Abstract: The electronic load cell is for measuring force using a force sensor within and has reduced susceptibility to shock or impact in the direction of its measurement vector. The load cell device includes a load cell structure formed of a suitable solid and including vertically spaced apart, generally parallel horizontal elements integrally formed with longitudinally spaced apart, generally parallel vertical elements with flexible members. Flexures interconnect each horizontal element with the vertical elements. A force sensor is connected between the horizontal element connecting the two flexures on the first side of the parallelogram and a spring connected to the second parallel member.

Abstract: A seat weight measuring apparatus measures a seat weight including a weight of a passenger sitting on an automotive seat. The seat weight measuring apparatus is formed of seat connecting mechanisms with arms for connecting the seat to seat fixing portions located on a car body, load sensor mechanisms for receiving and detecting the seat weight applied between the car body and the seat, and displacement restriction mechanisms for restricting displacement of the seat relative to the seat fixing portions within a predetermined range. Each arm of the seat connecting mechanisms has a seat side end and a car body side end, and one or both ends is pivotally supported on pivots. The characteristic of the weight applied to the load sensor is simplified to easily and accurately measure the weight of the passenger on the seat.

Abstract: An overload protection device for a precision balance includes a measuring cell having a short travel distance, a parallel guide unit connected to a load receiving unit, and an auxiliary parallel guide unit whose guide members are connected to the load receiving unit, on the one hand, and to a weighing dish carrier member, on the other hand, wherein the guide members of the auxiliary parallel guide unit are pretensioned by at least one spring and form a rigid unit with the load receiving unit within the loading range of the balance. The auxiliary parallel guide unit includes an upper guide member and a lower guide member, wherein the two ends of the guide members of the auxiliary parallel guide unit on the side of the weighing dish are connected to each other by at least one guide bolt fastened to the upper guide member and the lower guide member. The guide bolt extends with play through a support plate which is fixedly connected to the load receiving unit of the measuring cell.

Abstract: A balance with a weighing system protected against overloading includes a load receiving member and a weighing dish placed on the load receiving member. The weighing dish rests on dampening elements which are mounted at ends of two U-shaped levers which are supported in a central yoke. The yoke includes abutments which hold the two levers in a horizontal position in an articulated manner. When a load which is within the weighing range is applied to the weighing dish, the two levers and the yoke form a rigid unit. If an excess load is placed on the weighing dish, either dynamically or statically, the two levers are pivoted and tension a stack of springs mounted in the abutments. In addition to dampening by the pivoting of the two levers and tensioning of the stack of springs, additional dampening is effected by dampening elements between the lever ends and the weighing dish.

Abstract: The support arm (29) for the load-receiving pan (28) of an electronic weighing apparatus (2) is resiliently suspended from the vertically arranged load receiving member (15), thereby to isolate the load receiving member from deleterious forces applied to the weighing pan. To this end, one end of the support arm is suspended by a pair of parallel spaced leaf springs (31,33) from the lower end of the load receiving member. Opposed portions at the upper ends of the leaf springs contain relatively outwardly projecting horizontal U-shaped loop portions (43), thereby to afford resilient displacement of the arm in various directions relative to the load receiving member.

Abstract: A weighing scale is disclosed with high accuracy and speed and minimal response to vibrations having a balanced mass construction and including a variable capacitance load cell coupled to the load side of the scale and having a spring rate substantially greater than the spring rate of the remaining scale components.

Abstract: Weighing apparatus of the short-stroke type is disclosed including a resilient parallel guidance arrangement (3) connecting a load-receiving member (2) for vertical movement relative to a console member (1), characterized by the provision of a pivotally movable lever (14) connected between the console and load-receiving members and including a resilient arm (18) for transmitting to the measuring device--for example, a vibratory string (23)--a force corresponding with the load applied to the load-receiving member. A stop device (20) is provided for limiting the extent of pivotal movement of the lever, the force introduced into the parallel guidance arrangement being only a fraction of the load to be measured, whereby the deleterious influences disturbing the measurement force are eliminated, whereby a relatively simple and inexpensive parallel guidance arrangement of less expensive materials may be achieved.

Abstract: A flexure weighing system comprising a split-beam assembly consisting of two beams centrally connected by a flexure linkage system. The split-beam assembly is also connected to a frame and to mounting studs which connect the outer, load-bearing ends of the beams to a weighing platform. One of the beams is connected to a weight sensor which produces an electrical signal indicative of the movement of the beam to which it is connected and therefore of the weight on the weighing platform which causes that movement. Preferably, flexures are used at all the key pivot points in the system.

Abstract: In a weighing machine a flexure bar is attached as a cantilever to a beam. The force to be measured is applied to the cantilever end of the flexure bar by a weighing lever. In order to protect the flexure bar against overloading the beam is mounted to be pivotable and is held by a spring force acting counter to the direction of action of the force to be measured against a first fixed stop. The spring force is chosen such that said beam moves out of contact with the first stop when an overload is applied to the weighing lever. In addition, a second fixed stop is provided to restrict the pivotal movement of the weighing lever and thus prevent the transmission of further force into the flexure bar.

Abstract: An improved high speed egg grading system wherein a pair of opposed lifting bars disposed on rotating rings transfer eggs over a plurality of weighing stations, and a conveyor belt is provided for removing graded eggs spaced two abreast. An improved drive is provided for the bars which insures gentle pick-up and set down of the eggs at weighing stations where scales incorporating damping means to reduce settling out time are located.

Abstract: An improved weight sensing apparatus wherein the output signal of a transducer and, therefore, the reading on a weight meter is rendered accurate regardless of the location of the load. The invention includes providing a set of stabilizing flexures forming a parallelogram with the flexures interconnecting a fixed base and a movable outrider which is adapted to receive the load. A beam balance lever has one end secured to the outrider, and the other end is mass balanced and is built into the parallelogram so that the reduced section of the transducer which interconnects the beam and the fixed base is in alignment with either the top or bottom flexures of the parallelogram. The load end of the lever is secured to the outrider by means of a vertical flexure, loaded in tension, so as to carry the force created by the load into the lever from the outrider; and, in this fashion, avoids rendering the device sensitive to the precise placement of the load on the outrider.

Abstract: An auxiliary dynamic compensation device for a gravimetric dispenser, comprises a piston suspended by a pliant and non-extensible connection which is adapted for attachment to the beam or equivalent weighing member of the weighing device of the dispenser and is vertically movable with limited lateral clearance in a vessel containing a liquid in which the piston does not float. A bypass passage interconnects the interior of the vessel below the piston and the interior of the vessel above the piston and contains a non-return valve arranged so as to close the said passage if the piston begins to descend in the vessel and to open it if the piston begins to rise, whereby the piston can follow upward movements of the beam, but those downward movements thereof which are more rapid than those of the piston, are accompanied by a variation in the load applied by the pliant connection due to the retardation of the descent of the piston.