Abstract: A hubcap for a wheel comprising a generally cup-shaped member adapted to be secured to a wheel and having a vent opening formed therein. A vent plug is positioned in the vent opening which permits the passage of air therethrough but which prevents the passage of water and contaminants therethrough. A grease shield is positioned at the inner surface of the end wall of the cup-shaped member for preventing grease or oil from coming into contact with the vent plug.

Abstract: A vented plug for a hubcap is disclosed and is comprised of a rubber, elastomer or Neophrene.TM. material having an insert molded therein with the insert being impervious to water and other contaminants so that water and other contaminants may not enter the interior of the hubcap but which permits the passage of air therethrough so that excessive pressure within the hubcap may be vented.

Abstract: An apparatus for indicating tire pressure is disclosed which indicates whether the tire pressure in a pair of pneumatic tires is low, normal or excessive. The apparatus includes a valve body which is operatively connected to each of the tires and comprises a valve which longitudinally moves in the apparatus responsive to air pressure. The valve is operatively connected to a scale pan having an arcuate display portion at one end thereof. The display portion on the scale pan includes colored rectangular segments which are visible through a sight window in the apparatus. The scale pan pivots in response to valve movement and the colored segment visible in the sight window indicates whether the tire pressure is low, normal or excessive.