A key switch device includes a base including an opening in a central part thereof; a light guide including an elastic body receiving portion, the light guide being supported by the base to be disposed in the opening; a button attached capable of approaching and separating from the base to cover the light guide; an elastic body disposed between the elastic body receiving portion and a lower surface of the button, the elastic body biasing the button in a separating direction where the button is separated from the base; a fixed contact piece including a fixed contact, the fixed contact piece being attached to the base; and a movable contact piece, which is attached to the base, including a movable contact to be brought into contact with the fixed contact when the button is moved toward the base in an approaching direction where the button approaches the base.

According to the present invention there is provided a button assembly, comprising, a platform having at least two electrodes; a dome member which comprises electrically conductive material, wherein the dome member is electrically connected to at least one of said at least two electrodes, and the dome is arranged so that at least a portion of the dome member overlays at least one other of the at least two electrodes, so that when the dome member is selectively collapsed inwardly by the application of force, the dome member will electrically contact said at least one other of the at least two electrodes, so that in its collapse state the dome member electrically connects the at least one of said at least two electrodes with the at least one other of the at least two electrodes; an interface member which comprises, (a) a compression member which is attached to the dome member at a position which overlays said at least one other of the at least two electrodes; (b) a restrictor member which is configured such that it projects towards the platform and the distance between the platform and the restrictor member is less than the distance between said at least one other of the at least two electrodes and portion of the dome which overlays at least one other of the at least two electrodes, and (c) at least one elastic member which connects the restrictor member and the compression member.

An operation input device includes an operation input unit that is configured to receive a tracing operation performed in a one-dimensional direction. The operation input unit includes a plurality of mechanical switches that are arranged side by side in an operation direction and each include an operation surface subjected to the tracing operation, the operation surface defining a curved surface along the operation direction.

An operation input device includes an operation input unit that is configured to receive a tracing operation performed in a one-dimensional direction. The operation input unit includes a plurality of mechanical switches that are arranged side by side in an operation direction and each include an operation surface subjected to the tracing operation, the operation surface defining a curved surface along the operation direction.

An electrocautery device and system include retractability and extension of a cauterizing tip without impacting or applying backpressure to the supporting electrical components inside the device. In some embodiments, a conductive rail is in constant contact with a spring contact electrically coupled to the power source as the cauterizing tip is retracted or extended from the main housing. Some embodiments include a vacuum system that draws fluid from the treatment site during operation. The fluid travels through a passageway that is sealed off from the electrical components by virtue of aspects of the device. Some embodiments include an ergonomic design and are lower cost by using membrane switch circuits instead of a printed circuit board.

A multi-mode mechanical key switch assembly has a housing and a stem supported in a base of the housing, the stem constrained to move, when depressed during a keystroke, from a resting state and toward the base of the housing. The assembly has a removable contact leaf spring seated in the housing and having a contact portion located in a travel path of the stem for engaging with the stem during the keystroke to provide audible and/or tactile feedback. The contact leaf spring is movable between a first seated position and a second seated position to change the characteristics of the feedback. Removal of the contact leaf spring from the housing enables the stem to travel its maximum keystroke distance without auditory or tactile feedback.

A multi-mode mechanical key switch assembly has a housing and a stem supported in a base of the housing, the stem constrained to move, when depressed during a keystroke, from a resting state and toward the base of the housing. The assembly has a removable contact leaf spring seated in the housing and having a contact portion located in a travel path of the stem for engaging with the stem during the keystroke to provide audible and/or tactile feedback. The contact leaf spring is movable between a first seated position and a second seated position to change the characteristics of the feedback. Removal of the contact leaf spring from the housing enables the stem to travel its maximum keystroke distance without auditory or tactile feedback.

A multi-mode mechanical key switch assembly has a housing and a stem supported in a base of the housing, the stem constrained to move, when depressed during keystroke, from a resting state and toward the base of the housing. The assembly has a removable contact leaf spring seated in the housing and having a contact portion located in a travel path of the stem for engaging with the stem during the keystroke to provide audible and/or tactile feedback. The contact leaf spring is movable between a first seated position and a second seated position to change the characteristics of the feedback. Removal of the contact leaf spring from the housing enables the stem to travel its maximum keystroke distance without auditory or tactile feedback.

A multi-mode mechanical key switch assembly has a housing and a stem supported in a base of the housing, the stem constrained to move, when depressed during keystroke, from a resting state and toward the base of the housing. The assembly has a removable contact leaf spring seated in the housing and having a contact portion located in a travel path of the stem for engaging with the stem during the keystroke to provide audible and/or tactile feedback. The contact leaf spring is movable between a first seated position and a second seated position to change the characteristics of the feedback. Removal of the contact leaf spring from the housing enables the stem to travel its maximum keystroke distance without auditory or tactile feedback.

In a first aspect of the present disclosure, a push switch includes a resilient member that is made of metal, and the resilient member including a concave shape and an opening that is positioned at a center of the concave shape and at least two protrusions each protruding outward and downward with an oblique angle around the concave shape.