US2711183A - Crutch - Google Patents

Crutch Download PDF

Info

Publication number
US2711183A
US2711183A US222419A US22241951A US2711183A US 2711183 A US2711183 A US 2711183A US 222419 A US222419 A US 222419A US 22241951 A US22241951 A US 22241951A US 2711183 A US2711183 A US 2711183A
Authority
US
United States
Prior art keywords
member
upper
crutch
tubular
tubular 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
Application number
US222419A
Inventor
Jr Anders Rudolf Lofstrand
Original Assignee
Lofstrand Company
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 Lofstrand Company filed Critical Lofstrand Company
Priority to US222419A priority Critical patent/US2711183A/en
Application granted granted Critical
Publication of US2711183A publication Critical patent/US2711183A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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

Description

June 21, 1955 A. R. LOFSTRAND, JR,

CRUTCH Filed April 25; 1951' fin is 76 RLo/sZranalJr:

ane

INVENTOR BY MQLM ATTORNEYS United States Patent CRUTCH Anders Rudolf Lofstrand, Jr., Rockville, Md., assignor to The Lofstrand Company, Rockville, Md.

Application April 23, 1551, Serial No. 222,419

1 Claim. (Cl. 135-50) This invention relates to crutches and is an improvement over the construction shown in my prior Patent No. 2,453,632, issued November 9, 1948, for Crutch.

An object of this invention is to provide a crutch which is adjustable as to length, the adjustment being made below and above the hand grip.

Another object or" this invention is to provide a crutch construction including an improved means of attaching the arm clamp to the upper portion of the staif.

A further object of this invention is to provide a crutch which is formed in most part out of tubular material and may be formed out of aluminum or other light weight material.

With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawings and specification, and then more particularly pointed out in the appended claim.

In the drawings:

Figure 1 is a detailed side elevation partly broken away of a crutch constructed according to an embodiment of this invention.

Figure 2 is a fragmentary sectional view taken on line 22 of Figure 1.

Figure 3 is a fragmentary sectional view taken on the line 3-3 of Figure 2.

Figure 4 is a sectional view taken on the line 44 of Figure 1.

Referring to the drawing the numeral designates generally a tubular stafi which is formed of a vertically disposed tubular member 11 having telescoping into the lower end thereof a second tubular member 12. The lower member 12 has mounted on the lower end thereof a rubber shoe or cap 13.

The staff 10 includes an obtusely bent upper portion 14 within which a tubular member 15 telescopes, and the inner member 15 is vertically adjustable in the upper member 14 by means of an opposed pair of locking pins or bolts 16 which are secured to a substantially U- shaped spring 17. The inner tubular member 15 is provided with diametrically opposed openings 18 through which the locking pins 16 slidably engage, and the upper member 14 is provided with a series of lengthwise spaced apart pairs of openings or keepers 19 within a selected pair of which the locking pins 16 are adapted to engage.

The lower members 11 and 12 are adjustably locked in endwise adjusted position by means of a pair of opposed locking pins 20 carried by a U-shaped spring 21, and the outer tubular member 11 is formed with a plurality of vertically spaced apart pairs of openings 22 within which the pins 20 are adapted to engage. A fixed hand gripping member 23 extends right angularly from the upper portion of the leg or staff member 11 and is carried by a sleeve or bushing 24 which is fixed by a pin 25 to the upper end portion of the leg or stafi member 11.

The upper tubular member 15 extends about a stud 26 which projects downwardly from a clevis or U-shaped member 27. a The stud 26 is formed with a pair of opposed recesses 28, and the upper portion of the tubular member 15 is pressed inwardly to form detents as indicated. at 29 so as to firmly secure the stud 26 within the tubular member 15.

