank in all directions.
- the ground-engaging device of the invention is one which, by virtue of its ball-joint flexible coupling always sits flat to the engaging ground surface even on a compound angle, and which, because of its spring loading, has and an inbuilt shock-absorbing feature.
- the walking aid of Figure 1 is a crutch of the type having an elongate shank (11) at the top - proximal - end is a half-ring arm support (12) below which is a fixed handle (13), and having at the bottom - distal - end a ground-engaging device (generally 14) of the invention.
- the shank is "telescopic" - it is in two parts (upper: 11 u , and lower: 11 l ) mounted with the lower inside the upper and fixable therein using pins (not shown) through corresponding holes (as 15).
- the ground-engaging device 14 - shown in detail in Figure 2 - has a sleeve-like mounting member (16) mounted onto a ground-engaging member (17) by way of a ball joint flexible coupling (see Figure 2).
- the walking aid is show in engagement with the ground (18: at an angle), with the dashed view (19) indicating how far the crutch may lean and yet still have complete ground contact.
- FIG. 2 shows the details of the ground-engaging device of the invention.
- the device has a sleeve-like mounting member 16 within which can be received the distal end of the walking aid's shank (not shown), and at the distal end of which sleeve is the ball (21) of a ball joint.
- the ball fits into a socket (22) in the proximal end of a ground-engaging member 17, and is held therein by a split retaining cap (23) secured in place by screws (as 24).
- a shaped plunger/piston (25) that is urged into frictional engagement with the ball 21 by a spring (26) located in an extension (27) of the socket 22.
- the plunger 25 can be pushed down against the spring 26, so providing the required degree of resilience and shock absorbency.
- ground-engaging member 17 On the actual distal end of the ground-engaging member 17 is a non-slip ground-engaging pad (28).
- FIG. 3 shows the details of an alternative form of ground-engaging member for use in the device of the invention.
- the ground-engaging member (37) is "split" from top to bottom (horizontally, as actually depicted here) into two like parts (37 u ,37 l ), which fit together using a number of locating pins/recesses (as 39) to define a ball-retaing socket (22) in the proximal end.
- the two halves are here welded together.
- a shaped plunger/piston 25 that is urged into frictional engagement with the ball 21 (not shown in Figure 3) by a spring 26 located in an extension 27 of the socket 22, and on the actual distal end of the ground-engaging member 17 is a non-slip ground-engaging pad 28.
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Rehabilitation Tools (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
- Manipulator (AREA)
Abstract
Description
- This invention is concerned with a walking aid device, and relates in particular to a foot-like object that can be mounted at the end of a walking stick or crutch, or the like, so as to provide the User with greater stability and security.
- In its most basic form a walking aid such as a walking stick or a crutch is merely an elongate stick-like body with a pad or ring-like support at the upper, or proximal, end, to fit under the arm, and perhaps some sort of tip at the lower, or distal, end. Even a walking frame - a Zimmer frame - is in essence much the same. Such aids can be made of a variety of materials - wood or aluminium sticks with rubber tips are common - but a favourite combination for a crutch/stick is a rigid aluminium tube with a rubber grommet on the ground-engaging end and a fixed hand grip up towards the opposite end (which is usually either bifurcated to provide support for a pad that fits into the armpit or has a semi-ring at the top which fits around the User's upper arm).
- The basic type of stick or crutch walking aid is not always easy for its User to utilise, particularly when travelling over ground that is rough, with a surface at any one of a number of angles other than horizontal. Unless wielded with care and skill, it is all too easy for the tip of the crutch or stick to skid across the ground, the User perhaps falling over. This problem has been recognised by many people in the past, for there are a large number of earlier Patent Specifications that describe devices, rather like a combination of shin, angle joint and foot, that can be secured to the distal end of the crutch or stick to provide a more secure footing. Such a ground engaging is disclosed in US-A-2 453 742. These earlier efforts to solve the problem have not been entirely satisfactory - often they are complicated to make, and are not very good from either an engineering or a use point of view - and the present invention proposes a new, and much simpler, foot-like device that provides the required degree of usefulness and simplicity at an economic outlay. More specifically, the invention suggests, for use with a walking aid, a ground-engaging device which is like a shin-ankle-foot combination; it has a shin-like mounting member (to be carried by or adapted to be mounted on the shank of the aid) and a terminal ground-engaging foot-like member connected to the shin by a ball-and-socket coupling that will permit a limited degree of flexing of the foot about the axis of the shank, the coupling's ball being fixedly secured to the shin and being retained within a socket in the foot in which there is a ball-supporting plunger resiliently biassed towards the ball so as to provide a degree of shock absorbency.
