US2300726A - Attachments to crutches - Google Patents

Attachments to crutches Download PDF

Info

Publication number
US2300726A
US2300726A US411752A US41175241A US2300726A US 2300726 A US2300726 A US 2300726A US 411752 A US411752 A US 411752A US 41175241 A US41175241 A US 41175241A US 2300726 A US2300726 A US 2300726A
Authority
US
United States
Prior art keywords
ferrule
crutches
plunger
attachments
threaded
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
Application number
US411752A
Inventor
Douglas Philip Faircleugh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2300726A publication Critical patent/US2300726A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H3/00Appliances for aiding patients or disabled persons to walk about
    • A61H3/02Crutches
    • A61H3/0277Shock absorbers therefor

Definitions

  • My invention relates to attachments to crutches, a principal object of the invention being to provide arrangements of the character herewithin described, by the use of which considerably greater comfort may be derived by the user, together with a substantial reduction in the shock caused each time the crutches strike the ground.
  • a further object of my invention is to provide in crutches, arrangements by the use of which greater speed of locomotion becomes possible, or in other words, longer strides with the use of crutches tted with my hereinafter described arrangement.
  • a further object of my invention is to provide a ferrule attachment, which is economical to manufacture, easy to attach and which will not become out of order as and for the above purpose.
  • Figure 1 is a sectional side elevation of my invention, showing the same in situ on the crutch.
  • Figure 2 is a modified form of my invention using a different type of a plunger.
  • My attachment I comprises a hollow openended and tapered sheath 4 secured to the forked shank by means of the bolts 5.
  • the elongated aperture 6 at the lower end of the sheath is internally screw-threaded as at 'I to receive the upper, externally screw-threaded shank of a plunger 8.
  • a ferrule I0 within a ferrule I0, and is provided'with an axial, cylindrical cavity II.
  • a pair of compression springs I2 and I3 of different resiliencies are positioned in this cavity and extend between the plunger 9 and the lower wall I4 of the ferrule.
  • the two dilerent diameters of the plunger 8 provide an annular shoulder I5 designed to engage the lower annular perimeter of a boss I6 when thesprings I2 and I3 are in relaxed position.
  • the boss is provided at the upper end thereof with an outwardly projecting annular flange Il, below which it is externally screwthreaded, as at I8, to engage the internally screwthreaded upper end I9 of the ferrule III.
  • the lower end 22 of the plunger is of a reduced diameter and extends into a coil spring 23, which in turn is positioned within the cavity II of the ferrule I0.
  • this embodiment is similar to that shown in Figure 1, including the provision of a conventional rubber ferrule 24 as will clearly be apparent from the drawing.
  • Attachments to crutches comprising in combination, a hollow tapered sheath designed to encase the lower forked ends of crutches, the lower end of said sheath being apertured and internally screw-threaded, a plunger externally screw-threaded at the upper end thereof to engage the internally screw-threaded portion of said sheath, a ferrule, a coil spring therewithin, the upper end of said ferrule being internally screw-threaded, an externally screw-threaded boss engageable with the internally screw-threadof said ferrule, an external annular fiange adjacent the upper end of said boss and engageable with the upper perimeter of said ferrule, said plunger extending through said boss into said ferrule, the lower end of said plunger having an axial, cylindrical cavity formed therein to receive the upper end of said spring.
  • vboss engageable with the internally screw-threaded upper end of said ferrule, an external annular iiange adjacent the upper end of said boss and engageable with the upper perimeter of said ferrule, said plunger extending into said ferrule through said boss, a cylindrical block formed intermedially the length of said plunger and in frictional engagement with the inside wall of said ferrule, the lower end of said plunger extending into the upper end of said spring.

