Apparatus having a filter panel disposed across a fluid passageway

Claim 2

Apparatus having a fluid passageway having opposite ends and a chamber having an opening connecting with the passageway intermediate its ends, a filter panel, means connected to the filter panel for moving it between a position across the passageway for accumulating particulate material from said fluid on its upstream side and a position across the opening and removed from across the passageway and with its upstream side facing said chamber, and means for removing particulate material from the upstream side of the filter panel, and collecting it in said chamber when said filter is across said opening, said chamber having another opening through which particulate material collected therein may be removed.

Claim 3

Apparatus of the character defined in claim 1, wherein said means for removing said particulate material comprises means for causing fluid to flow through the filter panel and into the chamber when the filter panel is across said opening.

Claim 4

Apparatus of the character defined in claim 2, including means for sealing between the periphery of the filter panel and said opening when the filter panel is across the opening.

Claim 5

Apparatus of the character defined in claim 1, wherein said means for removing said particulate material includes means for jarring said filter panel when it is across said opening.

Claim 6

Apparatus of the character defined in claim 4, including mEans for sealing between the periphery of the filter panel and said opening when the filter panel is across said opening.

Claim 7

Apparatus of the character defined in claim 4, wherein said means for removing particulate material also includes means for causing fluid to flow through the filter panel and into the chamber when the filter panel is across said opening.

Claim 8

Apparatus of the character defined in claim 6, including means for sealing between the periphery of the filter panel and said opening when the filter panel is across the opening.

Claim 9

Apparatus of the character defined in claim 2, wherein said means for causing fluid to flow through the filter panel includes means connecting with the other chamber opening for withdrawing fluid therefrom.

Claim 10

Apparatus of the character defined in claim 8, including means for normally closing said opening, and means for opening said closing means when said filter panel is across said opening.

Claim 11

Apparatus of the character defined in claim 9, including means for sealing between the periphery of the filter panel and said opening when the filter panel is across said opening and prior to opening of said closing means.

Claim 12

Apparatus of the character defined in claim 9, wherein said means for removing said particulate material includes means for jarring said filter panel when across said opening.

Claim 13

Apparatus of the character defined in claim 11, including means for sealing between the periphery of the filter panel and said opening when said filter panel is across said opening and prior to opening of said closing means.

Claim 14

Apparatus having a fluid passageway having opposite ends and a chamber having an opening connecting with the passageway intermediate its ends, a filter panel, means connected to the filter panel for moving it between a first position across the passageway for accumulating particulate material from said fluid on its upstream side and a second position into and across the opening and removed from across the passageway and with its upstream side facing said chamber, means for sealing between the periphery of the filter panel and said opening during movement of said filter panel toward said second position, and means connecting with said chamber for withdrawing fluid therefrom so as to cause fluid to flow through the filter panel and into said chamber when the periphery of said filter panel is sealed with respect to said opening.

Claim 15

Apparatus having a fluid passageway having opposite ends and a chamber having an opening connecting with the passageway intermediate its ends, a filter panel, means connected to the filter panel for moving it between a first position across the passageway for accumulating particulate material from said fluid on its upstream side and a second position into and across the opening and removed from across the passageway and with its upstream side facing said chamber, means for sealing between the periphery of the filter panel and said opening during movement of said filter panel toward said second position, and means connecting with said chamber for withdrawing fluid therefrom so as to cause fluid to flow through the filter panel and into said chamber when the periphery of said filter panel is sealed with respect to said opening.

Claim 16

Apparatus of the character defined in claim 13, including means providing a surface within said opening for jarring the filter panel upon movement of the filter panel into said second position.

Claim 17

Apparatus of the character defined in claim 13, wherein said sealing means comprises a carrier ring movable axially within said opening and having a sealing surface engageable by the periphery of said filter panel upon movement of said filter panel toward said second position, a seal ring carried by the carrier ring for sealably sliding within said opening, and spring means within said opening yieldably urging said carrier ring toward the connection of said opening with said passageway.

Claim 18

Apparatus of the character defined in claim 15, including means providing a surface within said opening for jarring the filter panel upon movement of said filter panel into said second position.

Claim 19

Apparatus having a fluid passageway having opposite ends and a chamber having an opening connecting with the passageway intermediate its ends, a filter panel, means connected to the filter panel for moving it between a first position across the passageway for accumulating particulate material from said fluid on its upstream side facing said chamber and a second position into and across the opening and removed from across the passageway and with its upstream side facing said chamber, means normally closing said opening on the upstream side of the filter panel in its second position, means for sealing between the periphery of the filter panel and said opening during movement of said filter paneL toward said second position, means for opening the closing means upon continued movement of the filter panel toward said second position, and means connecting with said chamber for withdrawing fluid therefrom so as to cause fluid to flow through the filter panel and into said chamber upon opening of said closing means.

Claim 20

Apparatus having a fluid passageway having opposite ends and a chamber having an opening connecting with the passageway intermediate its ends, a filter panel, means connected to the filter panel for moving it between a first position across the passageway for accumulating particulate material from said fluid on its upstream side facing said chamber and a second position into and across the opening and removed from across the passageway and with its upstream side facing said chamber, means normally closing said opening on the upstream side of the filter panel in its second position, means for sealing between the periphery of the filter panel and said opening during movement of said filter paneL toward said second position, means for opening the closing means upon continued movement of the filter panel toward said second position, and means connecting with said chamber for withdrawing fluid therefrom so as to cause fluid to flow through the filter panel and into said chamber upon opening of said closing means.

Claim 21

Apparatus of the character defined in claim 17, wherein said means normally closing said opening comprises louvers which are spring pressed to closed position.

Claim 22

Apparatus of the character defined in claim 18, including means on the filter panel for moving said louvers to open position.

Claim 23

Apparatus of the character defined in claim 17, including means providing a surface within said opening for jarring the filter panel upon continued movement of said filter panel into said second position.

Claim 24

Apparatus of the character defined in claim 17, wherein said sealing means comprises a carrier ring movable axially within said opening and having a sealing surface engageable by the periphery of said filter panel upon movement of said filter panel toward said second position, a seal ring carried by the carrier ring for sealably sliding within said opening, and spring means within said opening yieldably urging said carrier ring toward the connection of said opening with said passageway.

Claim 25

Apparatus of the character defined in claim 21, including means proviidng a surface within said opening for jarring the filter panel upon continued movement of said filter panel into said second position.