Foot-actuated control arrangment particularly for dental arrangment

Claim 2

In a foot-actuated control arrangement, in particular for dental apparatuses including foot-treadle means displaceable from an initial position towards both sides in one plane; an actuating element actuatable on a switching and control element wherein said actuating element is displaceable along a pivot path about a bearing location, and at least one control element having a first, active position wherein said control element urges said actuating element to an initial position thereof along the pivot path and automatically reconveys said actuating element into said initial position subsequent to a displacement from said initial position; the improvement comprising: said control element includes a second, inactive position wherein the actuating element moves along its pivot path independent of said control element and may be held in every position along the pivot path; and means connected to the control element to move the control element between its first and second positions.

Claim 3

Arrangement as claimed in claim 1, wherein said actuating element is displaceable about a bearing location in a plane extending transverse to the previously mentioned plane, and during the course of its displacement about the bearing of location effects actuation of a switch element.

Claim 4

Arrangement as claimed in claim 1, wherein said actuating element includes a contact element supported on a guide track, and wherein said control element is constituted by said contact element.

Claim 5

Arrangement as claimed in claim 1, wherein said control element includes a fluid actuatable piston arrangement interconnected with said actuating element.

Claim 6

Arrangement as claimed in claim 1, wherein said control element comprises an electromagnetic arrangement interconnected with said actuating element.

Claim 7

Arrangement as claimed in claim 1, wherein said control element comprises a linear motor interconnected with the actuating element.

Claim 8

In a foot-actuated control arrangement, in particular for dental apparatuses including foot-treadle means displaceable from an initial position towards both sides in one plane; an actuating element actuatable on a switching and control element wherein said actuating element is displaceable along a pivot path about a bearing location, and at least one control element for maintaining said actuating element in the initial position thereof along the pivot path and for automatically reconveying said actuating element into said position subsequent to a displacement from said initial position; the improvement comprising in that said control element is settable into a non-returning condition upon the supply or disappearance of a separate control signal from its condition of automatic return, whereby the actuating element can remain in every possible set position along the pivot path; and in that said control element includes a running element arranged opposite and supported on a V-shaped guide track having its dividing point facing away from the running element, said guide track having both ends thereof fixed relative to the bearing location for the actuating element.

Claim 9

In a foot-actuated control arrangement, in particular for dental apparatuses including foot-treadle means displaceable from an initial position towards both sides in one plane; an actuating element actuatable on a switching and control element wherein said actuating element is displaceable along a pivot path about a bearing location, and at least one control element for maintaining said actuating element in the initial position thereof along the pivot path and for automatically reconveying said actuating element into said position subsequent to a displacement from said initial position; the improvement comprising in that said control element is settable into a non-returning condition upon the supply or disappearance of a separate control signal from its condition of automatic return, whereby the actuating element can remain in every possible set position along the pivot path; and in that said control element includes a running element arranged opposite and supported on a V-shaped guide track having its dividing point facing away from the running element, said guide track having both ends thereof fixed relative to the bearing location for the actuating element.

Claim 10

Arrangement as claimed in claim 7, wherein said running element comprises a roller at the end facing towards the V-shaped guide track.

Claim 11

In a foot-actuated control arrangement, in particular for dental apparatuses including foot-treadle means displaceable from an initial position towards both sides in one plane; an actuating element actuatable on a switching and control element wherein said actuating element is displaceable along a pivot path about a bearing location, and at least one control element for maintaining said actuating element in the initial position thereof along the pivot path and for automatically reconveying said actuating element into said position subsequent to a displacement from said initial position; the improvement comprising in that said control element is settable into a non-returning condition upon the supply or disappearance of a separate control signal from its condition of automatic return, whereby the actuating element can remain in every possible set position along the pivot path; in that said control element includes a fluid actuatable piston arrangement interconnected with said actuating element; and in that an electromagnet is provided for controlling the opening and closing of the fluid circuit of the piston arrangement.

Claim 12

In a foot-actuated control arrangement, in particular for dental apparatuses including foot-treadle means displaceable from an initial position towards both sides in one plane; an actuating element actuatable on a switching and control element wherein said actuating element is displaceable along a pivot path about a bearing location, and at least one control element for maintaining said actuating element in the initial position thereof along the pivot path and for automatically reconveying said actuating element into said position subsequent to a displacement from said initial position; the improvement comprising in that said control element is settable into a non-returning condition upon the supply or disappearance of a separate control signal from its condition of automatic return, whereby the actuating element can remain in every possible set position along the pivot path; in that said control element includes a fluid actuatable piston arrangement interconnected with said actuating element; and in that an electromagnet is provided for controlling the opening and closing of the fluid circuit of the piston arrangement.