摘要:
A one-piece, relatively thick, resilient corner pad which is used in the packaging of fragile articles. The pad is formed from three identical pieces of resilient material, and assembled so as to form a polyagonal, generally triangular, enrapment in the shape of a truncated, hollow triangular pyramid for the corner of a box or similar container, whereby, when the pad is placed over and around the meeting point of three sides of the container, the container will be spaced and resiliently held within a larger shipping container, without damage from high impact shocks. The unique design cuts costs since only four of such corner pads or cushions are needed -- one each diagonally opposite another. The pads provide excellent dynamic cushioning under heavy static loads. The configuration of each of the three pieces is identical and so designed so that a minimum of raw material is utilized, with no significant waste when the pieces are cut from a sheet. The corner pads may be assembled at the factory into the truncated, hollow, triangular, pyramidal shape, or the individual pieces may be shipped in a more compact form to the customer who can quickly and easily assemble the corner pad on site.
摘要:
A Roots pump comprises a plurality of multi-toothed rotary pumps, each forming a pump stage, and connection channels connecting respective adjacent pump stages. The invention provides that the connection channels are arranged in partitioning walls separating the adjacent pump stages.
摘要:
A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.
摘要:
A fastener system including a threaded fastener having a slot formed in the fastener head. Facets are formed in the slot walls, each facet having an angle of less than ninety degrees with respect to the base of the slot such that the slot has a variable width and at least a portion of the width of the base is greater than the width of the opening of the slot. A driver bit includes a blade configured to be inserted into the slot of the fastener. At least a portion of the free end of the blade has an increased width such that the blade is locked within the slot of the fastener when torque is applied to the driver bit.
摘要:
A MEMS transducer includes a substrate, a membrane layer and a back-plate layer. The membrane layer is supported by the substrate. The back-plate layer is supported by the membrane layer and includes a respective sidewall portion and a respective raised portion. One or more columns, separate from the sidewall portion of the back-plate layer, connect the back-plate layer, the membrane layer and the substrate.
摘要:
A MEMS device comprises a back-plate (7) having an inner portion (7a) and an outer portion (7b), the inner portion (7a) connected to the outer portion (7b) by a sidewall (7c). A raised section or anchor ring (60) is formed in the outer portion (7b) the back-plate, in a region of the back-plate near the inner perimeter of the outer portion. The anchor ring may comprise angled sidewalls. The thickness of the back-plate may be greater than the thickness of the material supporting the anchor ring. Embodiments are also disclosed in which a membrane comprises a raised portion and an outer portion connected by an angled sidewall.
摘要:
A MEMS device comprises a membrane layer and a back-plate layer formed over the membrane layer. The membrane layer comprises an outer portion and an inner portion raised relative to the outer portion and a sidewall for connecting the inner portion and the outer portion. The sidewall is non-orthogonal to the outer portion.
摘要:
Described herein are several embodiments relating to modular irrigation controllers. In many implementations, the irrigation controllers are modular in that various functional components of the irrigation controller are implemented in removable modules that when inserted into position within the controller, expand the capabilities of the controller. Also described are various different types of expansion modules that may be coupled to the modular controller, having as variety of functions and features, as well as related methods of use and configuration of these modules in the controller.
摘要:
A method of making a shingle and the shingle made in accordance with such method are provided, in which a shingle-forming layer of shingle material has a plurality of marks applied thereto prior to or after application of decorative granules to its tab region, and wherein the locations of the marks are sensed by a sensor, that then activates and controls the operation and placement of various shingle-completion steps as a function of the placement of the marks.
摘要:
A canister, especially for two-cycle engines, having both noise reduction and pollutant treatment attributes in a single unit. To effectuate sound reduction the canister muffler has mounted within it several tubes randomly arranged in relation to one another. Thus, an emission stream is forced to frequently change directions, causing a baffling effect and a reduction in noise. Further, these tubes are coated with a catalytic substance to treat the emission stream and thus decrease undesired pollutants. The turbulent flow of the emission stream caused by the tubes also serves to increase the contact with the catalyst. Hence, a single canister is all that is necessary to both silence and treat the emission exhaust stream.