Patents by Inventor Josef A. Blach
Josef A. Blach has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10414081Abstract: In a multi-shaft extruder for the processing of free-flowing material having a barrel and a plurality of co-rotating, tightly intermeshing conveyor shafts (1 to 3) arranged in parallel which have at least two flights and are each guided in a bore (1? to 3?) in the barrel, each conveyor shaft (1 to 3) is spaced with the ridge (O) of one of its flights from the bore wall (1?, 2?, 3?) by a clearance over at least part of the processing length of the extruder, whereas a gap is formed between the ridge (a, b, c) of another of its flights and the bore wall (1?, 2?, 3?).Type: GrantFiled: November 21, 2014Date of Patent: September 17, 2019Assignee: BLACH VERWALTUNGS GMBH & CO. KGInventor: Josef A. Blach
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Publication number: 20150138909Abstract: In a multi-shaft extruder for the processing of free-flowing material having a barrel and a plurality of co-rotating, tightly intermeshing conveyor shafts (1 to 3) arranged in parallel which have at least two flights and are each guided in a bore (1? to 3?) in the barrel, each conveyor shaft (1 to 3) is spaced with the ridge (O) of one of its flights from the bore wall (1?, 2?, 3?) by a clearance over at least part of the processing length of the extruder, whereas a gap is formed between the ridge (a, b, c) of another of its flights and the bore wall (1?, 2?, 3?).Type: ApplicationFiled: November 21, 2014Publication date: May 21, 2015Inventor: Josef A. BLACH
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Patent number: 8783939Abstract: An extruder is provided that has a housing with at least two axially parallel shafts which are capable of being driven in the same direction and with at least two-flight intermeshing conveying elements stripping each other at an axial distance (Ax) with a small clearance over the entire circumference. The extruder has a distance between the comb of the at least one further flight and the inner wall of the housing. Each conveying element has at least two conveying sections rotated through an angle, wherein each conveying section has an axial length corresponding to at most the outer diameter of the conveying element.Type: GrantFiled: July 16, 2009Date of Patent: July 22, 2014Assignee: Blach Verwaltungs GmbH & Co. KGInventor: Josef A. Blach
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Patent number: 8562203Abstract: An extruder comprises a displacement part with a housing, inside of which at least one screw shaft is housed and which is provided, at one end, with a material entry opening for the material to be processed and, at the other end, with a material outlet opening for the processed material, and with an intermediate opening between the material entry opening and the material outlet opening for discharging gas from the displacement part. A material retaining device is connected to said intermediate opening and has at least one screw shaft inside an intermediate housing. This screw shaft extends from the intermediate opening to a gas discharge opening in the intermediate housing and conveys material entering the intermediate housing back into the displacement part.Type: GrantFiled: September 22, 2005Date of Patent: October 22, 2013Assignee: Blach Verwaltungs GmbHInventor: Josef A. Blach
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Patent number: 8434928Abstract: In the case of an extruder with at least two parallel, rotating shafts turning in the same direction, the shafts are equipped with interlocking feed screw segments (24) and working segments (26). The working segments (26), which lead to a greater spread between the two shafts than the feed screw segments (24), are formed as a single piece as a combined element (22) using the feed screw segment (24).Type: GrantFiled: October 7, 2005Date of Patent: May 7, 2013Assignee: Blach Verwaltungs GmbH & Co. KGInventor: Josef A. Blach
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Patent number: 8381618Abstract: For driving an extruder (1) having disposed along a circle a plurality of shafts (3) with processing elements (4), the shafts (3) are connected to the output shafts (11) of a gearing (7) which are provided with output pinions (12, 13). The output pinions (12, 13) are disposed axially offset so that adjacent output shafts (11) have a different length (L1, L2) between the end facing the extruder (1) and the output pinion (12, 13). The axially offset output pinions (12, 13) are in engagement each with a sun gear (18, 19). One sun gear (19) is connected to a hollow torque shaft (21) and the other sun gear (18) to an inner torque shaft (22) disposed therewithin. The hollow torque shaft (21) and the inner torque shaft (22) are configured such that the difference in torsional rotation angle caused by the different length (L1, L2) of the output shafts (11) is compensated by a different torsion of the hollow torque shaft (21) and the inner torque shaft (22).Type: GrantFiled: May 2, 2009Date of Patent: February 26, 2013Inventor: Josef A. Blach
