124 results about "Elliptical recess" patented technology

Exercise treadmill chair platform that resides horizontally over a treadmill when it is not in use to stabilize an office chair while it resides beneath the desk. The platform has a top and bottom flat plate, aligned, square or rectangular shaped, and of a low profile, that slides over the treadmill to cover the belt when the treadmill is not in use, thus enabling the user to safely sit at the desk without having to store away the treadmill. The platform may further comprise a right and left side wall; and, four corner wheels to assist the user in moving the platform, and two bumpers to protect the wheels from entanglements. The top flat plate further comprises oval shaped grooves arranged in a circle, designed to house the wheels of a variety of types of swivel chairs in order to keep the chair from rolling off of the platform.

An interlocking toy formed from construction units, where certain of the construction units include assembly members, preferably in a matrix, that are capable of interlocking with assembly members, preferably in a matching matrix, from certain other construction units. The assembly members may be in the form of notches, slots, tabs, apertures (preferably square apertures or circular apertures), oblong recesses, and tapered oblong recesses, among other similar and other geometric and non-geometric constructs. Similarly, the construction units may be formed to any geometric or non-geometric configuration. An exemplary construction unit may include assembly members in the form of notches, square apertures, and circular apertures.

A portable cushion that minimizes the blocking of blood circulation, stress, and pain in the femoral region caused by sitting on a chair for long hours or an extended time is provided. The overall shape of the cushion resembles human lungs connected to each other at the upper part with an upper surface that is flat, except for two wing portions. The wings are in a convex shape. The cushion is made of EP (Ethylene-Propylene Copolymer) rubber foam. A straight shallow center groove is concavely developed on the upper surface of the cushion along the direction of the wings. Two concave grooves, resembling hemi-oval shapes being cut along the long center axis thereof are developed on the flat upper surface of the seat cushion to receive ischial tuberosities of a user. A shell-shaped concave groove for receiving the coccyx of the user is developed on the rear part of the flat upper surface of the cushion between the two hemi-oval shape grooves. The front side of the cushion, between the two wings, is caved in for receiving and positioning of genitals of the user. The unique geometry of the cushion reduces the pressure to the ischial tuberosities and the coccyx of a user by maximizing the contact area and distribute the user's weight throughout the surface, while minimizing the blocking of blood circulation by minimizing the contact area of the wings of the cushion and the rear part of the thighs of the user.

The present invention discloses a multifunctional end effector, comprising a base (54) and a cutting tool (39); a feed slide (52) on the base (54) and a feed driving mechanism used to drive feed slide (52) to feed cutting tool (39); a swing slide (55) on the feed slide (52) and a swing driving mechanism used to drive swing slide (55) to realize circular arc swing of cutting tool (39); a mounting base (12) on the swing slider (55); a revolving rotation shaft (20) and a rotation shaft driving mechanism used to drive revolving rotation shaft (20) to make the cutting tool rotate in the mounting base (12); an eccentric slide (27) fixed to the end of revolving rotation shaft (20); cutting tool (39) is connected to the end of eccentric slide (27) via the electric spindle (37) and an eccentric regulating mechanism used to regulate eccentric slide (27) and control radial bias of cutting tool (39). Use feed driving mechanism to realize feed of cutting tool or feed of cutting tool along the swing trail through combination with swing driving mechanism; use eccentric regulating mechanism to realize radial bias of cutting tool; make use of rotation shaft driving mechanism to realize feed of cutting tool along the helical trail; it can realize such functions as drilling, boring, reaming, helical milling and reaming of elliptical recess.

The invention relates to an elliptical gear profile generator. The elliptical gear profile generator comprises a base, wherein an elliptical gear, a circular gear and a standard gear are arranged on the base; the circular gear is engaged with the elliptical gear; the standard gear is coaxial to the circular gear; an elliptical groove which is similar to the elliptical gear in shape is arranged on the base at the outer periphery of the elliptical gear; and the circular gear shaft extends to the elliptical gear. The profile generator can be used for regenerating the profile curve of the to-be-machined elliptical gear by virtue of an envelope curve of a tool profile curve, is very simple in structure, and low in manufacturing cost.

