Patents by Inventor Alexander Berdichevsky
Alexander Berdichevsky 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).
-
Publication number: 20120068419Abstract: A low friction seal for sealing between a shaft and a bore and includes an inner case adapted to be mounted on the shaft. An outer case is adapted to be mounted within the bore. A seal element is mounted to the inner case and includes a base portion attached to the inner case. A membrane extends from the base portion and an axially extending leg extends from the membrane. A seal lip extends from the axially extending leg and sealingly engages a radially extending portion of the outer case. As the shaft rotates, the centrifugal forces tend to cause the membrane to flex and the torque loads applied by the dynamic seal are reduced to the point that the seal lip can lift off and apply zero torque load.Type: ApplicationFiled: September 17, 2010Publication date: March 22, 2012Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventors: Alexander Berdichevsky, David Sakata, Jianbin Jiang
-
Patent number: 8066287Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.Type: GrantFiled: June 30, 2010Date of Patent: November 29, 2011Assignee: Freudenberg-NOK General PartnershipInventor: Alexander Berdichevsky
-
Patent number: 8016293Abstract: A seal assembly for sealing a space between a rotating shaft and a housing. In this regard, the seal assembly includes a rotating component connected to the shaft, and a stationary component connected to the housing. A first seal is connected to the rotating component and a second seal is connected to the stationary component. The first seal includes at least one dispersion member that generates a fluid disturbance in a region adjacent the space during rotation of the rotating component. In this manner, any contaminants that may be prone to enter the space are dispersed away from the space and prevented from entering.Type: GrantFiled: January 2, 2007Date of Patent: September 13, 2011Assignee: Freudenberg-NOK General PartnershipInventors: Zachary K. Voydatch, Alexander Berdichevsky
-
Patent number: 8011673Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.Type: GrantFiled: October 12, 2010Date of Patent: September 6, 2011Assignee: Freudenberg-NOK General PartnershipInventor: Alexander Berdichevsky
-
Publication number: 20110024990Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.Type: ApplicationFiled: October 12, 2010Publication date: February 3, 2011Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: Alexander Berdichevsky
-
Publication number: 20110024989Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.Type: ApplicationFiled: October 12, 2010Publication date: February 3, 2011Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: Alexander Berdichevsky
-
Patent number: 7854432Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.Type: GrantFiled: February 24, 2005Date of Patent: December 21, 2010Assignee: Freudenberg-NOK General PartnershipInventor: Alexander Berdichevsky
-
Patent number: 7854433Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.Type: GrantFiled: November 22, 2005Date of Patent: December 21, 2010Assignee: Freudenberg-NOK General PartnershipInventor: Alexander Berdichevsky
-
Publication number: 20100264604Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.Type: ApplicationFiled: June 30, 2010Publication date: October 21, 2010Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: Alexander Berdichevsky
-
Publication number: 20100244390Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a mounting portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the mounting portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The mounting portion defines a bumper spaced from the axially extending barrel portion by a gap distance that is designed to prevent the seal lip from inverting under sustained high pressure or pressure spikes.Type: ApplicationFiled: March 24, 2009Publication date: September 30, 2010Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventors: Alexander Berdichevsky, Rory S. Pawl, Patrick Scheib
-
Publication number: 20100219588Abstract: A dynamic seal utilizes a groove on the active side of the seal to capture a leaked lubricant and pump the lubricant back into the lubricated side of the seal. The groove stops short of the leading edge of the seal that faces the lubricant side forming a static dam between the termination point of the groove and the seal edge. When the fluid pressure within the groove exceeds the opening pressure for the seal lip, the lubricant within the groove is pumped back into the lubricant side of the seal. The groove can have an induction zone wherein the fluid pressure rise is gradual and a booster zone wherein the fluid pressure rise is relatively faster than in the induction zone. The booster zone is disposed adjacent the static dam. Bars are provided across the spiral grooves to prevent contaminants from reaching and becoming trapped in the booster zone.Type: ApplicationFiled: February 24, 2010Publication date: September 2, 2010Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventors: John A. London, Robert Scavuzzo, Alexander Berdichevsky
-
Patent number: 7775528Abstract: A bi-directional dynamic seal advantageously provides for the return of captured lubricant to the lubricant side regardless of a direction of relative rotation between the seal and the shaft. The seal utilizes a pattern of symmetrical pumping elements to facilitate the hydrodynamic pumping of the captured lubricant in response to the relative rotation. The symmetrical pumping elements have ending points that stop short of the seal edge of the seal. The seal may utilize secondary pumping elements that communicate with the primary pumping elements to capture lubricant that is not captured by the primary pumping elements.Type: GrantFiled: April 5, 2007Date of Patent: August 17, 2010Assignee: Freudenberg-NOK General PartnershipInventor: Alexander Berdichevsky
-
Patent number: 7770897Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.Type: GrantFiled: March 14, 2008Date of Patent: August 10, 2010Assignee: Freudenberg-NOK General PartnershipInventor: Alexander Berdichevsky
-
