WO1993015626A1 - Canne a pointe extensible/escamotable - Google Patents

Canne a pointe extensible/escamotable Download PDF

Info

Publication number
WO1993015626A1
WO1993015626A1 PCT/CA1993/000053 CA9300053W WO9315626A1 WO 1993015626 A1 WO1993015626 A1 WO 1993015626A1 CA 9300053 W CA9300053 W CA 9300053W WO 9315626 A1 WO9315626 A1 WO 9315626A1
Authority
WO
WIPO (PCT)
Prior art keywords
orthopaedic
assistance device
mobility assistance
support means
trigger
Prior art date
Application number
PCT/CA1993/000053
Other languages
English (en)
Inventor
Stuart Lewis
Original Assignee
Stuart Lewis
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stuart Lewis filed Critical Stuart Lewis
Publication of WO1993015626A1 publication Critical patent/WO1993015626A1/fr

Links

Classifications

    • 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
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A45B2009/005—Shafts
    • A45B2009/007—Shafts of adjustable length, e.g. telescopic shafts

Definitions

  • This invention relates in general to walking aids, and more particularly to an adjustable length walking cane with retractable spike.
  • Prior art walking canes have been devised to address the aforenoted problems.
  • United States Patent 3,448,749 (Stark) discloses a cane with retractable spikes connected to a finger operated actuating lever via a pivot device.
  • a similar device is disclosed in United States Patent 2,682,275 (Eyrich) wherein the spike is trigger operated and spring loaded.
  • adjustable length canes are also known.
  • Such canes normally are provided with a telescoping shaft with aligned holes through the inner and outer shafts and suitable fastening means such as a spring pin for securing the telescoping tubes in predetermined orientation to establish the length of the cane.
  • an adjustable length cane is provided in combination with a trigger- operated, internally disposed spike.
  • the cane of the present invention is characterized by an orthopedically shaped handle for placing the user's hand directly over the weight supporting shaft to ensure balance and comfort.
  • the handle incorporates a plurality of structural ribs for spreading the weight load on the handle and directing the load toward the centre of the cane shaft.
  • An ergonomically placed trigger is provided for activating the internal spike mechanism so that when the spike is activated the trigger lies flush with the handle.
  • a novel internal structure is provided for accommodating both overall length adjustment of the cane in combination with the retractable spike function.
  • an orthopaedic mobility assistance device comprising: a) first support means; b) handle means connected to said first support means; c) trigger means mounted to said handle means, said trigger means being adapted to move selectively between a first position and a second position; d) second support means connected to said first support means at one end and having a ground engaging portion at opposite end for contacting a walking surface; e) retractable spike means adapted for selectively protruding from said ground engaging portion to contact said walking surface with increased gripping action than said ground engaging portion, and retracting within said ground engaging portion when said increased gripping action is not required; and f) connecting means between said trigger means and said retractable spike means for protruding said spike means from said ground engaging portion in response to said trigger means being moved to said first position and retracting said spike means into said ground engaging portion in response to said trigger means being moved to said second position.
  • Figure 1 shows an adjustable length cane with retractable spikes in accordance with the preferred embodiment
  • Figure 2 is a detailed perspective view of the handle portion of the cane with trigger retracted into the handle portion;
  • Figure 3 is a detailed perspective view of a ground engaging portion of the cane with projecting retractable spike
  • Figure 4 is a cross-sectional view of the cane according to the preferred embodiment
  • FIGS. 5A and 5B are detailed schematic views showing operation of the trigger mechanism according to the preferred embodiment
  • Figures 6A and 6B are detailed cross-sectional views showing a ground engaging portion of the cane and operation of the retractable spike, according to the preferred embodiment
  • Figures 7A and 7B are detailed cross-sectional views showing length adjusting means according to the present invention.
  • Figure 8 is a perspective view showing the structure and operation of the retractable spike according to the preferred embodiment.
  • the outward appearance of the height adjustable cane according to the present invention is shown with reference to Figures 1-3.
  • the cane comprises handle portion 1 connected to a first support member 5.
  • a second support member 7 is secured in telescopic arrangement with the first support member 5 and is provided with a ground engaging portion 9 at the base thereof.
  • the ground engaging portion 9 comprises a rubber boot which houses a retractable spike 11 (Figure 3).
  • the retractable spike 11 is operated by means of a trigger mechanism 13 so that in the position shown in Figure 1, the spike 11 is retracted within the ground engaging portion 9, and upon moving the trigger mechanism 13 into the position shown from Figure 2, the spike 11 is caused to project or protrude from the ground engaging portion 9.
  • a wrist strap 15 is provided for ease of carrying the cane when climbing stairs, or for hanging the cane by a coat peg, etc.
  • the handle portion 1 preferably comprises a first generally oblong portion 17 oriented substantially perpendicular to the first support member 5.
  • a second portion 19 of the handle 1 extends co-axially with the first support member 5 and arcs slightly to a rounded apex 21.
  • a reduced diameter portion 23 is provided intermediate the first generally oblong portion 17 and the second portion 19. The reduced diameter portion 23 is positioned over the first support member 5.
  • the internal supporting rib structure comprises a central rib 25 extending from a distal end of the first generally oblong portion 17 centrally therethrough to a surface of the second portion 19 opposite the distal end.