A fluid dynamic bearing. A shaft is fit in the sleeve and rotates with respect thereto. A lubricant is filled between the shaft and the sleeve. At least one elliptical groove is formed on either the shaft or the sleeve and between the shaft and the sleeve. When the shaft rotates with respect to the sleeve, the lubricant is filled in the elliptical groove.

The invention discloses a water tank with automatic clearing and display functions. The water tank comprises a strip-shaped base, a fixed mechanism is arranged on the side surface of the strip-shaped base, an elliptical groove is formed in the upper surface of the strip-shaped base, an arc-shaped water accumulation bearing tank is embedded in the elliptical groove, a rotating clearing mechanism is arranged on the side surface of the lower end of the arc-shaped water accumulation bearing tank, a feeding mechanism is arranged on the upper surface of the arc-shaped water accumulation bearing tank, a detection mechanism is arranged on the inner side surface of the arc-shaped water accumulation bearing tank, a display mechanism is arranged on the side surface of the arc-shaped water accumulation bearing tank, a water outlet is formed in the side surface of the lower end of the arc-shaped water accumulation bearing tank, a dustproof screen is embedded in the water outlet, a drain pipe is embedded in the water outlet, a hand valve is arranged on the drain pipe, and a controller is arranged on the side surface of the arc-shaped water accumulation bearing tank. The water tank has the beneficial effects of having a simple structure and being strong in practicability.

The invention discloses an optical imaging conversion module, an object control system and a control method. A human-computer interface board in the optical imaging conversion module uses a linear groove to represent the X, Y and Z axes in a three-dimensional space coordinate system, and uses a round or elliptical groove to represent rotations which take the X, Y and Z axes as centres in the three-dimensional space coordinate system; and user fingers or an operating pen moves in a human-computer interface groove to realize moving or rotating a controlled object in two-dimensional or three-dimensional space, and the central region of the human-computer interface board serves as a word hand input region. The whole control system identifies and codes the meaning of a mobile track of a user on the groove and a human-computer interface bulge by the optical imaging and electronic technologies, and controls an object by transmitting to an order identification and respond end in a wired or wireless mode. The invention unifies the control modes of two-dimensional and three-dimensional space objects.

The invention discloses a children's bath tub with heat preservation function, which comprises a mounting base, an elliptical groove is processed on the upper surface of the mounting base, and a plurality of bar-shaped grooves are processed on the lower surface of the elliptical groove , each of the plurality of strip-shaped grooves is provided with a heating sheet, the lower surface of the oval groove is fixedly connected with an oval heat-conducting waterproof plate, and the upper surface of the oval-shaped heat-conducting waterproof plate An elliptical bath tub body is provided, a circular groove is processed at the center of the inner surface of the oval bath tub body, a temperature sensor is arranged in the circular groove, and a load bearing is provided on the outer surface of the oval bath tub body The box body, the carrying box is equipped with a micro-pump, the upper surface of the carrying box is processed with a circular water outlet, and a folded water outlet is embedded in the circular water outlet, and the folded water outlet One end is fixedly connected with a stretching water pipe. The invention has the advantages of simple structure and strong practicability.

The invention discloses a brake pad which comprises a brake pad framework, filling materials and a friction block. The brake pad framework is provided with at least four oval-shaped grooves, the filling materials are arranged in the grooves, the grooves are filled with the filling materials, and therefore the surface of the brake pad framework is flat. The friction block is attached to the flat surface of the filling materials and the framework. The friction block is made from carborundum, iron oxide powder, bitumen mastic and furan epoxy resin. According to the brake pad, the overall structure is optimally designed, the framework structure with the oval-shaped grooves is adopted, on one hand, the weight of the brake pad framework is reduced, the overall weight is optimized, on the other hand, the filling materials can be added into the groove structure of the brake pad framework, the overall performance of the brake pad is optimized, and binding force is improved by means of the cooperation of the filling materials and the friction block.