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)

Description

Nov. 3, 1942. 'p F. DOUGLAS-- ATTACHMENTS TO CRUTCHES Filed Sept. 20, 1941 Patented Nov. 3, 1942 Philip FaircleughDougla s, Carman, Manitoba,
Canad Application 3 Claims.
My invention relates to attachments to crutches, a principal object of the invention being to provide arrangements of the character herewithin described, by the use of which considerably greater comfort may be derived by the user, together with a substantial reduction in the shock caused each time the crutches strike the ground.
A further object of my invention is to provide in crutches, arrangements by the use of which greater speed of locomotion becomes possible, or in other words, longer strides with the use of crutches tted with my hereinafter described arrangement.
A further object of my invention is to provide a ferrule attachment, which is economical to manufacture, easy to attach and which will not become out of order as and for the above purpose.
With the above more important objects in View and such other minor objects as may appear as the specification proceeds, my invention consists essentially in the arrangement and construction of parts all as hereinafter more particularly described, reference being had to the accompanying drawing, in which:
Figure 1 is a sectional side elevation of my invention, showing the same in situ on the crutch.
Figure 2 is a modified form of my invention using a different type of a plunger.
In the drawing like characters of reference indicate corresponding parts in the different figures.
It is well known that considerable discomfort is experienced by cripples who are obliged to resort to the use of the crutches, through the unyielding construction thereof and that the speed, freedom of movement and safety of such persons are greatly hampered by expectations of a shock which is transmitted to their body every time a step with the crutches is taken.
My arrangements herewithin described and illustrated in the accompanying drawing are therefore designed to overcome the above objections, and referring lrst to my ferrule attachment I shown in Figure 1, this will clearly be seen as attached to the crutch 2 below the junction of the forked end y3. In this context I would remark that generally speaking, it will be found necessary to cut oi a portion of this end of the crutch below the junction of the forks.
My attachment I comprises a hollow openended and tapered sheath 4 secured to the forked shank by means of the bolts 5. The elongated aperture 6 at the lower end of the sheath is internally screw-threaded as at 'I to receive the upper, externally screw-threaded shank of a plunger 8.
september 2o, 1941, serial No. 411,752
In Canada September 19, -1940 (Cl. 13S-50) diameteras at 9, designed for a free sliding fit.
within a ferrule I0, and is provided'with an axial, cylindrical cavity II. A pair of compression springs I2 and I3 of different resiliencies are positioned in this cavity and extend between the plunger 9 and the lower wall I4 of the ferrule.
The two dilerent diameters of the plunger 8 provide an annular shoulder I5 designed to engage the lower annular perimeter of a boss I6 when thesprings I2 and I3 are in relaxed position. lThe boss is provided at the upper end thereof with an outwardly projecting annular flange Il, below which it is externally screwthreaded, as at I8, to engage the internally screwthreaded upper end I9 of the ferrule III.
Referring now to the accompanying Figure 2, a modified arrangement of my invention will be seen, in which the plunger 8 is provided with a cylindrical portion 2i) of an enlarged diameter, the piston surface 2I of which bears against the inside wall of the ferrule I0.
The lower end 22 of the plunger is of a reduced diameter and extends into a coil spring 23, which in turn is positioned within the cavity II of the ferrule I0. In all other respects this embodiment is similar to that shown in Figure 1, including the provision of a conventional rubber ferrule 24 as will clearly be apparent from the drawing.
From the foregoing will be seen that when the weight of the user is exerting a downward pressure upon the crutch, the springs I2 and I3 will become compressed, so that in the action of walking with crutches tted with my ferrule attachment, the tendency of the springs to relax will greatly assist the user in his motion.
I also Wish to point out that any possibility of wobble in my ferrule attachment is eliminated by the piston surface 2l which being of substantial length and in engagement with the inner wall of the ferrule III prevents any side play of the plunger 8.
Since various modifications can be made in my invention as hereinabove described and as illustrated in the accompanying drawing, and many apparently widely different embodiments of same made within the scope of thek claims Without departing from such spirit and scope, it is intended that all matter contained in the accompanying specification and drawing shall be interpreted as illustrative only and not in a limiting sense and I desire only such limitations placed thereon as are specifically expressed in the accompanying claims.
ed upper end What I claim as my invention is:
1. Attachments to crutches comprising in combination, a hollow tapered sheath designed to encase the lower forked ends of crutches, the lower end of said sheath being apertured and internally screw-threaded, a plunger externally screw-threaded at the upper end thereof to engage the internally screw-threaded portion of said sheath, a ferrule, a coil spring therewithin, the upper end of said ferrule being internally screw-threaded, an externally screw-threaded boss engageable with the internally screw-threadof said ferrule, an external annular fiange adjacent the upper end of said boss and engageable with the upper perimeter of said ferrule, said plunger extending through said boss into said ferrule, the lower end of said plunger having an axial, cylindrical cavity formed therein to receive the upper end of said spring.
2. The device as deined in claim 1 in which ,the lower end of said plunger is in irictional engagement with the inside wall of said ferrule.
vboss engageable with the internally screw-threaded upper end of said ferrule, an external annular iiange adjacent the upper end of said boss and engageable with the upper perimeter of said ferrule, said plunger extending into said ferrule through said boss, a cylindrical block formed intermedially the length of said plunger and in frictional engagement with the inside wall of said ferrule, the lower end of said plunger extending into the upper end of said spring.
PHILIP F. DOUGLAS.
US411752A 1940-09-19 1941-09-20 Attachments to crutches Expired - Lifetime US2300726A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2300726X 1940-09-19

