Abstract:
An automobile seat comprises a replacement adjustable back rest and an adjustable head and shoulder rest. Both the back rest and the head and shoulder rest are supported on the existing seat pan for independent vertical and angular adjustment.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
   This application is a continuation-in-part application of application Ser. No. 11/358,642 filed Feb. 21, 2006, now abandoned, the entire content of which is incorporated herein by reference; which claims priority on provisional patent application Ser. No. 60/655,989 filed Feb. 24, 2005, the entire content of which is incorporated herein by reference, and provisional patent application Ser. No. 60/668,113 filed Apr. 4, 2005, the entire content of which is incorporated herein by reference. 

   TECHNICAL FIELD 
   This invention relates generally to automobile seating, and more particularly to a replacement automotive seat back having a back rest and a head and shoulder rest supported for independent vertical and angular adjustment to facilitate safer and more comfortable seating in automobiles. 
   BACKGROUND AND SUMMARY OF THE INVENTION 
   Automobile seating is available in a number of varieties. Traditionally, bucket-style seating comprises a horizontally adjusting seat pan, a reclining back rest, and a head and shoulder rest which may or may not be adjustable vertically and may or may not be tiltable forward or reclined. Back rests are traditionally not individually vertically adjustable; traditional seating options allow the entire seat assembly to be adjusted vertically, but not the back rest individually. More recently, manufacturers of luxury automobiles have installed electrical-powered seating that is adjustable in a number of ways. However, multi-adjustable seating is not available in non-luxury automobiles without considerable cost to the consumer, if available at all. 
   Seating available in non-luxury vehicles generally comprise a horizontally adjusting seat pan, a fixed height, reclining back rest, and a head and shoulder rest. Most head rests are adjustable vertically and some head rests can be tilted. Depending on the driver&#39;s height, the head rest may not adjust high enough to provide proper support. Back rests generally only adjust vertically by raising the entire seat assembly. If the bask rest is not adjustable, it may not be positioned high enough to provide proper support for the upper back and shoulders. If the seat is not adjusted properly, a person riding in the seat risks serious injuries from a collision and may suffer pain from repetitive usage of non-supportive seating. 
   The present invention comprises an adjustable automobile seat back for existing automobiles and trucks which overcomes the foregoing and other difficulties which have long sense characterized the prior art. In accordance with the broader aspects of the invention the seat back is equipped with a back rest that adjusts both vertically and angularly and a head and shoulder rest that also adjusts vertically and angularly. 
   In accordance with the more specific aspects of the invention the back rest and the head and shoulder rest are supported on frame members extending from the existing seat pan. The frame members are constructed to allow both the back rest and the head and shoulder rest to tilt and recline. Adjusting the back rest and the head and shoulder rest vertically facilitates better support of the lower back, upper back, shoulders, head, and neck. Additionally, the ability to adjust the height of the back rest allows the driver to address ergonomic concerns such as lumbar support and neck support. 
   The present invention provides consumers with the option of purchasing adjustable, comfortable seating for existing automobiles and trucks at a more affordable cost than is currently available. The adjustable seat back of the present invention may be operated either manually or utilizing electric or hydraulic motors but does not require complex moving parts or joints susceptible to the wear and tear of repeated adjustments. Installation of the seat is comparable in time and cost to that of a traditional seat. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     A more complete understanding of the present invention may be had by reference to the following Detailed Description when taken in connection with the accompanying Drawings, wherein: 
       FIG. 1  is a perspective view illustrating an automobile seat comprising the present invention installed in a typical automobile; 
       FIG. 2  is side view of the seat of  FIG. 1  illustrating the range of motion for reclining when not adjusted vertically; 
       FIG. 3  is view similar to  FIG. 2  illustrating the range of motion for reclining when adjusted vertically; 
       FIG. 4  is a front view of the seat of  FIG. 1  illustrating the seat in an unadjusted position; 
       FIG. 5  is view similar to  FIG. 4  illustrating the seat when adjusted vertically; 
       FIG. 6  is a view similar to  FIG. 4  illustrating a second embodiment of the invention; and 
       FIG. 7  is a view similar to  FIG. 5  further illustrating the second embodiment of the invention. 
   

   DETAILED DESCRIPTION 
   Referring now to the drawings, and particularly to  FIG. 1  thereof, a pair of adjustable seats  10  comprising the present invention are shown installed in an automobile. The seat  10  is a bucket-style seat installed in either as front driver and passenger seating, or as rear passenger seating in a mini-van style automobile or a sport-utility vehicle. 
     FIG. 2  comprises a side view of the seat  10 . An existing seat pan  12  is secured to the automobile frame along a set of rails which allows the seat pan to move forwards and backwards. A replacement back rest  14  sits directly atop the seat pan  12 . The back rest  14  is adjustable from an erect position to a reclined position as illustrated. A head and shoulder rest  16  rests directly atop the back rest  14 . The head and shoulder rest  16  is adjustable from an erect position to a reclined position independently of the back rest  14 . When the back rest  14  is reclined, the head and shoulder rest  16  is either reclined at the same angle as the back rest  14 , or tilted forward. The back rest  14  and/or the head and shoulder rest  16  may be equipped with air bags  18  on each side. 
     FIG. 3  comprises a side view of the seat  10  with both the back rest  14  and the head and shoulder rest  16  adjusted vertically. The back rest  14  and the head and shoulder rest  16  are affixed to frame members  20  which is embedded into the seat pan  12 . The frame members  20  are constructed of steel with joints that are lockable in several orientations to facilitate the comfort of the driver or passenger. The frame members  20  may be located either internally of the seat components or along the sides thereof. 
     FIG. 4  comprises a front view of the seat  10  with the back rest  14  and the head and shoulder rest  16  in unadjusted positions. In  FIG. 5  the back rest  14  and the head and shoulder rest  16  are shown in vertically adjusted positions. Both the back rest  14  and the head and shoulder rest  16  adjust vertically along the frame member  20  from a minimum of two (2) inches to a maximum of six (6) inches. 
     FIGS. 6 and 7  illustrate an automobile seat  22  comprising a second embodiment of the invention. Many of the component parts of the automobile seat  22  are substantially identical in construction and function to component parts of the automobile seat  10  illustrated in  FIGS. 1-5 , inclusive, and described hereinabove in conjunction therewith. Such identical component parts are designated in  FIGS. 6 and 7  with the same reference numerals utilized above in the description of the first embodiment of the invention but are differentiated therefrom by means of a prime (′) designation. 
   The automobile seat  10  of  FIGS. 6 and 7  differs from the automobile seat  10  in that the back rest  14 ′ and the head and shoulder rest  16 ′ are supported on telescoping frame members  24  which extend along the sides thereof. 
   Although preferred embodiments of the invention have been illustrated in the accompanying Drawings and described in the foregoing Detailed Description, it will be understood that the invention is not limited to the embodiments disclosed, but is capable of numerous rearrangements, modifications, and substitutions of parts and elements without departing from the spirit of the invention.