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The Patient Operated Selector Mechanism (POSM or POSSUM) was developed in the early 1960s, and used a sip-and-puff control mechanism. Sip-and-puff or sip 'n' puff (SNP) is assistive technology used to send signals to a device using air pressure by "sipping" (inhaling) or "puffing" (exhaling) on a straw, tube or "wand."
Steering is through a handlebar directly connected to the front wheel via a conventional bicycle fork in delta, or via a form of Ackermann steering geometry in the case of the upright tadpole. All non-tilting trikes have stability issues and great care must be used when riding a non-tilting upright trike.
A Step-through frame is a type of bicycle frame, often used for utility bicycles, with a low or absent top tube or cross-bar; A push bike is a form of bicycle without pedals such as the drais 1820 which is one of the first verifiable push bikes.
A step-through frame (also known as open frame, drop frame, or low-step frame) is a type of bicycle frame, often used for utility bicycles, with a low or absent top tube or cross-bar. [ 1 ] Since mounting or dismounting a step-through does not require swinging one leg to hip-height, they are widely used as delivery bicycles, and for other ...
Schwinn AeroCycle in Longmont Museum & Cultural Center 1950s Huffy Radio Bicycle Schwinn advertisement from 1946. A cruiser bicycle, also known as a beach cruiser or (formerly) motobike, is a bicycle that usually combines balloon tires, an upright seating posture, a single-speed drivetrain, and straightforward steel construction with expressive styling.
For example, wheelchairs provide independent mobility for those who cannot walk, while assistive eating devices can enable people who cannot feed themselves to do so. Due to assistive technology, disabled people have an opportunity of a more positive and easygoing lifestyle, with an increase in "social participation", "security and control ...
A standing wheelchair is an automated device that assists its user in moving from a seated, to standing position and oftentimes back to flat if the chair has the capabilities of doing so. Standing wheelchairs are common among individuals with: muscular dystrophy, multiple sclerosis, and other ailments that compromise mobility functions.
A wheelchair ramp is an inclined plane installed in addition to or instead of stairs. Ramps permit wheelchair users, as well as people pushing strollers, carts, or other wheeled objects, to more easily access a building, or navigate between areas of different height. Ramps for accessibility may predate the wheelchair and are found in ancient ...