Patents by Inventor Mark C. Sitko

Mark C. Sitko 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).

  • Patent number: 12152674
    Abstract: A cassette seal is configured to seal a shaft within a housing. A shaft casing is annularly-shaped about a longitudinal axis and is configured to fixedly attach to the shaft, where the shaft casing is electrically conductive and configured to be in electrical conductivity with the shaft when attached to the shaft. A housing casing is annularly-shaped about the longitudinal axis and is configured to fixedly attach to the housing, where the housing casing is electrically conductive and configured to be in electrical conductivity with the housing when attached to the housing. A seal is disposed between the shaft and housing casing. At least one cantilevered flexural finger is attached fixedly attached to either the shaft casing or the housing casing and then in rotating abutment with the other. The at least one cantilevered flexural finger is electrically conductive and electrically connects the shaft casing to the housing casing.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: November 26, 2024
    Assignee: TRELLEBORG SEALING SOLUTIONS US, INC.
    Inventors: Mark C. Sitko, Rutuja S. Joshi
  • Patent number: 11486496
    Abstract: A seal for sealing a shaft, the seal including a seal body having an inner member, an outer member, and a connecting member connecting the inner member and the outer member. The seal also includes at least one spoke connected to the seal body. The at least one spoke is configured to stiffen the seal body.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: November 1, 2022
    Assignee: Trelleborg Sealing Solutions Germany GmbH
    Inventor: Mark C. Sitko
  • Publication number: 20220099187
    Abstract: A cassette seal is configured to seal a shaft within a housing. A shaft casing is annularly-shaped about a longitudinal axis and is configured to fixedly attach to the shaft, where the shaft casing is electrically conductive and configured to be in electrical conductivity with the shaft when attached to the shaft. A housing casing is annularly-shaped about the longitudinal axis and is configured to fixedly attach to the housing, where the housing casing is electrically conductive and configured to be in electrical conductivity with the housing when attached to the housing. A seal is disposed between the shaft and housing casing. At least one cantilevered flexural finger is attached fixedly attached to either the shaft casing or the housing casing and then in rotating abutment with the other. The at least one cantilevered flexural finger is electrically conductive and electrically connects the shaft casing to the housing casing.
    Type: Application
    Filed: September 27, 2021
    Publication date: March 31, 2022
    Applicant: Trelleborg Sealing Solutions Germany GmbH
    Inventors: Mark C. Sitko, Rutuja S. Joshi
  • Patent number: 11125646
    Abstract: A seal detection device includes at least one seal with an outer surface where the outer surface is partially made up of a lateral surface and an axial surface. The at least one seal is provided with at least one seal mark and is placed on the lateral surface or the axial surface of the at least one seal. The at least one seal may be further provided with a unique code and may be associated with relevant seal data such as seal material, date of installation, last maintenance date, next scheduled maintenance/replacement, material safety data sheet(s), etc.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: September 21, 2021
    Assignee: Trelleborg Sealing Solutions Germany GmbH
    Inventors: Mark C. Sitko, Larry J. Castleman
  • Publication number: 20210207713
    Abstract: A seal for sealing a shaft, the seal including a seal body having an inner member, an outer member, and a connecting member connecting the inner member and the outer member. The seal also includes at least one spoke connected to the seal body. The at least one spoke is configured to stiffen the seal body.
    Type: Application
    Filed: December 30, 2020
    Publication date: July 8, 2021
    Applicant: Trelleborg Sealing Solutions US, Inc.
    Inventor: Mark C. Sitko
  • Patent number: 10620132
    Abstract: A seal analysis system for measuring and analyzing a seal and a mating hardware configured to detect a defect and to analyze a condition of at least one of the seal and the mating hardware and includes a sensor and an electrical processing circuit. The sensor may be in a form of an optical inspection device, a laser scanner, a phone, or an ultrasound scanner. Additionally, the sensor may be provided to take a photo or video. The electrical processing circuit may be built in to the sensor or it may be a separate unit configured to communicate with the sensor. The electrical processing circuit may be configured to compare a condition of a seal and/or mating hardware against pre-set criteria.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: April 14, 2020
    Assignee: Trelleborg Sealing Solutions US, Inc.
