Search Patents
  • BATTERY COMPONENTS WITH LEACHABLE METAL IONS AND USES THEREOF
    Publication number: 20140227585
    Abstract: The disclosure describes compositions and methods for producing a change in the voltage at which hydrogen gas is produced in a lead acid battery. The compositions and methods relate to producing a concentration of one or more metal ions in the lead acid battery electrolyte. The various compositions disclosed include battery electrode plate grids designed to produce a concentration of one or more metal ions in the lead acid battery electrolyte. The disclosure also describes resin coated battery components or battery components coated with a metal oxide layer in which the coatings produce a concentration of one or more metal ions in the lead acid battery electrolyte.
    Type: Application
    Filed: April 23, 2014
    Publication date: August 14, 2014
    Applicant: Hollingsworth & Vose Company
    Inventors: John Wertz, Christopher Campion, Rene Gargan, Mohan Rajaram, Svetlana Krupnikov, John Windisch
  • Filter media including polymer compositions and blends
    Patent number: 9694306
    Abstract: Polymer compositions that may be used to form fibers for a fiber web are generally described. In some embodiments, certain properties of the polymer compositions (e.g., molecular weight distribution, melt flow index, melt elasticity, and/or melt toughness) may allow the formation of fiber webs having fine fibers and a relatively low amount of process defects. In some instances, these properties of the polymer composition may be achieved by combining two or more polymer components. Fiber webs formed using the polymer composition may have increased performance and/or better structural characteristics compared to fibers webs formed using a single polymer component.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: July 4, 2017
    Assignee: Hollingsworth & Vose Company
    Inventors: Nagendra Anantharamaiah, William S. Freeman, Bruce Smith
  • FILTER MEDIA WITH A MULTI-LAYER STRUCTURE
    Publication number: 20160184751
    Abstract: Filter media are described. The filter media may include multiple layers. In some embodiments, the filter media include a nanofiber layer adhered to another layer. In some embodiments, the layer to which the nanofiber layer is adhered is formed of multiple fiber types (e.g., fibers that give rise to structures having different air permeabilities and/or pressure drops). In some embodiments, the nanofiber layer is adhered to a single-phase or a multi-phase layer. In some embodiments, the nanofiber layer is manufactured from a meltblown process. The filter media may be designed to have advantageous properties including, in some cases, a high dust particle capture efficiency and/or a high dust holding capacity.
    Type: Application
    Filed: December 30, 2015
    Publication date: June 30, 2016
    Applicant: Hollingsworth & Vose Company
    Inventors: John A. Wertz, Douglas M. Guimond
  • BATTERY SEPARATORS COMPRISING INORGANIC PARTICLES
    Publication number: 20160301053
    Abstract: Battery separators are generally provided. In some embodiments, the battery separators may comprise a non-woven web including a plurality of inorganic particles (e.g., silica). The non-woven web may include, in some embodiments, a plurality of relatively coarse glass fibers (e.g., having an average diameter of greater than about 1.5 microns), e.g., such that the non-woven web has a particular largest pore size and median pore size. The combination of inorganic particles with a non-woven web having features described herein may exhibit enhanced electrolyte stratification distance and/or reduced electrolyte filling time. In some embodiments, such improvements may be achieved while having relatively minimal or no adverse effects on another property of the battery separator and/or the overall battery.
