The present invention pertains generally to toothbrush devices. More specifically, the invention relates to a composite toothbrushes with a composite toothbrush head including safety features, with added durability design, particularly useful for prisons, hospitals and patient/elderly care.
Prisons and other detention systems restrict certain hygiene items used by inmates to prevent the use of an otherwise safe device as a weapon. For example, conventional toothbrushes are not permitted to be used by many prison systems because they may be fashioned into a pointed shaft or rod or otherwise known as a shank, which could be used to endanger other inmates or themselves, as well as security personnel. Psychiatric and other mental health systems likewise require toothbrushes that cannot cause self-injury or harm to care givers or security personnel.
A previous attempt to provide a safe alternative toothbrush for use by inmates was a toothbrush simply having a brush head and a very short handle. However, such handle is so short that it must be grasped by only the thumb and forefinger of the user. Hence, this toothbrush is awkward to use. The fingers of the user may be required to enter the mouth to reach all of the teeth. Such a difficult to use toothbrush may only provide marginal teeth cleaning and be uncomfortable to use. Further ineffectual cleaning procedures may cause, or at the least contribute to, poor dental hygiene, thereby leading to costly dental procedures in some instances.
Toothbrushes having a flexible handle, therefore deterring inmates' ability to fashion into a shank have further been heretofore known. One such example was proposed by inventor Phillips, entitled “Flexible Toothbrush,” U.S. Pat. No. 6,295,686. This particular design has a handle portion, reference character sixteen, that is flexible. The handle portion is further coupled to a neck portion, reference character fourteen. The material used in the toothbrush design additionally comprises 50% thermoplastic rubber and 50% polypropylene. As compared to Philips however, the present invention incorporates added design benefits that improve wear characteristics and facilitate use.
Also of concern in the technical field is a bristle retention requirement. Particularly, the bristles must remain secured in place for reasonable longevity. This is of particular concern for prison toothbrushes because bristle retention is very poor when configured to flexible material. Accordingly, present inventor has experimented with composite toothbrush head designs. A related example is provided by Leversby et al., entitled “Toothbrush Structure,” U.S. Pat. No. 6,276,020. Leversby and his co-inventors describe a toothbrush design with two materials included in the molding process to generally improve strength of the toothbrush and provide a non-slip surface for grasping. There remains a need, however, for a toothbrush head being resilient for strength and bristle retention but however having an outer softer material.
The present invention specifically addresses and alleviates the above mentioned deficiencies associated with the prior art. More particularly, the present invention in a first aspect is a composite toothbrush comprising: a rigid polymer material comprising a first volume; a pliable flexible material comprising a second volume, wherein the second volume is greater than the first volume. Further, the pliable flexible material provides a softness applicable to safety in a prison environment or an institutional environment.
Also in this aspect, the invention is characterized as comprising an inner toothbrush head at least partially made from the rigid polymer material; and an outer toothbrush head at least partially made from the pliable flexible material. Also the invention comprises a flexible handle at least partially made from the pliable flexible material; and a pair of pin connectors protruding from the inner toothbrush head, the pin connectors assisting connecting the inner toothbrush head to the outer toothbrush head.
In still a second aspect, the invention is directed to a composite toothbrush having a composite head, the composite head comprising: a rigid inner core having a plurality of bristle holes for retention and holding a plurality of toothbrush bristles, the rigid inner core made from a 1st material; and a pliable flexible material substantially or entirely surrounding the rigid inner core on a left and a right side in the bottom plan view underside aspect, the pliable flexible material being made from a 2nd material.
Still further the invention in this aspect may be characterized wherein the composite head further comprises a tip of the rigid inner core being covered with the pliable flexible material; and an end of the rigid inner core opposite the tip further having the pliable flexible material adjacent thereto. Also further the composite head has an opposite side of the rigid inner core, the opposite side opposing a side having the plurality of bristle holes, the opposite side substantially covered by pliable flexible material. And further the composite head has a pair of pin connectors extending from the opposite side of the toothbrush head, the toothbrush head thereby being substantially encased by the pliable flexible material with the exception of the pin connectors and the side having the plurality of bristles not being fully encased in the pliable flexible material.
Yet further, the invention in this aspect may be characterized wherein the pair of pin connectors are offset diagonally with respect to a longitudinal axis of the toothbrush, the longitudinal axis being equidistance to each of the pair of pin connectors. Another feature of the invention is that the composite head toothbrush has a flexible handle at least partially made from the 2nd material, the pliable material, the toothbrush further thereby being a safety toothbrush. Still further, the flexible handle further includes an enlarged curvilinear flat rear end portion wherein further the toothbrush is able to be flexed into substantially a “L” or “C” shape.
These, as well as other advantages of the present invention will be more apparent from the following description and drawings. It is understood that changes in the specific structure shown and described may be made within the scope of the claims, without departing from the spirit of the invention, such as a variety of positions for pin placement as described herein.
