US 4,716,352 A · Charging base for a battery-powered appliance

Abstract

The invention is directed to an electrical charging base for a battery-powered appliance having an electrical charging contact and includes a frame defining a shaped cavity for receiving an appliance in only one orientation, a rectifying circuit disposed in the frame for converting source alternating current to charging direct current, the rectifying circuit including a charging output contact disposed for electrical connection to the charging contact of an appliance when disposed in the cavity and a source input contact for electrical connection to an electrical source. A bypass circuit is disposed in the frame for electrically connecting the source input contact to a source output contact. The invention further comprises a jumper for electrically connecting the source output contact of one charging base to the source input contact of a second charging base.

Drawings

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Drawings

Claims7

Dependent claims

An electrical charging base for a battery-powered appliance having an electrical charging contact, said base comprising:

(a) a frame defining a shaped cavity for receiving said appliance in only one orientation;
(b) a rectifying circuit disposed in said frame for converting source alternating current to charging direct current, said source alternating current originating from a source outside of said charging base, said rectifying circuit including a source input contact and a charging output contact, said charging output contact being disposed for electrical connection with said charging contact when said appliance is disposed in said cavity;
(c) a source output contact disposed in said frame;
(d) a bypass circuit disposed in said frame for electrically connecting said source input contact to said source output contact, said bypass circuit transmitting source unaltered AC current from said source input contact to said source output contact;
and
(e) jumper means for electrically connecting said source output contact to a source input contact of a second charging base for another appliance.

3 more elements

Dependencies are inferred from the claim text.

Description1,890 words

Summary474 words

#1. Field of the Invention

#This invention relates to charging bases for battery-powered appliances and, in particular, charging bases with the capability of being electrically connected in series.

#2. Description of Related Art

Brief description of the drawings7 figures

#The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention, and, together with the description, serve to explain the principles of the invention.

#FIG. 1A is a plan view of the bottom of a charging base of the invention.

#FIG. 1B is a partial cross-sectional view taken along line 1A--1A of FIG. 1.

Detailed description1,263 words

#Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

#In accordance with the invention, an electrical charging base for a battery-powered appliance which has an electrical charging contact, comprises a frame defining a shaped cavity for receiving the appliance in only one orientation. In the preferred embodiment, as depicted in FIG. 1A, the base 10 comprises a frame 12 defining a shaped cavity for receiving an appliance in only one orientation. FIG. 1A depicts the bottom surface of frame 12, the shaped cavity is open to the top surface of frame 12. The view on the bottom surface indicates the shape of cavity 14 by means of the projection 16 created when forming the cavity in the plastic base. A cross-sectional view of a portion of the cavity may be seen in FIG. 1B.

#Preferably the frame comprises a back 18 and a front 20 defined by opposed side walls 22 and opposed end walls 24. The side and end walls define the plane of and a substantially rectangular perimeter for back 18. The frame may include a pair of projections 26 in the back thereof spaced along its center line, each having an opening 28 permitting attachment of frame 12 to a vertical surface. Projections 26 preferrably do not project beyond the plane defined by the side and end walls.

Facts

Application

06/686,590Filed 26 Dec 1984

Granted

29 Dec 1987

Term ended

29 Dec 2004

Estimated · how

Pre-1995 term; greater of 17 years from grant or 20 years from filing when eligible. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification4 codes

H02J 7/70
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: characterised by the mechanical construction
Y10S 320/27
Electricity: battery or capacitor charging or discharging: transformerless
H02J
Power supply and charging
Y10S
Technical subjects covered by former uspc cross-reference art collections [xracs] and digests

Description1,890 words

Summary474 words

#1. Field of the Invention

#This invention relates to charging bases for battery-powered appliances and, in particular, charging bases with the capability of being electrically connected in series.

#2. Description of Related Art

Brief description of the drawings7 figures

#FIG. 1A is a plan view of the bottom of a charging base of the invention.

#FIG. 1B is a partial cross-sectional view taken along line 1A--1A of FIG. 1.

Detailed description1,263 words

#Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

Charging base for a battery-powered appliance

Life of this patent

Charging base for a battery-powered appliance

Life of this patent

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims7

Description1,890 words

Drawings

Classification4 codes

Description1,890 words