US 3,945,605 A · Multiple plate valve

Abstract

A multiple plate valve is provided which is designed to continue to function to close off a conduit even after portions of the valve have worn. The valve includes a body portion in the form of a pair of outer cover members each having an aperture therein, at least a pair of closure members, such as plates, operatively retained between said outer cover members and adapted to be moved between open and closed positions and to cooperate with each other to close off the apertures in the outer cover members, and means for repositioning the closure members with respect to each other and the apertures, as the closure members wear out, so that the closure members will continue to cooperate with each other to close off the apertures. Such a valve is particularly useful where it is employed in a conduit used for delivering abrasives or caustic chemicals which tend to wear out the closure members of the valve.

Claims61

Dependent claims

A valve designed to continue to function to close off a conduit even after portions of the valve have worn, said valve comprising, in combination,

a body portion including a pair of outer cover members each having an aperture therein;
at least first and second closure members retained between said outer cover members, each of said closure members including a plurality of gear teeth extending substantially across each of said closure members, said gear teeth being adapted to engage gear means;
gear means for positioning said first and second closure members relative to each other and to said apertures in said outer cover plates, said gear means being in engagement with said gear teeth of said first and second closure members, so that movement of said gear means causes movement of at least one of said first and second closure members relative to each other so that said closure members may cooperate with each other to overlap over at least one of said apertures in said outer cover plates to close off said aperture, and as said first and second closure members wear, at least one of said closure members may be moved by said gear means so that unworn portions of said closure members will overlap and continue to cooperate with each other to close off said aperture in said outer cover members;
and
means for maintaining said gear teeth of said closure members in engagement with said gear means.

2 more elements

A valve designed to continue to function to close off a conduit even after portions of the valve have worn, said valve comprising, in combination,

a body portion including a pair of outer cover members, each of said cover members having an aperture therein;
at least first and second closure members retained between said outer cover members, said closure members comprising first and second plates which are adapted to move between overlapping and non-overlapping positions and to cooperate with each other and close off at least one of said apertures in said outer cover members;
means associated with each of said first and second plates for defining a path of travel of said plates as said plates are urged toward or away from said apertures in said outer cover members;
and
plate moving means connected to said plates for moving said plates with respect to each other and said apertures in said outer cover members, whereby said overlapping portions of said plates will be positioned in alignment with said aperture in said outer cover members to close off said aperture, and as said plates wear, said plates may be moved by said plate moving means so that unworn portions of said plates will overlap and continue to cooperate with each other to close off said aperture in said outer cover members.

2 more elements

A valve designed to continue to function to close off a conduit even after portions of the valve have worn, said valve comprising, in combination,

a body portion including a pair of outer cover members, each of said cover members having an aperture therein;
at least first and second closure members retained between said outer cover members, said closure members comprising first and second plates which are adapted to move between overlapping and non-overlapping positions and to cooperate with each other and close off at least one of said apertures in said outer cover members;
first and second plate gears connected to an off-centered portion of each of said first and second closure members, respectively, so that rotation of said plate gears will cause corresponding eccentric rotation of said closure members toward each other into overlapping positions in alignment with at least one of said apertures, or away from each other into non-overlapping positions and out of alignment with said apertures;
at least first and second auxiliary gears disposed in engagement with said first and second plate gears, respectively;
and
a drive gear disposed in engagement with each of said auxiliary gears, whereby rotational movement of said drive gear causes rotational movement of said auxiliary gears which in turn causes rotational movement of said plate gears and said first and second closure members, so that said first and second closure members may be moved into overlapping relationship with each other, the overlapping portions thereof being positioned in alignment with at least one of said apertures in said outer cover members to close off said apertures, and as said overlapping portions of said closure members wear, said closure members may be moved by said drive gear, auxiliary gears and plate gears so that unworn portions of said closure members will overlap and continue to cooperate with each other to close off at least one of said apertures in said outer cover members, and so that said closure members may be moved away from each other and said apertures to open said apertures;
and
means for maintaining said auxiliary gears in engagement with said plate gears and for maintaining said drive gear in engagement with said auxiliary gears.

5 more elements

A valve designed to continue to function to close off a conduit even after portions of the valve have worn, said valve comprising, in combination,

a body portion including a pair of outer cover members, each of said cover members having at least one aperture or opening therein;
at least a pair of closure members comprising first and second plates retained between said outer cover members, said first plate having at least two working areas, including a first elongated working area I and a second elongated working area II, said second plate having at least two working areas including a first elongated working area I' and a second elongated working area II', said first working areas I, I' being adapted to be positioned to work in conjunction with one another so as to be in or out of alignment with each other and with at least one of the apertures in said outer cover members, each of said first and second closure members further including a plurality of gear teeth which are adapted to engage gear means;
gear means for positioning said first and second closure members relative to each other and to said apertures in said outer cover members, said gear means being in engagement with said gear teeth of said first and second closure members so that movement of said gear means causes movement of said first and second closure members toward or away from each other so that said closure members may be positioned to cooperate with each other to open or close off at least one of said apertures in said outer cover plates, and so that after the first or second working areas of said first and second plates are worn, movement of said gear means causes said first and second plates to move relative to each other to present unworn second or first working areas for use in closing off at least one of said apertures in said outer cover members;
and
means for maintaining said gear teeth of said first and second plates in engagement with said gear means.

2 more elements

Dependencies are inferred from the claim text.

Multiple plate valve

Life of this patent

Multiple plate valve

Life of this patent

Abstract

Claims61