- In one aspect, therefore, the present invention provides a ground-engaging device to be attached to the end of a crutch or other walking aid for a disabled person, the crutch or other aid being of the type having a longitudinally-extended shank onto the distal end of which the ground-engaging device can be mounted, which device comprises:
- a mounting member mountable on the shank, and
- a ground-engaging member connected to the mounting member by a coupling means that in use permits flexing of the ground-engaging member about
- the longitudinal axis of the shank; and wherein:
- the ground-engaging member incorporates a socket, and
- the coupling means is a ball joint the ball of which is fixedly attached to the mounting member and is rotatably retained within the socket in the ground-engaging member;
- resilient biassing means is disposed within the socket so as to engage with the ball and provide a measure of shock absorbency; and
- the ground-engaging member and/or the mounting member is/are provided with means for limiting the extent of flexing of the ground-engaging member relative to the mounting member.
-
- The invention relates to a ground-engaging device to be attached to the end of a crutch or other walking aid for a disabled person. This walking aid can be of any sort provided it has a longitudinally-extended shank onto the distal end of which the ground-engaging device can be mounted, but for the most part it will be a stick or a crutch.
- The ground-engaging device of the invention includes a mounting member mountable on the shank of the walking aid. The like ground-engaging members known in the Art can be affixed in a number of ways - as a sleeve fitting outside the end of the shank, or as a rod fitting inside the shank end; for the invention, the mounting member preferably comprises a sleeve member, and while this sleeve member can be a screw or other fit on the shank most preferably it is a push fit - that is to say, a "friction" fit.
- In the device of the invention the mounting member carries coupling means in the form of a ball joint the ball of which is fixedly attached to the mounting member and is rotatably retained within the socket in the ground-engaging member - that is to say, the mounting member carries a distally-projecting ball which engages as a captive fit within a corresponding socket in the proximal end of the ground engaging member. One way of retaining the ball within the socket is by means of a split retaining cap, which may be attached to the ground engaging member by any suitable means, such as retaining screws or bolts. A more convenient way, however, is to form the entire ground-engaging member as two suitably-shaped halves - the member being "split" from top to bottom (longitudinally) - which are then put together to hold the ball captive therebetween. The two halves desirably each have location means (such as projecting pins in one mating with corresponding recesses in the other) whereby they can be correctly positioned with respect to each other, and can be glued, screwed or - and preferably - welded together (most suitable plastics, such as nylon [NYLON is a Registered Trademark], can be welded as here required). Alternatively, the two halves can be held together with one or more small circlip device.
- The ground-engaging member of the invention's device contains - within the ball-retaining socket - bias means - typically a spring co-operating with a plunger/piston in actual contact with the ball - for ensuring a frictional engagement of the ball in the socket. This bias means also provides a measure of shock absorbency when the ground-engaging member strikes the ground.
- Although the ground-engaging member does in fact directly engage the ground, most preferably its distal end carries a rubber or similar pad to provide a friction surface for secure ground engagement.
- In the invention's device one or other - or both - of the ground-engaging member and the mounting member provided with means for limiting the extent of flexing of the one member relative to the other. The means for limiting the extent of relative flexing or pivoting can take one or other of several forms. For example, it can take the form of inter-engaging chamfers or tapers on the opposed faces of the mounting member and ground-engaging member. Alternatively, the opposed faces of these members may carry axially-projecting stocks against which the other member bears as the ground engaging member pivots or flexes. In a further alternate, the ground-engaging member can be provided with a sleeve which extends axially to encompass at least part of the mounting member and/or the shank, and the clearance between the inner wall of the sleeve and the outer wall of the shank or mounting member permits flexing or pivoting of the ground engaging member until the sleeve engages the shank or mounting member.
- The device of the invention preferably has radial symmetry, and the ground engaging member can flex or pivot through an angle of 5 to 20 degrees about the longitudinal axis of the shank in all directions.
- It will be seen that the ground-engaging device of the invention is one which, by virtue of its ball-joint flexible coupling always sits flat to the engaging ground surface even on a compound angle, and which, because of its spring loading, has and an inbuilt shock-absorbing feature.
- An embodiment of the invention is now described, though by way of illustration only, with reference to the accompanying diagrammatic Drawings in which:
- Figure 1
- shows in side view an example of a walking aid incorporating a ground-engaging device of the invention;
- Figure 2
- shows a cross-section through the device itself; and
- Figure 3
- shows a cross-section through an alternative ground-engaging member for use in the invention.
