Abstract: Closed busbar system for three-phase low voltage distribution, comprising phase bars that extend lengthways and transverse branch bars, one of which is respectively electrically connected to an associated phase bar. The phase bars are maintained in an inserted manner in a socket of an insulating housing for reducing the cross-section or increasing the power in such a manner that a cooling channel associated with each phase track is formed between the rear side of the phase tracks and the base inner side of the socket.

Abstract: Closed busbar system for three-phase low voltage distribution, comprising phase bars that extend lengthways and transverse branch bars, one of which is respectively electrically connected to an associated phase bar. The phase bars are maintained in an inserted manner in a socket of an insulating housing for reducing the cross-section or increasing the power in such a manner that a cooling channel associated with each phase track is formed between the rear side of the phase tracks and the base inner side of the socket.

Abstract: The filter device contains a stack of filter rings (2), preferably consisting of plastic. Each filter ring (2) contains a number of cams (3) which are distributed evenly over the face, and diametrically opposed recesses. When the cams (3) and the recesses of adjacent filter rings (2) lie flush on top each other, a gap (7) is formed between them. The gap openings of the filter element (8), which consists of several filter rings (2) layered on top of each other, can be cleaned efficiently by means of a back-flow device comprising nozzle bodies (70). The characteristics of the filter can be altered by selecting a filter gap with different filter rings and different filter stack heights.

Abstract: The invention relates to a device (50) for sterilizing a medium preferably water. The device has a conduit of pipes (51) through which the medium that is to be purified is passed. At least one removable UV lamp producing ultraviolet radiation is fitted almost concentrically in the conduit. The conduit (51) is U-shaped and has two separate adjacent pipe sections (54). Two sleeves (53), (52) are connected to the inlet and outlet sides of each of these pipe sections, respectively. One of the sleeves (53) forms a channel from one pipe section (54) and the other sleeve (52) forms an inlet and outlet for the medium. This latter sleeve has two flange sections (62), each receiving a UV lamp (55) that extends into a separate one of the pipe sections (54). This results in a sterilizing device which is inexpensive to produce and easy to dissemble for cleaning.

Abstract: To permit rapid assembly and disassembly of the water cycle so that, when disassembled, it can be stored or transported in minimum space. The cycle, which has at least three flotation bodies (2a, 2b, 2c), which are elongated or torpedo shaped, is formed of tubular frame elements which are coupled together by push-in connectors with spring-loaded pin locks (9, 30, 30', 33, 41) so that individual frame elements (6,7,8; 12,13,14; 24,25) of the cycle can be disassembled into the frame elements, or, selectively, snapped together. The flotation bodies are preferably inflatable and formed with a keel. A pedal and crank arrangement is coupled to a transmission which can drive a propeller or, directly via a chain, a paddle wheel.

Abstract: To reduce the distribution time of bowling pins being fed horizontally along transport paths, first and central transport systems (41, 42) are located in a median portion of an elongated frame, with first and second connecting transport systems (43, 47), diverging from the central transport system, transport the bowling pins to peripheral transport systems (68, 69) located parallel and on either side of the first and second central transport systems. Bowling pins are distributed, alternately, to the first and second central transport system to be transported past pin receiving pockets to receive pins, provided the pockets are empty. The distribution apparatus is simple and formed witha Y-shaped distribution rocker to alternately cover or free pin supply chutes (5, 6) in alignment with the first and second transport systems, respectively.

Abstract: In bowling establishments, the bowling balls being returned on a ball return race must be lifted to a higher level in the vicinity of the player's position. This is effected by means of a belt drive, which is seated on a pivotable ball lift mechanism (6). If a ball (3) is not engaged by the belt (9), a feeler causes the arm (12) of the pivotable mechanism (6) to be lowered, as a result of which the ball is engaged by the belt (9) and is transported obliquely upward along the return race (2). As a result of this upward movement of the ball (3), the pivotable ball lift mechanism (6) is pivoted in the direction of the arrow A and the latch arm (22) again locks into place behind the latch (32), so that the pivotable ball lift mechanism (6) subsequently assumes its normal position. The operational reliability of the apparatus is thereby increased, because even balls (3) rolling quite closely to one another are lifted with assurance to the proper level.

Abstract: To improve the structure described in my earlier U.S. Pat. No. 3,954,264, d permit release of the hook (8) upon excessive force being applied by a cross-pin (21) on the hook if an inadvertent or carelessly thrown bowling ball applied a force (G) to the bowling pin wiper blade (35), the hook support arm (4, 5) is formed in two arm portions (4, 5) with a buckle joint (13) therebetween spring loaded to maintain a slightly out-of-line position of the support arm, but permitting buckling if a downward force on pin 21 (FIG. 1) pushes upwardly the camming roller (7) at the lower end of the lower arm portion (5) against a force in spring (32) and thus prevent damage to the suspension arm (1), the support arm (4, 5) and the other components of the mechanism.

Abstract: To permit individual retensioning and readjustment of cable length, to compensate for stretch of cables (2) attached to the heads of bowling pins (1), each cable (2) is looped about an individual associated storage drum (6), which is secured to an individual rocker plate (9), held in a first predetermined or rest position by a spring (8). The storage drum is prevented from rotation in a cable pay-out direction by a ratchet (22, 28), but can be rotated in cable pick-up direction by an externally controllable cable tensioning drive. If the cable tension applied between the head of the pin and the storage drum exceeds the force of the restoring spring (8) applied to the rocker plate, the rocker plate will pivot, thus permitting engagement of the latch (28) of the ratchet with an electromagnetically positionable engagement element (10), thus permitting rotation of the storage drum in the cable pay-out direction (D).

