297 results about "Spherical recess" patented technology

A breathing mask has a mask body, a mounting bracket and a universal connecting tube. The mask body has a first universal socket bracket having a first spherical recess. The mounting bracket is mounted on the mask body and has a second universal socket bracket having a second spherical recess. The universal connecting tube is mounted universally pivotally in the mask body and has a ball joint mounted universally rotatably in the first and second spherical recesses. The universally rotating ball joint allows a breathing tube connected to the universal connecting tube to pivot to any orientations and prevents the breathing tube from over bending.

The invention relates to a notebook computer and a multi-directional bracket thereof. The notebook computer comprises a display screen, the multi-directional bracket and a camera, wherein the display screen is provided with a containing groove; the multi-directional bracket is contained in the containing groove or bent out of the containing groove and comprises a first rod body, a second rod body, a spherical bulge and a spherical recess, wherein the spherical bulge is arranged on one end of the first rod body, the spherical recess is arranged on one end of the second rod body, and the spherical bulge is embedded into the spherical recess and rotates in the spherical recess so that the first rod body is bent relative to the second rod body; and the camera is arranged at the tail end of the multi-directional bracket.

A speaker housing assembly including an adapter and a speaker enclosure is disclosed. The adapter has an escutcheon and a partially spherical recessed concave portion. The speaker enclosure has a partially spherical sidewall that is received in the recessed concave portion of the adapter. A lock assembly secures the speaker enclosure to the adapter through an arcuate slot. Flanges of the lock assembly are placed in registry with teeth formed on opposite sides of the arcuate slot to lock the speaker enclosure in place. An elastomeric pad is provided between the recessed concave portion and the partially spherical sidewall to dampen vibrations and supplement the locking engagement of the lock assembly.

A coupling device for connecting a bicycle rack to a hitch ball includes a casing and a pivotal frame which is pivotally connected to the casing and the hitch ball can be clamped within a spherical recess between the casing and the pivotal frame. A push plate is located in the casing and the pivotal frame includes a limiting member to which the push plate is in contact therewith. The push plate has an inclined surface so that the limiting member together with the pivotal frame are pushed toward the hitch ball by moving the push plate to further secure the connection of the hitch ball, the casing and the pivotal frame. The pivotal frame can be pivoted to allow the hitch ball to be removed from the spherical recess.

A spherical bearing is disclosed, which is easy to make, can be made small, and does not have a sticking problem of a spherical block. The spherical bearing includes a plastic spherical block made of plastic and including a convex spherical surface, a spherical groove member including a spherical groove with which the convex spherical surface engages and surface-contacts and allowing rotation with respect to the plastic spherical block, and a weight-delivering member installed opposite to the spherical groove member with the plastic spherical block in the middle, and wherein a frictional surface of the plastic spherical block rubbing against the spherical groove member or the weight-delivering member is made of engineering plastic such as PA, POM etc. having a hardness of 75D through 95D.

An attachment structure and ceramic matrix composite liner combination for a gas turbine engine has a ceramic matrix composite liner including plural flanges extending away from a face of said liner. The flanges have an opening and a bracket secured to the flanges by a securement member extending through the opening in the flange, and through an opening in the bracket. The flanges are secured to the securement member through at least one washer having a spherical face facing a spherical recess in the flanges.

A ball hitting practice device includes a base member having a reception portion on a top thereof and a spherical recess is defined in an underside of the reception portion. A passage is defined through the reception portion and communicates with the spherical recess. A post can be a single post or composed of multiple sections. The post has a base part at a lower end thereof and a cup is connected to a top of the post. The base part is matched with the spherical recess and a diameter of the post is smaller than an inner diameter of the passage. The post extends through the passage and a top of the base part is in contact with an inner surface of the spherical recess. A positioning cap is fixed to the underside of the base member so as to position the base part. A ball is put on the cup and the user hits the ball to practice hitting skills.

The invention relates to a spent fuel storage rack and in particular discloses a spent fuel storage rack in a pressurized water reactor nuclear power station. The storage rack comprises four enclosing plates, an upper bearing plate positioned at the tops of the enclosing plates, and a lower bearing plate and a storage sleeve which are positioned at the bottoms of the enclosing plates, wherein the enclosing plates, the upper bearing plate and the lower bearing plate form a cubic cavity; the storage sleeve is positioned in the square holes on the upper bearing plate and the lower bearing plate; base plates of the storage sleeve are positioned on the lower bearing plate; legs are fixedly connected with the lower bearing plate; thread sleeves on the legs are welded with the lower bearing plate; cylindrical convex plates are arranged at the bottoms of the thread sleeves; the upper ends of the thread sleeves are fastened with the lower bearing plate and the base plates by nuts; adjusting screws are arranged in and in threaded connection with the thread sleeves; the bottoms of the adjusting screws are freely positioned in the spherical recesses of bottom backing plates; and the base plates are provided with through holes communicated with the inside of the storage sleeve and the through holes are communicated with the through holes on the bearing plates. The storage rack has high storage capacity and good shock resistance.

