07777357 is referenced by 9 patents and cites 56 patents.

An engine includes a cylinder having two ends, a piston slidably disposed in the cylinder and a converter operable with the piston to convert mechanical energy of the piston from and to electrical energy.

Title
Free piston electromagnetic engine
Application Number
11/973343
Publication Number
7777357 (B2)
Application Date
October 5, 2007
Publication Date
August 17, 2010
Inventor
Victoria Y H Wood
Livermore
CA, US
Lowell L Wood Jr
Bellevue
WA, US
Charles Whitmer
North Bend
WA, US
Thomas A Weaver
San Mateo
CA, US
Clarence T Tegreene
Bellevue
WA, US
Nathan P Myhrvold
Medina
WA, US
Jordin T Kare
Seattle
WA, US
Muriel Y Ishikawa
Livermore
CA, US
William H Gates III
Redmond
WA, US
Roderick A Hyde
Redmond
WA, US
Agent
Workman Nydegger
Assignee
The Invention Fund I
WA, US
IPC
F02B 71/00
View Original Source