Inventor
Eric P. Hamkins
Inventor
Waukesha, WI, US
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F15Bprimary
F15BSystems acting by means of fluids in general48%
E02FDredging28%
Y10TTechnical subjects covered by former us classification8%
F01LCyclically operating valves for machines or engines4%
F04BPositive-displacement machines for liquids4%
F16FSprings4%
F16KValves4%
PatentTitleYear
10,125,750Radial piston pump assemblies and use thereof in hydraulic circuits201810,072,679Systems and methods for selectively engaged regeneration of a hydraulic system20189,752,597'Metered fluid source connection to downstream functions in PCLS systems'20179,091,281'System for allocating fluid from multiple pumps to a plurality of hydraulic functions on a priority basis'20159,032,724'Command based method for allocating fluid flow from a plurality of pumps to multiple hydraulic functions'20158,899,034'Hydraulic system with fluid flow summation control of a variable displacement pump and priority allocation of fluid flow'20148,453,783'Differential pressure control'20138,215,107'Flow summation system for controlling a variable displacement hydraulic pump'20127,905,088'Energy recovery and reuse techniques for a hydraulic system'20117,823,379'Energy recovery and reuse methods for a hydraulic system'20107,654,369'Hydraulic vibration damper piston with an integral electrically operated adjustment valve'20106,640,834'Electrohydraulic valve for controlling a cam shaft phasing mechanism of an internal combustion engine'20035,950,429'Hydraulic control valve system with load sensing priority'19995,579,642'Pressure compensating hydraulic control system'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2018Patents assigned to HUSCO INT INC (12)· patent assignee history
1996–2018Based in Waukesha, WI, US· patent location history
2012–2015Patents assigned to HAMKINS ERIC P (4)· patent assignee history
2012–2015Patents assigned to PFAFF JOSEPH L (3)· patent assignee history
2014–2015Patents assigned to QUINNELL COREY K (3)· patent assignee history
2014–2015Patents assigned to STARKEY JONATHAN M (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HUSCO INT INC | 12 | 1996–2018 |
| HAMKINS ERIC Pself | 4 | 2012–2015 |
| PFAFF JOSEPH L | 3 | 2012–2015 |
| QUINNELL COREY K | 3 | 2014–2015 |
| STARKEY JONATHAN M | 2 | 2014–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Waukesha, WI, US | 14 | 1996–2018 |