| US 7,474,058 B2 | ||
| Inductively powered secondary assembly | ||
| David W. Baarman, Fennville, Mich. (US) | ||
| Assigned to Access Business Group International LLC, Ada, Mich. (US) | ||
| Filed on Nov. 10, 2006, as Appl. No. 11/558,684. | ||
| Application 09/592194 is a division of application No. 10/133860, filed on Apr. 26, 2002, granted, now 6,731,071. | ||
| Application 11/558684 is a continuation of application No. 10/977443, filed on Oct. 29, 2004, granted, now 7,153,178. | ||
| Application 10/977443 is a continuation of application No. 10/455694, filed on Jun. 05, 2003, granted, now 6,831,417. | ||
| Application 10/455694 is a continuation in part of application No. 09/592194, filed on Jun. 12, 2000, granted, now 6,436,299. | ||
| Claims priority of provisional application 60/357908, filed on Feb. 19, 2002. | ||
| Claims priority of provisional application 60/140159, filed on Jun. 21, 1999. | ||
| Claims priority of provisional application 60/140090, filed on Jun. 21, 1999. | ||
| Prior Publication US 2007/0205730 A1, Sep. 06, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H01J 13/46 (2006.01) | ||
| U.S. Cl. 315—51 [315/57; 315/58; 315/248] | 8 Claims |
| 1. An inductively powered secondary assembly comprising:
an inductive secondary to receive power from an inductive primary, the inductive secondary having a reactance;
a load disposed in series with the inductive secondary, the load having an impedance; and
a capacitor disposed in series with the inductive secondary and the load, the capacitor selected to have a reactance that
is substantially equal to or slightly less than the sum of the impedance of the load and the reactance of the inductive secondary,
whereby the load and the inductive secondary operate substantially at resonance.
|