About 12 results
https://drivepatents.com/patents/991859 · 10 Apr 2013
The invention provides an electronic timepiece and a secondary battery unit in which the base parts of the movement such as a main plate can be made common between an ordinary analog timepiece and a solar-powered analog timepiece. The electronic timepiece ...
https://drivepatents.com/patents/1001415 · 13 Jun 2012
The apparatus has an actuating mechanism (17) for actuating an electric generator (22) using energy produced by relative movements of a part and another part (3). The mechanism includes a primary spring energy accumulator (20) to store energy produced by t...
https://drivepatents.com/patents/1009389 · 21 Sep 2011
The invention relates to a portable electronic communication device (10), such as a mobile telephone, in which operation is possible at least for a short period of time even when the main rechargeable battery (14) of the device is empty. According to the i...
https://drivepatents.com/patents/1076930 · 15 Jun 2005
The invention provides a rechargeable electronic timepiece that restarts the operation of a clock circuit by inputting a power source, thereby securely confirming the clock operation. The electronic timepiece includes a first power source (2), a clock circ...
https://drivepatents.com/patents/1084422 · 1 Sep 2004
Charging a storage cell requires the electromotive force exerted at a photogenerating cell in addition to the voltage equal to or higher than the forward on voltage developed at an backflow preventing diode. Therefore, the charging is inefficient. Moreover...
https://drivepatents.com/patents/1086154 · 23 Jun 2004
The button type battery (1) is situated in a housing within the equipment base (2) and is secured by tongues (5) which extend from the housing floor and have retaining tips (11) at their ends (9). The action of the retaining tips is reinforced by the lid (...
https://drivepatents.com/patents/1095703 · 28 May 2003
An induction charger recharges an accumulator which supplies electric power to the wristwatch. The charger has primary winding and secondary winding (2) that is housed in the strand of wristwatch.
https://drivepatents.com/patents/1096707 · 16 Apr 2003
The wrist watch (10) couples to a combined charger and data transfer module (1). The battery charger operates by inductive coupling between charger and watch, using a winding built into the watch, while the data transfer operates via infra-red coupling bet...
https://drivepatents.com/patents/1099960 · 4 Dec 2002
To provide a power supply apparatus that replaces a dry battery by detecting electric field energy in a free space, rectifying the energy, extracting the energy as electric power, and accumulating the electric power. In particular, there is provided a powe...
https://drivepatents.com/patents/1106313 · 6 Mar 2002
To provide a battery holding structure of an electronic timepiece having a simple constitution and being inexpensive, there is provided a battery frame (102) having an opening portion (113) for holding a battery (101), the battery frame (102) is provided w...