  • the second central rib 27 extends from a distal end of the second portion 19 adjacent the reduced diameter portion 23 centrally through the second portion toward the first support member 5.
  • the first central rib 25 and the second central rib 27 intersect perpendicularly at the focus of the rounded apex 21.
  • a plurality of additional ribs such as ribs 29, are connected to the first central rib 25 and the second central rib 27 so as to form triangles therewith, triangular construction of supporting ribs being stronger than rectangular or other geometric structures.
  • Connecting apparatus is provided between the trigger 13 and the retractable spike 11 for protruding the spike from the ground engaging portion 9 in response to the trigger 13 being moved from the position shown in Figure 5A to the position shown in Figure 5B.
  • this connecting apparatus comprises an actuator rod 31 connected to the trigger 13 and a cylindrical member 33 connected at one end to the rod 31 via a length adjusting threaded fitting 35, and at an opposite end to the retractable spike 11.
  • the trigger 13 comprises a generally C-shaped portion 36 connected at a base portion thereof to the handle 1 via a first pivot or hinge pin 37.
  • An extension 39 projects from the base of the C-shaped portion 36 on the opposite side of the first pivot 37.
  • a cantilever arm 41 is pivotally connected at one end to the extension 39 via spring pin 43 and at an opposite end to the actuator rod 31 via pivot 45.
  • the C-shaped portion 36 of trigger 13 is pulled via finger action upwardly from the position shown in Figure 5A to the position shown in Figure 5B.
  • the trigger 13 is pivoted from the position shown in Figure 5B to the position shown in Figure 5A by applying downward pressure on the distal end 38 of the C-shaped portion 36 of trigger 13.
  • the trigger 13 is held in place by a resilient latch comprising a catch mechanism 47 disposed within the second portion 19 of the handle 1, and a cooperatively shaped finger projection 51 from the extension 39.
  • the finger projection 51 is adapted to be releasably received within the catch mechanism 47.
  • the actuator rod 31 further comprises a threaded rod 53 which is connected to the rod 31 via force-fit engagement at a lower end thereof.
  • the spike 11 is embedded into the lowermost portion of the connection member 33, the threaded brass fitting
  • the connecting member 33 may be fabricated from injection molded plastic or other suitable material with a hollow core running through opposite quonset-shaped molded portions 54 for receiving the threaded rod 53.
  • the downward movement actuator rod 31 which is responsive to moving the trigger 13 from the position shown in Figure 5A to the position shown in Figure 5B, causes a downward movement in connection member 33 which, in turn, causes the spike 11 to protrude from the bottom of the ground engaging portion .
  • the trigger 13 is retracted so as to be flush with the handle 1, within a recess 55 ( Figures 4 and 5B) .
  • the injection molded cylindrical member 33 includes a slot 57 for receiving an inwardly directed detent 59 in the second tubular support member 7, as shown in detail with reference to Figure 6A and 6B.
  • the spike 11 is shown in the retracted position whereas in Figure 6B, the spike 11 is shown protruding from the ground engaging portion 9.
  • the mechanism for adjusting the length of the cane is shown in greater detail comprising a first aperture 61 in the second support member 7, a plurality of further apertures 63 in the first support member 5 and extending along a portion of the length thereof, and a pin 65 for insertion through a selected one of the plurality of apertures 63 and the aperture 61 for securing the second support member 7 to the first support member 5 against rotational and longitudinal movement in a selected one of the plurality of adjustable length positions.
  • a protective ring 8 is provided for covering and concealing the height adjustment pin 65 (see Figure 1) .
  • the pin 65 is removed and the support member 7 is rotated counterclockwise relative to the support member 5.
  • the rotational movement of support member 7 is translated to the inner connecting member 33 via the detent 59 and internal recess or slot 57.
  • the actuator rod 31 and threaded rod 53 are prevented from rotating by virtue of the rigid connection of trigger 13 to handle portion 1. Therefore, counterclockwise rotation of the connecting member 33 causes threaded brass bushing 35 to advance along the threads of stationary rod 53.
  • Rotation of the lower support member or tube 7 in a clockwise direction shortens the length of the cane by retracting the lower supporting member 7 into the surrounding upper supporting member 5.
  • the procedure for shortening the length of the cane is identical to the procedure discussed above in connection with lengthening the cane.
  • vibration absorbing rings 67 are provided intermediate the handle 13 and the first support means 7 ( Figure 4) . Furthermore, a detent 69 is provided in the upper end of lower support member 7 for maintaining proper alignment between the first support means 7 and cylindrical member 33.
  • a walking cane is provided with a retractable spike 11 for aiding the user in walking confidently over dry surfaces, hazardous ice, snow, wet grass, mud or other surfaces.
  • the orthopedically shaped handle 1 provides greater user balance and fits both small and large hands, including hands which suffer from arthritis.
  • the trigger may be easily reached and activated using only one finger while walking and even when wearing gloves.
  • Both the handle 1 and completely retractable trigger 13 are made from light and durable material.
  • the spike 11 may be completely retracted when not in use, to prevent harm to carpeting or wooden floors.
  • the aluminum shaft of the cane provided by lower tube 7 and upper tube 5 is completely height adjustable to suit any person.
  • the cane of the present invention incorporates very few moving parts resulting in higher reliability and low maintenance requirements.

