Methods, apparatus, and systems provide wireless remote control of firearm accessories using ultrasonic communication through air. In some variations a transmitter and a receiver used in these methods, apparatus, and systems need not be in line-of-sight, so the location of the accessory on the firearm may be selected independently of the location of remote controls for the accessory. The firearm accessories may be or include, for example, laser pointers and illuminators.

An electronic device and/or a method of sealing said device are configured for ease of installation and use. The electronic device has a housing having a recess, a cover concealing the recess and having walls extending circumferentially around the cover and having a channel formed in the outer surface thereof, and at least two through-holes formed through the channel, and an O-ring having a body with at least two tethers each of which passes through a respective hole in the cover.

This is directed to a hook and receiving element combination for securing components forming the shell of an electronic device. The receiving element can include a beam connected to the outer shell component and operative to deflect as the hook element approaches the receiving element. To limit deflections of the outer shell component, the beam can be restrained at opposing ends in directions perpendicular to the beam length, but free to slide along the beam axis. In some embodiments, the receiving element can include a lip for guiding the deflection of the beam as the beam contacts the hook element. In particular, the lip can ensure that the beam deflects at an angle relative to the hook element motion such that a smaller hook element motion is required to engage the beam.

A mobile terminal is provided. The mobile terminal includes: a rear cover; a circuit board; a battery connector; and a fixing member including a first holder arranged on the rear cover and a second holder arranged on the circuit board. The first holder has two first elastic arms, the second holder has two second elastic arms, and each of the two second elastic arms is fastened to each of the two first elastic arms to define a receiving space for receiving the battery connector.

Improvements in capturing an image of a cornea with Placido's disk lines is disclosed. The imaging is with a clam shell clamping device that is easily clamped onto a cellular device and the lighting tube is centered on the camera so the image at the end of the tube can be captured. The clamping device includes a ring light source that illuminates the outside of the tube. The tube has a plurality of geometrically spaced light and dark rings to create evenly spaced rings on the cornea. Imperfections in the cornea will distort the rings. The camera can capture the image and the image or picture can be forwarded to a doctor or other care giver to determine the perfection or imperfection of the cornea.

The present disclosure relates to a female connecting member and a male connecting member, a connector, a mobile terminal and an electronic equipment, wherein the female connecting member includes a first end face, the first end face has a first groove, the first groove is defined by a first side face and a first bottom face encompassed by the first side face, the first side face is provided with N*M contacts, the contacts are arranged in N rows along a depth direction of the first groove, N is an integer greater than or equal to 2, each row includes M contacts distributed along a circumferential direction of the first side face, and M is an integer greater than or equal to 2. In this way, enough contacts can be provided to improve the transmission efficiency of current or data, thus meeting the needs of fast charging or large-flow data transmission.

Portable electronic devices are provided. Each device may be formed from two parts. A first part may be provided with components such as a display, a touch screen, a cover glass, and a frame. A second part may be provided with a plastic housing, circuit boards containing electrical components, and a bezel. Engagement members may be connected to the first and second parts. The engagement members may be formed from metal clips with holes and springs with flexible spring prongs that mate with the holes in the clips. The metal clips may be welded to frame struts on the frame and the springs may be welded to the bezel. During assembly, the first part may be rotated into place within the second part. Retention clips attached to the frame may be used to secure the two parts together. Assembly instructions and associated connector numbers may be provided within the devices.

A display frame for a mobile device includes a first display frame section and a second display frame section. A flexible hinge section couples the first display frame section and the second display frame section. The flexible hinge section enables the first and second display frame sections to bend relative to each other. A first wall is contiguous with the first display frame section, the flexible hinge section, and the second display frame section. The first wall is integral to the first display frame section, the flexible hinge section, and the second display frame section.

Portable electronic devices are provided. Each device may be formed from two parts. A first part may be provided with components such as a display, a touch screen, a cover glass, and a frame. A second part may be provided with a plastic housing, circuit boards containing electrical components, and a bezel. Engagement members may be connected to the first and second parts. The engagement members may be formed from metal clips with holes and springs with flexible spring prongs that mate with the holes in the clips. The metal clips may be welded to frame struts on the frame and the springs may be welded to the bezel. During assembly, the first part may be rotated into place within the second part. Retention clips attached to the frame may be used to secure the two parts together. Assembly instructions and associated connector numbers may be provided within the devices.

A cold worked stainless steel bezel for a portable electronic device is provided. The bezel is secured flush to a housing to form part of the case of the portable electronic device. A brace that includes a slot for receiving a wall extending from the bezel is fixed to the housing. When the bezel engages the housing, the wall of the bezel is inserted in the slot of the brace and releasably held by a spring that engages both the brace and the wall. The bezel can be released by disengaging the spring, (e.g., using a special tool or a magnetic field). Because the bezel is manufactured from cold worked stainless steel, it is hard and resistant to impacts. Cold worked steel also facilitates manufacturing within design constraints and tolerances, and requires very little machining after manufacturing to comply with those constraints.