|Publication number||USRE24190 E|
|Publication date||Jul 31, 1956|
|Publication number||US RE24190 E, US RE24190E, US-E-RE24190, USRE24190 E, USRE24190E|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Jul -31, 1956 L, J. KROKO ELAPSED TIME INDICATOR I Original Filed May 19, 1952' ,uvmvron. LEONARD J. KROKO A TTORNEY 1, 24,190 nmrsn'o man INDICATOR Leonard J. Kroko, Cleveland, Ohio, asdgnor to Jack &
l-lelntz, lnc.,- Cleveland, Ohio, a corporation of Dela- Original No. '2,655,634, dated 0mm 13,1953, Serial No. 288,141, May 19,1952. Application for reissue February 14, 1955, Serial No. 488,176 I 4 Claims. (Cl- 324-68) Matter enclosed in heavy brackets the original patent but forms no part of rehsue specification: matter printed In italics indicates the additions made by reissue.
This invention relates to general to elapsed time indicators andmore particularly to devices for indicating 1 that is removed and deposited upon the collector 6 is proportional to thc'elapscd timeduring which the current flowed. Inasmuch as the cylinder 2 is transparent, the amount of the electrode that has been thus removed and, deposited-on the collector is indicated and may be easily determined. by'visual reference to the time scale 3 showing I the removed and remaining portions of the electrode within the transparent cylinder 2.
. 'I claim: I 1. 'In' an electrical. unit for measuring and indicating the elapsed time during which a tilted voltage has been applied to said unit, a transparent cylinder, a solid electhe elapsed time of application of voltage, or voltage operated by, such electrical machines as generators, motors, or the like.
E In many such aircraft accessory installations, such as generators," or the like, the-elapsed time offaircraft flight is not a true measure of elapsed time of actualoperation of the generator, itself.
It is therefore an object of my invention to provide a simple'unit for measuring and indicating the actual elapsed time that a voltage has been applied to, or
- generated by, the electrical macchine and across the terminals of my indicating unit, which I place in circuit with the electrical machine. A further object is to provide such an indicating unit that will measure'and indicate the elapsed time through use of aneleetrol-ytic cell through which afixed current is made to tlow, and which indicatrode embedded therein, an electrolytic cell coaxially rigid. with said cylinder, the electrolytic contents of which are engaged'with one end of-said electrode, a
collector embedded in said electrolytic cell, a pair of terminals, one having a lead to the other end of said electrode, and the other terminal having a lead connected to said collector, a resistance in the lead between one-'ter mini and said electrode, said cylinder having a graduated sc'aleto' indicate the amount of said electrode being deposited upon said collector when voltageis applied to said terminals and integrated in units-oi time elapse during which said voltage has been applied to said terminals. v I I 2. In an'electrical unit for measuring andindicating the elapsed time during which a tilted voltage has been applied to said unit, a housing'and a solid electrode tion will be proportional to current, resistance and voltage. I
A'turther object is to provide such a unit that will measureand indicate the elapsed time that a voltage has been applied toitheterminals of the unit bya visual indication of the amount of 'the electroderemoved by the electrolytical action of an electrolytic cell and deposited on-a collector disposed therein. I
with =8 h8 ndother objects in view, the in.
I vention resides in the combination of parts and in' the I details ofconstruction hereinafter setforth'in the follow- 2 ing specification and appended claims, certain embodiments thereof beingillustrated' in the accompanying drawing, whichis a schematic. illustration of the unit constitut- 7 ing my invention, showing the electrode embedded in a clear-plastic graduated time scale, and an electrolytic cell and a collector therein and an electrical circuit conthe unit. I
Referring more particularly to the drawing, I propose to embed a suitable electrode 1 in a transparent cylinder I trodeembedde'd therein, an electrolytic-jail .rigid with i said cylinder, the electrolyt c nteats;- of which are on gaged .withone end of said electrodqa collector em-wj nected to the electrode and collector and the terminals of I 2 provided at 3 with a graduated sealer The electrode l is of uniform size'and shape throughout the cylinder 2.
Rigid with the cylinder 2 is an electrolytic'cell 4, to the inner contents of which is exposed the bare end 5 of the electrode 1. In the clectrolyticcell 4, I propose to mount an anode, or collector 6. The contents of the electrolytic cell may be a solution'lofsilv'er nitrate.
The outer end of the electrode 1 has connected thereto a lead 7 thatextends through a resistance 8 to a terminal 9. To the collector 6 is connected a lead 10 that extends to'-'the' other terminal 11 of the indicating unit. Such a device as described is suitable for indicating purposes when direct current is used. If alternating current is used it will be necessary'to employ a rectifier, such as schematically indicated at 12. Y
applied to said unit, .a houlinsf l tl-"a'solidelectrode em- I A fixed current flowing through the electrolytic cell'4 7 causes the electrode. 1 tap into the solution and be deposited upon the anode, or collector 6. The electrode 1' is of uniform shape and size throughout its length within the cylinder 2 so that the amount or the electrode embedded therein, an electrolytic cell coaxial with said housing, the electrolytic contents of which are engaged with one end 'ot said electrode, a'colle'cror in said cell, a
. pair of terminals one a) whichv is connected to one. end
of the electrode, and the other terminal having a lead connected to said collector, ho sing having a graduated scale to indicate the moment saidelectrode being deposited uponsaid collector when voltage is applied to-said terminals.
3. loan electrical unit for indicating the elapsed time during which a voltage has been applied to said unit,-a transparent-cylinder a" solid elecbedded in said electrolytic cell a pair; of terminals, one
having a lead to the other end of and the other terminal having a leadto said collector, said cylinder having a. graduated scale to indicate the amount of said electrode being depositedupon' said collector when voltage is applied'to said terminals and integrated in units of time elapse during which said voltage has been applied to said terminals. II I I 4. In an electrical unit fun t oning and indicating the .elapsed' time 'during'which a fixed voltage has been bedded therein, an electrolytic-cell coaxially rigid with said housing, the electrolytic contents or which are engaged'with one end of said electrode, 'a 'collector em bedded in said electrolytic cell, a pair of terminals, one
having a lead to the other end of said electrode, and the other terminal having a lcad cnn cted to said collcc tor, a resistance in the lead between one terminal and said electrode for establishing said "fixed voltage, said cylinder having a'graduated scale. tov indicate the-amount of said eleetrode being deposited said collector when voltage is appliedito saidflterminals-and integrated in units of time elapse during aid voltage has been to saiditet'utiuals'. References Cited in ol thispatentp 1 or the originelmt. I
. UNITED 3 at. 24,190 Reissues] July3l, 19 56 l I
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2910647 *||May 31, 1957||Oct 27, 1959||Raytheon Co||Elapsed time indicators|
|US2945398 *||Oct 2, 1957||Jul 19, 1960||Edward J Mullarkey||Weight balancing arrangement|
|US3045178 *||Sep 15, 1958||Jul 17, 1962||United Nuclear Corp||Operating time indicator|
|US3069622 *||Feb 4, 1958||Dec 18, 1962||Bendix Corp||Time indicator|
|US3119754 *||Feb 10, 1961||Jan 28, 1964||Sperry Rand Corp||Elapsed time indicator|