Peristalitic diaphragm pump structure

Claim 2

A peristaltic diaphragm pump structure having in combination a base member comprising a pump chamber having an inlet and an outlet port, a diaphragm extending across said pump chamber, a piston comprising a wabble head in operative engagement with said diaphragm, a non-linear shaft operating said wabble head, means driving said shaft, means extending through said wabble head removably securing said diaphragm to said wabble head, a passage extending vertically through a rim portion of said wabble head, a rod having its upper end portion disposed in said passage, means pivotly securing said rod in said passage for swinging movement of said rod toward and away from said shaft of said wabble head, a spherical ball carried in said base member underlying said passage, said ball having a diametrical passage therethrough and said rod having its lower end portion disposed through said passage of said ball, whereby said rod accommodates the tilting action of said wabble head and inhibits said wabble head against circumferential movement relative to said diaphragm.

Claim 3

A peristaltic diaphragm pump structure having in combination a housing member comprising a pump chamber having an inlet and an outlet port, a diaphragm extending across said pump chamber, a piston comprising a wabble head in operative engagement with said diaphragm, a driving means for driving said wabble head, in a wabble motion, said driving means including a nonlinear shaft, a rod member, a first connecting means pivotally connecting said rod member to said wabble head, a second connecting means pivotally connecting said rod member to said housing member and in spaced relation with the connection of said rod member and said wabble head, at least one of said first and second connecting means including means rendering said rod member movable with respect to said one of said connecting means, generally along a line through the connection between said rod member and said wabble head and the connection between said rod member and said housing member, and one of said connecting means including means pivotally mounting said rod member for swinging movement toward and away from said non-linear shaft and restraining said rod member from sidewise movement generally normal to the aforesaid swinging movement, whereby said rod member accommodates the tilting action of said wabble head and inhibits said wabble head against circumferential movement relatIve to said diaphragm.

Claim 4

A peristaltic diaphragm pump structure having in combination a housing member comprising a pump chamber having an inlet and an outlet port, a diaphragm extending across said pump chamber, a piston comprising a wabble head in operative engagement with said diaphragm, a driving means for driving said wabble head, in a wabble motion, said driving means including a nonlinear shaft, a rod member, a first connecting means pivotally connecting said rod member to said wabble head, a second connecting means pivotally connecting said rod member to said housing member and in spaced relation with the connection of said rod member and said wabble head, at least one of said first and second connecting means including means rendering said rod member movable with respect to said one of said connecting means, generally along a line through the connection between said rod member and said wabble head and the connection between said rod member and said housing member, and one of said connecting means including means pivotally mounting said rod member for swinging movement toward and away from said non-linear shaft and restraining said rod member from sidewise movement generally normal to the aforesaid swinging movement, whereby said rod member accommodates the tilting action of said wabble head and inhibits said wabble head against circumferential movement relatIve to said diaphragm.

Claim 5

The structure of claim 2 wherein the other of said connecting means includes a spherical ball having a generally diametrical passage therethrough, said rod member disposed in said passage and longitudinally slidable therein, and means cooperable with said spherical ball to provide a ball and socket connection. 4. A peristaltic diaphragm pump structure having in combination a housing member comprising a pump chamber having an inlet and an outlet port, a diaphragm extending across said pump chamber, a piston comprising a wabble head in operative engagement with said diaphragm, a driving means for driving said wabble head, in a wabble motion, a rod member, a first connecting means pivotally connecting said rod member to said wabble head, a second connecting means pivotally connecting said rod member to said housing member and in spaced relation with the connection of said rod member and said wabble head, one of said connecting means including a ball and socket connection, the ball portion thereof having a diametrical passage therethrough, and said rod member is disposed in said passage and is longitudinally slidable therein whereby said rod member accommodates the tilting action of said wabble head and inhibits said wabble head against circumferential movement relative to said diaphragm.

Claim 6

The structure of claim 3 wherein said one of said connecting means connects said rod member to said wabble head, and said other of said connecting means connects said rod member to said housing member.

