Patents by Inventor Piotr Andrzej Flacht
Piotr Andrzej Flacht 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: 11131362Abstract: A hydraulic damper for a vehicle including a main tube. A first piston assembly is slideably disposed in the main tube and axially divides the main tube into a rebound chamber and a primary compression chamber. A hydraulic compression stop assembly is disposed in the primary compression chamber and includes a narrowed section extending between an open end and a closed end. A second piston assembly is slideably disposed in the narrowed section and is coupled with the first piston assembly. The second piston assembly has a piston tube that extends between an opened end and a shut end. A displaceable partition is slideably disposed in the piston tube. A first auxiliary compression chamber is defined between the partition and the closed end of the narrowed section. A second auxiliary compression chamber is defined between the partition and the shut end of the piston tube.Type: GrantFiled: April 21, 2020Date of Patent: September 28, 2021Assignee: BEIJINGWEST INDUSTRIES CO., LTD.Inventor: Piotr Andrzej Flacht
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Patent number: 10746252Abstract: A shock absorber having a main tube extends between a first end and a second end defining a fluid chamber therebetween. A main piston is slidably disposed in the fluid chamber dividing the fluid chamber into a compression chamber and a rebound chamber. A piston rod is attached to the main piston. A hydraulic compression stop including an additional piston is attached to the piston rod for movement therewith. The additional piston includes a body extending from the piston rod and defining a conduit extending along the center axis. An actuator is disposed in the conduit and attached to the body movable from a closed position to an open position during the compression stroke with the open position allowing fluid flow through the actuator and the conduit and the closed position preventing fluid flow through the actuator. The actuator includes a spring and a blocking member disposed in the conduit.Type: GrantFiled: August 31, 2018Date of Patent: August 18, 2020Assignee: BEIJINGWEST INDUSTRIES CO., LTD.Inventors: Piotr Andrzej Flacht, Dominik Kasprzyk
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Publication number: 20200248775Abstract: A hydraulic damper for a vehicle including a main tube. A first piston assembly is slideably disposed in the main tube and axially divides the main tube into a rebound chamber and a primary compression chamber. A hydraulic compression stop assembly is disposed in the primary compression chamber and includes a narrowed section extending between an open end and a closed end. A second piston assembly is slideably disposed in the narrowed section and is coupled with the first piston assembly. The second piston assembly has a piston tube that extends between an opened end and a shut end. A displaceable partition is slideably disposed in the piston tube. A first auxiliary compression chamber is defined between the partition and the closed end of the narrowed section. A second auxiliary compression chamber is defined between the partition and the shut end of the piston tube.Type: ApplicationFiled: April 21, 2020Publication date: August 6, 2020Inventor: Piotr Andrzej Flacht
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Patent number: 10683906Abstract: The present invention relates to a hydraulic comprising a compression stop assembly located in a compression chamber and the compression stop assembly comprises a body; an axial member disposed slidably within said body; a covering member fixed on said axial member and provided with at least one compression flow channel and at least one rebound flow channel; a disengaging spring preloaded between said body and said covering member. The compression stop assembly further comprises a rotating member disposed pivotally with respect to said body and capable of covering at least partially said at least one compression flow channel depending on the angular position of said rotating member with respect to said at least one compression flow channel; and at least one cam configured to cooperate with said rotating member in order to change its angular position with respect to its axial displacement.Type: GrantFiled: November 17, 2017Date of Patent: June 16, 2020Assignee: BEIJINGWEST INDUSTRIES CO., LTD.Inventors: Pawel Edward Kus, Piotr Andrzej Flacht, Piotr Stanislaw Suprewicz
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Patent number: 10670107Abstract: A hydraulic damper for a vehicle including a main tube. A first piston assembly is slideably disposed in the main tube and axially divides the main tube into a rebound chamber and a primary compression chamber. A hydraulic compression stop assembly is disposed in the primary compression chamber and includes a narrowed section extending between an open end and a closed end. A second piston assembly is slideably disposed in the narrowed section and is coupled with the first piston assembly. The second piston assembly has a piston tube that extends between an opened end and a shut end. A displaceable partition is slideably disposed in the piston tube. A first auxiliary compression chamber is defined between the partition and the closed end of the narrowed section. A second auxiliary compression chamber is defined between the partition and the shut end of the piston tube.Type: GrantFiled: December 15, 2017Date of Patent: June 2, 2020Assignee: BEIJINGWEST INDUSTRIES CO., LTD.Inventor: Piotr Andrzej Flacht
