US 2921578 A
Description (OCR text may contain errors)
Jan. 19 1960 A. R. RABHAN 2,921,578
THERAPEUTIC APPARATUS OF THE CHAIR TYPE, AND THE LIKE Filed April 17. 1958 INVENTOR, ALVIN R. RABHAN,
ATTORNEY United States Patent THERAPEUTIC APPARATUS OF THE CHAIR TYPE, AND THE LIKE Alvin R. Rabhan, High Point, N.C., assignor to Guilford Lounge, Inc., a corporation of North Carolina Application April 17, 1958, Serial No. 729,188
2 Claims. (Cl. 128-33) The present invention relates to therapeutic apparatus and more particularly to electric vibrators affording action through the back of a chair on which a person sits for treatment. Provision is also made that the vibratory action may be accompanied by heat sensations.
An object of this invention is to provide a novel and improved therapeutic apparatus of the character described, including a chair having an upholstered back which houses an electrical vibrator means so associated with the upholstery springs, that the vibratory effect is magnified to extend across the entire chair back instead of localized at the region of the vibrator.
A further object is to provide a novel and improved therapeutic apparatus of the kind set forth, offering heat coupled with the vibratory action; it having been discovered by me that the heat sensations experienced in such instance, appear to be as if they pulsate in synchronism with the physical vibrations.
Another object thereof is to provide a novel and improved therapeutic apparatus in chair form. having the attributes mentioned, which is reasonably cheap to manufacture and etficient in carrying out the purposes for which it is designed.
Other objects and advantages will become apparent as this disclosure procews.
For the practice of this invention, one form it may assume, is to have a chair with its back of upholstered construction employing forwardly arched stressed springs in its interior, on which an electrical vibrator is carried so that when actuated, the vibrations produced by said vibrator, will be imparted to said springs which extend across the chair back area. An electrical heating device may be included within the chair back structure, prefer ably built into the vibrator means so that the entire mechanism may be unitary.
In the accompanying drawing forming part of this specification, similar characters of reference indicate corresponding parts in all the views.
Fig. 1 is a fragmentary perspective view of the framework of a chair having an upholstered back showing the upholstery springs, but omitting the inner padding and outer upholstery to attain clarity of illustration. This view shows an electrical vibrator means associated with said springs.
Fig. 2 is an end view of the electrical vibrator which is shown equipped with an electrical heater coil.
Fig. 3 is a section taken at line 33 in Fig. 2.
Fig. 4 is a fragmentary detail showing the preferred manner for attaching the vibrator to the upholstery springs.
In the drawing, the preferred embodiment shown comprises a chair whose frame is indicated generally by the numeral 15. At least the back of the chair is to be upholstered and hence it is provided with a series of forwardly arched tensed springs 16, 17 thereacross. It is usual practice to use springs of wire bent into sinuous form as illustrated. On the back of one or more of these springs, an electrical vibrator means 30 is mounted. Preferably, such vibrator means consists of a pair of sheet metal plates 18, 19 held in spaced assembly by the rivets 20. On a bridge piece 21 positioned between said plates and secured to them, there is an electro-magnet 22 and a vibratable armature 23. Onthe inner surface of one of said plates, an electrical heater coil 24 is mounted as for instance by the straps 25.
To mount the vibrator 30 onto the springs 16, 17, there are the bendable lugs or tabs 26 which are struck up from the metal plate 18, for engagement about an asbestos collar 27 which is about said springs at tab regions. A forwardly bowed tensed spring 29 on the chair frame, presses against the back plate 19 of the vibrator 30 and is retained by the engagement tabs 31.
It is to be especially noted that upon actuation of the vibrator 30, the springs 16, 17 to which it is secured, will also vibrate. Thus the vibratory effect is over the entire area of the chair back and not merely local at vibrator position, which was the practice heretofore.
If the heater 24 is actuated together with the vibrator 30, the patient experiences besides the vibratory effect which is now magnified and acting over a substantial area of the persons back, the sensation of a sort of pulsating heat as if heat darts impinged against the body.
This invention is equally applicable to chair seats and foot rests which are upholstered and to mattresses. Hence, it is intended that the designation chair back" shall be deemed to include such embodiments of this invention.
This invention is capable of numerous forms and various applications without departing from the essential features herein disclosed. It is therefore intended and desired that the embodiment shown herein shall be deemed illustrative and not restrictive and that the patent shall cover all patentable novelty herein set forth; reference being had to the following claims rather than to the specific description herein to indicate the scope of this invention.
1. In a therapeutic apparatus of the character described, the combination with the frame of a chair back including opposite frame members, of spaced first and second springs bridging said frame members, an electrically-operated vibrator means mounted on the rear of said first and second springs, whereby on actuation of said vibrator means, said first and second springs will vibrate and a third spring positioned between said first and second springs and bridging said opposite frame members; said third spring being associated with said vibrator means and being biased to urge the vibrator means forwardly.
2. A therapeutic apparatus as defined in claim 1, wherein all the springs are tensed and forwardly bowed.
References Cited in the file of this patent UNITED STATES PATENTS 2,582,617 August Jan. 15, 1952 2,808,827 OHara Oct. 8, 1957 2,843,113 Miller July 15, 1958