Patent Issued for Device For Establishing Or Releasing A Coupling (USPTO 10,345,079)

Engineering Business Daily |

2019 JUL 23 (NewsRx) -- By a News Reporter-Staff News Editor at Engineering Business Daily -- From Alexandria, Virginia, NewsRx journalists report that a patent by the inventor Geller, Reiner (Wetzlar, DE), filed on , was published online on .

The patent’s assignee for patent number 10,345,079 is Leica Camera AG (Wetzlar, Germany).

News editors obtained the following quote from the background information supplied by the inventors: “The invention relates to a device for establishing or releasing a coupling between an adjustment ring, which can be rotated on a base element by way of a detent mechanism and is provided with an adjustment shaft for optical elements, and a cylindrical index ring, which is inserted between the adjustment ring and the base element so as to rotate in relation to an index mark provided on the base element.

“On telescopic sights, it is known to vary the elevation of the aiming point on a reticle provided in the optical path of the telescopic sight by way of an adjustment ring that can be latched onto the outside of the telescopic sight on a base element. The elevation is dependent upon the target distance and the ammunition fired at the aiming point. In the case of a telescopic sight mounted on a barrel, the elevation is thus typically set on the adjustment ring by a person skilled in the art for a standardized target distance and customarily used ammunition, and is zeroed with the aid of an index ring coupled to the adjustment ring in relation to an index mark provided on the base element.

“The detent positions of the adjustment ring correspond to a standardized, incrementally variable target distance. The individual detent positions can be felt and heard by a clicking sound, so that the shooter is also able to discern the changed target distance even in the dark.

“The aforementioned index ring is coupled to the adjustment ring, so that the change in the detent positions can also be read optically via the change in the setting of the index ring in relation to the index mark, and the adjustment ring can be returned to the zeroed starting position when the use of the firearm has been completed.

“The elevation of the reticle must likewise be adapted when a change in the ammunition type occurs. Via the typical trajectory of the ammunition type, this adaptation likewise affects the target distance which was set by way of the adjustment ring and to which the zero position of the index ring must be adapted when the different ammunition type continues to be used.

“It is known to effectuate the coupling between the adjustment ring and the index ring by way of mutual interlocking. The interlocking mechanism can be released by manually pulling the adjustment ring or with the aid of a tool, and can be re-established in a different relative position. Due to the engagement in the teeth, only discrete changes in the relative position are possible, which influence the accuracy of the setting of the reticle to the standardized target distance.

“It is therefore the object of the invention to be able to set, in particular continuously, the coupling between the adjustment ring and the index ring in a device of the type mentioned above, without using a special tool.”

As a supplement to the background information on this patent, NewsRx correspondents also obtained the inventor’s summary information for this patent: “According to the invention, this object is achieved by the features described in this specification and in the claims.

“As an essential measure, the index ring is, for this purpose, provided on the edge pointing toward the adjustment ring with an inwardly directed ring surface, and a spring pressure-loaded friction element is inserted between the adjustment ring and the ring surface. The spring pressure can be removed by way of a pressure element inserted into the top face of the adjustment ring. After the friction pressure has been removed, the index ring can be continuously rotated in relation to the adjustment ring. As soon as the pressure element is no longer actuated, the coupling is automatically re-established under spring pressure.

“The pressure element can be rigidly connected to a pressure plate, which counteracts a spring pressure exerted on the ring surface at the index ring. The pressure element, however, can also be designed as a two-arm lever mechanism, having one lever arm seated against the friction element under spring pressure and having the other lever arm pressed into the adjustment ring against the spring pressure.”

The claims supplied by the inventors are:

“What is claimed is:

“1. A device that establishes or releases a coupling, comprising: a base element having an index mark provided thereon; a detent mechanism; an adjustment ring, which is rotatable on the base element, the adjustment ring being secured in place via the detent mechanism and having an adjustment shaft for optical elements; a cylindrical index ring, which is inserted between the adjustment ring and the base element so as to rotate in relation to the index mark; an inwardly directed ring surface integrally formed on an edge of the cylindrical index ring pointing toward the adjustment ring; at least one o-ring that is inserted between the adjustment ring and the inwardly directed ring surface; and a pressure element that is inserted into a top face of the adjustment ring, wherein a spring pressure is removable via the pressure element.

“2. The device of claim 1, further comprising at least one preloaded spring element used to generate the spring pressure between the inwardly directed ring surface and the base element; wherein the pressure element is rigidly connected to a pressure plate, the pressure plate engaging in a space between the spring element and the inwardly directed ring surface, so as to remove the spring pressure.

“3. The device of claim 2, further comprising a separate preloaded spring element inserted between the pressure element and the adjustment shaft or the base element.

“4. The device of claim 2, wherein the pressure element is a two-arm lever mechanism mounted in the adjustment ring, having one lever arm seated against the at least one o-ring under preloaded spring pressure, and having another lever arm that can be pressed into the adjustment ring so as to remove the spring pressure acting on the at least one o-ring.

“5. The device of claim 4, wherein the one lever arm is shaped as a planar segment of a circle or as a full circle.

“6. A telescopic sight comprising: an optical element; an adjustment ring; a cylindrical index ring; a base element; an adjustment shaft; a detent mechanism; at least one o-ring; a first pressure element; and a second pressure element; wherein the adjustment ring is rotatable on the base element and secured in place via the detent mechanism, the cylindrical index ring is inserted between the adjustment ring and the base element so as to rotate in relation to an index mark provided on the base element, the adjustment shaft is connected to the adjustment ring and is used to adjust, through the base element, the optical element, an inwardly directed ring surface is integrally formed on an edge of the index ring pointing toward the adjustment ring, the at least one o-ring is subject to pressure generated by the first pressure element and is inserted between the adjustment ring and the inwardly directed ring surface, and the pressure applied via the first pressure element is removable by way of the second pressure element inserted into a top face of the adjustment ring.

“7. The telescopic sight of claim 6, wherein the first pressure element is a spring, and the second pressure element is a spring.”

For additional information on this patent, see: Geller, Reiner. Device For Establishing Or Releasing A Coupling. U.S. Patent Number 10,345,079, filed , and published online on . Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=10,345,079.PN.&OS=PN/10,345,079RS=PN/10,345,079

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