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Publication number: 20120188840Abstract: An extruder is provided that has a housing with at least two axially parallel shafts which are capable of being driven in the same direction and with at least two-flight intermeshing conveying elements stripping each other at an axial distance (Ax) with a small clearance over the entire circumference. The extruder has a distance between the comb of the at least one further flight and the inner wall of the housing. Each conveying element has at least two conveying sections rotated through an angle, wherein each conveying section has an axial length corresponding to at most the outer diameter of the conveying element.Type: ApplicationFiled: July 17, 2009Publication date: July 26, 2012Inventor: Josef A. Blach
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Patent number: 8172450Abstract: In an extruder wherein the slip-on elements (1) have a cross-sectional profile comprising circular arcs corresponding to the maximum slip-on element diameter, the slip-on element core diameter and the center distance of the slip-on elements (1), the slip-on element (1) has no shaft-to-hub connection in the area of the circular arc corresponding to the slip-on element core diameter and/or it is provided at its ends with reinforcement segments (13, 14).Type: GrantFiled: October 12, 2006Date of Patent: May 8, 2012Assignee: Blach Verwaltungs GmbH & Co. KGInventor: Josef A. Blach
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Publication number: 20110177901Abstract: For driving an extruder (1) having disposed along a circle a plurality of shafts (3) with processing elements (4), the shafts (3) are connected to the output shafts (11) of a gearing (7) which are provided with output pinions (12, 13). The output pinions (12, 13) are disposed axially offset so that adjacent output shafts (11) have a different length (L1, L2) between the end facing the extruder (1) and the output pinion (12, 13). The axially offset output pinions (12, 13) are in engagement each with a sun gear (18, 19). One sun gear (19) is connected to a hollow torque shaft (21) and the other sun gear (18) to an inner torque shaft (22) disposed therewithin. The hollow torque shaft (21) and the inner torque shaft (22) are configured such that the difference in torsional rotation angle caused by the different length (L1, L2) of the output shafts (11) is compensated by a different torsion of the hollow torque shaft (21) and the inner torque shaft (22).Type: ApplicationFiled: May 2, 2009Publication date: July 21, 2011Inventor: Josef A. Blach
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Patent number: 7654726Abstract: A multiple-shaft extruder comprises a core (4) with outward leading channels that can be flown through by a cooling liquid. At least two housing segments (16 to 19) are each provided with a cooling circuit with interconnected cooling bore holes (28), which can be flown through by a cooling liquid, are distributed in the peripheral direction and in an axially parallel manner, and which are located on the section of the housing segments (16 to 19) that faces the process chamber (2).Type: GrantFiled: March 19, 2004Date of Patent: February 2, 2010Inventor: Josef A. Blach
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Publication number: 20090274003Abstract: In an extruder wherein the slip-on elements (1) have a cross-sectional profile comprising circular arcs corresponding to the maximum slip-on element diameter, the slip-on element core diameter and the center distance of the slip-on elements (1), the slip-on element (1) has no shaft-to-hub connection in the area of the circular arc corresponding to the slip-on element core diameter and/or it is provided at its ends with reinforcement segments (13, 14).Type: ApplicationFiled: October 12, 2006Publication date: November 5, 2009Inventor: Josef A. Blach
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Patent number: 7594453Abstract: To drive an extruder which has several axially parallel shafts rotating in the same direction, with conveyor elements, arranged around a circle at equal angles with respect to each other, the shafts are attached to the driven shafts of a gear system. Each driven shaft has a pinion, and each driven pinion engages both with an externally-toothed drive wheel and with an internally-toothed hollow gear wheel. The externally-toothed drive wheel and the internally-toothed hollow gear wheel are driven with the same torque.Type: GrantFiled: February 27, 2004Date of Patent: September 29, 2009Inventor: Josef A. Blach
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Publication number: 20090040863Abstract: In the case of an extruder with at least two parallel, rotating shafts turning in the same direction, the shafts are equipped with interlocking feed screw segments (24) and working segments (26). The working segments (26), which lead to a greater spread between the two shafts than the feed screw segments (24), are formed as a single piece as a combined element (22) using the feed screw segment (24).Type: ApplicationFiled: October 7, 2005Publication date: February 12, 2009Inventor: Josef A. Blach