Abstract: For releasably attaching electrical conductors 11 or small tubes, the invion provides a U-shaped clip made of a resilient plastics material, which can be plugged into a bore 12 in a support panel 8. The electrical conductors 11, or the like, are held between the two shanks or legs 3 and the crosspiece 4 which connects the latter, and are pressed against the panel 8. In the inserted state, the grooves 6 provided on the shanks 3 engage in the edge of the bore 12. To release the clip, the two shanks 3 are pressed together by finger pressure. This makes it particularly simple to attach the conductors or tubes to the panel.

Abstract: To permit conjoint tilting movement of rifle targets which are slideable on track between a target position and an inspection position to inspect hits on the target, a guide track system is provided to guide movement of the target from the target area towards the firing area; a fixed drive gear is located at the target area to provide about ninety degree rotary movement upon engagement with the drive gear, and coupling apparatus associated with the targets conjointly coupling a plurality of targets to the drive gear when the targets are moved to the target position to swing the targets into a position presenting the targets to the rifleman, and permit rotating the targets by about ninety degrees for subsequent movement towards the firing position to permit inspection of hits by the rifleman.

Abstract: Two vertically extending endless chains have bowling pin holders attached ereto to move the holders to a discharge region. The pin holders are pivotably supported on the chains and each of the holders has at least one projecting arm rigidly connected thereto. The arm is guided in a guide track to so position the bowling pin holders on the chains, when below the discharge region, that bowling pins are retained, the guide track deflecting the arm to permit the holder to pivot and release the pin thereon when at the discharge position.

Abstract: A frame is vertically movable, the frame being arranged to carry out a full troke to pick up still standing bowling pins and a partial stroke to place pins on the surface of a bowling alley; to control the length of the stroke, and provide for soft stopping of the frame at the terminal end of its stroke, a stroke control and limit lever is selectively positionable in interfering relation with respect to the downward movement of the frame. The interference position of the control and limit lever is externally controllable, for example by a electromagnet or solenoid, the lever being further connected to a hydraulic dashpot. When in interfering position, the frame, upon its downward stroke, impinges on the control and limit lever which can deflect, the dashpot gradually braking the downward movement until the deflection limit of the limit lever is reached, for example at the end position of the dashpot.

Abstract: To accept the kinetic energy of moving bowling balls and stop the bowling lls, and transport them from the bowling pin pit to a return mechanism, one, and preferably two vertically staggered bumpers are provided located transversely across the bowling pit, the bumpers being movable and having a movable mass which corresponds essentially to the mass of the bowling balls; to return the bowling balls, an endless rubber belt or cable is moved transversely to the bowling pin pit, for example secured to the lower one of the bumper assemblies, to engage the bowling ball when it has impinged the bumper and is just in front thereof to move it transversely out of the way of the bowling alley pit.

Abstract: The light beam projector and the directive light receiver of a light barr intrusion detector are mounted side by side on a common mounting body which is angularly adjustable in a fixed casing, so as to direct the projected light for maximum reflection to the receiver by a remote mirror. A light emitting diode is provided as a visible indicator on or near the casing or the mounting and responds to the photosensitive element of the receiver through an intermediate amplifier, so that its brightness enables the effectiveness of the directional adjustment to be easily observed.

Abstract: To permit installation of a bowling ball return chute between a pair of ays, and prevent interference of bowling balls admitted from either adjacent alley to the chute, the alleys are formed with openings which are blocked by doors, the doors each including an interlock mechanism mutually engageable with the interlock mechanism of the other so that, upon opening of one door due to pressure of a ball thereagainst, the other door is locked and admission of a ball from the other alley is prevented. The ball is then moved on a rocker which deflects due to the weight of the ball, the deflecting movement being re-transmitted to the previously opened door to close the door, so that a ball from the other alley can then be admitted, the doors being easily opened by impingement of the balls thereagainst.

Abstract: A support which can tip to release a bowling pin therefrom and which may be part of a transport mechanism, holds bowling pins in essentially horizontal position. A pair of sensing levers is arranged near the discharge position of the pins from the support, the sensing levers being horizontally spaced so that one lever will engage the neck or head portion of the pin, whereas the other lever will engage the bulged body portion thereof. The levers are interlocked in such a manner that the specific respective lever which senses presence of the head or neck portion therebeneath will remain in locked position during release movement of the support, whereas the other lever is free to release the pin, so that the pin will be restrained at the head or neck portion, regardless of its horizontal alignment, and always be tipped away from the support with the body portion first.

Abstract: To provide for rapid drop of the bowling pin sweeper for removal of fallen owling pins, without jamming of pins between the sweeper arm, an electromagnetic release such as a magnet operating a sear, triggered, for example, by movement of a bowling ball towards the pins releases the sweeper arm to drop, by its own weight (braked at the end of the fall by a dash pot) prior to initiation of sweeping operation, the remainder of the sweeping cycle being permitted to continue at normal, sweeping speed.