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Patent number: 10527122Abstract: A hydraulic damper includes a hydraulic compression stop arrangement having an insert including a bottom and a fixing member including a body. The bottom is attached to the body through a locking connection preventing axial movement of the insert and transferring pressure exerted on the insert to the fixing member and allowing the cavity of the insert to receive the additional piston during the compression stroke to provide an additional damping force. The body includes a locking plate and the bottom includes a locking yoke with the locking yoke being secured to the locking plate to define the locking connection. The fixing member includes a head and the locking plate extends radially outwardly from the head defining a recess extending about the center axis. The locking yoke, having an arcuate shape and an L-shaped cross section, extends axially outwardly from the bottom to engage the recess forming the locking connection.Type: GrantFiled: December 28, 2017Date of Patent: January 7, 2020Assignee: BEIJINGWEST INDUSTRIES CO., LTD.Inventors: Pawel Edward Kus, Piotr Andrzej Flacht
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Publication number: 20190186584Abstract: A hydraulic damper for a vehicle including a main tube. A first piston assembly is slideably disposed in the main tube and axially divides the main tube into a rebound chamber and a primary compression chamber. A hydraulic compression stop assembly is disposed in the primary compression chamber and includes a narrowed section extending between an open end and a closed end. A second piston assembly is slideably disposed in the narrowed section and is coupled with the first piston assembly. The second piston assembly has a piston tube that extends between an opened end and a shut end. A displaceable partition is slideably disposed in the piston tube. A first auxiliary compression chamber is defined between the partition and the closed end of the narrowed section. A second auxiliary compression chamber is defined between the partition and the shut end of the piston tube.Type: ApplicationFiled: December 15, 2017Publication date: June 20, 2019Inventor: Piotr Andrzej Flacht
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Publication number: 20190162266Abstract: A shock absorber having a main tube extends between a first end and a second end defining a fluid chamber therebetween. A main piston is slidably disposed in the fluid chamber dividing the fluid chamber into a compression chamber and a rebound chamber. A piston rod is attached to the main piston. A hydraulic compression stop including an additional piston is attached to the piston rod for movement therewith. The additional piston includes a body extending from the piston rod and defining a conduit extending along the center axis. An actuator is disposed in the conduit and attached to the body movable from a closed position to an open position during the compression stroke with the open position allowing fluid flow through the actuator and the conduit and the closed position preventing fluid flow through the actuator. The actuator includes a spring and a blocking member disposed in the conduit.Type: ApplicationFiled: August 31, 2018Publication date: May 30, 2019Inventors: Piotr Andrzej Flacht, Dominik Kasprzyk
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Patent number: 10167921Abstract: A hydraulic damper including a tube. A piston assembly is disposed slidably inside the tube and divides the tube into a rebound chamber and a compression chamber. A fluid compensation chamber is located outside of the tube. A base valve assembly controls the flow of the fluid between the compression and compensation chambers. A hydro-mechanical compression stop assembly includes a covering member that overlies the base valve assembly and defines a main flow channel and an auxiliary flow channel that each fluidly connect the compression chamber and the base valve assembly. A closing member selectively closes the main flow channel. A first telescoping sleeve is coupled with the piston assembly and a second telescoping sleeve has a base connected to the closing member. A first spring is compressed between the piston assembly and the base to bias the closing member in an extended position.Type: GrantFiled: April 18, 2017Date of Patent: January 1, 2019Assignee: BEIJINGWEST INDUSTRIES CO., LTD.Inventors: Piotr Andrzej Flacht, Radoslaw Pawel Grzesik, Jakub Wrzesinski
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Patent number: 10107352Abstract: A hydraulic damper for a motor vehicle including a tube having a main section and a narrowed section. A main piston assembly is disposed inside the main section. A main piston rod is attached to the main piston assembly. A secondary rod is coupled with the main piston rod. A spring seat is disposed about the secondary rod. A spring engages the spring seat and preloads the spring seat. A secondary piston is disposed about and coupled with the secondary rod. The secondary piston has an axial projection and an annular projection that abuts the spring seat. The annular projection defines a plurality of axial slots. A retaining member is fixed to the secondary rod and has an outer face defining a plurality of radial slots. A sealing ring is slidably disposed about the axial projection. An annular channel is defined radially between the sealing ring and the axial projection.Type: GrantFiled: March 28, 2017Date of Patent: October 23, 2018Assignee: BeijingWest Industries Co., Ltd.Inventors: Radoslaw Pawel Grzesik, Piotr Andrzej Flacht
