Patent ID: 6139106
Filing Date: 2000-10-31
Classification: A61C,A61G

Abstract:
A headrest for dental use, said headrest comprising:a. a base, said base comprising an outer support tube and an inner support tube, said inner support tube being telescoping within said outer support tube, said inner support tube having a front face and a rear face, said outer support tube having a front face and a rear face, said inner support tube including a plurality of holes placed in a linear row on the front face of said inner support tube, said outer support tube including a plurality of holes placed in a linear row on the front face of said outer support tube, said inner support tube including two ends, a connected end and an extended end, said outer support tube including two ends, a connected end and an extended end, said connected end of said inner support tube being in contact with said connected end of said outer support tube,b. a pair of support arms, a first support arm and a second support arm, both said first support arm and said second support arm designed in the shape of a fulcrum, both said first support arm and said second support arm including an inner side, an outer side, and two end sides, a front end side and a rear end side, said front end side and said rear end side of both said first support arm and said second support arm extending further down than said inner side and said outer side of both said first support arm and said second support arm, said first support arm and said second support arm each having a connected end and an open end, said connected end of said front end side of said first support arm pivotly mounted to the front side of said outer support tube, said connected end of said rear end side of said first support arm pivotly mounted to the rear face of said outer support tube, said connected end of said front end side of said second support arm pivotly mounted to the front face of said inner support tube, said connected end of said rear end side of said second support arm pivotly mounted to the rear face of said inner support tube,c. a linkage, said linkage being a cylindrical metal rod located within said outer support tube and said inner support tube, said linkage extending from approximately the extended end of said outer support tube to the extended end of said inner support tube, said linkeage including a locking pin, said locking pin extending outward from said linkage, said locking pin being circumferentially surrounded by a spring, said spring providing outwardly extending force upon said locking pin,d. a push rod, said push rod being a flat cylindrical plate rigidly fixated within said inner support tube near said extended end of said inner support tube, said push rod including an inner face and an outer face, said linkage being connected to the center point on the inner face of said push rod,e. a button, said button being attached to the outer face of said push rod, said button extending outside of the extended end of said inner support tube,f. a coiled spring, said coiled spring surrounding said inner support tube from the point of contact with said outer support tube to the extended end of said inner support tube, said coiled spring providing an outwardly extending tension upon said outer support tube and said push rod,g. a follower arm, said follower arm being a cylindrical metal rod with two ends, a first end and a second end, said first end of said follower arm being attached to said first support arm by insertion through a hole, said hole being located on said front side edge of said first support arm immediately above said pivotal attachment of said first support arm to said outer support tube, said second end of said follower arm being attached to a hole, said hole being located in the front side edge of said second support arm, said hole being located immediately above said pivotal attachment of said second support arm to said inner support tube,h. a vinyl covering, said vinyl covering enveloping the first support arm, said second support arm, said inner support tube, and said outer support tube, said vinyl covering forming a semicircular edge, said semicircular edge being used a head support, said semicircular edge including a pair of head support pads, a first head support pad and a second head support pad, said first head support pad being located opposite said second head support pad, said first head support pad and said second head support pad being designed to provide support to the sides of a dental patient's head,i. whereby a user pushes said button in, said button causes said push rod and said inner support tube to be further telescoped within said outer support tube, thereby causing said follower arm to adjust the angle of said first support and said second support arm, whereby said locking pin will be able to be set into one of said plurality of holes on said front face of said inner support tube and said outer support tube, whereby said coiled spring will be compressed and have greater tension.