초록 ▼

A rollable device, designed to be pushed by a blind person, has a plurality of sensors so spaced and so located upon a wheeled mount as to detect the presence of an object, step, or depression in the path of the user, and in so doing actuate electrical means designed to instantaneously inform the us

A rollable device, designed to be pushed by a blind person, has a plurality of sensors so spaced and so located upon a wheeled mount as to detect the presence of an object, step, or depression in the path of the user, and in so doing actuate electrical means designed to instantaneously inform the user of the presence of the potentially dangerous condition. The electrically actuated means includes vibratory devices in the handle of the device, so located as to acquaint a blind person with the locaton and nature of the dangerous condition in his or her path. Means is also incorporated in the device, in the form of a buzzer or other electrically actuated audible device, signifying the presence of objects such as automobile bumpers which are elevated above the ground surface and would therefore otherwise go undetected. Incorporated in the device, also, is a means actuable by the user for sounding a horn or the like for the purpose of seeking help or for warning others of his approach. The invention incorporates side and front bumpers, an antenna-like member, and a wheel suspension that drops bodily, as sensors having the capability of detecting a wide variety of dangerous conditions that may be encountered by a blind person.

대표청구항 ▼

An aid to be used by a visually impaired person for detecting hazards in the path of said person, comprising: a rollable assembly including a base in the form of a flat, horizontal platform having front and rear wheels, said assembly further including an elongated handle means secured to the rear en

An aid to be used by a visually impaired person for detecting hazards in the path of said person, comprising: a rollable assembly including a base in the form of a flat, horizontal platform having front and rear wheels, said assembly further including an elongated handle means secured to the rear end of the platform and extending rearwardly upwardly therefrom, said handle means being adapted to be grasped by a user to propel the rollable assembly along said path; sensing means carried by said assembly adapted to detect hazards in the path of a visualLy impaired person, said sensing means being movable from a normal position to an operating position upon detection of a hazard in said path; and electrical alarm means for said rollable assembly actuated by movement of the sensing means to an operating position for informing the visually impaired person of the sensed hazard, the sensing means including a plurality of bumpers and switch means associated therewith, said bumpers being respectively deflectable by hazards encountered thereby and being adapted when deflected to actuate the switch means, the switch means being in circuit with said electrical alarm means, said platform having a leading edge disposed normally to the length of the handle means and extending laterally of the handle means at both sides thereof, the platform having side edges generally parallel to the length of the handle means, said bumpers including a front bumper centrally disposed upon the rollable assembly in front of and generally parallel to the leading edge thereof in position extending transversely of the assembly laterally beyond said side edges of the platform, said bumpers further including side bumpers projecting laterally outwardly from the respective side edges of the platform, the front and side bumpers being generally coplanar with the platform and being disposed in overlapping relation at the respective, opposite sides of the platform.