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Headlamp automatic delay system

  • US 4,097,778 A
  • Filed: 10/12/1976
  • Issued: 06/27/1978
  • Est. Priority Date: 10/12/1976
  • Status: Expired due to Term
First Claim
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1. In a headlamp delay device, the combination comprisinga switch having spaced contacts,a switch contact member movable to successively engage said contacts at different positions,a plurality of detent means for holding said contact member in each of said positions with a predetermined force,a housing,piston means dividing said housing into two chambers,a passage associated with one of said chambers for connection to a source of vacuum,an inlet to said one chamber,an orifice associated with said inlet to said chamber for connection to a source of pressure higher than that supplied through said vacuum,spring means yieldingly urging said piston means in a direction opposite to that which the vacuum tends to move said piston means,a shaft extending through said housing through said piston means and connected to said switch contact member,energy storing means interposed between the shaft and the piston means and operable by the piston means upon dissipation of the vacuum and functioning of said spring means to move said piston means to store energy when the vacuum is being dissipated such that upon predetermined storage of energy, the energy storing means functions to move the shaft and in turn the contact member within the switch against the action of the detent means successively storing energy and moving the shaft against the action of successive detent means from one detent position to another.

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