- The walking aid of Figure 1 is a crutch of the type having an elongate shank (11) at the top - proximal - end is a half-ring arm support (12) below which is a fixed handle (13), and having at the bottom - distal - end a ground-engaging device (generally 14) of the invention.
- The shank is "telescopic" - it is in two parts (upper: 11u, and lower: 11l) mounted with the lower inside the upper and fixable therein using pins (not shown) through corresponding holes (as 15).
- The ground-engaging device 14 - shown in detail in Figure 2 - has a sleeve-like mounting member (16) mounted onto a ground-engaging member (17) by way of a ball joint flexible coupling (see Figure 2).
- The walking aid is show in engagement with the ground (18: at an angle), with the dashed view (19) indicating how far the crutch may lean and yet still have complete ground contact.
- Figure 2 shows the details of the ground-engaging device of the invention.
- The device has a sleeve-
like mounting member 16 within which can be received the distal end of the walking aid's shank (not shown), and at the distal end of which sleeve is the ball (21) of a ball joint. The ball fits into a socket (22) in the proximal end of a ground-engaging member 17, and is held therein by a split retaining cap (23) secured in place by screws (as 24). - Within the socket is a shaped plunger/piston (25) that is urged into frictional engagement with the ball 21 by a spring (26) located in an extension (27) of the
socket 22. As can be seen, theplunger 25 can be pushed down against thespring 26, so providing the required degree of resilience and shock absorbency. - On the actual distal end of the ground-
engaging member 17 is a non-slip ground-engaging pad (28). - Figure 3 shows the details of an alternative form of ground-engaging member for use in the device of the invention.
- The ground-engaging member (37) is "split" from top to bottom (horizontally, as actually depicted here) into two like parts (37u,37l), which fit together using a number of locating pins/recesses (as 39) to define a ball-retaing socket (22) in the proximal end. The two halves are here welded together.
- As in the version of Figure 2, within the
socket 22 is a shaped plunger/piston 25 that is urged into frictional engagement with the ball 21 (not shown in Figure 3) by aspring 26 located in anextension 27 of thesocket 22, and on the actual distal end of the ground-engaging member 17 is a non-slip ground-engaging pad 28.
Claims (9)
- A ground-engaging device (14) to be attached to the end of a crutch or other walking aid for a disabled person, the crutch or other aid having a longitudinally-extended shank (11) onto the distal end of which the ground-engaging device (14) can be mounted, which device comprises:a mounting member (16) mountable on the shank (11), anda ground-engaging member (17) connected to the mounting member by a coupling means (21) that in use permits flexing of the ground-engaging member about the longitudinal axis of the shank (11) the ground-engaging member (17) and/or the mounting member (16) is/are provided with means for limiting the extent of flexing of the ground-engaging member relative to the mounting member;the ground-engaging member (17) incorporates a socket (22), andthe coupling means (21) is a ball joint, the ball (21) of which is fixedly attached to the mounting member (16) and is rotatably retained within the socket (22) in the ground-engaging member (17);resilient biasing means (26) is disposed within the socket (22,27) so as to engage with the ball (21) and provide a measure of shock absorbency; and
- A ground-engaging device as claimed in Claim 1, wherein the mounting member (16) comprises a sleeve member.
- A ground-engaging device as claimed in Claim 2, wherein the sleeve member (16) is a push fit on the shank (11).
- A ground-engaging device as claimed in any of the preceding Claims, wherein the ground-engaging member (17,37) is formed as two suitably-shaped longitudinal halves (37u,37l) which are then put together to hold the ball (22) captive therebetween.
- A ground-engaging device as claimed in Claim 4, wherein the two halves (37u,37l) are welded together.
- A ground-engaging device as claimed in any of the preceding Claims, wherein the bias means (25,26) in the ball-retaining socket (22) is a spring (26) co-operating with a plunger/piston (25) in actual contact with the ball (21).
- A ground-engaging device as claimed in any of the preceding Claims, wherein the ground-engaging member (17) carries a rubber or similar pad (28) to provide a friction surface for secure ground engagement.
- A ground-engaging device as claimed in Claim 1, wherein the means for limiting the extent of relative flexing of the ground-engaging member (17) and the mounting member (16) takes the form of inter-engaging chamfers or tapers on the opposed faces of the mounting member and ground-engaging member.
