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US 5,176,423 AGranted
Apparatus for securing an instrument holder to a dental chair
AssigneeA-dec, Inc.
InventorsGeorge K. Austin, Jr., Bradley A. Rice
Life of this patent
Estimating the term…
Abstract
The apparatus secures a dental instrument holder to the movable backrest of a dental chair. The apparatus maintains a preselected orientation of the holder irrespective of movement of the backrest.
Claims14
An attachment apparatus for attaching a dental instrument holder to a backrest of a chair that is rotatable between a tilted position and an upright position by extension and retraction of an actuator member, the apparatus comprising:
- a first pivot member attachable to the chair for rotation relative thereto;
- an arm mounted to the first pivot member for rotation with the first pivot member and adapted for attachment to an instrument holder, the arm assuming a first orientation relative to horizontal when mounted to the first pivot member, the arm being adjustably mounted to the first pivot member to permit forced rotation of the arm relative to the pivot member thereby to change the orientation of the arm relative to horizontal;
- a second pivot member attachable to the chair and rotatable in opposing first and second directions;
- a linkage assembly connected between the first and second pivot members for transmitting the rotation of the second pivot member to the first pivot member;
- and
- a rigid drive link having one end connected to the second pivot member and the other end connectable to the actuator member, the actuator being operable for rotating the second pivot member in the first direction and in the second direction, the linkage assembly being configured and arranged so that the arm member substantially remains in the first orientation irrespective of rotation of the backrest.
3 more elements
An attachment apparatus for a dental chair, comprising:
- a seat base;
- a backrest connected to the seat base, the backrest being rotatable between a tilted position and an upright position by extension and retraction of an actuator member that is mounted to the chair seat;
- a first pivot member attached to the backrest for rotation relative to the backrest;
- an arm mounted to the first pivot member for rotation with the first pivot member and adapted for attachment to an instrument holder, the arm assuming a first orientation relative to horizontal when mounted to the first pivot member
- a second pivot member attachable to the chair backrest and rotatable in opposing first and second directions;
- a linkage assembly connected between the first and second pivot members for transmitting the rotation of the second pivot member to the first pivot member;
- and
- a rigid drive link having one end connected to the second pivot member and the other end connected to the actuator member so that extension of the actuator member rotates the second pivot member in the first direction and so that retraction of the actuator member rotates the second pivot member in the second direction, the linkage assembly being configured and arranged so that the arm substantially remains in the first orientation irrespective of rotation to the backrest;
- and brackets attached to the backrest, the brackets having apertures formed therein for receiving a manifold that is constructed to connect with tubes, the manifold being free to rotate relative to the brackets.
6 more elements
Dependencies are inferred from the claim text.