# US 5,342,072 A · Baby walker having safety interlock

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- Number: US 5,342,072 A
- Document ID: US5342072A
- Status: Granted
- Kind: A
- Application number: 08/018,064
- Filed: 1993-02-16
- Granted: 1994-08-30
- Earliest claimed: 1993-02-16
- Inventors: Romeo Prasad
- Web page: https://patentgrep.com/patent/US5342072A

## CPC

- A47D 13/04: Apparatus for helping babies to walk; Baby walkers or strollers
- A61H 3/04: Wheeled walking aids for patients or disabled persons
- A61H 2003/046: {with braking means}
- A47D: FURNITURE SPECIALLY ADAPTED FOR CHILDREN (school benches or desks A47B39/00, A47B41/00)
- 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 (electrotherapy, magnetotherapy, radiation therapy or ultrasound therapy A61N)

## Abstract

A walker for an infant or incapacitated adult which includes a frame work dimensioned and configured for placement around the user having an upper member dimensioned to enable the user to support him or herself and a lower member encircling the legs of the user, the upper and lower members being disposed in spaced relationship. The apparatus also includes a plurality of wheels carried on the second member at spaced parts thereof and apparatus for locking the wheels responsive to passage of the walker into a predetermined zone of danger. In some forms of the invention the apparatus for locking includes a apparatus contacting the circumference of each of the wheels. The wheels may be caster wheels and the apparatus for locking may include a plurality of holes in the circumference of each wheel and a pin dimensioned and configured for engaging the holes. The apparatus for locking may include a cable connected to each pin for limiting axial motion thereof. The apparatus for locking may include a receiver for receiving a signal and a transmitter for sending a signal which may be for a radio frequency signal. The apparatus may also include apparatus for sensing movement of the walker into a predetermined zone of danger.

## Claims

### Claim 1

A walker for an infant or incapacitated adult which comprises:
a frame work dimensioned and configured for placement around the user having an upper member dimensioned to enable the user to support him or herself and a lower member
encircling the legs of the user, said upper and lower members being disposed in spaced relationship;
a plurality of wheels carried on said second member at spaced parts thereof, said wheels being caster wheels;
means for locking said wheels responsive to passage of said walker into a predetermined zone of danger, said means for locking includes a means contacting the circumference of each of said wheels and a plurality of holes in the circumference of each wheel and a pin dimensioned and configured for engaging said holes.

### Claim 2 (depends on 1)

The apparatus as described in claim 1, wherein:
said means for locking includes a cable connected to each pin for limiting axial motion thereof.

### Claim 3 (depends on 2)

The apparatus as described in claim 2 wherein:
said means for locking includes a receiver for receiving a signal and a transmitter for sending a signal.

### Claim 4 (depends on 3)

The apparatus as described in claim 3, wherein:
said receiver and transmitter utlize a radio frequency signal.

### Claim 5 (depends on 4)

The apparatus as described in claim 4 further including:
means for sensing movement of said walker into a predetermined zone of danger.

### Claim 6 (depends on 5)

The apparatus as described in claim 5 wherein:
said means for locking includes a solenoid disposed at each caster wheel, each solenoid including a pin for engaging one of said caster wheels.

### Claim 7 (depends on 6)

The apparatus as described in claim 6 further including:
means for sensing movement of said walker into a predetermined zone of danger.