Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
249 words
Dental handpiece comprising a grip sleeve having at least one cordlike light guide in the area of the handpiece head part which passes out of the latter in the direction of the tooth treatment tool and accordingly extends in its entirety within said grip sleeve and is connected at the rear end to a light source and comprising a detachable connecting piece provided for the connection at the end member of a supply tube for the supply media of said handpiece, said connecting piece being arranged so as to be freely rotatable relative to said grip sleeve, wherein said connecting piece is provided with media throughpass ducts which open into it and pass through it and which are connectable with media lines of said grip sleeve leading to the use positions of said handpiece, characterized in that said light source (14) is arranged in a recess (11) located preferably eccentrically in said grip sleeve (2) and is electrically connected with at least one current conductor (15) which is connectable by means of a contact arrangement (16, 17, 34, 35) which permits a reciprocal rotation of said grip sleeve and said connecting piece (10), with a current conductor (42) which penetrates said connecting piece and has a contact (36) at the end of said connecting piece remote of said tool for connecting to an opposite contact in said supply tube end member (29), wherein said contact arrangement consists of two slip rings (34, 35) and two slide contacts (16, 17).
Claim 2
Dependent Claim
249 words
Dental handpiece comprising a grip sleeve having at least one cordlike light guide in the area of the handpiece head part which passes out of the latter in the direction of the tooth treatment tool and accordingly extends in its entirety within said grip sleeve and is connected at the rear end to a light source and comprising a detachable connecting piece provided for the connection at the end member of a supply tube for the supply media of said handpiece, said connecting piece being arranged so as to be freely rotatable relative to said grip sleeve, wherein said connecting piece is provided with media throughpass ducts which open into it and pass through it and which are connectable with media lines of said grip sleeve leading to the use positions of said handpiece, characterized in that said light source (14) is arranged in a recess (11) located preferably eccentrically in said grip sleeve (2) and is electrically connected with at least one current conductor (15) which is connectable by means of a contact arrangement (16, 17, 34, 35) which permits a reciprocal rotation of said grip sleeve and said connecting piece (10), with a current conductor (42) which penetrates said connecting piece and has a contact (36) at the end of said connecting piece remote of said tool for connecting to an opposite contact in said supply tube end member (29), wherein said contact arrangement consists of two slip rings (34, 35) and two slide contacts (16, 17).
Claim 3
Dependent Claim
33 words
Handpiece according to claim 1, characterized in that said slip rings (34, 35) are provided at said connecting piece (10) and said slide contacts (16, 17) are provided at said grip sleeve (2).
Claim 4
Dependent Claim
29 words
Handpiece according to claim 1, characterized in that said grip sleeve (2) and said connecting piece (10) consist of electrically conducting material and form part of the light circuit.
Claim 5
Dependent Claim
30 words
Handpiece according to one of claims 1 to 3, characterized in that an inductively acting switch (39, 40) connected to a control line (41) is provided at said grip sleeve.
Claim 6
Dependent Claim
31 words
Handpiece according to one of claims 1 to 3, characterized in that an inductively acting switch (39, 40) connected to a control line (41) is provided at said connecting piece (10).
Claim 7
Dependent Claim
33 words
Handpiece according to one of claims 1 to 3, characterized in that an inductively acting switch (39, 40) connected to a control line (41) is provided at said supply tube end member (29).