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Russell Gray, a Minneapolis parking lot attendant, founded Gray Company, Inc. in 1926 with his brother Leil Gray to produce and sell Russell's air-powered grease gun, invented in response to cold weather making hand-powered grease guns inoperable. [3] Sales their first year of operation were $35,000. [3] By 1941, annual sales had reached $1 ...
Spray foam insulation or spray polyurethane foam (SPF) is an alternative to traditional building insulation such as fiberglass. A two-component mixture composed of isocyanate and polyol resin comes together at the tip of a gun, and forms an expanding foam that is sprayed onto roof tiles, concrete slabs, into wall cavities, or through holes ...
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Water bead ammunition. A gel ball blaster, also known as a water gel blaster, orbeez gun, gel gun, gel shooter, gel marker, hydro gel blaster, water bead blaster or gelsoft gun, is a toy gun similar in design to airsoft guns, but the projectiles they shoot are 7–8mm (depending on the replica) superabsorbent polymer water beads (most commonly sodium polyacrylate, colloquially called gel balls ...
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Spray nozzles can have one or more outlets; a multiple outlet nozzle is known as a compound nozzle. Multiple outlets on nozzles are present on spray balls, which have been used in the brewing industry for many years for cleaning casks and kegs. [2] Spray nozzles range from those for heavy duty industrial uses to light duty spray cans or spray ...
The aerosol spray canister invented by USDA researchers, Lyle Goodhue and William Sullivan.. The concepts of aerosol probably go as far back as 1790. [1] The first aerosol spray can patent was granted in Oslo in 1927 to Erik Rotheim, a Norwegian chemical engineer, [1] [2] and a United States patent was granted for the invention in 1931. [3]
Sticky foam is a type of less-lethal weapon, consisting of various extremely tacky and/or tenacious materials carried in compressed form with a propellant and used to block, entangle, and impair individuals. A National Institute of Justice-funded project at Sandia National Laboratory developed a "gun" which could fire multiple shots of sticky foam.