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John H. Balsley (May 29, 1823 – March 12, 1895) was a master carpenter and inventor, inventing a practical folding wooden stepladder and receiving the first U.S. patent issued for a safety stepladder in the year. He was born in Connellsville, Fayette County, Pennsylvania to George H. and Sarah (Shallenberger) Balsley. His father was also a ...
Mobile safety steps, sometimes called warehouse steps, are mobile structures with steps up to a platform. The steps use wheels or casters , making them easy to move. They have the advantage over standard ladders in that the operative can have one hand free when moving up and down the steps and both hands free if there is a top-level platform.
Mobile safety steps: Can be used as temporary, safe replacements for many types of stairs; Runner: Carpeting that runs down the middle of the stairs. Runners may be directly stapled or nailed to the stairs, or may be secured by a specialized bar, known as a stair rod, that holds the carpet in place where the tread meets the riser.
The automatic semi-trailer coupling patented by Fruehauf dominated the semi-trailer market until the Fruehauf Trailer Corporation's assets were sold in bankruptcy to Wabash National in 1997. Another fifth wheel patent U.S. 2,053,812 [ 9 ] was issued to Charles E. Bradshaw of Wellville, Virginia , filed March 18, 1936 and granted September 8, 1936.
Folding cane: has several joints, generally linked by an internal elastic cord, enabling them to be folded into a shorter length when not in use. Forearm cane : a regular or offset cane with additional forearm support, enabling increased stability and load shifted from the wrist to the forearm.
The Smart Traveler Enrollment Program (STEP) is a service provided by the U.S. Department of State for U.S. citizens and nationals traveling and living abroad to enroll their trip with the nearest U.S. embassy or consulate. [1] [2] [3]