While the apparatus and method has or will be described for the sake of grammatical fluidity with functional explanations, it is to be expressly understood that the claims, unless expressly formulated under 35 USC 112, are not to be construed as necessarily limited in any way by the construction of “means” or “steps” limitations, but are to be accorded the full scope of the meaning and equivalents of the definition provided by the claims under the judicial doctrine of equivalents, and in the case where the claims are expressly formulated under 35 USC 112 are to be accorded full statutory equivalents under 35 USC 112. The invention can be better visualized by turning now to the following drawings wherein like elements are referenced by like numerals.
The novel features of this invention, as well as the invention itself, both as to its structure and its operation, will be best understood from the accompanying drawings, taken in conjunction with the accompanying description, in which similar reference characters refer to similar parts, and in which:
Various inventive features are described below that can each be used independently of one another or in combination with other features.
Initially, with reference to
With regard to
With regard to
With regard to
Further with regard to
Yet further with regard to
With further reference to
With regard to
Many alterations and modifications may be made by those having ordinary skill in the art without departing from the spirit and scope of the invention. Therefore, it must be understood that the illustrated embodiments have been set forth only for the purposes of example and that it should not be taken as limiting the invention as defined by the following claims. For example, notwithstanding the fact that the elements of a claim are set forth below in a certain combination, it must be expressly understood that the invention includes other combinations of fewer, more or different elements, which are disclosed in above even when not initially claimed in such combinations.
While the particular Composite Toothbrush Having Safety Features and Methods of Making Same as herein shown and disclosed in detail is fully capable of obtaining the objects and providing the advantages herein before stated, it is to be understood that it is merely illustrative of the presently preferred embodiments of the invention and that no limitations are intended to the details of construction or design herein shown other than as described in the appended claims.
Insubstantial changes from the claimed subject matter as viewed by a person with ordinary skill in the art, now known or later devised, are expressly contemplated as being equivalently within the scope of the claims. Therefore, obvious substitutions now or later known to one with ordinary skill in the art are defined to be within the scope of the defined elements.
This patent application is a continuation-in-part, and therefore contains subject matter claiming benefit of the priority date of U.S. patent application Ser. No. 15/854,097, filed on Dec. 26, 2017 entitled COMPOSITE HEAD TOOTHBRUSH HAVING SAFETY FEATURES, now U.S. Pat. No. 10,334,940, which is a continuation-in-part of U.S. patent application Ser. No. 14/099,637 filed on Dec. 3, 2013 and entitled METHOD FOR MAKING SAFETY TOOTHBRUSHES, now abandoned, which in turn is a continuation-in-part of U.S. patent application Ser. No. 11/653,153 filed on Jan. 12, 2007 and entitled, PACKAGED TOOTHBRUSH AND TOOTHBRUSH CONTAINER AND METHODS OF MAKING SAME, now U.S. Pat. No. 9,066,583; which is further a continuation-in-part of, and claims benefit of the priority date of U.S. patent application Ser. No. 11/563,671, now U.S. Pat. No. 8,448,285 filed on Nov. 27, 2006 and entitled TOOTHBRUSH AND METHODS OF MAKING AND USING SAME, accordingly, the entire contents of these issued patents and patent applications are hereby expressly incorporated by reference.
Number | Name | Date | Kind |
---|---|---|---|
1592292 | Booty | Jul 1926 | A |
1645965 | Neumerkel | Oct 1927 | A |
1717125 | Spitz | Jun 1929 | A |
1908510 | Dodson | May 1933 | A |
1945559 | McNally | Feb 1934 | A |
4020521 | Valesquez | May 1977 | A |
5291878 | Lombardo et al. | Mar 1994 | A |
5609890 | Boucherie | Mar 1997 | A |
5628082 | Moskovich | May 1997 | A |
5630244 | Chang | May 1997 | A |
5864915 | Ra | Feb 1999 | A |
6066282 | Kramer | May 2000 | A |
6276020 | Leversby et al. | Aug 2001 | B1 |
6295686 | Phillips | Oct 2001 | B1 |
6298516 | Beals et al. | Oct 2001 | B1 |
6546583 | Rohrig | Apr 2003 | B1 |
6668416 | Georgi et al. | Dec 2003 | B1 |
7334286 | Kayser | Feb 2008 | B2 |
20010013152 | Meyer et al. | Aug 2001 | A1 |
20020182282 | Lanvers | Dec 2002 | A1 |
20030116884 | Wagstaff | Jun 2003 | A1 |
20030125224 | Fischer et al. | Aug 2003 | A1 |
20030208870 | Jimenez | Nov 2003 | A1 |
20120324664 | Carpenter | Dec 2012 | A1 |
Number | Date | Country |
---|---|---|
3628722 | Aug 1986 | DE |
19624962 | Jan 1998 | DE |
0336641 | Nov 1989 | EP |
0015077 | Mar 2000 | WO |
Number | Date | Country | |
---|---|---|---|
20190320783 A1 | Oct 2019 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 15854097 | Dec 2017 | US |
Child | 16459341 | US | |
Parent | 14099637 | Dec 2013 | US |
Child | 15854097 | US | |
Parent | 11653153 | Jan 2007 | US |
Child | 14099637 | US | |
Parent | 11563671 | Nov 2006 | US |
Child | 11653153 | US |