# US 2006/0076340 A1 · Device for controlling the dispensing of wax for the creation of tracings and moulds in dentistry > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2006/0076340 A1 - Document ID: US20060076340A1 - Status: Published application - Kind: A1 - Application number: 10/477,690 - Filed: 2001-05-16 - Published: 2006-04-13 - Earliest claimed: 2001-05-16 - Inventors: Adriano Guidi - Web page: https://patentgrep.com/patent/US20060076340A1 ## CPC - A61C 13/0028: {Instruments or appliances for wax-shaping or wax-removing} - H05B 3/46: heating conductor mounted on insulating base - A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract A device for controlling and dispensing wax for the creation of tracings and moulds comprising a spatula-like tip (3), which is mounted on a hollow handle (4), and a control unit (1). The hollow handle (4) has internally a housing (10) containing a block of solid wax; the housing (10) communicates with a channel (12) for conveying the wax into the vicinity of the spatula-like tip; and heating elements (9) are provided around the housing (10) for the wax. Preferably, the heating temperature may be regulated by the control unit (1) via a spirally wound electrical resistance. According to an advantageous embodiment, the spatula (3) is interchangeable depending on requirements. ## Claims ### Claim at position 1 -25. (canceled) ### Claim 26 Device for controlling and dispensing wax for the creation of tracings and moulds, comprising a spatula-like tip (3), which is mounted on a hollow handle (4), and a control unit (1), wherein said hollow handle (4) has internally a housing (10) containing a block of solid wax in the manner of a replaceable cartridge, wherein said housing (10) communicates with a channel (12) for conveying the wax into the vicinity of said spatula-like tip (3) and wherein heating means (9) are provided around said housing (10), further comprising wax metering means (11), wherein said wax metering means (11) comprise a pushbutton (16) which is located on the outside of the handle (4) and which extends inside said handle (4) so as to form a horizontal pin (23) which is pivotably hinged with a vertical pin (21), in turn pivotably hinged on a fulcrum (27) and hinged with another horizontal pin (29) which terminates in the manner of a stopper in the bottom part of the wax housing (10), the horizontal pin (23) and the pushbutton (16) being pushed against the action of a spring (24). ### Claim 27 (depends on 26) Device according to claim 26, characterised in that the spatula (3) is formed by a small pipe which is similar to a syringe needle terminating in a nozzle (12). ### Claim 28 (depends on 26) Device according to claim 26, characterised in that means for rapid replacement of said block of solid wax are associated therewith. ### Claim 29 (depends on 28) Device according to claim 28, characterised in that said means consist of a rotating drum (31), which has a plurality of axial seats (32) for a corresponding number of wax inserts and which is mounted so that, when said drum (31) is rotated, said seats (32) are located one at a time corresponding with the heating means (9). ### Claim 30 (depends on 26) Device according to claim 26, characterised in that said wax metering means also comprise a piston (18) which is located upstream of the wax insert. ### Claim 31 (depends on 30) Device according to claim 30, characterised in that said piston (18) comprises a recall spring. ### Claim 32 (depends on 30) Device according to claim 30, characterised in that said piston is actuated by compressed air. ### Claim 33 (depends on 32) Device according to claim 32, characterised in that means (22) for bleeding the compressed air are associated with said piston (18). ### Claim 34 (depends on 26) Device according to claim 26, characterised in that it also comprises means (14; 5; 8) for cooling the wax. ### Claim 35 (depends on 34) Device according to claim 34, characterised in that said cooling means comprise a compressed-air flow coming from a compressed-air source which supplies the control unit (1), there being provided in said unit (1) a pressure reducer (14) for regulating the pressure of the air which is conveyed by means of a line (5) to a nozzle (8) which is located in the vicinity of the spatula (3). ### Claim 36 (depends on 35) Device as in claim 35, characterised in that said compressed-air source is a cylinder. ### Claim 37 (depends on 35) Device according to claim 35, characterised in that said compressed-air source is a compressor. ### Claim 38 (depends on 35) Device according to claim 35, characterised in that the same compressed-air source supplies the cooling circuit and the circuit actuating the piston (18). ### Claim 39 (depends on 26) Use of a device according to claim 26 in dentistry.