Rotary switch
AssigneeSaia-Burgess Gateshead Ltd. Dukesway, Team Valley, Trading Estate
InventorsUrs Campana, Otto Gut
Life of this patent
Estimating the term…
Abstract
The rotation of a rotary switch is limited by stop ribs in a knob that facilitates the rotation of the rotary switch. The stop ribs can be configured to limit the rotational stress that is applied to the rotary switch, or to limit the states of the switch that are realizable by a particular knob. Using keyed detachable knobs, different keys can be configured to provide different ranges of rotation of the rotary switch, thereby enabling different switching authorizations, based on the particular knob that is used.
Claims12
A rotary switch for switching electrical signals on and off that is configured to be fastened on a front plate, comprising:
- rotatable switching means arranged in a cylindrical or conical housing and
- at least two rotary knobs that are coordinated with the rotary switch,
- each rotary knob of the at least two rotary knobs having a coupling element insertable into the switching means after the rotary switch is fastened to the front plate;
- wherein
- the rotary switch is secured to prevent overturning of the coupling element by a stop rib that is arranged on each rotary knob and another rib on the outside of the front plate or on the housing that can come into contact with one another, and
- the at least two rotary knobs have stop ribs having different lengths that are formed and dimensioned to define rotary knobs having different switching authorizations.
A rotary switch arrangement comprising:
- a rotatable element that is configured to effect a change of state of a switching element based on an angular position of the rotatable element, and
- a detachable knob that is configured to be operably coupled to the rotatable element to facilitate rotation of the rotatable element after the rotatable element is installed and detachable from the rotatable element after the rotatable element is installed;
- wherein
- the detachable knob includes one or more ribs that are configured to limit the rotation of the rotatable element.
A securing apparatus for a rotary switch, comprising:
- a knob that is configured to be coupled to the rotary switch after the rotary switch is installed in its operating position to facilitate rotation of an operable component of the rotary switch, and
- a securing disc, independent of the rotary switch, that includes an annular ring having a stop rib that is configured to limit rotation of the knob, and thereby limit rotation of the operable component of the rotary switch.
Dependencies are inferred from the claim text.