Dental handpiece
AssigneeJ. Morita Mfg. Corp.
InventorHitoshi Tanaka
Life of this patent
Estimating the term…
Abstract
A dental handpiece includes a main body portion, a holding portion, and a releasing mechanism. The releasing mechanism includes a cap, a cap ring, and a push cap. The cap includes an outer annular portion and an inner annular portion provided with at least one window portion. The push cap is configured to be movable to a releasing position between the outer annular portion and the inner annular portion in a direction in which the push cap is put on the cap ring, the releasing position being a position at which the holding portion is released. The cap ring includes at least one claw portion anchored to the at least one window portion from the inner side. The at least one claw portion is disposed on the inner side with respect to the inner annular portion.
Claims19
A dental handpiece configured to detachably hold a cutting tool, the dental handpiece comprising:
- a main body portion;
- a holding portion accommodated in the main body portion and configured to detachably hold the cutting tool;
- and
- a releasing mechanism configured to release the holding portion, wherein
- the releasing mechanism includes a cap attached to the main body portion, a cap ring fixed to the cap, and a push cap put on the cap ring,
- the cap includes an outer annular portion and an inner annular portion, the inner annular portion being disposed on an inner side with respect to the outer annular portion, the inner annular portion being provided with at least one window portion,
- the push cap is configured to be movable to a releasing position between the outer annular portion and the inner annular portion in a direction in which the push cap is put on the cap ring, the releasing position being a position at which the holding portion is released,
- the cap ring includes at least one claw portion anchored to the at least one window portion from the inner side, and
- the at least one claw portion is disposed on the inner side with respect to the inner annular portion,
- wherein the inner annular portion is disposed with a space being interposed between the inner annular portion and the outer annular portion in a radial direction of the outer annular portion and the inner annular portion.
A dental handpiece configured to detachably hold a cutting tool, the dental handpiece comprising:
- a main body portion;
- a holding portion accommodated in the main body portion and configured to detachably hold the cutting tool;
- and
- a releasing mechanism configured to release the holding portion, wherein
- the releasing mechanism includes a cap attached to the main body portion, a cap ring fixed to the cap, a push cap put on the cap ring, and a cap spring anchored between the cap ring and the push cap,
- the cap includes an outer annular portion and an inner annular portion, the inner annular portion being disposed on an inner side with respect to the outer annular portion, the inner annular portion being provided with at least one window portion,
- the push cap is configured to be movable to a releasing position between the outer annular portion and the inner annular portion in a direction in which the push cap is put on the cap ring, the releasing position being a position at which the holding portion is released,
- the cap ring includes at least one claw portion anchored to the at least one window portion from the inner side, and
- the at least one claw portion is disposed on the inner side with respect to the inner annular portion,
- wherein the inner annular portion is disposed with a space being interposed between the inner annular portion and the outer annular portion in a radial direction of the outer annular portion and the inner annular portion.
A dental handpiece configured to detachably hold a cutting tool, the dental handpiece comprising:
- a main body portion;
- a holding portion accommodated in the main body portion and configured to detachably hold the cutting tool;
- and
- a releasing mechanism configured to release the holding portion, wherein
- the releasing mechanism includes a cap attached to the main body portion, a cap ring fixed to the cap, and a push cap put on the cap ring,
- the cap includes an outer annular portion and an inner annular portion, the inner annular portion being disposed on an inner side with respect to the outer annular portion, the inner annular portion being provided with at least one window portion,
- the push cap includes a boss portion extending downwards from a bottom face of the push cap,
- the push cap is configured to be movable to a releasing position between the outer annular portion and the inner annular portion in a direction in which the push cap is put on the cap ring, the releasing position being a position at which the holding portion is released,
- the cap ring includes at least one claw portion anchored to the at least one window portion from the inner side, and
- the at least one claw portion is disposed on the inner side with respect to the inner annular portion,
- wherein the inner annular portion is disposed with a space being interposed between the inner annular portion and the outer annular portion in a radial direction of the outer annular portion and the inner annular portion.
Dependencies are inferred from the claim text.