Publications (1)

Publication Number Publication Date
US2300726A true US2300726A (en) 1942-11-03

Family

ID=4175665

Family Applications (1)

Application Number Title Priority Date Filing Date
US411752A Expired - Lifetime US2300726A (en) 1940-09-19 1941-09-20 Attachments to crutches

Country Status (1)

Country Link
US (1) US2300726A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899968A (en) * 1959-08-18 reichenbach
GB2355662A (en) * 1999-10-26 2001-05-02 Stephen George Sutton Anatomical crutch
US20040025918A1 (en) * 2002-08-06 2004-02-12 Jeremy Gin Mobility-aid apparatus and method having ground contact pad without intervening washer
EP1575474A2 (en) * 2002-08-06 2005-09-21 Hessa Medical, Inc. Mobility-aid apparatus and method
US20070144568A1 (en) * 2005-12-13 2007-06-28 University Of Maryland Crutch-like mobility assist device with rotatable footer assembly
US20150059816A1 (en) * 2012-04-26 2015-03-05 Kyung-Won Kim Hiking Stick

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899968A (en) * 1959-08-18 reichenbach
GB2355662A (en) * 1999-10-26 2001-05-02 Stephen George Sutton Anatomical crutch
US20040025918A1 (en) * 2002-08-06 2004-02-12 Jeremy Gin Mobility-aid apparatus and method having ground contact pad without intervening washer
EP1575474A2 (en) * 2002-08-06 2005-09-21 Hessa Medical, Inc. Mobility-aid apparatus and method
EP1575474A4 (en) * 2002-08-06 2007-08-15 Hessa Medical Inc Mobility-aid apparatus and method
US20070144568A1 (en) * 2005-12-13 2007-06-28 University Of Maryland Crutch-like mobility assist device with rotatable footer assembly
US7581556B2 (en) 2005-12-13 2009-09-01 University Of Maryland Crutch-like mobility assist device with rotatable footer assembly
US20150059816A1 (en) * 2012-04-26 2015-03-05 Kyung-Won Kim Hiking Stick

Similar Documents

Publication Publication Date Title
US2888022A (en) Shock absorber for orthopedic crutches
CA2552298C (en) Shock absorber crutch and shock absorber kit
US4061347A (en) Shock-absorbing ski pole grip
US2300726A (en) Attachments to crutches
US2397499A (en) Crutch tip construction
US1348531A (en) Foot for crutches, walking-sticks, ladders, and the like
US5699819A (en) Reduced impact cane
US2899968A (en) reichenbach
US1336844A (en) Crutch
US1406453A (en) Shock absorber for crutches and the like
US20160278490A1 (en) Lighted Cane With Shock Absorber
US790051A (en) Breast-pump.
US1314193A (en) George hipwood
US1548889A (en) Shock absorber for crutches
US1761502A (en) Shock-absorbing attachment for crutches
US2421959A (en) Blood extractor
US1684358A (en) Demountable brush
US2414758A (en) Crutch tip and cushioning means therefor
US1909337A (en) Resilient support
US1817829A (en) Crutch attachment
US20240245570A1 (en) Cane With Linear Adjustable Hydraulic Shock Absorber End
US1733430A (en) Crutch
WO2011048028A1 (en) A walking aid
EP1327468A1 (en) Shock-absorbing device for a walking or skiing pole
US1580295A (en) Adjustable resilient nonskid crutch