US Patent 7975782 Earth bit having a pressure relief valve
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Edits on 28 Nov, 2023
Golden AI
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Patent abstract
An earth bit includes a cutting cone mounted to a lug to form a bearing cavity. A valve is in fluid communication with the bearing cavity and a bit chamber, wherein the valve includes a diaphragm with an aperture. The aperture is repeatably moveable between open and closed conditions in response to a pressure difference between the material in the bearing cavity and bit chamber.
Edits on 23 May, 2023
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US Patent 07975782 Earth bit having a pressure relief valve US Patent 7975782 Earth bit having a pressure relief valve
Infobox
Patent Number
0797578200
Patent Number
797578200
Edits on 3 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
079757820
Date of Patent
July 12, 2011
0Patent Application Number
118409580
Date Filed
August 18, 2007
0Patent Primary Examiner
Edits on 26 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
079757820
Date of Patent
July 12, 2011
0Patent Application Number
118409580
Date Filed
August 18, 2007
0Patent Primary Examiner
Edits on 8 Dec, 2021
Golden AI
Edits made to:
Infobox (+7 properties)
US Patent 07975782 Earth bit having a pressure relief valve
Infobox
Is a
Patent jurisdiction
Patent number
07975782
Date of patent
July 12, 2011
Patent application number
11840958
Date Filed
August 18, 2007
Patent primary examiner
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