Abstract: Disclosed is a level load spring axle assembly for trailers and the like which has a main shaft rotatably mounted on the frame of a vehicle by a pair of spaced bearing brackets. A pair of parallel extending spaced crank arms are fixed to each end of the main shaft on either side of each of the bearing brackets. The crank arms extend transverse to the length of the main shaft. Wheel spindles are mounted to extend parallel to the main shaft from each of the outer crank arms. A spring follower is rigidly coupled between the crank arms coaxial with the wheel spindles. A leaf spring is attached to the bearing brackets which in turn may be attached to the frame of the vehicle. The spring is narrower in width than the space between the pairs of crank arms. The spring has a first portion which extends away from the main shaft and a second curved portion which extends from the end of the first portion back in a direction toward the main shaft.

Abstract: Disclosed is an improved tank vent. The vent prevents liquid loss if the tank is inverted and prevents contaminants from entering the tank. The vent includes an elongated housing forming a tubular chamber communicating with the interior of the tank. Disposed within the chamber is an annular valve seat. Disposed within the chamber adjacent the valve seat is a free sliding elongated buoyant valve member. The buoyant valve member has a protruding valve surface disposed on the end of the buoyant member adjacent the valve seat. The surface area of the valve surface is significantly less than the surface area of the end of the buoyant member upon which the valve surface is disposed. The valve surface is configured to sealably engage the valve seat for movement into and out of contact with the seat as the buoyant member moves within the chamber.