Claim 7

A peristaltic diaphragm pump structure having in combination a housing member comprising a pump chamber having an inlet and an outlet port, a diaphragm means extending across said pump chamber, a piston means in operative engagement with said diaphragm means, a non-linear shaft rotatable about an axis and operably connected to said piston means for operating said piston means in a motion to progressively compress and relieve said diaphragm means to effect a pumping action between said inlet and outlet ports, a rigid connecting member, a first connecting means connecting said rigid connecting member to said piston means, a second connecting means connecting said rigid connecting member to said housing member and in spaced relation with the connection between said rigid connecting member and said piston means, at least one of said first and second connecting means providing a pivotal connection between said rigid connecting member and the member to which it is connected, at least one of said first and second connecting means including means rendering said rigid connecting member movable with respect thereto, generally along a line through the connections of said piston means and of said housing member to said rigid connecting member, one of said connecting means including a pivotal connection rendering said rigid connecting member swingable thereabout generally toward and away from said axis and precluding transverse swinging movement thereof, and the other of said connecting means including a ball and socket pivotal connection, whereby said rod accommodates the pumping action of said piston means and inhibits said piston means against circumferential movement relative to said diaphragm means.

Claim 8

A peristaltic diaphragm pump structure having in combination a housing member comprising a pump chamber having an inlet and an outlet port, a diaphragm means extending across said pump chamber, a piston means in operative engagement with said diaphragm means, a non-linear shaft rotatable about an axis and operably connected to said piston means for operating said piston means in a motion to progressively compress and relieve said diaphragm means to effect a pumping action between said inlet and outlet ports, a rigid connecting member, a first connecting means connecting said rigid connecting member to said piston means, a second connecting means connecting said rigid connecting member to said housing member and in spaced relation with the connection between said rigid connecting member and said piston means, at least one of said first and second connecting means providing a pivotal connection between said rigid connecting member and the member to which it is connected, at least one of said first and second connecting means including means rendering said rigid connecting member movable with respect thereto, generally along a line through the connections of said piston means and of said housing member to said rigid connecting member, one of said connecting means including a pivotal connection rendering said rigid connecting member swingable thereabout generally toward and away from said axis and precluding transverse swinging movement thereof, and the other of said connecting means including a ball and socket pivotal connection, whereby said rod accommodates the pumping action of said piston means and inhibits said piston means against circumferential movement relative to said diaphragm means.

Claim 9

The structure of claim 6 wherein said ball and socket connection includes a generally spherical ball, said ball having a generally diametrical passage therethrough, said rigid connecting member comprises a rod member and said rod member is disposed in said passage and is slidable therein generally along a line through said two pivotal connections. 8. A peristaltic diaphragm pump structure having in combination a housing member comprising a pump chamber having an inlet and an outlet port, a diaphragm extending across said pump chamber, a piston comprising a wabble head in operative engagement with said diaphragm, a non-linear shaft operatively connected with said wabble head for driving said wabble head in a wabble motion, said diaphragm having an upstanding flange medially thereof extending substantially throughout the length thereof, a relatively rigid, generally annular, insert member imbedded in said diaphragm, said insert member having a base portion disposed in the diaphragm itself and an upstanding portion thereof extending into said upstanding flange, said wabble head having an open bottom slot medially thereof corresponding coextensive with said flange and having said flange disposed therein, means extending through said wabble head engaging and securing said flange therein, a rod member, a first connecting means pivotally connecting said rod member to said wabble head, a second connecting means pivotally connecting said rod member to said housing member and in spaced relation with the connection of said rod member and said wabble head, and at least one of said first and second connecting means including means rendering said rod member movable with respect to said one of said connecting means, generally along a line through the connection between said rod member and said wabble head and the connection between said rod member and said housing member, whereby said rod member accommodates the tilting action of said wabble head and inhibits said wabble head against circumferential movement relative to said diaphragm. 9. A peristaltic diaphragm pump structure having in combination a housing member comprising a pump chamber having an inlet and an outlet port, a diaphragm extending across said pump chamber, a piston comprising a wabble head in operative engagement with said diaphragm, a non-linear shaft operatively connected with said wabble head for driving said wabble head in a wabble motion, said diaphragm having an upstanding flange medially thereof extending substantially throughout the length thereof, a relatively rigid, generally annular, insert member inbedded in said diaphragm, said insert member having a base portion disposed in the diaphragm itself and an upstanding portion thereof extending into said upstanding portion thereof extending into said upstanding flange, said wabble head having an open bottom slot medially thereof corresponding coextensive with said flange and having said flange disposed therein, means extending through said wabble head engaging and securing said flange therein, a passage extending vertically through a rim portion of said wabble head, a rod having its upper end portion disposed in said passage, means pivotly securing said rod in said passage for swinging movement of said rod toward and away from said shaft of said wabble head, and a spherical ball carried on said housing member, said ball having a diametrical passage therethrough and said rod having its lower end portion disposed through said passage of said ball, whereby said rod accommodates the tilting action of said wabble head and inhibits said wabble head against circumferential movement relative to said diaphragm.