| 摘要 |
A Balance Arm with treads or notches on one of its halves with a moveable constant load, for example one or two weights, as the device creates a new method of creating a variable force using a constant load. The scope of application of this device and its method are limitless—it can be applied in all cases where creation of a variable applied force which must change depending on need of the user, with the aid of a constant load, is required. The simplicity of the device and of the method makes it possible to do this smoothly, quickly, reliably, safely, and inexpensively. |
| 主权项 |
1. A Balance Arm for creation of a variable applied force by means of a constant load as a device and a method (hereafter “Device” in the text) includes a Device, on one half of which (B) a constant load moves (for example 1 or 2 balance weights, but this is not obligatory) (hereafter “Load” in the text), which creates a variable applied force (hereafter “Applied force” in the text), onto the other half of the Device (A), to which is attached an object on which it is necessary to exert an applied force (hereafter “Object” in the text). Several alternatives of the Device are possible.
One of the alternatives is when on shoulder (B), along the treads cut on it, move two weights which can be fixed on any segment by simple tightening of the weights against each other. The next alternative is when the Device can be both rested on a support located on the base, and suspended under the base, depending on the conditions of its use. The next alternative is when just one weight of a special design and a notch on a shoulder (B) of the Device is sufficient, instead of a tread. In each case, depending on requirements, it is possible to change the height of fluctuation of shoulder (A). This is achieved by changing the length of the shoulders, by moving the support to one side or another, or by lengthening one or both halves of the Device. This provides a larger or smaller length of one or both of the shoulders of the Device and correspondingly changes the amplitude of fluctuation of shoulder (A). In addition to this, it is possible also to change the height of the support, since this will affect the amplitude of fluctuation of shoulder (A). The method includes the possibility of selecting Devices with various maximum limits of the specified applied force reached, initially, by selection of a weight of constant load value and/or change of length of shoulder (A) and/or (B). Thus, if it is necessary to show a small applied force, this will be a Device with short shoulders (A) and (B) and small weights, and vice versa. The next alternative is when the Device rests on a support at one end, for example from shoulder (A), and on the same half a slider moves, to which a connecting rod leading to the Object fastens. The slider allows moving the fastening of a connecting rod along shoulder (A) and correspondingly changing the amplitude of motion of the Object. The next alternative is when the Device rests on a support at one end, for example from shoulder (A), and a connecting rod leading to the Object is fastened to the opposite end of the Device, for example to shoulder (B). And the Load moves along the entire length of the Device, from shoulder (A) to (B). The next alternative is when shoulder (A) of the Device is turned 90 degrees upwards from the horizontal position, and this allows the Device to create a pulling force; and contrarily, when turned 90 degrees downwards from the horizontal position, to create a pushing force. In the horizontal position of the Device, an elevating force is created. |