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Publication number: 20180223942Abstract: A hydraulic damper includes a hydraulic compression stop arrangement having an insert including a bottom and a fixing member including a body. The bottom is attached to the body through a locking connection preventing axial movement of the insert and transferring pressure exerted on the insert to the fixing member and allowing the cavity of the insert to receive the additional piston during the compression stroke to provide an additional damping force. The body includes a locking plate and the bottom includes a locking yoke with the locking yoke being secured to the locking plate to define the locking connection. The fixing member includes a head and the locking plate extends radially outwardly from the head defining a recess extending about the center axis. The locking yoke, having an arcuate shape and an L-shaped cross section, extends axially outwardly from the bottom to engage the recess forming the locking connection.Type: ApplicationFiled: December 28, 2017Publication date: August 9, 2018Inventors: Pawel Edward Kus, Piotr Andrzej Flacht
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Publication number: 20180156302Abstract: The present invention relates to a hydraulic comprising a compression stop assembly located in a compression chamber and the compression stop assembly comprises a body; an axial member disposed slidably within said body; a covering member fixed on said axial member and provided with at least one compression flow channel and at least one rebound flow channel; a disengaging spring preloaded between said body and said covering member. The compression stop assembly further comprises a rotating member disposed pivotally with respect to said body and capable of covering at least partially said at least one compression flow channel depending on the angular position of said rotating member with respect to said at least one compression flow channel; and at least one cam configured to cooperate with said rotating member in order to change its angular position with respect to its axial displacement.Type: ApplicationFiled: November 17, 2017Publication date: June 7, 2018Inventors: Pawel Edward Kus, Piotr Andrzej Flacht, Piotr Stanislaw Suprewicz
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Patent number: 9964171Abstract: A damper assembly (20) is disclosed, and it comprises: a first rube (22) defining an inner surface (24) extending along an axis (A) to define a fluid chamber (30) containing a damping fluid (32); a rod (34) extending axially in the first rube (22); a guide (40) annularly disposed about the rod (34) and engaging the first tube (22); a piston (42) and a retainer (46) which are attached to the rod (34) and are slidably disposed in the first tube (22); a first spring (50) engaging and extending axially away from the retainer (46); a valve body (52) which is disposed adjacent to the first spring (50) and has a periphery (54) spaced from the inner surface (24) of the first tube (22) to define an annular channel (60); a second spring (66) extending axially away from the valve body (52); a bumper (68) engaging the second spring (66). The valve body (52) moves into sealing engagement with the retainer (46) in response to the bumper (68) engaging the guide (40).Type: GrantFiled: December 25, 2014Date of Patent: May 8, 2018Assignee: BeijingWest Industries Co., Ltd.Inventors: Lukasz Karol Firek, Radoslaw Pawel Grzesik, Piotr Andrzej Flacht, Pawel Edward Kus
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Publication number: 20170328439Abstract: A hydraulic damper including a tube. A piston assembly is disposed slidably inside the tube and divides the tube into a rebound chamber and a compression chamber. A fluid compensation chamber is located outside of the tube. A base valve assembly controls the flow of the fluid between the compression and compensation chambers. A hydro-mechanical compression stop assembly includes a covering member that overlies the base valve assembly and defines a main flow channel and an auxiliary flow channel that each fluidly connect the compression chamber and the base valve assembly. A closing member selectively closes the main flow channel. A first telescoping sleeve is coupled with the piston assembly and a second telescoping sleeve has a base connected to the closing member. A first spring is compressed between the piston assembly and the base to bias the closing member in an extended position.Type: ApplicationFiled: April 18, 2017Publication date: November 16, 2017Inventors: Piotr Andrzej Flacht, Radoslaw Pawel Grzesik, Jakub Wrzesinski
