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Alan Amron (born November 20, 1948) is an American inventor who holds 40 [1] [2] United States patents. Amron invented the Photo Wallet and Battery operated water guns.. He has claimed to be the inventor of the Post-it note Sticky notes, for which he sued 3M in 1997 and agreed to a confidential settlement.
Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.
Post-it as we know it was patented by Fry in 1993 as a "repositionable pressure-sensitive adhesive sheet material". [3] Silver worked for over 30 years at 3M rising to a position of a corporate scientist before retiring in 1996. [3] Some of the other products that he worked on included block copolymers and immunodiagnostics. [3]
Modern wire rope was invented by the German mining engineer Wilhelm Albert in the years between 1831 and 1834 for use in mining in the Harz Mountains in Clausthal, Lower Saxony, Germany. [ 3 ] [ 4 ] [ 5 ] It was quickly accepted because it proved superior strength from ropes made of hemp or of metal chains , such as had been used before.
A wire rope clamp designed to loop wire cable without the losing the integrity of the wire was invented by Oliver Crosby in 1886. [3] American Manufacturing Company invented further enhancements to the construction industry by establishing steam-powered hoists in 1889 and the largest electric hoists, up to 15 hp.
A Post-it note (or sticky note) is a small piece of paper with a re-adherable strip of glue on its back, made for temporarily attaching notes to documents and other surfaces. A low- tack pressure-sensitive adhesive allows the notes to be easily attached, removed and even re-posted elsewhere without leaving residue.
In truth, William Post was an accidental inventor, and he graciously insisted throughout his life that his great creation was a team effort. And his start in the snack business came as a truck washer.
A lifting hook with a safety latch. A lifting hook is a device for grabbing and lifting loads by means of a device such as a hoist or crane.A lifting hook is usually equipped with a safety latch to prevent the disengagement of the lifting wire rope sling, chain or rope to which the load is attached.
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