Foot control mechanism for a dental apparatus
First Claim
1. A foot control mechanism for a dental apparatus comprising a base part having a base plate with a longitudinal axis of symmetry, a plurality of switch control elements being mounted on the base plate, an actuation member containing a switch plate, means for mounting the actuation member on the base plate for tilting movement from a neutral position into at least two switching positions directly opposite one another for triggering a switch/control function of at least one of the plurality of switch control elements, said means for mounting including a pair of spaced apart arrangements, each arrangement including a bearing seat on the base plate receiving a projection of the switch plate to form a bearing for the switch plate to tilt on the base plate, said arrangements being positioned with the bearing seats having their axes extending parallel to one another and transverse relative to the longitudinal axis of symmetry.
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Accused Products
Abstract
A foot control mechanism for a dental apparatus has a tiltable actuation member mounted on a base part and an arrangement for holding the tiltable actuation member in a neutral position, which requires sufficient force to move the actuation member in either direction from the neutral position to a switch position. To accomplish this, the structure includes a mounting arrangement utilizing a pair of spaced-apart bearings extending parallel to each other which bearings receive projections on the other element and, preferably, a catch member is provided which provides a resistant force from movement from the neutral position.
71 Citations
16 Claims
- 1. A foot control mechanism for a dental apparatus comprising a base part having a base plate with a longitudinal axis of symmetry, a plurality of switch control elements being mounted on the base plate, an actuation member containing a switch plate, means for mounting the actuation member on the base plate for tilting movement from a neutral position into at least two switching positions directly opposite one another for triggering a switch/control function of at least one of the plurality of switch control elements, said means for mounting including a pair of spaced apart arrangements, each arrangement including a bearing seat on the base plate receiving a projection of the switch plate to form a bearing for the switch plate to tilt on the base plate, said arrangements being positioned with the bearing seats having their axes extending parallel to one another and transverse relative to the longitudinal axis of symmetry.
- 9. A foot control mechanism for a dental apparatus comprising a base part, a plurality of switch control elements being mounted on the base part, an actuation member, means for mounting the actuation member on the base part for movement from a neutral position into at least two switching positions directly opposite one another for triggering a switch/control function of at least one of the plurality of switch control elements, said means for mounting including a pair of arrangements, each arrangement including a bearing seat receiving a projection, said arrangements being positioned with the bearing seats having their axes extending parallel to one another and spaced apart, and detent means for providing a defined retaining force for forming a pressure point which must be overcome to enable the actuation member to be moved from the neutral position, said detent means including a first catch element mounted in the base part engaging an element on the actuation member, said base part having stops for preventing further movement of the actuation member after a short movement from the neutral position.
Specification