An improved shock damper for building is composed of bottom base, top carrier, sliding groove consisting of upper and lower slide block and spherical receptor, and springs for connecting bottom base with top carrier. An arc recess is respectively made on the bottom surface of top carrier and top surface of bottom base for recepting upper and lower slide blocks which have a semi-spherical recess for containing the said spherical receptor. Its advantages are high shock damping effect, simple structure and low cost.

A golf putter, ball retriever and retainer configured to retrieve and hold a golf ball. The putter defines a substantially symmetrical configuration from heel to toe. The ball retriever and retainer is defined by a spherical recess formed in the sole of the putter and an opening defined on the top surface thereof. At least one resilient tab is defined in the sole to enlarge the sole opening. Ball alignment indicia are disposed on the top surface of the golf putter head, the ball alignment indicia defining at least a C-shaped configuration, whereby a ball is visually aligned between said first and second ends to center the ball on said striking face. The ball alignment indicia may further include at least one line segment disposed coincidentally to the initial direction of travel of the golf ball.

A hip joint prosthesis with a shaft fastened on the shaft head of which there is a ball head which in turn is inserted in a rotatable manner in the spherical recess of a socket insert and the socket insert is coupled with a hip socket wherein the shaft can be implanted in the femur and the hip socket can be implanted in the pelvic bone. To avoid transmission of vibrations, damping elements of a vibration-damping material are arranged at the coupling points of the shaft head with the ball head and/or of the socket insert with the hip socket.

A plurality of pinion gears 4A, 4B which are rotatably held within a differential case 2, and a pair of left and right side gears 6L, 6R which are in meshing engagement with the pinion gears 4A, 4B and connected to left and right axles are provided. A ring 18A is fitted around the pinion gears 4A, 4B to prevent the pinion gears 4A, 4B from being withdrawn. The ring 18A has an inner peripheral surface in which a spherical recess 18Aa centered about a point of intersection between an axis of rotation of the side gears 6L, 6R and an axis of rotation of the pinion gears 4A, 4B is formed while an end of the pinion gears 4A, 4B which is disposed toward the outer periphery is formed with a spherical projection 4Ac having a similar curvature as the recess in the ring 18A.

An electrothermal actuator producing linear and/or rotational movement includes a housing having a longitudinal axis. A chamber within the housing contains a working fluid that changes phase upon heating. A piston is slidably disposed within the housing and movable along the longitudinal axis between first and second positions. A spring biases the piston toward the first position. The piston slides from the first position to the second position in response to heating of the working fluid. The piston includes a piston rod extending along the longitudinal axis and protruding from the housing. The housing includes helical grooves on an interior surface and the piston includes partially spherical recesses. Balls captured between the grooves and recesses produce rotation of the piston and piston rod when the piston moves between the first and second positions.

Disclosed herein is a door stop pin assembly including a pin and a base pad. The pin has a concave spherical recess. And, the base pad has an open end and a closed end such that the open end has a convex spherical portion in contact with the concave spherical recess.

The present invention provides a light guide plate and a manufacturing method thereof. The manufacturing method firstly forms a plurality of spherical recesses arranged at intervals on a light-emitting surface of a light guide plate body when the light guide plate body is formed by pressing, and then applies a diffuser particle with corresponding shape on a surface of each of the spherical recesses, so as to complete the manufacture of the light guide plate. When being mounted in a backlight module, the light guide plate benefits the backlight module of reducing the use of diffuser films, so as to reduce the thickness and weight of the backlight module.

A ball latch 46 is reciprocally mounted in a latch slot 44 and is biased downwardly by coil compression spring 68 until the semi-spherical recess at its lower end becomes coextensive with the spherical surface of the ball socket 36. When the trailer hitch 16 is placed on the hitch ball 26, the force applied by the hitch ball against the ball latch 46 moves the ball latch upwardly against the bias of its spring 68 to make room for the hitch ball to enter the ball socket 36. Once the hitch ball is fully inserted in the ball socket 36, the spring 68 pushes the ball latch 46 back to its locked position about the hitch ball.