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Publication numberUS738960 A
Publication typeGrant
Publication dateSep 15, 1903
Filing dateJul 13, 1903
Priority dateJul 13, 1903
Publication numberUS 738960 A, US 738960A, US-A-738960, US738960 A, US738960A
InventorsHarry Vaughan, James W Arrowsmith
Original AssigneeHarry Vaughan, James W Arrowsmith
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Clinical-thermometer shield.
US 738960 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 738,960. PATENTED SEPT.15 ,1903.




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No, 738,966. Iatented September 15, 1903.





SPECIFICATION forming part of Letters Patent No. 738,960, dated September 15, 1903. Application filed July 13, 1903. Serial No. 165.364- (ll'o model.)

To all whom it may concern.-

Be it known that we, HARRY VAUGHAN and J AMESW. Annowsivnrmcitizen's of the United States, residing at Morristown, in the county of Morris and State of New Jersey, have invented certain new and useful Improvements in Clinical- Thermometer Shields, of which the following is a specification.

Our invention relates to clinical-thermomero ter shields; and its objectrs to provide a temporary covering that may be discarded after once using, thereby rendering the transfer of infected matter from one patient to another practically impossible, for the reason that neither the bulb nor the body of the clinicali thermometer ever'comes into actual contact with the person whose temperature is being taken.

Another object of our invention is the pro-. 2o duction of thermometer-shields for single application which fit the bulbof a clinical thermometer and lie closely against the sides of the bulb, excluding all the air from immediately about the bulb, in order that the heat reaching the mercury may be transmitted wholly or in greater part by conduction of walls in contact throughout and not by the convection of an intervening air-space. Our invention consists of an exceedingly 3o thin, flexible, and substantially tubular sheath. It is usually made of diaphanous india-rubber possessing a high degree of elasticity. The latter quality of elasticity is not,

upon itself in the process of manufacture. India-rubber is the preferred material, as it may be formed exceedingly thin, sufliciently attenuated, in fact, to become, upon application, transparent in a degree. When, t'herefore, our invention is drawn on a clinical thermometer, which is done by inserting the end of the thermometer d into the pouch a and unrolling the normally-rolled edge 1) toward the top of the instrument, the scale is readable through the skin of the shield, although not greatly stretched by the operation.

We have found in practice that a skin of rubber can be made thin enough to cause no inconvenience in reading the scale when it is covered. by the shield, as shown in Fig. 2.

In many instances of use it is not necessary to roll the shield. over the scale, and it may be partly unrolled, covering the bulb and part only of the thermometer-stem. When a reading has been taken, the shield is rolled and slipped from the thermometer and thrown away. No part of the instrument touches the patient and no infection can result. It will be noted, further, that thebulb of the thermometer is covered-practically skin-tight by the shield, which is yet easily removable, and that every particle of air is excluded from about the bulb as far as possible. It is not thought needful to enlarge here upon the established fact of the lack of conductivity of heat by'air. It will be sufficient to state that while both the rubber shield and the however, absolutely essential, and other thin glass bulb conduct heat and when those two 5 membranous material can be employed, proparts are directly in contact the mercury is vided it be impervious to moisture and inpromptly and fully expanded, with an intersoluble or difficultly soluble by fluid animal vening air-space, the registration of the deexcreta. gree of heat by the thermometer is indefiv The accompanying drawings illustrate the nitely delayed and its accuracy rendered ex- 40 invention. tremely doubtful. When the air-space is go Figure 1 is a side view in partly vertical present about the bulb, the mercury is never section; and Fig. 2 shows a clinical thermomfully affected by radiation across such aireter with our invention applied, the shield space, for the reason that both the shield and being shown in section. the glass out off radiation very largely. In- 45 Like letters refer to like parts throughout. timate and complete surface-contact permits The scale of drawings is greater than 210- direct and rapid heat conduction from the tual size. patient to the mercury when the shield as As illustrated in Fig. 1, our invention is a invented by us and described herein is drawn skin-like hollow sheath Ct, closed at the end '0 over a thermometer, because all theair is ex- 50 and having the edge 17 of its mouth rolled eluded from about the bulb. rco

Having thus described our invention, what we claim, and desire to secure by Letters Patent of the United States, is-

1. The combination with a clinical thermometer of a temporary shield applied thereto while in use and closely covering the bulb of the thermometer and excluding the air from said bulb, such shield being a sheath closed at one end, impervious to moisture and insoluble, and consisting of thin, flexible material.

2. The combination with a clinical thermometer of a temporary shield applied thereto while in use and closely covering the bulb of the thermometer and excluding the air from said bulb, such shield being a sheath closed at one end, impervious to moisture and insoluble, and consisting of thin india- 3. A clinical-thermometer shield comprising a sheath closed at one end, consisting of In testimony whereof we affix our signatures in presence of two witnesses.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2446760 *May 24, 1945Aug 10, 1948Plating Processes CorpLeak detector for the protective well of a thermal instrument sensitive element
US2459400 *Mar 12, 1942Jan 18, 1949Wingfoot CorpAirplane engine package and method of packaging the same
US2677965 *Dec 19, 1947May 11, 1954Saffir Jacob AHeat conducting sheath for clinical thermometers
US2915175 *Jul 16, 1957Dec 1, 1959Marcus DiamantProtective sheath for fever thermometers
US2981108 *Oct 24, 1957Apr 25, 1961Arnold K AndersenThermometer assembly for nursing bottles
US3190436 *Jun 25, 1963Jun 22, 1965Marcus DiamantProtective sheath for clinical thermometers
US3528292 *Jul 2, 1968Sep 15, 1970Medical Devices Co IncLong life thermometer
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US5833367 *Nov 12, 1996Nov 10, 1998Trutek, Inc.Tympanic thermometer probe cover
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US6042266 *Mar 30, 1998Mar 28, 2000Trutek, Inc.Tympanic thermometer probe cover
US6123454 *Jun 11, 1999Sep 26, 2000Trutek, Inc.Tympanic thermometer disposable probe cover with further stretching prevention structure
US6171259Nov 29, 1993Jan 9, 2001David W. FisherFecal specimen sampling and analysis
US6186959Mar 12, 1999Feb 13, 2001Trutek, Inc.Tympanic thermometer with modular sensing probe
US6461037 *Feb 28, 1999Oct 8, 2002Alaris Medical Systems, Inc.Thermometer probe for use with disposable probe cover
US20080251313 *Apr 16, 2007Oct 16, 2008Knight Joann FDisposable cover for stethoscope head
USRE34599 *Mar 25, 1992May 3, 1994Diatek IncorporatedDisposable probe cover assembly for medical thermometer
Cooperative ClassificationG01K1/083