Landscapes

  • Rehabilitation Tools (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)

Abstract

Dispositif orthopédique d'assistance à la mobilité, comprenant un premier moyen de support; une poignée (1) reliée au premier moyen de support (5); un moyen de déclenchement (13) monté sur la poignée (1) et conçu pour se déplacer sélectivement entre une première et une seconde position; un second moyen de support (7) relié au premier (5) à une extrémité et comprenant une partie (9) prenant appui sur le sol à l'extrémité opposée afin d'entrer en contact avec la surface sur laquelle on marche; une pointe escamotable (11) conçue pour faire sélectivement saillie à partir de la partie (9) prenant appui sur le sol, pour entrer en contact avec la surface de marche en s'y aggrippant plus fortement que ladite partie (9), et pour être escamotée à l'intérieur de cette dernière lorsqu'un tel contact n'est plus requis; et des moyens d'accouplement entre le moyen de déclenchement (13) et la pointe escamotable (11) servant à prolonger celle-ci de la partie (9) prenant appui sur le sol lorsque le moyen de déclenchement (13) est déplacé vers la première position, et à escamoter la pointe (11) à l'intérieur de ladite partie (9) lorsque le moyen de déclenchement (13) est déplacé vers la seconde position.
PCT/CA1993/000053 1992-02-10 1993-02-10 Canne a pointe extensible/escamotable WO1993015626A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929202724A GB9202724D0 (en) 1992-02-10 1992-02-10 Cane with extendable/retractable spike
GB9202724.2 1992-02-10

Publications (1)

Publication Number Publication Date
WO1993015626A1 true WO1993015626A1 (fr) 1993-08-19

Family

ID=10710085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1993/000053 WO1993015626A1 (fr) 1992-02-10 1993-02-10 Canne a pointe extensible/escamotable

Country Status (3)

Country Link
CA (1) CA2082115A1 (fr)
GB (1) GB9202724D0 (fr)
WO (1) WO1993015626A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19508794C1 (de) * 1995-03-15 1996-02-22 Hans Weber Blinden-Langstock
EP0978298A1 (fr) * 1998-08-06 2000-02-09 Exel Oy Canne
EP2727489A1 (fr) 2012-11-06 2014-05-07 Seppo Sellgren Mécanisme d'antidérapage pour dispositif d'aide à la marche
WO2016061364A1 (fr) * 2014-10-15 2016-04-21 Kimberly-Clark Worldwide, Inc. Canne
US9414656B1 (en) * 2015-04-07 2016-08-16 Vernon Greene Cane with extendable spikes
WO2018131014A3 (fr) * 2018-04-16 2018-10-04 Universidad De Panamá Bâton producteur d'empreinte