    Type: Application
    Filed: April 10, 2015
    Publication date: October 13, 2016
    Applicant: Hollingsworth & Vose Company
    Inventor: Zhiping Jiang
  • Graft polymerization, separators, and batteries including the separators
    Patent number: 6955865
    Abstract: A non-woven sheet of polyolefin fibers having opposed major surfaces is disclosed. Some areas of one or both of the major surfaces are hydrophilic as a consequence of an acrylic graft polymerized with the surfaces of the fibers in those areas while the fibers in other areas of that major surface are free of the graft and, as a consequence, remain hydrophobic. A battery separator composed of at least two such non-woven sheets is also disclosed, as well as batteries having a separator composed of at least one such non-woven sheet. Also disclosed is a non-woven sheet of polyolefin fibers where opposed major surfaces of the sheet are hydrophilic as a consequence of such an acrylic acid graft, but the ion exchange coefficients of the two major surfaces are different.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: October 18, 2005
    Assignee: Hollingsworth & Vose Company
    Inventor: Wai Ming Choi
  • Filter media with a multi-layer structure
    Patent number: 8679218
    Abstract: Filter media are described. The filter media may include multiple layers. In some embodiments, the filter media include a nanofiber layer adhered to another layer. In some embodiments, the layer to which the nanofiber layer is adhered is formed of multiple fiber types (e.g., fibers that give rise to structures having different air permeabilities and/or pressure drops). In some embodiments, the nanofiber layer is adhered to a single-phase or a multi-phase layer. In some embodiments, the nanofiber layer is manufactured from a meltblown process. The filter media may be designed to have advantageous properties including, in some cases, a high dust particle capture efficiency and/or a high dust holding capacity.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: March 25, 2014
    Assignee: Hollingsworth & Vose Company
    Inventors: John A. Wertz, Douglas M. Guimond
  • Filter media with irregular structure and/or reversibly stretchable layers
    Patent number: 11420143
    Abstract: Articles and methods relating to filter media are generally provided. In some embodiments, a filter media has an irregular surface structure. For instance, the filter media may comprise a plurality of peaks that are irregular in one or more ways. A ratio of a peak height standard deviation to an average peak height may be greater than or equal to 0.05, and/or a ratio of a peak spacing standard deviation to an average peak spacing may be greater than or equal to 0.08. In some embodiments, a filter media comprises a non-woven fiber web having a layer thickness of greater than 0.3 mm and/or a stiffness of less than or equal to 100 mg.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: August 23, 2022
    Assignee: Hollingsworth & Vose Company
    Inventors: Bruce Smith, Mohammad A. Hassan, Maxim Silin, Sudheer Jinka, Greg Wagner Farell, David T. Healey
  • Gasket material
    Patent number: 5240766
    Abstract: A composite gasket material includes a fiber component (3-15% by wt.), an elastomeric binder component (3-15% by wt.), and a solid filer component (60-90% by wt.). The material may additionally include a phenolic or epoxy resin (up to 5 wt. %) and a silicone resin (up to 5 wt. %). The filler includes as a component a salt formed from a multivalent metal cation and a sterically hindered dicarboxylic acid. The salt ingredient typically comprises from about 20 to 80 wt. % of the filler. Gaskets made from this composite material exhibit improved sealability and thermal stability while retaining other desirable mechanical properties. These materials are able to withstand operating temperatures up to about 450.degree. C.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: August 31, 1993
    Assignee: Hollingsworth & Vose Company
    Inventor: Richard P. Foster
  • FILTER MEDIA AND ARTICLES INCLUDING BINDERS AND/OR OTHER COMPONENTS
    Publication number: 20220362697
    Abstract: Articles such as filter media, which include dendrimers and/or other components, are provided. The filter media may further include a water repellant (e.g., a fluorinated species) to impart desirable properties to the media such as high water repellency. The filter media may also have a high efficiency as a function of pressure drop (i.e., high gamma values). In some embodiments, the filter media includes a fiber web which may be formed of various components such as glass fibers. The fiber web can also include additional components such as synthetic fibers, binder components, as well as other additives. The media may be incorporated into a variety of filter element products.
    Type: Application
    Filed: May 14, 2021
    Publication date: November 17, 2022
    Applicant: Hollingsworth & Vose Company
    Inventors: David F. Sealey, Stuart Williams
  • FILTER MEDIA WITH A MULTI-LAYER STRUCTURE
    Publication number: 20110259813
    Abstract: Filter media are described. The filter media may include multiple layers. In some embodiments, the filter media include a nanofiber layer adhered to another layer. In some embodiments, the layer to which the nanofiber layer is adhered is formed of multiple fiber types (e.g., fibers that give rise to structures having different air permeabilities and/or pressure drops). In some embodiments, the nanofiber layer is adhered to a single-phase or a multi-phase layer. In some embodiments, the nanofiber layer is manufactured from a meltblown process. The filter media may be designed to have advantageous properties including, in some cases, a high dust particle capture efficiency and/or a high dust holding capacity.
