The present invention provides an improved adjustable chair headrest. Specifically, the present invention comprises a double articulating dental chair headrest apparatus which has a one-handed side pushbutton release and locking mechanism. When pressed, the pushbutton temporarily disengages a movabl
The present invention provides an improved adjustable chair headrest. Specifically, the present invention comprises a double articulating dental chair headrest apparatus which has a one-handed side pushbutton release and locking mechanism. When pressed, the pushbutton temporarily disengages a movable mating plate having splined perforations away from each of two corresponding rotatable splined pin assemblies to unlock each splined pin assembly. The unlocked splined pin assemblies each rotate independently. Each splined pin assembly is also fixedly attached to one of a headrest and a backrest via an attachment plate. The two splined pin assemblies are held in relation to each other, the movable mating plate having splined perforations, and the side pushbutton release and locking mechanism, by a housing component.
대표청구항▼
1. A double articulating headrest apparatus comprising: a first rotatable splined pin assembly having a splined surface area;a second rotatable splined pin assembly having a splined surface area;a movable mating plate having a pair of splined perforations, each splined perforation corresponding to t
1. A double articulating headrest apparatus comprising: a first rotatable splined pin assembly having a splined surface area;a second rotatable splined pin assembly having a splined surface area;a movable mating plate having a pair of splined perforations, each splined perforation corresponding to the splined surface areas of the first rotatable splined pin assembly and the second rotatable splined pin assembly respectively;a spring mounted pushbutton assembly release and locking mechanism fixedly connected to the movable mating plate;a pair of springs separate from each of the first rotatable splined pin assembly and the second rotatable splined pin assembly and located between the pushbutton assembly release and locking mechanism and the movable mating plate; anda housing component housing the pin assemblies, the mating plate, pushbutton assembly release and locking mechanism, and the springs. 2. The apparatus of claim 1, wherein the pushbutton assembly release and locking mechanism is connected to the movable mating plate. 3. The apparatus of claim 1, in a locked configuration, wherein the splined surface areas of each of the first rotatable splined pin assembly and the second rotatable splined pin assembly are in contact with the splined perforations of the movable mating plate. 4. The apparatus of claim 1, further comprising a depressed pushbutton assembly release and locking mechanism in a released configuration, wherein the splined surface areas of each of the first rotatable splined pin assembly and the second rotatable splined pin assembly are spaced apart from the splined perforations of the movable mating plate. 5. The apparatus of claim 4, wherein the first rotatable splined pin assembly freely rotates about a first axis and the second rotatable splined pin assembly freely rotates about a second axis. 6. The apparatus of claim 1, wherein the housing component holds the first rotatable splined pin assembly and the second rotatable splined pin assembly in a parallel orientation, and wherein one of an exterior surface of the movable mating plate and a cover plate provides an exterior surface of the apparatus. 7. The apparatus of claim 1, wherein the pushbutton assembly release and locking mechanism is located between the first rotatable splined pin assembly and the second rotatable splined pin assembly. 8. The apparatus of claim 1, wherein the housing component comprises: a substantially flat first side surface with a first opening corresponding to the first rotatable splined pin assembly, a second opening corresponding to the second rotatable splined pin assembly, and a third opening corresponding to the pushbutton assembly release and locking mechanism; anda second side surface located opposite to the first side surface and defined by outer peripheral edges surrounding an internal open space, and wherein one of an exterior surface of the movable mating plate and a cover plate provides an exterior surface of the apparatus. 9. The apparatus of claim 1, wherein the housing component holds the first rotatable splined pin assembly and the second rotatable splined pin assembly, the movable mating plate having splined perforations, and the pushbutton assembly release and locking mechanism in a fixed spatial relationship. 10. The apparatus of claim 9, wherein the second attachment end of the splined pin axle of each of the first rotatable splined pin assembly and the second rotatable splined pin assembly extends through and outwardly from a substantially flat first side surface of the housing component. 11. The apparatus of claim 1, wherein the first rotatable splined pin assembly and the second rotatable splined pin assembly each further comprise a splined pin axle having a first splined end and a second attachment end. 12. The apparatus of claim 11, wherein the first splined end of the splined pin axle of each of the first rotatable splined pin assembly and the second rotatable splined pin assembly is held in place by a snap ring attached to a reduced circumference ring area on the first splined end. 13. The apparatus of claim 11, wherein the splined surface areas are located near the first splined end of the splined pin axle of each of the first rotatable splined pin assembly and the second rotatable splined pin assembly. 14. The apparatus of claim 13, wherein the housing component protects the movable mating plate having splined perforations and the splined surface areas of the first rotatable splined pin assembly and the second rotatable splined pin assembly. 15. The apparatus of claim 1, further comprising at least one of a headrest attachment plate connected to the first rotatable splined pin assembly and a backrest attachment plate connected to the second rotatable splined pin assembly. 16. A method of using the apparatus of claim 1, comprising: depressing the spring mounted pushbutton assembly release and locking mechanism to unlock the movable mating plate; anddisengaging the movable mating plate by moving it outwardly away and apart from each of the first rotatable splined pin assembly and the second rotatable splined pin assembly. 17. A method of using the apparatus of claim 16, further comprising: using a single hand to unlock and adjust the apparatus; andsimultaneously adjusting the apparatus along multiple axes. 18. A method of using the apparatus of claim 1, further comprising: removing pressure from the pushbutton assembly release and locking mechanism to lock the apparatus; andsimultaneously engaging the movable mating plate with each of the first rotatable splined pin assembly and the second rotatable splined pin assembly. 19. A method of using the apparatus of claim 18, further comprising: using a single hand to lock the apparatus into an adjusted position simultaneously along multiple axes. 20. A double articulating headrest apparatus comprising: a first rotatable splined pin assembly having a splined surface area, wherein the first rotatable splined pin assembly rotates about a first axis;a second rotatable splined pin assembly having a splined surface area wherein the second rotatable splined pin assembly rotates about a second axis;a movable mating plate having a pair of splined perforations, each splined perforation corresponding to the splined surface areas of the first rotatable splined pin assembly and the second rotatable splined pin assembly respectively;a housing component holding the first rotatable splined pin assembly and the second rotatable splined pin assembly in a parallel orientation and having a substantially flat first side surface with multiple openings and a second side surface located opposite to the first side surface and defined by outer peripheral edges surrounding an internal open space; anda spring mounted pushbutton assembly release and locking mechanism fixedly connected to the movable mating plate located between the first and the second rotatable splined pin assemblies.
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이 특허에 인용된 특허 (14)
Riach Jeffrey M. (Parkton MD), Adjustable headrest.
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