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Publication number: 20080259717Abstract: An extruder comprises a displacement part with a housing, inside of which at least one screw shaft is housed and which is provided, at one end, with a material entry opening for the material to be processed and, at the other end, with a material outlet opening for the processed material, and with an intermediate opening between the material entry opening and the material outlet opening for discharging gas from the displacement part. A material retaining device is connected to said intermediate opening and has at least one screw shaft inside an intermediate housing. This screw shaft extends from the intermediate opening to a gas discharge opening in the intermediate housing and conveys material entering the intermediate housing back into the displacement part.Type: ApplicationFiled: September 22, 2005Publication date: October 23, 2008Inventor: Josef A. Blach
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Patent number: 7425090Abstract: An apparatus for dispersing and melting flowable substances includes axis-parallel supporting shafts rotatable in the same direction. Screw elements with the same direction of thread are fitted on the shafts so as to rotate in unison and intermesh. The screw elements have screw portions disposed at a progressive angular offset from each other with the same sense of rotation so as to form faces. The screw elements are of single- or double-flighted form. The axial length of each screw element is a fraction of the pitch of the screw crest of each screw portion.Type: GrantFiled: December 12, 2002Date of Patent: September 16, 2008Assignee: Blach Verwaltungs GmbH & Co. KGInventor: Josef A. Blach
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Patent number: 7284897Abstract: An extruder has at least three parallel, co-rotating shafts disposed in a cavity therein along a circle. The shafts are equipped with screw elements closely intermeshing over their whole circumference. At least one screw element is formed as a passage screw element with recesses in the screw crest, screw core and/or screw flank. Downstream of a supply port an element is provided for inhibiting the product flow in the flight of the passage screw element. A degassing opening is located downstream and adjacent the inhibiting element.Type: GrantFiled: May 14, 2003Date of Patent: October 23, 2007Assignee: Blach Verwaltungs GmbH & Co. KGInventor: Josef A. Blach
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Patent number: 7270471Abstract: In an extruder for continuous working and/or processing of flowable substances having at least two parallel, corotating shafts equipped with intermeshing screw elements whose face is limited by circular arcs corresponding to the outside screw diameter, the screw core diameter and at most the center distance of the screw elements, and guided on circular segments of the extruder housing that are parallel to the shafts, at least one screw element (1) has a plurality of concentric ring portions (8) spaced a distance apart and formed by grooves (12) turned into the screw element (1).Type: GrantFiled: May 14, 2003Date of Patent: September 18, 2007Assignee: Blach Verwaltungs GmbH & Co. KGInventor: Josef A. Blach
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Patent number: 7025491Abstract: An apparatus for homogenizing and/or dispersing at least one viscous substance and at least one solid and/or at least one other substance of different viscosity includes in a space in a housing axis-parallel rotatable shafts disposed along a circle with equal central-angle distance and provided with tightly intermeshing screw elements. The shafts in the area outside the openings in the housing are provided with screw elements having a pitch (S) of at most three quarters of the outside screw diameter (D) over a length (L=L1+L2+L3) corresponding to at least ten times the outside diameter (D) of the screw elements.Type: GrantFiled: May 8, 2002Date of Patent: April 11, 2006Assignee: 3+Extruder GmbHInventors: Josef A. Blach, Markus Blach, Michael Blach
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Publication number: 20040141405Abstract: An apparatus for homogenizing and/or dispersing at least one viscous substance and at least one solid and/or at least one other substance of different viscosity has in a space (3) in the housing (1) axis-parallel rotatable shafts (4) disposed along a circle with equal central-angle distance and provided with tightly intermeshing screw elements (6). The shafts (4) in the area outside the openings (9, 11, 12) in the housing (1) are provided with screw elements (6) having a pitch (S) of at most three quarters of the outside screw diameter (D) over a length (L=L1+L2+L3) corresponding to at least ten times the outside diameter (D) of the screw elements (6).Type: ApplicationFiled: November 7, 2003Publication date: July 22, 2004Inventors: Josef A. Blach, Markus Blach, Michael Blach
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Patent number: 6227693Abstract: In order to position the screw elements (6) axially precisely on the shafts (1) of a multi-shaft screw-type machine, a split stop ring (8) against which the screw elements (6) are prestressed is provided in a first ring groove (9) of the shaft (1). Spaced from the first ring groove (9), a second ring groove (11) with a screw thread (14) is provided. A straining ring (18) to be prestressed against the stop ring (8) and connected with the shaft (1) so as to rotate in unison is in screw connection with the screw thread (14).Type: GrantFiled: September 9, 1999Date of Patent: May 8, 2001Inventors: Josef A. Blach, Michael Blach, Markus Blach