9 results about "Crown form" patented technology

The utility model discloses a fireproof decorative plate connecting structure. The fireproof decorative plate connecting structure comprises an embedded part and an inserted part, the embedded part is of a hollow structure, the right end of the embedded part is provided with an opening, the embedded part is composed of four adjacent sheet-shaped parts which are spaced by 90 degrees, the right end of each sheet-shaped part is a neck part, the left end of each sheet-shaped part is a head part, the head part is narrow in left and wide in right, and the right end of each head part protrudes out of the face, close to the outer side, of the corresponding neck part. The insertion piece comprises four elastic clamping pieces fixed to one face of the circular plate, the included angle between every two adjacent elastic clamping pieces is 90 degrees, the distance between the inner sides of the opposite elastic clamping pieces ranges from 1 cm to 5 cm, the left ends of the elastic clamping pieces are coronal parts, and after the insertion piece is completely inserted into the embedded piece through the opening, the left ends of the coronal parts abut against the left end of the inner side of the head of the embedded piece. And the right end of the coronal part is propped against the right end of the inner side of the head part of the embedded part. The mounting efficiency of the decorative plate is improved.

A ball bearing includes an inner ring including a raceway groove, an outer ring including a raceway groove, a plurality of balls disposed between the raceway grooves, and a retainer having a crown shape to be inserted between the balls. The retainer includes a base portion having an annular shape, a pair of pillar portions extending from the base portion in an axial direction, and a plurality of pockets formed along a circumferential direction. The balls are fitted between the pillar portions. The retainer comes into contact with the inner ring, and a tapered surface having an inner diameter gradually increasing toward the axial direction is provided at a corner portion at an inner peripheral surface side of the base portion.

This invention discloses an invisible orthodontic device for correcting lingual misalignment of teeth, comprising a crown sleeve, an elastic blade, and a rotation fulcrum. The crown sleeve can be fitted onto the tooth crown and is divided into a lingual side, a labial side, and an incisal edge. The root of the elastic blade is connected to the lingual wall of the crown sleeve, and a reinforcing rib is provided at the connection between the elastic blade and the crown sleeve. The labial end of the crown sleeve is provided with a rotation fulcrum. The device also includes a rigid terminal surface, which is disposed on the labial and incisal walls of the crown sleeve. The invisible orthodontic device for correcting lingual misalignment of teeth provided by this invention can be used to correct lingual misalignment of teeth, and the correction process is fast, low-friction, and without occlusal interference.

The invention discloses a synchronous design and manufacturing method for a personalized abutment and an outer crown. Collaborative design of a three-dimensional model of the personalized abutment and a three-dimensional model of the outer crown is executed in parallel; wherein in the collaborative design process, the modification of the personalized abutment model influences the design of the outer crown model in real time, and the modification of the outer crown model also influences the design of the personalized abutment model in real time, so that the synchronous optimization of the abutment and the outer crown shape is realized. Through the integrated digital model, the design process of the abutment and the crown is changed from series connection to parallel connection, and full-process digital cooperative control from data collection to final manufacturing is achieved.

This invention provides a crown-type cage that contributes to quieter bearings and longer lifespan by improving lubrication performance. [Solution] The crown-shaped holder 10 comprises an annular rim portion 11, a plurality of column portions 12 extending axially in one direction from a plurality of circumferential locations on the rim portion 11, and claw portions 13 extending axially in one direction from the axial end 12b of each column portion 12. The rim portion 11 and a pair of adjacent column portions 12 and claw portions 13 in the circumferential direction form a pocket 20. The diameter D1 of the inner diameter side wall 13a of the claw portion 13 is greater than the diameter D2 of the inner diameter side wall 12a of the column portion 12.

A brick (1, 18, 23) comprises two opposing joining surfaces (3) for lateral connection with another brick (1, 18, 23), and two opposing brick outer walls (2). The joining surfaces (3) and brick outer walls (2) define a brick interior (4). The brick further comprises a crown-shaped cavity (5) located within the brick interior (4).

[Problem] The purpose of the present invention is to provide a crown-type retainer capable of coping with high speed rotation by reducing weight and efficiently supplying lubricating oil between an outer ring and an inner ring. [Solution] A typical configuration of this crown-type retainer according to the present invention is a resin crown-type retainer 100 for retaining rolling elements rolling between inner and outer rings of a bearing 10. The crown-type retainer 100 includes: an annular part 110 centered on the axis of the bearing 10; and a plurality of retaining parts 120 arranged in the circumferential direction of the annular part 110 and having claws for retaining the rolling elements. An axial groove 140 is formed in an outer peripheral surface or an inner peripheral surface between the retaining parts 120.

The object of the present invention is to provide a bottle made of a thermoplastic material (e.g., PET) that provides an optimal balance between mechanical properties and lightweight, particularly due to its bottom. To achieve this, the bottle according to the invention comprises a bottom (2), a body (3), and a neck (4). The bottom (2) comprises: - a dome (9), - a crown-shaped arch (12), - an annular base (13), - sidewalls (14), - six radial main grooves (16), - five radial secondary grooves (7) located between the main grooves (16), each radial secondary groove having an end Ev located in the arch (12) and a peripheral end Ep located in the sidewalls (14). The bottom (2) is such that the ratio Mf / Vuf is less than or equal to 0.050 g / ml, where Mf is the weight of the bottom and Vuf is the available volume of the bottom (2), and such that the ratio is greater than or equal to 4.4, where the base of the dome (9) (P) is the weight of the bottom and Vuf is the available volume of the bottom (2), and ... base of the dome (9) (P) is the base of the bottom (P) and V B The diameter of H do (P A According to 1, the present invention also relates to a method for manufacturing the aforementioned bottle and a mold.