The invention relates to preparation of neodymium iron boron cylindrical magnets, in particular to a forming die and a method for preparing a pressed billet of a non-oriented neodymium iron boron cylindrical magnet, and solves the problem that an existing forming die cannot press a pressed billet of a cylindrical magnet with the diameter smaller than 10mm. The forming die for preparing the pressed billet of the non-oriented neodymium iron boron cylindrical magnet comprises a cavity, the cavity includes an upper cavity and a lower cavity, a plurality of parallel half-elliptic grooves can be combined into an elliptic cavity and are correspondingly formed on the contact surfaces of the upper cavity and the lower cavity respectively, and the cross sectional dimension of the elliptic cavity includes: an elliptic long axis=the magnet diameter/(0.75-0.77), an elliptic short axis=the magnet diameter/(0.825-0.835), and the length of each half-elliptic groove=the magnet length/(0.75-0.76), wherein the magnet refers to the non-oriented neodymium iron boron cylindrical magnet finally manufactured. The forming die is reasonable in design and simple in structure.

The invention discloses a large-scale pearl oyster catching robot. The catching robot comprises a base, a pearl oyster loading part, a pearl oyster storing part, four turbine parts and two pearl oyster grabbing parts, and is characterized in that the pearl oyster loading part is sliadably installed in an oval groove of the base, and two second racks are meshed with two second gears respectively. According to the large-scale pearl oyster catching robot, third gears are driven by fourth stepping motors of the two pearl oyster grabbing parts to drive the pearl oyster grabbing parts to move, foursuction discs are driven by four ninth hydraulic cylinders to suck pearl oysters, and next, three seventh hydraulic cylinders and three eighth hydraulic cylinders are coordinated to enable three second connecting rods to clamp the pearl oysters, and next, the pearl oysters are put into a pearl oyster storage box through the pearl oyster grabbing parts; and therefore automatic pearl oyster grabbingis realized, grabbing efficiency is improved, and grabbing operation is facilitated.

The invention provides a pipe slotter for a wall. The pipeline slotter comprises a fixed section, a transition section, an extension section and an end which are fixedly connected into a whole in sequence, wherein the fixed section is in the shape of a square column; an oval groove is arranged on each surface of the square column so as to fix the square column on an electric hammer; the diameter of the transition section is larger than that of the fixed section and the transition section is cylindrical; the diameter of the extension section is larger than that of the transition section and the extension section is also cylindrical; and the end is provided with double blades and the width of the end is larger than the diameter of the extension section. The pipeline slotter has the beneficial effects of improving the slotting efficiency by more than 5 times and reducing the labor intensity of workers.

The invention provides a municipal road well lid based on gear driving and used for efficient drainage, relates to the technical field of municipal road well lids used for drainage, and solves the problems that the case of stealing well lids frequently occurs mainly because fixing elements for the well lids are mostly common bolts and other fixing elements, and thieves can detach the fixing elements through common tools, so that the phenomenon of stealing the well lids frequently occurs. The municipal road well lid based on gear driving and used for efficient drainage comprises a base, whereina driven cleaning mechanism is rotationally installed in the base, and a drive cleaning mechanism which forms transmission fit with the driven cleaning mechanism is rotationally installed in the base. The well lid is fixedly installed on the base through six groups of fastening mechanisms, and through a unique design for elliptical groove structures in the fastening mechanisms, the incapacity ofrapidly detaching the fastening mechanisms through the common tools without the cooperation of a portable detachment mechanism is ensured, so that an anti-theft effect is acted.

The invention relates to a bed, in particular to an infant transfusion bed for infant transfusion. The infant transfusion bed comprises a transfusion bed board and is characterized in that: the central position of the transfusion bed board is provided with an oval groove; leg binding belts are fixed on both sides at the back edge of the groove; hand bonding belts are fixed on the both sides at the front edge of the groove; and a soft pillow is arranged in the middle of the front of the groove. Therefore, the infant transfusion bed has the advantages of simple structure, convenient use and convenient infant acupuncture.

Timepiece assembly (100) comprising centring pins (3) integral with a bottom plate (1), each arranged to cooperate with radial and tangential play with an oblong groove (4) in a dial (2), for the relative positioning of said dial with respect to said bottom plate (1), and a holding means (5) integral with said bottom plate (1), arranged to cooperate with a complementary holding means (6) integral with said dial (2), said holding means (5) and/or complementary holding means (6) comprising an elastic return means (7) for pressing said dial (82) resting onto said bottom plate (1).

Said elastic return means (7) has tangential mobility in a plane (PT) perpendicular to the plane (P) of said bottom plate (2) and to a radial line (R) connecting the centre (O) of said bottom plate (2) to said elastic return means (7).