A hollow bolt (10) contains first and second electrical contact elements (13, 16) which are moved apart when the bolt is subjected to a predetermined tensile lead. A carrier (14) for a first of the contact elements contains an inductor (18) connected electrically between the contact elements, the condition of the contact elements is ascertained by inductive coupling of test apparatus with the inductor.

Presented is an indicating register that serves for indicating the content of magazine or the like, and having a simple and space-saving construction. Several pivotably-journaled pages each have a page appendage projecting from their pivot axis and offset relative to one another in the axial direction. A carrier unit is movable transversely to the pivot axes of the pages by means of a drive, and has several followers that are likewise axially offset to one another and additionally have a constan...

When a golfer strikes a ball on a tee connected to a latch release for a pivotally mounted arm, the arm is accelerated by a preloaded torsion spring from an inactive (vertical) position to an indicating (horizontal) position in which an opening in the arm is disposed on the same line of sight from the golfer as the tee. An endless tape, which is supported by the arm, has a number appearing in the opening for a short, selected period of time after the arm reaches its indicating position. The open...

In an indicating instrument, a plurality of measuring elements (2,3) are fastened in axially displaceable manner on a base plate (1) and held by compression springs (4,5) against a front plate (6) of a housing (7). The measuring elements (2,3) are provided on their rear with contact pins (9,10,11) which pass through a base plate (1) of the indicating instrument and, behind it, engage, in each case, in a plug-type receiver (12,13,14) of a circuit board (15).

An altimeter has a rotatably-mounted index that is driven to rotate through one complete revolution around a scale for each change of 1,000 feet in altitude sensed by two evacuated manometric capsules the number of revolutions of the index is indicated by numerical markings visible through an arcuate window which breaks into the scale against a `zero` arrowhead at the top-center of the scale. The markings are distributed around the opaque circumferential-margin of a transparent disc that is moun...

An indicating device includes an indicator housing member having a first circumferential wall defining an interior surface and a substantially circumferential cavity having a longitudinal axis. An engagement member is formed on the interior surface and a viewing window is formed through the first wall. An indicator member has a second circumferential wall with an exterior surface having dosage indicia and a bottom rim. The indicator member is rotatably mounted within the indicator housing member...

A device is described for indicating the number of doses dispensed from an aerosol container (2, 102) having an outlet valve member (4, 104) movable relative to the body of the container to dispense its contents in measured doses. Relative movement between the aerosol container body and the outlet member are detected by a ratchet wheel (14, 114) and ratchet driving member (11A, 111) which move with the body and outlet member respectively or vice versa. The ratchet wheel may in turn drive an indi...

A support (2) which serves for fastening a pointer (1) on a pointer shaft has, towards the top, a holding part (12) which is developed as an expansion rivet. The pointer (1) has a central passage (13) through which the holding part (12) engages. A cap (3) is provided with an expansion pin (14) which is adapted to be pushed from above into the holding part (12) when the cap (3) is mounted. In this way, the expansion rivet is expanded and the pointer (1) is thereby attached firmly to the support (...

An indicating light for use in a vehicle or the like having a main housing with an LED unit mounted therein. The LED unit has at least a pair of LED lights. The contact of one of the LEDs is coupled to a contact extending out of the housing and the contact of the other LED is coupled to one lead of a resistor, the other lead being coupled to a spring clip contact having one leg mounted in the housing and the other leg extending out of the housing providing both a ground and a retaining member fo...

An indicating system includes first and second voltage comparators, first and second output circuits which are respectively supplied with output signals of the first and second voltage comparators, and first and second indicating elements which are connected to a common output terminal of the first and second output circuits. A first input terminal of the first voltage comparator is supplied with a first reference voltage, and a second input terminal thereof is supplied with a control signal. A ...