Publication number: 20100025938Abstract: A bearing seal is provided with an annular outer casing having an axially extending portion and a radially inwardly extending portion. A sleeve member is disposed within the annular casing and includes an axially extending portion adapted to be attached to a rotating shaft and a radially outwardly extending portion. An annular seal including a seal body is mounted to the annular casing. A first seal lip extends axially from the seal body and engages the radially outwardly extending portion of the sleeve member. A dual contact lip extends from the seal body and includes a first seal portion and a second seal portion each contacting the sleeve member at axially spaced locations.Type: ApplicationFiled: June 7, 2007Publication date: February 4, 2010Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventors: Alexander Berdichevsky, Kevin Randal Colby, Lori Anne Cieslinski
-
Patent number: 7494130Abstract: A bi-directional dynamic seal advantageously provides for the return of captured lubricant to the lubricant side regardless of a direction of relative rotation between the seal and the shaft. The seal utilizes a pattern of symmetrical pumping elements to facilitate the hydrodynamic pumping of the captured lubricant in response to the relative rotation. The symmetrical pumping elements have ending points that stop short of the seal edge of the seal. The seal may utilize secondary pumping elements that communicate with the primary pumping elements to capture lubricant that is not captured by the primary pumping elements.Type: GrantFiled: February 13, 2006Date of Patent: February 24, 2009Assignee: Freudenberg-NOK General PartnershipInventor: Alexander Berdichevsky
-
Patent number: 7452577Abstract: Admixtures either of a plastic and an elastomer, a plurality of thermoplastics, or a plurality of elastomers are formed into a shaped item for an article (such as a dynamic seal, a static seal, a gasket, a pump diaphragm, a hose, or an o-ring), and the thermoplastic is then cross-linked (cured). Radiation (preferably, electron beam radiation) is used for the cross-linking and for generating bi-modal molecules from the elastomer and the thermoplastic when both a thermoplastic and an elastomer are in the admixture.Type: GrantFiled: June 30, 2004Date of Patent: November 18, 2008Assignee: Freudenberg-NOK General PartnershipInventors: Edward Hosung Park, Francis Joseph Walker, Alexander Berdichevsky
-
Publication number: 20080157481Abstract: A dynamic shaft seal assembly is provided including a dynamic seal for engaging a rotary shaft. The dynamic seal includes a base portion that is mounted within a casing and has an axially extending barrel portion extending from a radially inner end of the base portion. The axially extending barrel portion terminates in a radially extending leg portion which extends inwardly from an end of the axially extending portion. A generally conically shaped seal portion extends from an end of the radially extending portion and the seal portion includes a radially inner face engaging the shaft and a radially outer face having a stiffening bead integrally formed thereon. The stiffening bead reduces the seal's propensity for “bell mouthing” while the axially extending barrel portion provides improved shaft followability for the dynamic seal.Type: ApplicationFiled: March 14, 2008Publication date: July 3, 2008Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventor: Alexander Berdichevsky
-
Publication number: 20080128997Abstract: A seal assembly for sealing a space between a rotating shaft and a housing. In this regard, the seal assembly includes a rotating component connected to the shaft, and a stationary component connected to the housing. A first seal is connected to the rotating component and a second seal is connected to the stationary component. The first seal includes at least one dispersion member that generates a fluid disturbance in a region adjacent the space during rotation of the rotating component and a discontinuity that provide a pathway for a contaminant to exit the space.Type: ApplicationFiled: February 13, 2008Publication date: June 5, 2008Applicant: Freudenberg-NOK General PartnershipInventors: Alexander Berdichevsky, Sumit Moondra, Anthony D. Joquico
-
Publication number: 20070222161Abstract: A seal assembly for sealing a space between a rotating shaft and a housing. In this regard, the seal assembly includes a rotating component connected to the shaft, and a stationary component connected to the housing. A first seal is connected to the rotating component and a second seal is connected to the stationary component. The first seal includes at least one dispersion member that generates a fluid disturbance in a region adjacent the space during rotation of the rotating component. In this manner, any contaminants that may be prone to enter the space are dispersed away from the space and prevented from entering.Type: ApplicationFiled: January 2, 2007Publication date: September 27, 2007Applicant: FREUDENBERG-NOK GENERAL PARTNERSHIPInventors: Zachary Voydatch, Alexander Berdichevsky
-
Publication number: 20070210530Abstract: A dynamic seal assembly for installation between first and second relatively rotating members, comprising a ring for fixed engagement with said first member and an annular seal extending radially from said ring and configured to slidably engage said second member, wherein said radial seal has a thickness, and a length that is from about 1 to about 15 times greater than said thickness. In various embodiments, the seal is formed of a rubber composition comprising a vulcanized fluorocarbon elastomer dispersed in a matrix of a thermoplastic polymeric material. In various embodiments, the matrix forms a continuous phase and the vulcanized elastomeric material is in the form of particles forming a non-continuous phase. The compositions may be made by combining a curative, an uncured fluorocarbon elastomer, and a thermoplastic material, and heating the mixture to effect vulcanization of the elastomeric material, while applying mechanical energy.Type: ApplicationFiled: December 13, 2006Publication date: September 13, 2007Applicant: Freudenberg-NOK General PartnershipInventors: Edward Park, Alexander Berdichevsky, Vahidin Alajbegovic