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US 10,748,727 B2Granted
Electrical switch
OwnerMei Mei Memie Wonginventor
Life of this patent
Estimating the term…
Abstract
An electrical switch has a casing, fixed contacts and at least one moving contact located in the casing, and a rotor supported in the casing for rotation about an axis of rotation to move the moving contact into and out of contact with at least one of the fixed contacts. There is also an operating mechanism for rotating the rotor. The fixed contacts are arranged on one side of the rotor with respect to the axis of rotation.
Claims31
An electrical switch comprising:
- a casing;
- a plurality of fixed contacts and at least one moving contact located in the casing;
- a rotor supported in the casing for rotational advancement about an axis of rotation of the rotor to move the moving contact into and out of contact with at least one of the fixed contacts, thereby performing a switching action, wherein
- the fixed contacts are sequentially arranged along a single straight line that is substantially parallel to the axis of rotation of the rotor,
- the at least one moving contact is located on and moves with rotation of the rotor,
- the rotor has a cavity in which the at least one moving contact is located,
- the cavity has respective open regions through each of which the at least one moving contact is exposed and contactable by a corresponding one of the fixed contacts, and
- the cavity includes at least one closed region covering and blocking the at least one moving contact from being contacted by the corresponding one of the fixed contacts;
- and
- an operating mechanism for rotationally advancing the rotor about the axis of rotation of the rotor.
7 more elements
An electrical switch comprising:
- a casing;
- a plurality of fixed contacts and at least one moving contact located in the casing;
- a rotor supported in the casing for rotational advancement about an axis of rotation of the rotor to move the at least one moving contact into and out of contact with at least one of the fixed contacts, thereby performing a switching action, wherein the fixed contacts are sequentially arranged along a single straight line that is parallel to the axis of rotation of the rotor;
- and
- an operating mechanism for rotationally advancing the rotor about the axis of rotation of the rotor and including
- ratchet means in ratchet engagement with a part of the rotor,
- a manually-operable member for operating the ratchet means in a driving direction for rotational advancement of the rotor, and
- first resilient means resiliently biasing the ratchet means to return in a non-driving direction that is opposite to the driving direction.
5 more elements
Dependencies are inferred from the claim text.