- A ground-engaging device as claimed in any of the preceding Claims, wherein the ground-engaging member (17) can flex or pivot through an angle of 5 to 20 degrees about the longitudinal axis of the shank (11) in all directions.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9816302A GB2339682B (en) | 1998-07-27 | 1998-07-27 | Walking aid device |
EP99308853A EP1097691B1 (en) | 1998-07-27 | 1999-11-05 | Walking aid device |
DE69911970T DE69911970T2 (en) | 1998-07-27 | 1999-11-05 | Walking assist device |
AT99308853T ATE251442T1 (en) | 1998-07-27 | 1999-11-05 | WALKING ASSISTANCE DEVICE |
ES99308853T ES2212475T3 (en) | 1998-07-27 | 1999-11-05 | HELP DEVICE FOR WALKING. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9816302A GB2339682B (en) | 1998-07-27 | 1998-07-27 | Walking aid device |
EP99308853A EP1097691B1 (en) | 1998-07-27 | 1999-11-05 | Walking aid device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1097691A1 EP1097691A1 (en) | 2001-05-09 |
EP1097691B1 true EP1097691B1 (en) | 2003-10-08 |
Family
ID=26153597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99308853A Expired - Lifetime EP1097691B1 (en) | 1998-07-27 | 1999-11-05 | Walking aid device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1097691B1 (en) |
AT (1) | ATE251442T1 (en) |
DE (1) | DE69911970T2 (en) |
ES (1) | ES2212475T3 (en) |
GB (1) | GB2339682B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0717167D0 (en) | 2007-09-04 | 2007-10-17 | Goodwin David M | Walking aids |
WO2010069070A1 (en) * | 2008-12-15 | 2010-06-24 | Sidestix Ventures Inc. | Assistive mobility device |
DE202017001390U1 (en) | 2017-03-15 | 2017-03-22 | Semen Schofmann | Walking stick or forearm crutches |
DE102017002502B3 (en) | 2017-03-15 | 2018-05-17 | Semen Schofmann | Walking stick or forearm crutches |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6006C (en) * | 1919-06-03 | |||
GB196117A (en) * | 1922-01-26 | 1923-04-19 | Harry Rivett | Improvements relating to crutches, walking sticks and the like |
US2453742A (en) * | 1945-03-23 | 1948-11-16 | Henry B Bowen | Terminal attachment for crutches and the like |
US3741226A (en) * | 1971-09-30 | 1973-06-26 | Lamico Inc | Crutch tip with insert |
GB1373593A (en) * | 1973-03-20 | 1974-11-13 | Thrift P A | Glide for use on articles of furniture or the like |
DE3004028C2 (en) * | 1980-02-05 | 1983-07-28 | Josef 5000 Köln Lottner | Anti-skid body for the stick of a walking aid |
DE3039324A1 (en) * | 1980-10-17 | 1982-09-30 | Holger G. 7750 Konstanz Weber | FOOT PART FOR SECURITY WALKING OR KRUECKSTOCK |
US4510957A (en) * | 1981-08-05 | 1985-04-16 | S & F Orthopadietechnik Gmbh | Resilient support foot for walking aids, particularly crutches |
FR2614529A1 (en) * | 1987-04-29 | 1988-11-04 | Levasseur Daniel | Walking aid of the elbow crutch type or the like |
GB2270627A (en) * | 1992-09-17 | 1994-03-23 | Alan Cunnick | Walking aid |
FR2715559B1 (en) * | 1994-01-31 | 1996-03-29 | Daniel Levasseur | Safety tip for canes, crutches or the like. |
-
1998
- 1998-07-27 GB GB9816302A patent/GB2339682B/en not_active Expired - Fee Related
-
1999
- 1999-11-05 DE DE69911970T patent/DE69911970T2/en not_active Expired - Fee Related
- 1999-11-05 ES ES99308853T patent/ES2212475T3/en not_active Expired - Lifetime
- 1999-11-05 EP EP99308853A patent/EP1097691B1/en not_active Expired - Lifetime
- 1999-11-05 AT AT99308853T patent/ATE251442T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2339682A (en) | 2000-02-09 |
GB2339682B (en) | 2000-06-28 |
DE69911970T2 (en) | 2004-09-09 |
GB9816302D0 (en) | 1998-09-23 |
ES2212475T3 (en) | 2004-07-16 |
EP1097691A1 (en) | 2001-05-09 |
DE69911970D1 (en) | 2003-11-13 |
ATE251442T1 (en) | 2003-10-15 |
GB2339682A8 (en) | 2000-03-14 |
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