A split arm clamping sleeve 30 is disposed at the upper end of the staff 10 and includes a block 31 which is secured to the sleeve 30 by means of fastening members 32. The block 31 is pivotally mounted between the arms of the clevis 27 being pivotally mounted on a pin 33 which extends through the arms of the clevis 27. The arm clamping member 30 may be disposed in the position shown in Figure 1 or, if desired, may be swung to the left so as to be disposed in a substantially diametrically disposed position on the opposite side from the hand gripping member 23. In the use of this crutch the arm gripping member 30 is engaged about the arm preferably below the elbow, and the hand on the arm engaged by the arm gripping member 30 is engaged about the handle or hand gripping member 23. The arm clamping member 30 may be lengthwise adjusted with respect to the upper staff member 14 by adjusting the locking pins 16 in selected pairs of openings or keepers 19. In like manner the staff 10 below the hand grasping member 23 may be extended or retracted by disposing the locking pins 20 in selected pairs of openings or keepers 22. This crutch is adapted to be madevout of tubular material and, preferably, of light weight metal such as aluminum or the like and is designed so that the arm clamping member 30 will loosely hold the crutch onto the arm in the event the handle or hand gripping member 23 is released.

What is claimed is:

A crutch comprising an elongated tubular staff formed of integral upper and lower tubular members disposed on an obtuse angle relative to each other, a tubular lower extension member telescoping into said lower tubular member, means securing said lower extension in adjusted position in said lower tubular member, an upper tubular extension member telescoping into said upper tubular member, means adjustably securing said upper extension member in said upper tubular member, a U- shaped clevis, a stud carried by said clevis projecting into the upper end of said upper extension member, said stud having a pair of diametrically disposed recesses in the peripheral surface thereof, a pair of detents carried by said upper extension member engaging in said recesses to thereby fixedly secure said stud in said upper extension member, a split arm engaging member carried by said clevis, a hand grip secured to and projecting right angularly from the upper end of said lower tubular member, said upper tubular member having a plurality of horizontally aligned pairs of apertures therethrough, said pairs of apertures being arranged vertically, said upper tubular extension having a single pair of oppositely disposed apertures therein, a pair of bolts extending through said last-mentioned apertures and into a selected pair of said first-mentioned apertures, and a U- shaped resilient sheet member biasing said bolts outwardly of said tubular member.

References Cited in the file of this patent UNITED STATES PATENTS 470,514 Simpson Mar. 8, 1892 2,453,632 Lofstrand Nov. 9, 1948 2,516,852 Burry et al. Aug. 1, 1950 2,590,607 Grimball Mar. 25, 1952

US222419A 1951-04-23 1951-04-23 Crutch Expired - Lifetime US2711183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US222419A US2711183A (en) 1951-04-23 1951-04-23 Crutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US222419A US2711183A (en) 1951-04-23 1951-04-23 Crutch

Publications (1)

Publication Number Publication Date
US2711183A true US2711183A (en) 1955-06-21

Family

ID=22832119

Family Applications (1)

Application Number Title Priority Date Filing Date
US222419A Expired - Lifetime US2711183A (en) 1951-04-23 1951-04-23 Crutch

Country Status (1)

Country Link
US (1) US2711183A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013772A (en) * 1958-09-22 1961-12-19 Applied Power Ind Inc Quickly extendable mechanical jack
US3167081A (en) * 1963-05-01 1965-01-26 James R Higgins Collapsible tent frames
US3474993A (en) * 1967-03-23 1969-10-28 Charles E Murcott Workbench underarm devices for invalid support
US3710807A (en) * 1971-11-18 1973-01-16 C Ferry Crutches
US4509741A (en) * 1983-01-03 1985-04-09 Guardian Products Company, Inc. Height adjustable crutch
US4565409A (en) * 1983-11-28 1986-01-21 Hollonbeck Gary G Body support apparatus
USRE32815E (en) * 1983-01-03 1989-01-03 Guardian Products, Inc. Height adjustable crutch
US4917126A (en) * 1985-06-19 1990-04-17 Children's Hospital Stowable crutch
US5038811A (en) * 1990-11-26 1991-08-13 Yvonne Johnson Self-opening cuff for crutch
US5048550A (en) * 1990-07-11 1991-09-17 Befashion Umbrella Co., Ltd. Structure of triple-folding umbrella skeleton
US5139040A (en) * 1990-01-16 1992-08-18 Kelly James V Collapsible lightweight crutch
US5564451A (en) * 1995-02-21 1996-10-15 Hagberg; Nils G. Forearm crutch
US5671765A (en) * 1995-02-21 1997-09-30 Hagberg, Jr.; Nils G. Forearm crutch
US20080072943A1 (en) * 2004-05-11 2008-03-27 Deborah Anne Forster Crutch
US20080087312A1 (en) * 2006-10-13 2008-04-17 University Of South Florida Folding Crutch
US10010474B2 (en) * 2016-05-06 2018-07-03 Yeagle Development Co., Ltd. Forearm crutch
US10172759B2 (en) * 2010-12-01 2019-01-08 Vidcapp Ithef Sl Adjustable elbow crutch with curved arm and oval section

