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Quick disconnect for sewage system

  • US 4,702,274 A
  • Filed: 06/17/1986
  • Issued: 10/27/1987
  • Est. Priority Date: 06/17/1986
  • Status: Expired due to Term
First Claim
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1. A quick disconnect coupling device for coupling a vertical discharge conduit of a sump pump to a horizontal conduit through which waste water is discharged, comprising:

  • a pair of coupling members coupled together in communicating relation, one of said coupling members being connected to the vertical discharge conduit of the sump pump and the other coupling member being connected to the horizontal conduit, said one coupling member comprising a pair of coupling elements connected together in communicating relation, each of said coupling elements having a substantially planar front coupling face and a substantially planar rear coupling face disposed at an angle with respect to the associated front coupling face thereof, the included angle defined between the front coupling face of one coupling element and the rear coupling face of the other coupling element being 90 degrees, whereby said one coupling member defines a 90-degree elbow,a one-way check valve positioned between and secured to said coupling elements, said check valve comprising a flap hingedly connected between said coupling elements and being swingable to an open position in response to fluid pressure produced by the sump pump and being swingable to the closed position obstructing the flow of liquiid through the quick disconnect coupling device in the return direction, said check valve being disposed in inclined relation with respect to the horizontal conduit,one of said coupling elements being connected in communicating relation to the vertical discharge conduit, the other of said coupling elements having vertical substantially straight guide elements integral therewith and projecting laterally outwardly from opposite sides thereof,said other coupling member being of single piece construction and having a pair of vertical substantially straight guideways adjacent the marginal portions thereof and being engaged by the guide elements of said other coupling element when said coupling members are coupled together, means on the upper portion of said other coupling element engaging said other coupling member when said coupling members are in coupled relation to position said coupling members in registering relation with respect to each other.

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