Movable pump with flange having sealing means thereon

Claim 2

In a sump pump assembly or the like including a pump, positioning means adapted to engage said pump for only controlled vertical movement thereof and for accurately positioning said pump for use in its lowermost position, the improvement comprising a discharge member connecting to said pump and having an end flange, a fixedly positioned discharge tube means having an end flange, said member end flange being immediately adjacent, spaced from, and aligned with said tube means end flange when said pump is in its lowermost position, and an annular sealing diaphragm secured adjacent its periphery only to said discharge member end flange, said diaphragm having a center aperture and having an annular inner portion adapted to be forced against said tube means flange when said pump is in operation.

Claim 3

In a sump pump assembly as in claim 1 where said tube means end flange is smaller in diameter than said member flange, and where a securing ring is attached to said discharge member end flange to secure said diaphragm thereto.

Claim 4

In a sump pump assembly as in claim 1 where said diaphragm has some axial clearance with said discharge member flange at a radially inner portion of said diaphragm, and said discharge member flange has a fluid-receiving recess formed thereon adjacent its radially inner edge for flow of pumped liquids against one surface of said diaphragm to force a portion of said diaphragm towards and against said tube means end flange.

Claim 5

In a sump pump as in claim 1 where said diaphragm has a reinforced annular section thereon adjacent the center opening of said diaphragm, said section having a flat vertically extending surface for sealing engagement with an annular portion of said tube means flange.

Claim 6

In combination in a sump pump or the like, a pump, positioning means adapted for engaging said pump for only controlled vertical movement thereof and for accurately positioning said pump for use, and a fixedly positioned discharge tube assembly having a vertically extending end flange, the improvement comprising a discharge elbow secured to said pump and having a vertically extending end flange, said elbow end flange being immediately adjacent, spaced from, and aligned with said tube assembly end flange when said pump is in its operative position, and an annular sealing diaphragm secured at its periphery to said elbow end flange, said diaphragm having a radially inner portion adapted to be forced against said tube assembly flange when said pump is in operation but no permanent connection being formed between said flanges to permit vertical movement of said pump.

Claim 7

In combination in a sump pump or the like, a pump, positioning means adapted for engaging said pump for only controlled vertical movement thereof and for accurately positioning said pump for use, and a fixedly positioned discharge tube assembly having a vertically extending end flange, the improvement comprising a discharge elbow secured to said pump and having a vertically extending end flange, said elbow end flange being immediately adjacent, spaced from, and aligned with said tube assembly end flange when said pump is in its operative position, and an annular sealing diaphragm secured at its periphery to said elbow end flange, said diaphragm having a radially inner portion adapted to be forced against said tube assembly flange when said pump is in operation but no permanent connection being formed between said flanges to permit vertical movement of said pump.

Claim 8

In a combination as in claim 5 where said diaphragm is resilient and of conical shape to provide some clearance with said pump elbow flange at the portion of said diaphragm adjacent a center opening therein, and said elbow flange has an annular fluid receiving recess formed therein for flow of pumped liquids against one surface of said diaphragm to force a portion of it against said tube assembly end flange.

Claim 9

In a combination as in claim 5 where said diaphragm has a reinforced annular section thereon adjacent its periphery, said elbow end flange having a recess in its end face in which said section is received.