33 results about "Transverse ridging" patented technology

A simulated stringed musical instrument practice device having integrally formed longitudinal ridges simulating strings is herein disclosed. The present invention generally comprises an elongated section of material that is similar in shape to the neck of a conventional stringed instrument. The elongated section has a flat surface fashioned thereon having transverse ridges simulating frets as well as longitudinal ridges integrally attached thereto simulating strings. The frets are spaced progressively longer distances apart in order to more accurately simulate the fret board of a conventional stringed instrument. Optionally, the present invention may also provide utility as a computer keyboard wrist rest. Non-slip footings are provided for attachment to the flat surface in order to provide for secure placement adjacent the keyboard of a computer in a manner similar to conventional wrist rests. A combination simulated stringed instrument and computer keyboard wrist rest having a multi-layered elongated section which deforms to the shape of a user's wrist while used as a keyboard wrist rest is also disclosed.

A package for ready-prepared foods which comprises a dish adapted to contain food, said dish containing a rim flange, and a lid, heat-sealed to the rim flange, wherein the rim flange is provided with a plurality of ridges which extend around substantially the entire periphery of the dish defining a space between said ridges, said space being divided into a plurality of transverse ridges which extend across the space forming a plurality of sealing compartments which substantially eliminate sealing leakage.

A feeding mouthpiece has a body and a tube. The body is hollow, a resilient material and has two ends, a teat and a seal. The teat is formed on one end of the body, has an opening and corresponds to a mouth of young. The seal is formed on the other end of the body and has a sealing surface. The tube is formed through and protrudes from the sealing surface of the seal, is tapered to a transverse ridge and has an outer surface, a proximal end, two gables and an air valve. The air valve is a slit and may be formed along the transverse ridge or longitudinally on the outer surface of the tube. When the feeding mouthpiece is mounted with a bottle, the air valve prevents leakage and is easily cleaned without tearing or breaking the feeding mouthpiece.

A bicondylar knee resurfacing prosthesis for limited knee resurfacing procedure inserted through a direct mini lateral approach, which avoid disruption of the extensor mechanism or damage to the quadriceps tendon. The inventive device includes a reduced femoral component, a metallic tibial tray and a polyethylene tibial insert.

A metallic reduced femoral component having a thin polished convex articular surface in a form of two condyles, medial and lateral, connected with an intercondylar bridge. The concave surface having a metallic dovetail transverse ridge across the entire width of the femoral component precisely positioned at the level of maximum weight bearing contact in full extension. The concave surface provides fine asperities and voids to allow bone ingrowth or can be cemented using conventional methyl methacrylate bone cement.

The tibial tray provides a dovetail recess along the superior surface and transversely across its entire width, which will slidingly receive the polyethylene tibial insert. The bottom surface of the metallic tibial tray in contact with the tibial plateau has a dovetail ridge, which extends transversely along the entire width of the tibial component securing the tibial component to the resected tibial plateau.

The tibial insert is made of polyethylene and has the same shape and size of the tibial metallic tray. It provides a dovetail that matches the one on the tibial tray so it can be easily driven in and locked in place. The surface of the tray provides two shallow condylar grooves that conformably match the condylar convex surfaces of the metallic femoral component.

A strap for a mechanical closure device is disclosed. The strap includes a wire disposed along a longitudinal axis of the strap. The wire maintains the strap in a desired geometry that is different from a previous geometry of the strap. In other embodiments, a wire-core strap can include transverse ridges, holes, or other types of grooves or apertures.

A dental brace includes a plurality of pairs of bracket and sliding cover. The bracket includes an attaching base attached to a tooth, a support extending upward obliquely from the attaching base, a top jaw, a transverse groove in the support, two side inclined grooved rails on the support, and a projecting abutment member. On a recessed, inclined surface of the support there are provided a transverse ridge and a shoulder below the ridge. The sliding cover comprises a latch extending downward from an upper end. The groove is open when the latch is stopped by the shoulder so as to permit an arch wire to dispose in the grooves. The groove is concealed by the sliding cover when the latch is urged against an inclined surface of the ridge so as to position the arch wire in the grooves.

The invention relates to a method for reducing water and soil loss of sloping tobacco field, and belongs to the technical field of tobacco planting. The method for reducing the water and soil loss ofthe sloping tobacco field comprises the following steps that 1, ridges are formed in the contour line extending direction of a slope, and the ridges are covered with films; 2, alfalfa is planted in furrows, and tobacco is planted on the tops of the ridges; 3, after the tobacco is harvested, the alfalfa in the furrows is turned over and returned to the field. According to the method for reducing the water and soil loss of the sloping tobacco field, the way of transverse ridging is adopted, the water and soil loss is sufficiently reduced, the ridges are covered with the films, the alfalfa is planted in the furrows, mulching film and alfalfa binary covering is achieved, and the immobilization effect on the water and soil is further enhanced.

