55 patents
Page 2 of 3
Utility
Pump with housing having internal grooves
1 Feb 22
A pump includes an axial inducer.
Khin Phui, Sen Meng
Filed: 12 Oct 18
Utility
Power converter including a recirculating snubber
1 Feb 22
A power converter includes a first rectifier circuit having a pair of first rectifier circuit output terminals and a second rectifier circuit having a pair of second rectifier circuit output terminals, a snubber circuit comprising a first diode and a first capacitor connected to each other at a first node and connecting the pair of first rectifier circuit output terminals, a second diode and a second capacitor connected to each other at a second node and connecting the pair of second rectifier circuit output terminals, a third diode connecting the first node to one of the pair of second rectifier output terminals, and a fourth diode connecting the second node to one of the pair of first rectifier output terminals.
Bryce L. Hesterman
Filed: 11 Apr 18
Utility
Reduced Vapor-toxicity Hydrazine Composition
27 Jan 22
The hydrazine-containing composition is a liquid mixture that includes from 5 mol % to 95 mol % of unprotonated hydrazine selected from hydrazine, monomoethylhydrazine, dimethylhydrazine, ethylhydrazine, and combinations thereof, and from 5 mol % to 90 mol % of at least one oxygen-containing solute or solvent selected from acetals, acetyls, alcoxyamines having two or more carbon atoms, aldehydes, amides, amides and particularly carboxamides, aminoalcohols, carbazides, semicarbazides, carbon-containing nitrate salts comprising cations with logarithmic dissociation constants less than 9.2, hydroxyalkyl nitro compounds, hydroxyalkylhydrazines, carbonates, carboxylic acids and anhydrides of carboxylic acids, esters, ethers, ketals, ketones, mono- and poly-alcohols in 31% or greater mass fraction, nitrate esters, nitrosamines, sugars, and combinations thereof.
Robert K. Masse
Filed: 24 Jan 19
Utility
Injector with Injector Elements In Circumferential Rows That Alternate Between Counter-clockwise and Clockwise Swirl
25 Nov 21
An injector for a liquid rocket engine includes an array of injector elements.
Yaping (Alan) Huang
Filed: 30 Oct 18
Utility
Copper combustion chamber attached to injector by non-copper weld transition ring
23 Nov 21
A rocket engine includes a copper alloy combustion chamber, a non-copper weld transition ring welded to the copper alloy combustion chamber, and an injector assembly welded to the non-copper weld transition ring.
Mark J. Ricciardo, Edmund B. Stastny, Lee A. Ryberg
Filed: 9 Oct 18
Utility
Pump with Axially-elongated Annular Seal Element Between Inducer and Impeller
4 Nov 21
A pump includes a shaft that is rotatable about a central axis.
Jeff Miller, Steven Grota
Filed: 19 Oct 18
Utility
Load impedance tester and measurement method
2 Nov 21
An impedance measurement circuit includes a signal injector having a voltage input and a voltage output, a controllable switch, and a voltage drop device connected in parallel with the controllable switch between the voltage input and the voltage output.
Bryce L. Hesterman
Filed: 4 Dec 17
Utility
Hall Thruster with Annular Cathode
3 Jun 21
A Hall thruster includes an annular discharge region and an annular cathode concentric to the annular discharge region.
Justin Pucci
Filed: 19 Dec 17
Utility
Magnetic latch throttle valve
1 Jun 21
A latch valve includes a ferromagnetic shell, a ferromagnetic pole, a permanent magnet disposed within the ferromagnetic shell, an electromagnet disposed within the ferromagnetic shell, a seal, and a magnetic plunger disposed within the ferromagnetic shell.
Arturo Tolentino
Filed: 12 Apr 16
Utility
Additive for solid rocket motor having perchlorate oxidizer
1 Jun 21
A method for enhanced validation of an entity associated with a COF token includes: storing at least transaction data, a token requester identifier (TRJD), and a COF token identifier; receiving payment credentials, wherein the payment credentials include at least a COF-specific payment token; generating a transaction message, wherein the transaction message is formatted based on one or more standards and includes at least a plurality of data elements including at least a first data element configured to store the COF-specific payment token, a second data element configured to store the COF token identifier, a third data element configured to store the TRID, and one or more additional data elements configured to store the transaction data; and electronically transmitting the generated transaction message to a financial institution via a payment network.
Scott K. Dawley, Daniel Doll
Filed: 15 Nov 16
Utility
Boost turbo-pump with axially fed turbine
11 May 21
A liquid propellant rocket engine includes a main turbo-pump and a boost turbo-pump.
Khin Phui
Filed: 20 Jul 17
Utility
Ground hydraulic system hypergolic slug injection
13 Apr 21
An engine start system includes a facility that has a ground based hydraulic pressurization system and a combustor of a liquid propellant rocket engine.
Douglas Parker, Frederick Dodd
Filed: 11 Jul 17
Utility
Magnetic latch valve
30 Mar 21
A latch valve includes a ferromagnetic shell, a ferromagnetic pole, a permanent magnet, an electromagnet, and a ferromagnetic plunger that is disposed within the ferromagnetic shell.
Arturo Tolentino
Filed: 12 Apr 16
Utility
Power Converter Including a Recirculating Snubber
25 Mar 21
A power converter includes a first rectifier circuit having a pair of first rectifier circuit output terminals and a second rectifier circuit having a pair of second rectifier circuit output terminals, a snubber circuit comprising a first diode and a first capacitor connected to each other at a first node and connecting the pair of first rectifier circuit output terminals, a second diode and a second capacitor connected to each other at a second node and connecting the pair of second rectifier circuit output terminals, a third diode connecting the first node to one of the pair of second rectifier output terminals, and a fourth diode connecting the second node to one of the pair of first rectifier output terminals.
Bryce L. Hesterman
Filed: 11 Apr 18
Utility
Liquid propellant rocket engine nozzle with passive condensate cooling
23 Mar 21
A liquid propellant rocket engine includes a combustion chamber that has a throat and a nozzle aft of the throat.
Jiten R. Patel, Jim A. Clark, Charles Whipple, IV
Filed: 15 Jun 17
Utility
Propulsion system with differential throttling of electric thrusters
2 Mar 21
A propulsion system includes at least one group of electric thrusters that are spatially distributed in a multi-axis system.
Ronald Corey
Filed: 19 Oct 15
Utility
Stepped slinger
2 Feb 21
A turbopump includes a slinger that has a first section and a second section.
Thaddeus Chilcoat
Filed: 26 Jul 17
Utility
Pump with Housing Having Internal Grooves
6 Jan 21
A pump includes an axial inducer.
Khin Phui, Sen Meng
Filed: 11 Oct 18
Utility
Solid rocket motor with vortex inducing feature
4 Jan 21
A solid rocket motor includes a propellant grain structure defining an axial bore and a vortex inducing feature.
Samuel Steven Schlueter
Filed: 25 Jul 16
Utility
Load Impedance Tester and Measurement Method
9 Dec 20
An impedance measurement circuit includes a signal injector having a voltage input and a voltage output, a controllable switch, and a voltage drop device connected in parallel with the controllable switch between the voltage input and the voltage output.
Bryce L. Hesterman
Filed: 3 Dec 17