Digital air pressure gauge and inflation device

Claim 1

A hand held tire pressure gauge for attachment to a tire valve stem for measuring and displaying the air pressure in a tire, said tire pressure gauge comprising: (a) casing means having a gripping surface and forming an enclosure for containing air pressure detection means and having means for visibly displaying air pressure in a tire, (b) said casing having top, bottom, first end, second end, front and back walls, each of said walls being rectangular in shape and together forming said enclosure, (c) an air chamber is located within said enclosure and extends between said top and bottom walls adjacent said first end wall, (d) said air chamber having a first opening at said top wall of said casing means, a second opening at said bottom wall of said casing means, a third opening centrally located at said first end wall of said casing means and a fourth opening located within said enclosure formed by said casing means, (e) air supply hose engagement means connected to and extending from said first opening of said air chamber, (f) tire valve engagement means connected to and extending from said second opening of said air chamber so that direct air communication is obtained between the tire valve and the air supply hose when the tire pressure gauge is in use, (g) air release means operably connected to said first end wall at said third opening of said air chamber, (h) electronic air pressure measuring means located within said enclosure and operably connected at said fourth opening of said air chamber, said electronic air pressure measuring means being electrically operable to determine the air pressure within said air chamber and display the measurement, and, (i) whereby, said casing means is sized for being held with one hand while an air pressure hose is applied at said air supply hose engagement means, and air may be released through said air release mans by a finger of the one hand gripping the casing.