US2160149A

US2160149A - Dental plate cleanser

Info

Publication number: US2160149A
Application number: US247348A
Authority: US
Inventors: Jellinek Samuel
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-12-23
Filing date: 1938-12-23
Publication date: 1939-05-30
Anticipated expiration: 1956-05-30

Description

May 30, 1939. s. JELLINEK DENTAL PLATE CLEANSER Filed Dec. 25, 1958 Qd. H/ M7 Patented May 30, 1939 UNITED STATES PATENT OFFICE 2 Claims.

My invention has relation to improvements in dental plate cleansers, and consists in the novel features of construction more fully set forth in the specification and pointed out in the claims.

This invention embodies all of the subject matter of that of my application Serial No. 213,737, and in addition thereto embodies features more fully hereinafter explained. The invention is more particularly directed to a rotary operating brush for application to dental plates whereby the accumulations and deposits to which they are subject may be thoroughly and expeditiously removed.

The principal object of the invention is to provide a circular brush rotatably mounted on a suitable handle so that it may be rolled over the dental plate to cleanse the same. The brush is of course circular and the bristles are rounded at the periphery so as to conform to the shape of the fillet joining the gum portion of the plate to the main body thereof.

Other objects of the invention will be better apparent from a detailed description of the same in connection with the accompanying drawing,

in which:

Figure 1 is a perspective view showing my im-` proved brush being applied to an upper dental plate; Fig. 2 is a side elevation of the brush; Fig. 3 is a side elevation of the upper part of the brush looking at the opposite side from that shown in Fig. 2; Fig. 4 is a vertical longitudinal section taken on the line 4-4 of Fig. 2; and Fig. 5 is a detail view of the slot and removable pin construction.

Referring to the drawing, P represents an upper dental plate, having the usual body portion a. joined to the gurn portion b` by a fillet c. The fillet c is the most diicult part of the plate to clean because brushes of the usual construction are not readily admitted into the space between the gum portion b and body portion a. Furthermore, the curvature of the fillet c makes it extremely di'icult to pass a brush back and forth through this fillet.

I accordingly have devised a brush B, comprising a handle I, in which is secured a shank 2 fiattened at its upper extremity 3, in which there is an opening 4 to receive a stem 5, the head 5 of which is brazed or otherwise securely xed in the extremity 3 of said shank 2. A shoulder I is provided between the head 6 and stem 5, and a shoulder 8 is provided between said stem and a terminal screw portion 9.

The brush proper comprises a hub I0 in which are mounted a mass of bristles II arranged circularly around the hub, there being a plurality of sets II of bristles from one side of the hub to the other. The periphery I2 of the bristles as a whole is rounded as shown in Figures l and 4 so as to t into the fillet c between the gum portion b and body portion a, on the dental plate.

The brush is held in place on the stem 5 by a washer I3 held in Contact with the shoulder 8 by a thumb nut I4 screwed over the threaded extremity 9. SufIicient clearance is provided between the shoulder 'I and shoulder 8 of the stem 5 so that the brush is freely rotatable on said stem 5.

A plate sector I5 is secured to facef of hub Ill and is provided with an arcuate slot I6 for receiving a pin Il traversing an opening Il' in the shank 2. Said pin is connected to a bellcrank I8 pivotally mounted on a lug I9 projecting from the shank 2 of handle I, and a wire link I9 extends downwardly from the bellcrank lever alongside the handle I to which it is held by an eye 20. The free end of the link I9 is provided with a loop 2| for the finger of the operator whereby Aori pushing upwardly on the link I 9 the lever I8 is rocked to cause pin I'I to enter slot I6, and on pulling downwardly on the link I9 the lever I8 is rocked to withdraw the pin Il from the slot I6.

As stated above, the brush may be rotated along the fillet c of the plate, and because of its shape will follow the contour of this fillet so that every part thereof may be contacted by the brush and the accumulations thereon loosened and removed.

The advantage of the pin I1 and plate I5 is that if desired the brush may be arrested after partial rotation so as to operate as an ordinary brush in removing accumulations from the dental plate P. In other words, we have the combined action of a brush rolling over the parts to be cleaned and then brushing the loosened accumulations therefrom.

While I show an upper dental plate in Fig. l, it should be obvious that a lower dental plate may be treated in the same manner by my improved brush.

From the foregoing description it is apparent that my improved brush may be applied to the dental plate, together with tooth powder or tooth paste, and moved back and forth over the surface thereof to thoroughly cleanse the same without any danger of injuring the plate as only the bristles can come in contact therewith.

dle, a shank projecting from one end of said handle, a brush comprising a hub and a mass of bristles extending entirely around said hub and projecting radially therefrom, the bristles being rounded transversely to the periphery of the brush, said brush being rotatably mounted on said shank, and a coupling device interposed between the handle and the brush for a predetermined limited lost rotary motion.

SAMUEL JELLINEK.