Inventor
David Randolph Spracher
Inventor
Simpsonville, SC, US
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F01Dprimary
F01DNon-positive displacement machines or engines, e.g. steam turbines31%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants21%
Y10TTechnical subjects covered by former us classification17%
B23PMetal-working not otherwise provided for10%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding7%
F04DNon-positive-displacement pumps7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
Y02TClimate change mitigation technologies related to transportation2%
PatentTitleYear
9,890,648'Turbine rotor rim seal axial retention assembly'20189,713,862'Turbomachine component displacement apparatus and method of use'20179,677,428'Removal device'20179,636,789'Turbomachine bucket displacement apparatus and method of use'20179,574,450'Turbine blade mid-span shroud assembly'20179,429,041'Turbomachine component displacement apparatus and method of use'20169,381,602'Turbomachine bucket displacement apparatus and method of use'20169,051,845'System for axial retention of rotating segments of a turbine'20158,864,453'Near flow path seal for a turbomachine'20148,429,816'Stator ring configuration'20138,113,786'Stator vane profile optimization'20127,534,093'Airfoil shape for a compressor'20097,494,322'Airfoil shape for a compressor'2009Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2009–2018Patents assigned to GEN ELECTRIC (13)· patent assignee history
2009–2018Based in Simpsonville, SC, US· patent location history
2012–2018Patents assigned to SPRACHER DAVID RANDOLPH (4)· patent assignee history
2014–2018Patents assigned to TAYLOR ZACHARY JAMES (3)· patent assignee history
2014–2018Patents assigned to ZIEGLER RYAN ZANE (3)· patent assignee history
2014–2018Patents assigned to HARRIS JR JOHN WESLEY (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEN ELECTRIC | 13 | 2009–2018 |
| SPRACHER DAVID RANDOLPHself | 4 | 2012–2018 |
| TAYLOR ZACHARY JAMES | 3 | 2014–2018 |
| ZIEGLER RYAN ZANE | 3 | 2014–2018 |
| HARRIS JR JOHN WESLEY | 2 | 2014–2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Simpsonville, SC, US | 13 | 2009–2018 |