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Publication number: 20170314636Abstract: A hydraulic damper for a motor vehicle including a tube having a main section and a narrowed section. A main piston assembly is disposed inside the main section. A main piston rod is attached to the main piston assembly. A secondary rod is coupled with the main piston rod. A spring seat is disposed about the secondary rod. A spring engages the spring seat and preloads the spring seat. A secondary piston is disposed about and coupled with the secondary rod. The secondary piston has an axial projection and an annular projection that abuts the spring seat. The annular projection defines a plurality of axial slots. A retaining member is fixed to the secondary rod and has an outer face defining a plurality of radial slots. A sealing ring is slidably disposed about the axial projection. An annular channel is defined radially between the sealing ring and the axial projection.Type: ApplicationFiled: March 28, 2017Publication date: November 2, 2017Inventors: Radoslaw Pawel Grzesik, Piotr Andrzej Flacht
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Publication number: 20170219043Abstract: A damper assembly (20) is disclosed, and it comprises: a first rube (22) defining an inner surface (24) extending along an axis (A) to define a fluid chamber (30) containing a damping fluid (32); a rod (34) extending axially in the first rube (22); a guide (40) annularly disposed about the rod (34) and engaging the first tube (22); a piston (42) and a retainer (46) which are attached to the rod (34) and are slidably disposed in the first tube (22); a first spring (50) engaging and extending axially away from the retainer (46); a valve body (52) which is disposed adjacent to the first spring (50) and has a periphery (54) spaced from the inner surface (24) of the first tube (22) to define an annular channel (60); a second spring (66) extending axially away from the valve body (52); a bumper (68) engaging the second spring (66). The valve body (52) moves into sealing engagement with the retainer (46) in response to the bumper (68) engaging the guide (40).Type: ApplicationFiled: December 25, 2014Publication date: August 3, 2017Inventors: Lukasz Karol Firek, Radoslaw Pawel Grzesik, Piotr Andrzej Flacht, Pawel Edward Kus
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Patent number: 9546707Abstract: Provided is a hydraulic damper with a position dependent valve assembly (3) to prevent abrupt stop of a piston at the end of the compression stroke. The position dependent valve assembly (3) comprises a supporting member (31) partitioning damper (2) internal tube (22) and provided with an axial opening (312), an axial member (32) disposed slidably within said axial opening (312) of said supporting member (31), a rigid body (33) fixed on said axial member (32), a compression stroke disc assembly (35) and a rebound stroke disc assembly (34) fixed on said axial member (32).Type: GrantFiled: December 3, 2012Date of Patent: January 17, 2017Assignee: BeijingWest Industries Co., Ltd.Inventors: Pawel Edward Kus, Radoslaw Pawel Grzesik, Piotr Andrzej Flacht, Lukasz Karol Firek
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Patent number: 9334919Abstract: A hydraulic damper (1) includes an orifice plate (33) provided with an axial projection (334) and a number of rebound flow passages (332) disposed around the projection (334). A deflectable disc (91) and an elliptical disc (92) is disposed slidably one on top of the other over the axial projection (334) to cover a compression side of the rebound flow passages (332). A cage member (34) is fixed to a piston assembly at the compression side thereof and is provided with at least one passage (341, 343). A compression spring (95) is preloaded between the cage member (34) and the discs (91, 92) to normally close the compression side of the rebound flow passages (332).Type: GrantFiled: March 27, 2012Date of Patent: May 10, 2016Assignee: Beijing West Industries Co. Ltd.Inventors: Piotr Andrzej Flacht, Radoslaw Pawel Grzesik
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Publication number: 20150204410Abstract: A hydraulic damper (1) includes an orifice plate (33) provided with through rebound flow means and rebound valve means which cover a compression side of the through rebound flow means. A cage member (34) is fixed to a piston assembly at the compression side thereof and is provided with at least one passage (341, 343). A compression spring (95) is preloaded between the cage member (34) and the rebound valve means to normally close the compression side of the through rebound flow means. The orifice plate (33) includes an axial projection (334) and the through rebound flow means include a number of rebound flow passages (332) disposed around the projection (334). The rebound valve means comprise a deflectable disc (91) and an elliptical disc (92) disposed slidably one on top of the other over the axial projection (334).Type: ApplicationFiled: March 27, 2012Publication date: July 23, 2015Inventors: Piotr Andrzej Flacht, Radoslaw Pawel Grzesik
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Publication number: 20150204411Abstract: Provided is a hydraulic damper with a position dependent valve assembly (3) to prevent abrupt stop of a piston at the end of the compression stroke. The position dependent valve assembly (3) comprises a supporting member (31) partitioning damper (2) internal tube (22) and provided with an axial opening (312), an axial member (32) disposed slidably within said axial opening (312) of said supporting member (31), a rigid body (33) fixed on said axial member (32), a compression stroke disc assembly (35) and a rebound stroke disc assembly (34) fixed on said axial member (32).Type: ApplicationFiled: December 3, 2012Publication date: July 23, 2015Inventors: Pawel Edward Kus, Radoslaw Pawel Grzesik, Piotr Andrzej Flacht, Lukasz Karol Firek