Electrical switch
AssigneeDefond Components Limited
InventorKin Yu Wong
Life of this patent
Estimating the term…
Abstract
An electrical switch has a fixed contact and a moving contact arranged for movement between an ON position in contact with the fixed contact and an OFF position out of contact with the fixed contact, and an operating member for operating the moving contact. A spring co-acts between the operating member and the moving contact and resiliently biases the moving contact towards each of the ON and OFF positions through an over-centre action of the spring. An end piece is fitted at each end of the spring, which has a formations for example, a groove, for pure rotary engagement with a part, for example a pin, movable with the operating member or moving contact for imparting resilient action upon the operating member or the moving contact.
Claims9
An electrical switch comprising:
- a body;
- at least one fixed contact and a moving contact supported by the body and arranged for movement between a first position in contact with the at least one fixed contact and a second position out of contact with the at least one fixed contact;
- an operating member for operating the moving contact by moving the moving contact between the first and second positions;
- a spring having opposite ends and co-acting between the operating member and the moving contact and resiliently biasing the moving contact towards each of the first and second positions through an over-centre action of the spring;
- and
- a distinct end piece located at least a first end of the spring, the end piece being attached to the first end of the spring and having a formation for pure rotary engagement with a part movable with the operating member or moving contact for imparting resilient action upon the operating member or moving contact.
Dependencies are inferred from the claim text.