Abstract: An electric vacuum valve comprising a body including a chamber having a first passage adapted to be connected to a source of vacuum, a valve seat in the chamber, a bi-metallic disc associated with the valve seat and operable to close the first passage and a second passage to the exterior of said body. A PTC disc is positioned in the chamber adjacent the bi-metallic disc and includes a first terminal connected to one side thereof and extending exteriorly of the body and a second terminal connected to the other side thereof and extending externally of the body such that heat from the PTC disc functions to radiate toward the bi-metallic disc when power is applied to said terminals to cause the bi-metallic disc to seat against the valve seat and when power is terminated, the bi-metallic disc cools and moves away from the valve seat.

Abstract: A fuel vapor vent valve comprising a plastic body including a base wall and a peripheral wall and a plastic cap including a base wall and a peripheral wall surrounding the peripheral wall of the plastic body. The peripheral wall of the base has a radially outwardly extending annular rib and the peripheral wall of the cap has a radially inwardly extending rib. The ribs are adapted to pass over one another to provide a snap fit during assembly. The base wall of the body has integral O-ring retaining means for retaining an O-ring. A bi-metallic disc is positioned in said body within the confines of the peripheral wall of the body and normally engages said O-ring. Integral stop means on the cap are adapted to be engaged by the bi-metal disc when the disc is caused to move to a position out of engagement with the O-ring upon increase of the ambient temperature.

Abstract: A headlamp delay device comprising a switch having spaced contacts, a switch contact member movable to successively engage the contacts at different positions and detent means for holding the contact member in each of the positions. A housing has a piston and diaphragm dividing the housing into two chambers. A passage associated with one of the said chambers for connection to a source of vacuum and an inlet is provided to the one chamber. An orifice is associated with the inlet to the chamber for connection to a source of pressure higher than that supplied through the vacuum. A spring yieldingly urges the piston means in a direction opposite to that which the vacuum tends to move the piston. A shaft extends through the housing through the piston means and is connected to the switch contact member.

Abstract: A delay valve comprising a housing including a side wall and opposed end walls and a plug in the housing cooperating with the side wall to define a first and second chamber. A check valve is provided in the plug permitting flow of air in one direction such that air may flow freely from the second through said check valve to the first chamber and is prevented from flowing from the first to the second chamber. The end walls of the housing have openings communicating with the exterior of the housing, and the plug has a peripheral portion that cooperates with the side wall of the housing to define a helical passage communicating with said first and second chambers.

Abstract: A throttle control system comprising a throttle member movable with the throttle and yieldingly urged toward a throttle closed position and a vacuum controlled positioning assembly including a housing, a diaphragm within the housing dividing the housing into two chambers. A stem is mounted on the diaphragm and extends from the housing through an opening. The plunger has a first cylindrical portion and a second portion including opposed parallel flat surfaces connected by arcuate cylindrical portions having the same diameter as the first cylindrical portion. The opening has longitudinally spaced portions. One portion is cylindrical and generally complementary to said first cylindrical portion of the plunger and the other portion has the same configuration as the second portion of the plunger. A spring yieldingly urges the diaphragm in a direction to retract the plunger inwardly of the housing.

Abstract: A butterfly valve comprising a body having a cylindrical passage and a diametral pivot pin and a butterfly valve plate fixed to the pivot pin. The plate is formed with a planar central portion at which the pin is connected to the plate. In assembly, the pin is first placed in position and then the valve plate is adjusted angularly and radially until the periphery of the plate is in sealing relation to the inner surface of the passage. The plate is then fastened to the pin by welding.

Abstract: A pressure-vacuum relief fuel filler cap comprising a cover, having a base and a peripheral flange, and a sub-assembly mounted at least partially within the cover with said peripheral flange surrounding a portion of the sub-assembly. The assembly comprises a body of synthetic plastic material including an outer threaded end adapted to engage a threaded filler opening, and an enlarged upper end with portions thereof engaging the base of the cover. A pressure relief valve and associated valve seat are mounted within the body and a vacuum relief valve and associated valve seat are mounted within the body. Torque limiting means are provided between the body and the cover for limiting the torque applied to the body during application to a filler opening, so that when a predetermined torque is reached, the cover can be rotated relative to the body and when the cap is rotated in the opposite direction, there can be no relative movement between the cover and the body.