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US 10,973,609 B2Granted
Vibrating crown and bridge remover
OwnerZbigniew Ponainventor
Life of this patent
Estimating the term…
Abstract
A dental crown removal apparatus is provided, including a handle for placement in an operator's hand, an elongated post projecting along a first axis, the post being connected for reciprocal motion with respect to the handle, a motor in the handle for moving the post, a tool adapter connected with the post opposite the handle, the tool adapter having an extension arm extending away from the handle with a pivot arm connected with the extension arm and spaced from the handle, and first and second opposing jaws having claw ends spring biased together, the first and second jaws having independent and unitary pivotal connection with the pivot arm.
Claims22
A dental crown removal apparatus comprising:
- a handle for placement in an operator's hand;
- an elongated post projecting along a first axis, said post being connected for reciprocal motion with respect to said handle along said first axis;
- a motor in said handle for moving said post;
- a tool adapter connected with said post along an end of said post opposite said handle, said tool adapter having an extension arm extending away from said handle with a pivot arm connected with said extension arm spaced from said handle;
- first and second opposing jaws for gripping a dental crown, said jaws having claw ends spring biased together, said first and second jaws having independent and unitary pivotal connection with said pivot arm and, wherein the operator can adjust one of said jaws by adjusting said claw end of said jaw the claw end of said jaw outwardly by pivoting said jaw on the pivot arm against the spring biasing force, and;
- wherein said pivot arm has an axis perpendicular to an axis of said extension arm and to said first axis and said jaws pivot in a plane parallel to the first axis and to said extension arm axis.
3 more elements
A dental crown removal apparatus comprising:
- a handle for placement in an operator's hand;
- an elongated post projecting along a first axis, said post being connected for reciprocal motion with respect to said handle along said first axis;
- a motor in said handle for moving said post;
- a tool adapter connected with said post along an end of said post opposite said handle, said tool adapter having a saddle for placement on said post, said tool adapter having an extension arm extending from said saddle, said tool adapter having a pivot arm perpendicularly connected with said extension arm with an axis of said pivot arm perpendicular to an axis of said extension arm and spaced from said handle;
- an upper jaw for gripping a dental crown, said upper jaw having a pivotal connection with said pivot arm;
- a lower jaw for gripping a dental crown, said lower jaw opposing said upper jaw, said lower jaw having a pivotal connection with said pivot arm;
- a spring biasing a claw end of said jaws together;
- and
- wherein said upper and lower jaws pivot in a plane parallel with said first axis and parallel to said axis of said extension arm and said upper and lower jaws pivotal plane bisects said post and said jaws having a pivotal axis intersecting said first axis.
6 more elements
A dental crown removal apparatus comprising:
- a handle for placement in an operator's hand;
- an elongated post projecting along a first axis, said post being connected for reciprocal motion with respect to said handle along said first axis;
- a motor in said handle for moving said post;
- a tool adapter connected with said post along an end of said post opposite said handle, said tool adapter being rotatable with respect to said handle, said tool adapter having an extension arm extending away from said handle, said tool adapter having a cylindrically-shaped pivot arm perpendicularly connected with said extension arm and spaced from said handle;
- an upper jaw for gripping a dental crown, said upper jaw having a pivotal connection with said pivot arm via twin spaced apart eyelets;
- an adjustable length lower jaw for gripping a dental crown, said lower jaw opposing said upper jaw, said lower jaw having a pivotal connection with said pivot arm via twin eyelets, said upper jaw eyelets laterally fitting within said lower jaw eyelets;
- a torsion spring biasing a claw end of said jaws together, said torsion spring having a coil portion encircling said pivot arm;
- and
- wherein said upper and lower jaws pivot in a plane that is parallel with and laterally offset from said first axis and said upper and lower jaws twin eyelet pivotal connections with said pivot arm having independent and unitary pivotal connection with said pivot arm.
6 more elements
A dental crown removal apparatus comprising:
- a handle for placement in an operator's hand;
- an elongated post projecting along a first axis, said post being connected for reciprocal motion with respect to said handle along said first axis;
- a motor in said handle for moving said post;
- a tool adapter connected with said post along an end of said post opposite said handle, said tool adapter having an extension arm extending away from said handle with a pivot arm connected with said extension arm spaced from said handle;
- first and second opposing jaws for gripping a dental crown, said jaws having claw ends spring biased together, said first and second jaws having independent and unitary pivotal connection with said pivot arm and, wherein the operator can adjust one of said jaws by adjusting said claw end of said jaw the claw end of said jaw outwardly by pivoting said jaw on the pivot arm against the spring biasing force, and;
- wherein said extension arm is lateral of said first axis a first distance and said jaws pivot in a plane lateral of said first axis at a distance from said first axis less than said first distance, and wherein the jaws pivot plane is more adjacent to said extension arm than to said first axis.
3 more elements
Dependencies are inferred from the claim text.