The invention discloses a hollow drainage ridge for a flat dam strip-field. The hollow drainage ridge is a ridge which is built by casting a building material and of which the inner cavity is provided with a drainage sewer; a river of which the total capacity height is lower than a bottom line of a plough layer of a field along a line and the water at the tail is drained into a drop section through the underside of a transverse ridge is designed; drain holes of fields along the line are formed on two side walls of the ridge near a crossed field corner above the total capacity height; and the ridge crossed position with the drain hole is provided with a pit and cover plate, which exceeds a vicinity range of the tail drain hole of the ridge crossed position. The invention has the advantage that: the hollow drainage ridge has enough drop, quickly drains irrigation water and rainwater timely, reduces the flood discharge pressure of irrigation ditches to prevent rainstorm from flooding the field to avoid flooding crops, can reduce the loss of soil nutrients, effectively solves a problem of wet damage in the field timely to facilitate soil permeability, creates high yield conditions for the crops, does not influence irrigation from one field to another, can avoid a dispute of field flooding due to drainage, prevents drained water from being blocked by irrigation channel water or irrigating the field by mistake, has two purposes of the drainage sewer and an aisle ridge, drains water in a labor-saving and time-saving mode, and avoids the scouring of rainstorm and weed coverage of the field.

The present invention relates to a microtiller which can be walked in length direction and breadth direction. In the concrete, it is a small-type walking tractor for planting vegetables. It is characterized by that it has a lengthwise walking wheel which can be walked along longitudinal ridge and a breadthwise walking wheel which can be walked along transverse ridge, when the ridge tillage is made, it has no need of making a turn. Said microtiller can be operated on the ridged field surface, over the crops a proper gap can be remained, so that it can greatly raise mechanization level.

A rotary lift table. The rotary lift table as claimed in the invention is equipped with a rotary lift table board for bearing flat objects, said rotary lift table board having a bearing surface which is pulvinated towards the top with a transverse ridge region whose longitudinal extension runs at least approximately at a right angle to a discharge direction. The flat objects lying on top of one another in a stack arrangement are adapted to the arched bearing surface and give the stack improved stability thanks to its profiling.

The invention provides warm-keeping clothes with transverse ridges and a manufacture method and relates to the clothing field. A main heat-dissipation way of a plurality of layers of close-contact cloth is heat conduction, and heat is dissipated fast. Cotton-padded clothes and down jackets are swollen due to fluff. The warm-keeping clothes with the transverse ridges can achieve the warm-keeping purpose and avoid swollen situations. According to the technical scheme, the cloth is folded to form a transverse folding line every 5-20mm interval along the longitudinal direction, a rubber string bar or a soft plastic bar can be placed into each folding line, two layers of the folded cloth are sewed together along the edge of the rubber string bar or the soft plastic bar so that a ridge can be formed between a sewing line and the folding line, and then the cloth with the ridges is cut and tailored to form the clothes according to needs. The warm-keeping clothes with the transverse ridges has the advantages that the ridges reduce an area contacting other clothes, and therefore heat conduction heat dissipation of heat is reduced. As space among the ridges is covered with other cloth, static air of large amount is contained, and warm-keeping effect is good. Moreover, compared with the cotton-padded clothes and the down jackets, the warm-keeping clothes with the same warm-keeping effect are thinner.

The invention discloses a lower hopper ridge of a hopper car. The lower hopper ridge of the hopper car is made of aluminum alloy materials, and adopts an integrally molded structure. The lower hopper ridge comprises a lower transverse ridge, a connecting part, a supporting part and stiffening beams, wherein the lower transverse ridge comprises two side plates, and one ends of the side plates are fixedly connected in an acute angle; the connecting part comprises two connecting plates, and one ends of the connecting plates are respectively and fixedly connected with the other ends of the two side plates; an included angle between the two connecting plates is larger than that between the two side plates; the supporting part comprises two supporting plates arranged oppositely, and the two supporting plates are respectively and fixedly connected with the other ends of the two connecting plates. Through the adoption of the lower hopper ridge of the hopper car, the dead weight of the lower hopper ridge can be greatly lowered under the situation that the operating requirements of the lower hopper car are met, the improvement of the loading of the car is facilitated, and the lower hopper ridge solves the technical problem that because a lower hopper ridge in the prior art adopts a steel welded structure, the dead weight of the lower hopper ridge is large, and the lower hopper ridge is adverse to the improvement of the loading of the car.

The invention relates to a novel ball throwing and catching sport, comprising a racket and a field structure, the racket comprises a racke4t body, the field structure comprises respective playing areas at two sides of two parties and a middle restricted area, the racket body is internally provided with a ball throwing rail, an upper surface at inner side of the ball throwing rail is provided with transverse ridges; each playing area comprises a single serving area and a neighboring double serving area, which are completely covered in corresponding playing area, an external base line of the single serving area is superposed with an external side line of the playing area, and one side line of the double serving area is superposed with one inner side line of the single serving area. The novel ball throwing and catching sport has the following beneficial effects: on the aspect of racket structure, with jagged curve rail on the racket and irregular grains on the surface, path of the moving ball varies according to different rotation directions and distance, and the sport is rich in enjoyment, has effects of exercising, slimming and the like, and has low demand on playing fields.