Removable nozzle for a sandblaster handpiece
DCFirst Claim
1. A device for directing an abrasive-laden gas stream against a surface, which device comprises(a) a pressurized gas source,(b) a source of abrasive materials,(c) a conduit for incorporating particles from the source of abrasive materials with the pressurized gas to form an abrasive-laden gas stream,(d) a handpiece having a conduit for the abrasive-laden gas stream and a separate conduit for pressurized gas, and(e) associated with the handpiece, a nozzle head for directing the abrasive-laden gas stream against a surface, wherein the nozzle head (i) is removable from the handpiece, (ii) has a mixing chamber into which the pressurized gas and the abrasive-laden gas stream flow, (iii) has an exit orifice tube leading from the mixing chamber through which the abrasive-laden gas stream may exit to be directed against a surface, and (iv) is rotatable relative to the handpiece.
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Litigations
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Accused Products
Abstract
A removable nozzle head for a miniature sandblaster used for medical or industrial applications is disclosed comprising a nozzle, a handpiece nozzle adapter, a nozzle locking ring where the nozzle and nozzle handpiece adapter each have corresponding first and second bore in fluid communication to allow delivery of independent supplies of a gas and an abrasive laden stream to a mixing chamber in the nozzle for delivery through a orifice tube to a surface to be abraded, cleaned or modified.
30 Citations
21 Claims
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1. A device for directing an abrasive-laden gas stream against a surface, which device comprises
(a) a pressurized gas source, (b) a source of abrasive materials, (c) a conduit for incorporating particles from the source of abrasive materials with the pressurized gas to form an abrasive-laden gas stream, (d) a handpiece having a conduit for the abrasive-laden gas stream and a separate conduit for pressurized gas, and (e) associated with the handpiece, a nozzle head for directing the abrasive-laden gas stream against a surface, wherein the nozzle head (i) is removable from the handpiece, (ii) has a mixing chamber into which the pressurized gas and the abrasive-laden gas stream flow, (iii) has an exit orifice tube leading from the mixing chamber through which the abrasive-laden gas stream may exit to be directed against a surface, and (iv) is rotatable relative to the handpiece.
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8. A nozzle head in combination with a nozzle head adapter which combination is useful in a device for directing an abrasive-laden gas stream against a surface, wherein
the nozzle head has a forward end and a rearward end and comprises a first longitudinal bore, a second longitudinal bore located radially from the first longitudinal bore, each first and second bore leading to a mixing chamber within the forward end of the nozzle head, an exit orifice tube leading out of the mixing chamber, and a face at the rearward end of the nozzle head, and the nozzle head adapter comprises a first longitudinal bore, a second longitudinal bore located radially from the first longitudinal bore of the adapter, a face at a forward end of the adapter to be aligned with the face at the rearward end of the nozzle head, said forward-end adapter face having an annular groove in fluid communication with said second longitudinal bore of the adapter so that when the rearward face of the nozzle head is aligned with the forward-end adapter face, the first longitudinal bore of the nozzle head communicates with the first longitudinal bore of the nozzle head adapter and the second longitudinal bore of the nozzle head and nozzle head adapter fluidly communicate with each other through the annular groove but do not communicate with first longitudinal bores of the nozzle head or nozzle head adapter, wherein the first longitudinal bore in the nozzle head and the first longitudinal bore in the nozzle head adapter are adapted for fluid communication with a source of pressurized gas and the second longitudinal bore in the nozzle head and the second longitudinal bore in the nozzle head adapter are adapted for fluid communication with a source of gas-carrying abrasive particles, so that a stream of gas and a stream of gas-carrying abrasive particles mix in the mixing chamber and exit through the exit tube.
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15. An apparatus that comprises (A) a nozzle head, (B) a nozzle head adapter, and (C) a locking ring to attach the nozzle head to the nozzle head adapter, wherein
(A) the nozzle head has a forward end and a rearward end and further comprises a first longitudinal bore, a second longitudinal bore located radially from the first longitudinal bore, each first and second bore leading to a mixing chamber within the forward end of the nozzle head, an exit orifice tube leading out of the mixing chamber, a face at the rearward end of the nozzle head, and a shoulder flange that extends radially beyond the outer side of the rearward end of the nozzle head; -
(B) the nozzle head adapter comprises a body having a forward end and rearward end, a first fluid-carrying bore in fluid communication with said first longitudinal bore in the nozzle head, a face at the forward end of the nozzle head adapter having an annular groove, a second fluid-carrying bore in fluid communication with said annular groove and second longitudinal bore in the nozzle head, but not in fluid communication with the first longitudinal bore, and (C) the locking ring engages the flange on the nozzle head to attach the nozzle head to the nozzle head adapter. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification