A head and neck rest for automobile or airplane seats comprises a headpiece and means for mounting the headpiece above the backrest of a seat. The mounting means include a sleeve member which is fixed within the backrest and an upright rod longitudinally traversing the sleeve. The sleeve and the headpiece are longitudinally adjustable on the rod for varying the position of height of the headpiece above the backrest. Spring means preferably consisting of rubber blocks are engaged between the internal surface of the sleeve and the rod to exert pressure on the sleeve in a direction from the front towards the back of the headpiece for frictionally arresting the headpiece in its adjusted position on the rod. Friction-increasing inserts may be arranged between the rod and the internal surface of the sleeve.
A headrest mounted above a dental chair backrest can readily be positioned by means of a headrest bar engaging a locking device affixed to the chair backrest. The locking device comprises a pair of resilient rubber surfaces or other high friction material surfaces which grip or contact the headrest bar to positively lock the headrest in position. By merely pushing the headrest to a more vertical position, the headrest bar is caused to lose contact with the gripping surfaces. A spring-loaded block is selectively disposed through each of the high friction surfaces to urge the bar in stronger contacting relation with said high friction surfaces in any operating position of the headrest, the blocks themselves also providing low friction surfaces against which the bar may ride when the headrest is being repositioned by initially pushing it to a more vertical position.
A headrest mounted to the top of a dental chair backrest can readily be positioned by means of a headrest bar engaging a locking device affixed to the chair backrest. The locking device comprises a pair of resilient rubber surfaces which grip or contact the headrest bar to positively lock the headrest in position. By merely pushing the headrest to a more vertical position, the gripping or contacting of the rubber surfaces to the headrest bar is substantially eliminated to thus permit positioning of the headrest. Release of headrest will return it once again to a locked position.
In a head support assembly comprising a head support member carried on a mounting bar member in such a way as to be adjustable in respect of height and/or inclination thereon, the mounting bar member carries at least one annular flexible element co-operating with portions of the head support member and in frictional engagement relationship with the mounting bar member and/or the portions of the head support member.
An orthopedic pillow for helping to correct and helping to prevent hyperkyphosis and rigidity of the thoracic spine and for returning the normal lordotic cervical curve comprises a base panel having a first end portion, a second end portion, a left top surface segment extending between the first end portion and the second end portion, and a right top surface segment extending between the first end portion and the second end portion, a first crown for supporting the thoracic spine, the first crown being formed on the first end portion of the base panel, extending toward the second end portion of the base panel, and dividing at least partially the left top surface segment from the right top surface segment, and a transition ramp formed in the first end portion of the first crown for supporting the spine just under and below the shoulder blades of a reclining person. Other embodiments of the invention include a cylindrical pillow having a transition ramp, a removable pillow apparatus for supporting the neck of a person sitting in a bucket seat of a car, and a chair having a pillow having a substantially semi-cylindrical shape with a center axis that extends between its upper end portion and its lower end portion.
An orthopedic pillow for helping to correct and helping to prevent hyperkyphosis and rigidity of the thoracic spine and for returning the normal lordotic cervical curve comprises a base panel having a first end portion, a second end portion, a left top surface segment extending between the first end portion and the second end portion, and a right top surface segment extending between the first end portion and the second end portion, a first crown for supporting the thoracic spine, the first crown being formed on the first end portion of the base panel, extending toward the second end portion of the base panel, and dividing at least partially the left top surface segment from the right top surface segment, and a transition ramp formed in the first end portion of the first crown for supporting the spine just under and below the shoulder blades of a reclining person. Other embodiments of the invention include a cylindrical pillow having a transition ramp, a removable pillow apparatus for supporting the neck of a person sitting in a bucket seat of a car, and a chair having a pillow having a substantially semi-cylindrical shape with a center axis that extends between its upper end portion and its lower end portion.