    Type: Application
    Filed: April 27, 2010
    Publication date: October 27, 2011
    Applicant: Hollingsworth & Vose Company
    Inventors: John A. Wertz, Douglas M. Guimond
  • DUAL-LAYER SEPARATOR FOR BATTERIES
    Publication number: 20220336925
    Abstract: Battery separators, and lead-acid batteries comprising battery separators, are generally provided. In some embodiments, the battery separators described herein have one or more features that enhance their suitability for various applications (e.g., lead-acid battery applications). In one embodiment, a battery separator described herein comprises at least two phases. In some cases, each phase may have a one or more features that result in a battery separator having enhanced physical properties. For example, the dual-phase battery separator may exhibit reduced electrical and ionic resistance, enhanced acid filling capacity, reduced acid stratification, and enhanced thermal and oxidative stability compared to conventional battery separators.
    Type: Application
    Filed: April 15, 2021
    Publication date: October 20, 2022
    Applicant: Hollingsworth & Vose Company
    Inventor: Zhiping Jiang
  • FILTER MEDIA AND ARTICLES INCLUDING DENDRIMERS AND/OR OTHER COMPONENTS
    Publication number: 20120107588
    Abstract: Articles such as filter media, which include dendrimers and/or other components, are provided. The filter media may further include a water repellant (e.g., a fluorinated species) to impart desirable properties to the media such as high water repellency. The filter media may also have a high efficiency as a function of pressure drop (i.e., high gamma values). In some embodiments, the filter media includes a fiber web which may be formed of various components such as glass fibers. The fiber web can also include additional components such as synthetic fibers, binder components, as well as other additives. The media may be incorporated into a variety of filter element products.
    Type: Application
    Filed: December 29, 2011
    Publication date: May 3, 2012
    Applicant: Hollingsworth & Vose Company
    Inventors: David F. Sealey, Stuart Williams
  • Filter media comprising fibers including charged particles
    Patent number: 10384156
    Abstract: Filter media, including those suitable for hydraulic and/or other applications, and related filter elements and methods associated therewith, are provided. In some embodiments, a filter media described herein may include a layer (e.g., a non-woven layer) comprising a blend of glass fibers and polymeric fibers. The polymeric fibers may comprise a plurality of charged particles at least partially embedded within the polymeric fibers. In some embodiments, the layer comprising the fiber blend may result in an increased air permeability, dust holding capacity, and/or hydraulic gamma (a high ratio of air permeability to efficiency), as compared to filter media that do not include such charged particles.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: August 20, 2019
    Assignee: Hollingsworth & Vose Company
    Inventors: Elke Schmalz, Marlina Seipp, Juergen Battenfeld
  • Filter media including oriented fibers
    Patent number: 10441909
    Abstract: Filter media incorporating one or more filtration layers that include fibers including fiber portions orientated at a non-zero angle with respect to a surface of the filtration layer are provided. In some embodiments, at least a part of the fiber portions are positioned at an angle of at least 20 degrees (e.g., between 46 degrees and 90 degrees, or between 61 degrees and 90 degrees) with respect to a surface of the filtration layer or an outer or cover layer of the media. This orientation of fiber portions may result in an increased efficiency (e.g., average efficiency and/or initial efficiency) compared to similar filter media that do not include such oriented fiber portions.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: October 15, 2019
    Assignee: Hollingsworth & Vose Company
    Inventors: Arash Sahbaee, Bruce Smith
  • FILTER MEDIA SUITABLE FOR HYDRAULIC APPLICATIONS
    Publication number: 20100252510
    Abstract: Filter media, including those suitable for hydraulic applications, and related components, systems, and methods associated therewith are provided. The filter media described herein may include two or more layers, at least one of the layers having a relatively high percentage of microglass fibers. Additionally, the filter media may be designed such that the ratio of average fiber diameters between two layers is relatively small, which can lead to a relatively low resistance ratio between the layers. The filter media has desirable properties including high dirt holding capacity with low basis weight and a low resistance to fluid flow. The media may be incorporated into a variety of filter element products including hydraulic filters.
