3results about How to "Reduced external dimensions" patented technology

This utility model discloses a convenient trolley case, including a first case body and a second case body. One side of the first case body and one side of the second case body are fitted together and hinged. Both the first and second case bodies are telescopic. Mounting holes are respectively provided on opposite sides of the first and second case bodies, and telescopic rods are fixedly installed in these holes. The telescopic rods are driven by a drive assembly, which has two sets of components respectively located within the inner cavities of the first and second case bodies. The first case body can fold 180° relative to the second case body. This utility model allows for adjustment of the sum of its three dimensions by folding the first and second case bodies, adapting to various scenarios without changing the volume of the contents.

The object of the invention is, inter alia, a heat exchanger (1) for exchanging heat between a first fluid and at least a second fluid, the heat exchanger (1) comprising: a plurality of flat plates (10) stacked together to form a core (100) for circulating the first fluid in the core (100), the core (100) comprises a first passage (100A), referred to as an inlet passage, at least one second section (100B), referred to as an intermediate passage, in which the intermediate passage is directly fluidly connected to the inlet passage, and in which the intermediate passage is fluidly connected to the inlet passage. The first section (100A) comprises at least a first channel (111A) adapted to dispense the first fluid in the first section (100A), a second channel (111B) at least partially fluidly connecting the second section (100B) and the first section (100A), and at least a third channel (111C) at least fluidly connected to the second section (100B), the second channel (111B) further comprises a first conduit (102A) and a second conduit (102B), the conduits (102A, 102B) extending in the stacking direction of the plates (10), where the second conduit (102B) comprises a flow restrictor (105) configured to at least partially block an intended first fluid flow between the first section (100A) and the second section (100B).

The invention relates to an acceleration sensor having at least one piezoelectric element, at least one test mass, and a base body; the acceleration sensor is arranged in an orthogonal coordinate system having three axes, one of the three axes being a vertical axis; the base body has tangential sides and normal sides, the tangential sides being arranged tangentially with respect to the vertical axis, the normal sides being arranged normally with respect to the vertical axis; the acceleration sensor has exactly three piezoelectric elements and exactly three test masses; exactly one piezoelectric element is fastened on each of the three tangential sides; exactly one test mass is fastened on each of the three piezoelectric elements and exerts a shear force on the piezoelectric element that is proportional to the acceleration upon acceleration; each of the three piezoelectric elements has a high sensitivity to a shear force along a main tangential axis exerted by the test mass fastened thereto, the main tangential axis being a different one of the three axes for each of the three piezoelectric elements.