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8800578B2 (en) 2012-07-12 2014-08-12 Donald William Jackson Ice rescue walking staff

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682275A (en) * 1948-12-03 1954-06-29 George O Eyrich Traction attachment for canes, crutches, and the like
US3448749A (en) * 1968-05-22 1969-06-10 Walter Stark Non-skid attachment for the ground-engaging end of canes,crutches,and the like
CA863678A (en) * 1969-06-17 1971-02-16 J. Armstrong Ewart Crutch legs
DE2124824A1 (de) * 1971-05-19 1972-11-30 Aßbeck, Max, 8386 Reisbach Mechanisch ein- und ausführbare Metellspitze in einem Gehstock
DE2140450A1 (de) * 1971-08-12 1973-03-15 Josef Wimmer Kombistock fuer wander- berg- und skisport-freunde
FR2516363A1 (fr) * 1981-11-16 1983-05-20 Fiamma Spa Canne, notamment pour personnes affaiblies
US4434808A (en) * 1982-06-18 1984-03-06 Burak Mark G Anti-skid device for a cane, crutch, or the like
DE3713252A1 (de) * 1987-04-18 1988-11-03 Josef Kellerer In abschnitte zerlegbarer stock, insb. blindenlangstock
WO1989001747A1 (fr) * 1987-08-25 1989-03-09 Gunvor Karlin Canne reglable en longueur
DE3905319A1 (de) * 1989-02-21 1990-08-23 Franz Mackl Gehstuetze
US4977914A (en) * 1989-07-20 1990-12-18 Smerker Charles W Slip resistent apparatus for canes, crutches and walkers

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682275A (en) * 1948-12-03 1954-06-29 George O Eyrich Traction attachment for canes, crutches, and the like
US3448749A (en) * 1968-05-22 1969-06-10 Walter Stark Non-skid attachment for the ground-engaging end of canes,crutches,and the like
CA863678A (en) * 1969-06-17 1971-02-16 J. Armstrong Ewart Crutch legs
DE2124824A1 (de) * 1971-05-19 1972-11-30 Aßbeck, Max, 8386 Reisbach Mechanisch ein- und ausführbare Metellspitze in einem Gehstock
DE2140450A1 (de) * 1971-08-12 1973-03-15 Josef Wimmer Kombistock fuer wander- berg- und skisport-freunde
FR2516363A1 (fr) * 1981-11-16 1983-05-20 Fiamma Spa Canne, notamment pour personnes affaiblies
US4434808A (en) * 1982-06-18 1984-03-06 Burak Mark G Anti-skid device for a cane, crutch, or the like
DE3713252A1 (de) * 1987-04-18 1988-11-03 Josef Kellerer In abschnitte zerlegbarer stock, insb. blindenlangstock
WO1989001747A1 (fr) * 1987-08-25 1989-03-09 Gunvor Karlin Canne reglable en longueur
DE3905319A1 (de) * 1989-02-21 1990-08-23 Franz Mackl Gehstuetze
US4977914A (en) * 1989-07-20 1990-12-18 Smerker Charles W Slip resistent apparatus for canes, crutches and walkers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19508794C1 (de) * 1995-03-15 1996-02-22 Hans Weber Blinden-Langstock
EP0978298A1 (fr) * 1998-08-06 2000-02-09 Exel Oy Canne
EP2727489A1 (fr) 2012-11-06 2014-05-07 Seppo Sellgren Mécanisme d'antidérapage pour dispositif d'aide à la marche
WO2016061364A1 (fr) * 2014-10-15 2016-04-21 Kimberly-Clark Worldwide, Inc. Canne
US10092067B2 (en) 2014-10-15 2018-10-09 Michael Graves Design Group, Inc. Walking stick
US9414656B1 (en) * 2015-04-07 2016-08-16 Vernon Greene Cane with extendable spikes
WO2018131014A3 (fr) * 2018-04-16 2018-10-04 Universidad De Panamá Bâton producteur d'empreinte

Also Published As

Publication number Publication date
GB9202724D0 (en) 1992-03-25
CA2082115A1 (fr) 1993-08-11

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