    Type: Application
    Filed: April 3, 2009
    Publication date: October 7, 2010
    Applicant: Hollingsworth & Vose Company
    Inventors: MILIND GODSAY, RANDALL KEISLER
  • FILTER MEDIA INCLUDING FINE STAPLE FIBERS
    Publication number: 20160361674
    Abstract: Filter media comprising fine staple fibers and related components, systems, and methods associated therewith are provided. In some embodiments, a filter media may include a layer (e.g., a wet laid layer) comprising polymeric staple fibers having a relatively small average diameter (e.g., less than or equal to about 1 micron). The polymeric staple fiber layer may be designed to impart desirable properties to the filter media, such as a high particulate efficiency and/or fluid separation efficiency, while having relatively minimal or no adverse effects on one or more properties of the filter media that are important for a given application. The filter media, described herein, may be particularly well-suited for a variety of applications.
    Type: Application
    Filed: June 9, 2016
    Publication date: December 15, 2016
    Applicant: Hollingsworth & Vose Company
    Inventors: Sneha Swaminathan, Svetlana Krupnikov
  • FILTER MEDIA INCLUDING FINE STAPLE FIBERS
    Publication number: 20160166953
    Abstract: Filter media comprising fine staple fibers and related components, systems, and methods associated therewith are provided. In some embodiments, a filter media may include a layer (e.g., a wet laid layer) comprising polymeric staple fibers having a relatively small average diameter (e.g., less than or equal to about 1 micron). The polymeric staple fiber layer may be designed to impart desirable properties to the filter media, such as a high particulate efficiency and/or fluid separation efficiency, while having relatively minimal or no adverse effects on one or more properties of the filter media that are important for a given application. The filter media, described herein, may be particularly well-suited for a variety of applications.
    Type: Application
    Filed: December 15, 2014
    Publication date: June 16, 2016
    Applicant: Hollingsworth & Vose Company
    Inventors: Sneha Swaminathan, Svetlana Krupnikov
  • FILTER MEDIA INCLUDING A MULTI-PHASE PRE-FILTER
    Publication number: 20180361287
    Abstract: Filter media, as well as related components, systems, and methods, are described herein. In some embodiments, the filter media comprises one or more layers including, for example, a pre-filter layer and a main filter layer. The pre-filter layer may comprise a non-woven web (e.g., a wet-laid non-woven web). In some instances, the non-woven web comprises two or more phases. Each phase of the pre-filter layer may be characterized by a surface average fiber diameter (SAFD), and the SAFD may vary across at least a portion of the thickness of the pre-filter layer. The filter media may have improved dust-holding capacities for dust particles having a wide range of particle sizes, and/or improved mechanical strength (e.g., stiffness).
    Type: Application
    Filed: July 17, 2017
    Publication date: December 20, 2018
    Applicant: Hollingsworth & Vose Company
    Inventors: Xiaodan Zhang, Maxim Silin, Douglas M. Guimond, David T. Healey
  • FILTER MEDIA SUITABLE FOR HYDRAULIC APPLICATIONS
    Publication number: 20110079553
    Abstract: Filter media, including those suitable for hydraulic applications, and related components, systems, and methods associated therewith are provided. The filter media described herein may include two or more layers, at least one of the layers having a relatively high percentage of microglass fibers. Additionally, the filter media may be designed such that the ratio of average fiber diameters between two layers is relatively small, which can lead to a relatively low resistance ratio between the layers. In some embodiments, at least one layer of the filter media comprises synthetic polymer fibers. Certain filter media described herein may have desirable properties including high dirt holding capacity and a low resistance to fluid flow. The media may be incorporated into a variety of filter element products including hydraulic filters.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 7, 2011
    Applicant: Hollingsworth & Vose Company
    Inventors: Cameron Thomson, Milind Godsay, Randall Keisler
  • Battery separators comprising inorganic particles
    Patent number: 9786885
    Abstract: Battery separators are generally provided. In some embodiments, the battery separators may comprise a non-woven web including a plurality of inorganic particles (e.g., silica). The non-woven web may include, in some embodiments, a plurality of relatively coarse glass fibers (e.g., having an average diameter of greater than about 1.5 microns), e.g., such that the non-woven web has a particular largest pore size and median pore size. The combination of inorganic particles with a non-woven web having features described herein may exhibit enhanced electrolyte stratification distance and/or reduced electrolyte filling time. In some embodiments, such improvements may be achieved while having relatively minimal or no adverse effects on another property of the battery separator and/or the overall battery.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: October 10, 2017
    Assignee: Hollingsworth & Vose Company
    Inventor: Zhiping Jiang
Narrow Results

Filter by US Classification