An installation composed of a plurality of machines disposed adjacent a common work space delimited by a boundary surface, each machine being associated with a respective portion of the boundary surface and having a work-performing member movable into and out of the work space through the associated boundary surface portion, and an optical monitoring system composed of a plurality of optical monitoring assemblies each associated with a respective machine. Each assembly includes: a light barrier ...

A sensor system is provided in which a digital absolute value of the particular position of a stationary part (stator) with respect to a part moving relative to it (rotor) is created, which is transferred in serial transmission to an evaluation circuitry, whereby transfer of the serial absolute value is induced each time by an external signal. In order to increase the resolution of the encoder, the change in absolute value is recorded each time in the sensor and finest interpolation is undertake...

A method and apparatus for determining coordinates of unknown ground positions and positions of objects above the earth's surface by the use of code-modulated radio signals in conjunction with stable oscillators. An aircraft transmits a signal which is acquired and tracked by known and unknown ground stations. Range changes are obtained from the measurements of the phase shift between the received signal and an internal reference signal. From the large number of range change measurements obtaine...

According to the present invention, an alignment device for marking and aligning selected positions on a heart's surface is provided. The device includes a handle assembly having upper and lower handle portions which are detachable from one another. Each handle portion is connected to a tissue engaging member which may be secured to the surface of the heart via a vacuum. The tissue engaging members are articulatable with respect to the handle portions, such that movement of the handle portions a...

Structure is provided for varying the relative positions of certain of a series of conveyors in a potato harvesting machine. A vertically shiftable discharge end of a potato-receiving side conveyor in the nature of an elevator is operably connected with a transversely inclined, tiltable trash conveyor such that as the trash conveyor is tilted to maintain it at a predetermined angle of transverse inclination during ascent and descent of the harvester over uneven terrain the discharge end of the e...

A timepiece comprising a control stem manually operable, capable of occupying at least two axial positions, characterized by the fact that it comprises a toothed rotatable member, operable by the stem in a first axial position thereof, and a set of control mechanism intended to execute different operations, comprising each a lever capable of occupying two positions, i.e. a rest position and a working position in which a wheel carried by the lever meshes with the toothing of the rotative member c...

There is provided a printer capable of accurately detecting the print positions of a printing medium and keeping print positions where data are printed constant. A printer according to this invention can accurately detect the print positions of a printing medium and keep positions where data are printed constant by the following operation. More specifically, the printer sets a gap width (PG) for the printing medium and detects the position information of the conveyed printing medium by an optica...

A game device which includes a game board having a playing area on which a plurality of playing positions are arranged in a generally circular pattern. A miniature light-bulb is mounted for rotation beneath the playing area and a plurality of light transmitting spoke-like rod members are mounted beneath the playing area for directing light rays from the bulb along the lengths of the rods outwardly from the bulb. The inner ends of the rods are disposed adjacent the lightbulb and the outer ends of...

Footwear having heel and toe positions reversed so that the wearer leaves tracks indicating a travel direction opposite to the actual direction of travel.

There is disclosed a device, such as a ring, fastener, or the like, comprising a bodily flexible support having plural ornamental positions whereby the same device may be used to create different effects.