Appeal No. 95-1188
Application No. 08/046,127
an AC voltage source. The supported device includes an internal
voltage rectifier that is connected to the AC input connector.
Claim 1 is illustrative of the claimed invention, and it
reads as follows:
1. An external DC (direct current) power supply for
supplying DC power to a supported device having an AC input
connector adapted for connecting the supported device to an AC
voltage source and the supported device including an internal
voltage rectifier connected to the AC input connector,
comprising:
an AC (alternating current) voltage source;
voltage rectifier means coupled to said AC voltage source
for rectifying said AC voltage source;
energy storage means coupled in parallel with an output of
said voltage rectifier means for providing a predetermined DC
voltage threshold level;
connector means for applying a DC power output of said
parallel combination of said rectifier means and said energy
storage means to the voltage rectifier of the supported device,
said connector means being connected to the AC input connector of
the supported device;
said energy storage means supplying current only when said
voltage rectifying means provides a rectified voltage level below
said predetermined DC voltage threshold level thereby providing
backup DC power to the supported device; and
said AC input connector of the supported device being
connected only to said external DC power supply.
The references relied on by the examiner are:
Wright 3,745,453 July 10, 1973
Hosaka 3,784,841 Jan. 8, 1974
Burgin 4,327,298 Apr. 27, 1982
Miyazawa 4,340,823 July 20, 1982
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007