    Inventors: Mark C. Sitko, Larry J. Castleman
  • Patent number: 10443733
    Abstract: A seal assembly for sealing between a first machine part and a second machine part. The first machine part has a housing groove with a side wall. The seal assembly includes a compression ring for being placed within the housing groove and a seal element for being placed within the housing groove. The seal element is energized by the compression ring and separates the compression ring from the side wall of the housing groove and the second machine part. The seal element has a seal bottom portion with a seal apex for contacting the second machine part, and a seal back portion for contacting the side wall of the housing groove. In a first position of the seal element the seal back portion extends axially inwardly from the side wall of the housing groove.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: October 15, 2019
    Assignee: Trelleborg Sealing Solutions, Inc.
    Inventors: Stephen James, Mark C. Sitko, Simone Kaare Thorndal, Gert Iversen
  • Publication number: 20190257763
    Abstract: A seal analysis system for measuring and analyzing a seal and a mating hardware configured to detect a defect and to analyze a condition of at least one of the seal and the mating hardware and includes a sensor and an electrical processing circuit. The sensor may be in a form of an optical inspection device, a laser scanner, a phone, or an ultrasound scanner. Additionally, the sensor may be provided to take a photo or video. The electrical processing circuit may be built in to the sensor or it may be a separate unit configured to communicate with the sensor. The electrical processing circuit may be configured to compare a condition of a seal and/or mating hardware against pre-set criteria.
    Type: Application
    Filed: September 11, 2018
    Publication date: August 22, 2019
    Applicant: Trelleborg Sealing Solutions US, Inc.
    Inventors: Mark C. Sitko, Larry J. Castleman
  • Publication number: 20190107203
    Abstract: A seal assembly for sealing between a first machine part and a second machine part. The first machine part has a housing groove with a side wall. The seal assembly includes a compression ring for being placed within the housing groove and a seal element for being placed within the housing groove. The seal element is energized by the compression ring and separates the compression ring from the side wall of the housing groove and the second machine part. The seal element has a seal bottom portion with a seal apex for contacting the second machine part, and a seal back portion for contacting the side wall of the housing groove. In a first position of the seal element the seal back portion extends axially inwardly from the side wall of the housing groove.
    Type: Application
    Filed: October 10, 2017
    Publication date: April 11, 2019
    Applicant: Trelleborg Sealing Solutions US, Inc.
    Inventors: Stephen James, Mark C. Sitko, Simone Kaare Thorndal, Gert Iversen
  • Publication number: 20190078972
    Abstract: A seal detection device includes at least one seal with an outer surface where the outer surface is partially made up of a lateral surface and an axial surface. The at least one seal is provided with at least one seal mark and is placed on the lateral surface or the axial surface of the at least one seal. The at least one seal may be further provided with a unique code and may be associated with relevant seal data such as seal material, date of installation, last maintenance date, next scheduled maintenance/replacement, material safety data sheet(s), etc.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Applicant: Trelleborg Sealing Solutions US, Inc.
    Inventors: Mark C. Sitko, Larry J. Castleman
  • Patent number: 5989786
    Abstract: A method of manufacturing an embossed metal gasket includes the steps of supplying a metal gasket preform having opposed first and second planar surfaces and at least one sealing port defined therein, laminating the opposed planar surfaces with a chemical resist material, masking the chemical resist material on the first planar surface in such a manner so as to delineate a raised surface area of a bead circumscribing the sealing port, masking the chemical resist material on the second planar surface in such a manner so as to delineate a recessed surface area of the bead circumscribing the sealing port, curing the unmasked chemical resist material on the opposed planar surfaces of the preform, removing the uncured chemical resist material from the opposed planar surfaces, and exposing the gasket preform to a chemical etching agent to reduce the thickness of the gasket preform in areas which are absent cured chemical resist material.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: November 23, 1999
    Assignee: Farnam/Meillor Sealing Systems Inc.
    Inventors: Mark C. Sitko, Alan C. Wesley