# US 4,397,744 A · Filter cloth suspension device for a filter press > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,397,744 A - Document ID: US4397744A - Status: Granted - Kind: A - Application number: 06/277,842 - Filed: 1981-06-26 - Granted: 1983-08-09 - Earliest claimed: 1980-09-19 - Assignees: Kurita Machinery Manufacturing Company Limited - Inventors: Hamazaki Haruo - Web page: https://patentgrep.com/patent/US4397744A ## CPC - B01D 25/127: with one or more movable filter bands arranged to be clamped between the press plates or between a plate and a frame during filtration, e.g. zigzag endless filter bands (B01D25/172, B01D25/176, B01D25/19 take precedence) - B01D 25/322: {specially for chamber filter presses} - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract The upper ends of filter cloths attached to two adjacent filter plates are connected to a filter medium hanger suspended from suspension arms pivotally mounted on one of the filter plates in the upper regions on opposite sides thereof. Arm rests for supporting the suspension arms are provided on the other filter plate in the upper regions on opposite sides thereof. When the filter plates are moved from their closed state for filtration to their opened state upon completion of filtration, the suspension arms, tilting as supported by the arm rests, are caused to vibrate, thereby accelerating the stripping of the cake which has accumulated on the filter cloths connected to the filter medium hanger. ## Claims ### Claim 1 A filter medium suspension device for a filter press having a plurality of filter plates defining opposite abuttable faces and opposite sides, and including first and second adjacent filter plates, said filter medium suspension device comprising a pair of filter medium suspension arms each having a first free end and a second end pivotally mounted at said second end thereof on opposite sides of said first filter plates, said arms extending at an angle upwardly from said second end, a filter medium hanger means suspended from said arms suspending a filter medium by an upper end of the filter medium; said filter medium disposed between said first and second adjacent filter plates, and a pair of filter medium suspension arm rest means each installed on said second filter plate adjacent the opposite sides thereof for supporting by sliding contact said first free ends of said filter medium suspension arms and for providing that the attitude of said filter medium suspension arms is changed as said first and second filter plates are displaced with respect to each other. ### Claim 2 (depends on 1) A filter medium suspension device for filter presses as set forth in claim 1, wherein said filter medium hanger means comprises an elastic member. ### Claim 3 (depends on 2) A filter medium suspension device for filter presses as set forth in claim 2, wherein said elastic member comprises a spring. ### Claim 4 (depends on 2) A filter medium suspension device for filter presses as set forth in claim 2, wherein said elastic member comprises a rubber string. ### Claim 5 (depends on 1) A filter medium suspension device for filter presses as set forth in claim 1, wherein each filter medium suspension arm has a corrugated surface in sliding contact with said arm rest means. ### Claim 6 (depends on 1, 5) A filter medium suspension device for filter presses as set forth in claim 1 or claim 5, wherein said arm rest means is adjustably mounted on said second filter plate so that its arm supporting level can be changed with respect to said filter medium suspension arm. ### Claim 7 (depends on 6) A filter medium suspension device for filter presses as set forth in claim 6, wherein said arm rest means is vertically movably installed on said second filter plate. ### Claim 8 (depends on 6) A filter medium suspension device for filter presses as set forth in claim 6, wherein each of said arm rest means has an arm support surface of varying height extending in the direction of the length of the upper end of said second filter plate to allow adjustment of the position of said arm rest means in said direction. ### Claim 9 (depends on 8) A filter medium suspension device for filter presses as set forth in claim 8, wherein said varying height arm support surface comprises a stepped surface. ### Claim 10 (depends on 8) A filter medium suspension device for filter presses as set forth in claim 8, wherein said varying height arm support surface comprises an incline surface.