Search results
Results from the WOW.Com Content Network
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]
Verruca is a genus of asymmetrical sessile barnacles in the family Verrucidae. There are about 20 described species in Verruca , around half of them extinct. [ 1 ] [ 2 ] [ 3 ]
Grapeshot used fewer but larger projectiles than were contained within canister or shrapnel shells. [1] Case shot broadly describes any multi-projectile artillery ammunition. The canister round is known as a case, so canister was sometimes called case shot and the term has confusingly become generic for grapeshot and shrapnel shells. [1]
Using liquified gas as a propellant, its one-pound portable cylinder enabled soldiers to defend themselves against tropical malaria-carrying insects by spraying non-toxic insecticides inside tents and troop planes during World War II. From 1942 through 1945, more than 40 million "aerosol bombs" were sent to the troops.
Its gun barrel weighed 820 lb (371.9 kg) and fired a projectile weighing 9.5 lb (4.3 kg). The gunpowder charge weighed 1.0 lb (0.5 kg) and fired the projectile with a muzzle velocity of 1,215 ft/s (370 m/s) to a distance of 1,830 yd (1,673 m) at 5° elevation. [ 13 ]
A dust spray can often be used as a freeze spray. Many gas dusters contain HFC-134a (tetrafluoroethane), which is widely used as a propellant and refrigerant. HFC-134a sold for those purposes is often sold at a higher price, which has led to the practice of using gas dusters as a less expensive source of HFCs for those purposes.
[1] [page needed] There are two types of vehicle fuel vapor emission control systems: the ORVR, and the Stage II vapor recovery system. [2] Without either of these two systems, fuel vapors trapped inside gas tanks would be released into the atmosphere, each time refueling of the vehicle occurred. [ 3 ]
A blister pack [1] is any of several types of pre-formed plastic packaging used for small consumer goods, foods, and for pharmaceuticals. The primary component of a blister pack is a cavity or pocket made from a formable web, usually a thermoformed plastic.