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US470514A (en) * 1892-03-08 Lightning-conductor
US2453632A (en) * 1945-10-15 1948-11-09 Jr Anders R Lofstrand Crutch
US2516852A (en) * 1947-09-08 1950-08-01 William C Burry Crutch
US2590607A (en) * 1949-10-27 1952-03-25 Burmain A Grimball Combined cane and crutch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US470514A (en) * 1892-03-08 Lightning-conductor
US2453632A (en) * 1945-10-15 1948-11-09 Jr Anders R Lofstrand Crutch
US2516852A (en) * 1947-09-08 1950-08-01 William C Burry Crutch
US2590607A (en) * 1949-10-27 1952-03-25 Burmain A Grimball Combined cane and crutch

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013772A (en) * 1958-09-22 1961-12-19 Applied Power Ind Inc Quickly extendable mechanical jack
US3167081A (en) * 1963-05-01 1965-01-26 James R Higgins Collapsible tent frames
US3474993A (en) * 1967-03-23 1969-10-28 Charles E Murcott Workbench underarm devices for invalid support
US3710807A (en) * 1971-11-18 1973-01-16 C Ferry Crutches
US4509741A (en) * 1983-01-03 1985-04-09 Guardian Products Company, Inc. Height adjustable crutch
USRE32815E (en) * 1983-01-03 1989-01-03 Guardian Products, Inc. Height adjustable crutch
US4565409A (en) * 1983-11-28 1986-01-21 Hollonbeck Gary G Body support apparatus
US4917126A (en) * 1985-06-19 1990-04-17 Children's Hospital Stowable crutch
US5139040A (en) * 1990-01-16 1992-08-18 Kelly James V Collapsible lightweight crutch
US5048550A (en) * 1990-07-11 1991-09-17 Befashion Umbrella Co., Ltd. Structure of triple-folding umbrella skeleton
US5038811A (en) * 1990-11-26 1991-08-13 Yvonne Johnson Self-opening cuff for crutch
US5564451A (en) * 1995-02-21 1996-10-15 Hagberg; Nils G. Forearm crutch
US5671765A (en) * 1995-02-21 1997-09-30 Hagberg, Jr.; Nils G. Forearm crutch
US20080072943A1 (en) * 2004-05-11 2008-03-27 Deborah Anne Forster Crutch
US20080087312A1 (en) * 2006-10-13 2008-04-17 University Of South Florida Folding Crutch
US7712479B2 (en) * 2006-10-13 2010-05-11 University Of South Florida Folding crutch
US10172759B2 (en) * 2010-12-01 2019-01-08 Vidcapp Ithef Sl Adjustable elbow crutch with curved arm and oval section
US10010474B2 (en) * 2016-05-06 2018-07-03 Yeagle Development Co., Ltd. Forearm crutch

Similar Documents

Publication Publication Date Title
US3304035A (en) Golf cart umbrella attachment
US4179805A (en) Portable power operated tool
US3372510A (en) Fishing rod handling device
US4461439A (en) Appliance holder
US3966101A (en) Camera support
US3195550A (en) Walking devices
US3999565A (en) Walking stick device for orthopedic use
US2806416A (en) Gun stock camera support
US3326430A (en) Harness
US2529347A (en) Exercising device
US3204650A (en) Umbrella
US4017997A (en) Portable gun support
US4085763A (en) Quad cane
CA1140614A (en) Device for adjusting the height of the handle rods of babys' pushchairs, especially of pushchairs folding up like an umbrella for easy carrying
US2949947A (en) Straight beam adjustable jaw clamp
US2482589A (en) Implement holder
US2324803A (en) Work holder
US5640985A (en) Cane with grasping apparatus
US4674472A (en) Bow hip rest
US2380437A (en) Seat attachment for crutches
US3335735A (en) Crutch
US5634870A (en) Resilient platform exercise device
US3698389A (en) Elbow locking device
US2989334A (en) Bottle and can lifter
US4248256A (en) Platform crutch attachment for an invalid walker