Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2525237 A
Publication typeGrant
Publication dateOct 10, 1950
Filing dateNov 16, 1949
Priority dateNov 16, 1949
Publication numberUS 2525237 A, US 2525237A, US-A-2525237, US2525237 A, US2525237A
InventorsPark Marion A
Original AssigneePark Marion A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Drop foot brace
US 2525237 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

M. A. PARK DROP FOOT BRACE Oct. 10, 1950 Filed Nov. 16;, 1949 .JZ/iPark INVENTOR ATTORNEYS Patented Oct. 10, 1950 UNITED STATES PATENT OFFICE 12,525,237; r a i 2 DROP FOOT BRAcE Marion A. Park, St. Louis, Mo. Application November 16, 1949, Serial No. 127,649


1 This invention relates to a support designed for use by patients suffering from various forms of paralysis, the primary object of the invention being to provide a support which will brace the leg, ankle and foot of the patient wearing the device, assisting in treating and preventing sun another object of the invention is to pro- 1 vide a brace which will be supported by the shoe Worn by the patient, in such a way that the leg brace section of the device may pivot with the bendin of the leg at the ankle, thereby relieving the support of undue pressure required when wearing the usual known leg braces.

With the foregoing and other objects in view which will'appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed;

Referring to the drawing Figure l is a perspective view of asupport, constructed in accordance with the invention.

Figure 2 is an enlarged detail view illustrating the yieldable means employed in returnin the foot to its normal position, after the bending of the foot in walking.

Referring to the drawing in detail, the reference character 5 indicates the shoe which is provided with a built-up sole 6 and a built-up heel! which is worn by the person using the support.

Fitted between the heel proper l and upper of the shoe, at the heel section thereof, is the plate 8 which includes inner right angled upwardly extended ears 9 and a rearwardly extended main arm II) which is of a length to extend beyond the rear edge of the heel l, as clearly shown by Figure 1 of the drawing.

The reference character ll indicates the main supporting arm of the device, which has its lower end curved and bifurcated, the ends of the furcations indicated at l2 being pivotally connected to the ears 9, at [3.

Secured to the rear surface of the arm H, near the lower end thereof,'is the tubular housing M which has its lower end open providin a housing for the coiled spring l5 which has its upper end 2 bearing against the disc I6 against which the tensioning screw l7 engages, the tensioning screw operating through a threaded bore in the upper end of the housing.

The lower end of the coiled spring I5 is fitted over the enlargement I8 holding the lower end of the spring in position on the main bar IU, so that under normal conditions, the action of the spring I5 will be to move the shoe or foot of the person wearing the shoe, to a position at right angles to the main supporting arm I I. It will be obvious that as the shoe moves with the bending of the ankle of the person wearing the shoe, the spring will be placed under tension to urge the shoe and foot to its normal position when the foot is raised in taking a step.

Secured at the upper end of the supporting arm I I, is the strap [9 which is substantially wide and constructed of soft rubber material for the comfort of the wearer. Secured to the strap I9, is a leather strap 20 which connects with the buckle 2| in securing the strap 19, around the leg of the person wearing the brace, the connection being made preferably directly below the knee of the person wearing the brace.

While the brace is designed primarily for treating patients suffering from various diseases such as poliomyelitis, or infantile paralysis, it is to be understood that the device is also beneficial in strengthening the metatarsal, particularly when the foot has a weakness to fall from the front.

With the device forming the subject matter of the present invention, the tension of the spring may be regulated to meet various requirements and conditions, for the benefit of the person using the device.

Having thus described the invention, what is claimed is:

1. A support comprising a, plate secured between the heel and upper of a shoe, the plate extendin beyond the heel portion of the shoe, a supporting arm pivotally connected to the plate adjacent to the front of the heel and being curved around the rear of the heel, a strap secured to the upper end of the arm and adapted to secure the upper end of the arm to the leg of the wearer, a tubular housing secured to the arm and disposed vertically, said housing having an open lower end, a coiled spring disposed within the open end of the housing and restingon the plate normally urging the plate and shoe to which the plate is connected, to a position at right angles with respect to the arm.

2. A support comprisin a plate secured between the heel and upper of a shoe, the plate position at right angles with respect to the arm,

and an adjusting screw by means of which the tension of the spring is regulated.


REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 10 Number Name Date 1,332,047 Lasher Feb. 24, 1920 2,444,839 Markkula July 6, 1948

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1332047 *Sep 25, 1919Feb 24, 1920Newton D BakerAnkle-brace
US2444839 *Jul 21, 1945Jul 6, 1948American BracesDrop-foot brace
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4938777 *Jun 11, 1987Jul 3, 1990Donjoy CorporationAnkle orthosis
US4941273 *Nov 29, 1988Jul 17, 1990Converse Inc.Shoe with an artificial tendon system
US5382224 *Oct 13, 1992Jan 17, 1995Spangler; Harry V.Drop foot brace
US5382225 *Jul 14, 1992Jan 17, 1995Sutcliffe; Brian L.Universal night splint
US6102881 *Apr 23, 1999Aug 15, 2000Todd R. QuackenbushHinged drop foot brace
US7112180 *Apr 23, 2002Sep 26, 2006F. Gottinger Orthopaedie-Technik GmbhBelow-knee orthotic device
US7611477Jul 11, 2007Nov 3, 2009William A. DayhoffToe lift strap
US8062243Jun 30, 2008Nov 22, 2011Anatomical Concepts, Inc.Orthotic device for a pivoting joint of the human body
US8425440Jan 27, 2010Apr 23, 2013Anatomical Concepts, Inc.Orthotic capable of accepting replaceable supports for a pivoting joint of a human body
US8529484Feb 9, 2010Sep 10, 2013Ortheses Turbomed Inc./Turbomed Orthotics Inc.Orthotic foot brace
US8904674 *Apr 7, 2011Dec 9, 2014Nathan SchwartzAnkle-foot orthosis
US20040186401 *Apr 23, 2002Sep 23, 2004Norbert GuentherLower leg orthosis
US20050148914 *Dec 24, 2003Jul 7, 2005Currier Mark R.Adjustable range of motion limiter
US20090018478 *Jul 11, 2007Jan 15, 2009Dayhoff William AToe lift strap
US20090326426 *Jun 30, 2008Dec 31, 2009Anatomical Concepts, Inc.Orthotic device for a pivoting joint of the human body
US20100130900 *Jan 27, 2010May 27, 2010Anatomical Concepts, Inc.Orthotic Capable of Accepting Replaceable Supports for a Pivoting Joint of a Human Body
US20120255194 *Apr 7, 2011Oct 11, 2012Nathan SchwartzAnkle-Foot Orthosis
DE10126622A1 *May 31, 2001Dec 5, 2002Gottinger Orthopaedie TechnikUnterschenkelorthese
U.S. Classification602/28
International ClassificationA61F5/01
Cooperative ClassificationA61F5/0127
European ClassificationA61F5/01D5