Abstract

A coupling shaft assembly includes a coupling shaft with a first radial shoulder and a second radial shoulder, the first radial shoulder and the second radial shoulder each include at least one slot to provide a lubricant flow …

Legal parties

Party
Inventors (applicants): Satish Shantilal Shah, Timothy P. Walgren
Assignees (initial): Hamilton Sundstrand Corporation (Windsor Locks, US)
Agents: Carlson, Gaskey & Olds, P.C. (attorney)

The application was examined by Theresa Trieu (USPTO dept. 3748)

Claims

  • 1. A gear pump comprising: …
  • 2. The gear pump as recited in claim 1 , wherein said coupling shaft includes …
  • 3. The gear pump as recited in claim 1 , further comprising a drive gear …

Cited documents

Patents

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Brief Description of the Drawings

Various features will become apparent to those skilled in the art from the following detailed description of the disclosed non-limiting embodiment. The drawings that accompany the detailed description can be briefly …

Description

Background

The present disclosure relates to a pump, and more particularly to a fuel gear pump for gas turbine engines. Fuel gear pumps are commonly used to provide fuel flow and pressure …

Detailed Description

FIG. 1 schematically illustrates a gear pump 20 driven by an accessory gearbox 22 to communicate a fluid such as fuel to a gas turbine 24. It should be appreciated …

More details about Coupling Shaft for Gear Pump

Miscellaneous patent data

The term of the patent grant was extended by 388 days, similar classification categories are Rotating weight valves working fluid passage, dissimilar tooth forms, changing the form of the inner or outer contour of the working chamber, Adjustable, Arc shaped, Spring biased, using sliding valves, Fluid biased, characterised by changing the positions of the inlet or outlet openings with respect to the working chamber, having pawl-and-ratchet type drive, 16 figures depict the invention details, the invention is titled Coupling Shaft for Gear Pump, the grant number is 08801410 (publication number), the examination was conducted by Theresa Trieu (primary examiner, 3748 USPTO department), the published agent's company is Carlson, Gaskey & Olds, P.C., the claim number 12 is selected as exemplary, the recorded inventor's name is Timothy P. Walgren, the inventor's city is Byron, state - IL, particularly claims a gear pump comprising…, the patent is illustrated by 13 drawings, the assignee is categorized as a United States company, the patent was granted on Aug. 12, 2014, the applicant's last name is Shah, and his first name is Satish Shantilal, the applicant's location - Rockford, IL, the application was published on Feb. 25, 2011, the primary classification Shaft or Trunnion Lubrication or Sealing by Diverted Working Fluid Portion has been designated to the document, 18 claims comprise the protection scope, located in Windsor Locks (US), the assignee organization is Hamilton Sundstrand Corporation, numbered 13/035,004 (application), developed by Satish Shantilal Shah et al., the drawings include the following: Coupling Shaft for Gear Pump, Sectional view of the gear, Block diagram of a gear, End view of a gear.

Invention classification information

The invention is classified under With disparate device for coupling shaft to additional shaft or rotary body, Liquid sealing for high-vacuum pumps, Methods, Having each radial protuberance of like dimension, With lubrication, Specific angle or shape of rib, key, groove, or shoulder, Progressively biased from inlet to outlet, Heating, Cooling, Heat insulation, Shaft or Trunnion Lubrication or Sealing by Diverted Working Fluid Portion, Lubrication, Lubricant separation, Rotary-piston engines, Longitudinally splined or fluted rod. The designated search classifications include Methods, Shaft or Trunnion Lubrication or Sealing by Diverted Working Fluid Portion, Progressively biased from inlet to outlet, With disparate device for coupling shaft to additional shaft or rotary body.

Patent details
Publication number 08801410
Publication date Aug. 12, 2014
Kind code B2
Application number 13/035,004
Application date Feb. 25, 2011
Application type U
Application series code 13
Extension term 388
National classification 418/102
Total number of claims 18
Exemplary claims 12
Number of drawings 13
Number of figures 16
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