Abstract: The present disclosure relates to the technical field of special locks. The lock structure with improved safety includes a support assembly, a fixed cavity and an unlocking cavity; the fixed cavity is provided with a lock beam; the unlocking cavity is provided with a lockhole and a locking device; the lock beam is threaded into a trigger position of a gun and then into the lockhole and is locked by the locking device; an inner wall of the lockhole extends into the unlocking cavity to form a lockhole ring; a convex rib is arranged on an inner wall of the lockhole ring; a groove is formed in an outer wall of the lock beam; the convex rib and the groove are connected with each other in an embedded manner, so that the lock beam is stabilized in the lockhole ring.

Abstract: Systems, apparatuses, and methods are described for adjusted exposure threshold values. Each user may be associated with one or more of a plurality of exposure threshold values, for example, a frequency cap value, that may be a cap (e.g., threshold) on the number of times a repeat advertisement content may be output to a user. Exposure threshold values may be modified based on one or more viewing statistics, for example, information about one or more interactions of the user associated with one or more outputs of repeat advertisement content, environment information, and/or one or more advertisement characteristics.

Abstract: The present disclosure relates to the technical field of recreational vehicle locks, and in particular, to a deadbolt drive mechanism, a handle fixing mechanism, and an intelligent recreational vehicle lock. The intelligent recreational vehicle lock includes a deadbolt drive mechanism, a handle fixing mechanism, an inner lock body, an outer lock body, a lock cylinder assembly, and an intelligent control component; the lock cylinder is connected between the inner lock body and the outer lock body; the deadbolt drive mechanism is arranged in the lock cylinder assembly; the handle fixing mechanism is arranged on the outer lock body; the intelligent control component is provided with a control device, a power supply device, a password setting assembly, a password inputting assembly, and a locking button which are electrically connected to each other.

Abstract: The present disclosure relates to the technical field of gun locks, and particularly, to a lock for safety protection of a gun trigger and a multifunctional gun storage stand. The lock includes a base, a shell fixedly connected to the base, a stabilizer fixedly connected to the shell, and a locking device mounted inside the shell. The locking device is provided with a movably opened and closed lock catch assembly and a locking assembly restraining the lock catch assembly from being movably opened and closed; the lock catch assembly is movably connected to the locking assembly, and the lock catch assembly is provided with a lock catch post.

Abstract: The present disclosure provides a key case, and relates to the technical field of key cases. In the key case, the unlocking drive unit can be prevented from supplying power always and maintaining the unlocking state, the power can be effectively saved, so that the key case is more energy-saving and environment-friendly.

Abstract: The present disclosure relates to the technical field of special locks. The lock structure with improved safety includes a support assembly, a fixed cavity and an unlocking cavity; the fixed cavity is provided with a lock beam; the unlocking cavity is provided with a lockhole and a locking device; the lock beam is threaded into a trigger position of a gun and then into the lockhole and is locked by the locking device; an inner wall of the lockhole extends into the unlocking cavity to form a lockhole ring; a convex rib is arranged on an inner wall of the lockhole ring; a groove is formed in an outer wall of the lock beam; the convex rib and the groove are connected with each other in an embedded manner, so that the lock beam is stabilized in the lockhole ring.

Abstract: A hydraulic ship lift, including: a mechanical synchronizing system; a stabilizing and equalizing hydraulic driving system; and a self-feedback stabilizing system. The stabilizing and equalizing hydraulic driving system includes first resistance equalizing members arranged at corners of branch water pipes or/and second resistance equalizing members arranged at bifurcated pipes, circular forced ventilating mechanisms arranged at front of water delivery valves of a water delivery main pipe, and pressure-stabilizing and vibration-reducing boxes arranged behind the water delivery valves. The self-feedback stabilizing system includes a plurality of guide wheels; each guide wheel of the self-feedback stabilizing system is fixed on a ship reception chamber through a supporting mechanism.

Abstract: A hydraulic ship lift, including: a mechanical synchronizing system; a stabilizing and equalizing hydraulic driving system; and a self-feedback stabilizing system. The stabilizing and equalizing hydraulic driving system includes first resistance equalizing members arranged at corners of branch water pipes or/and second resistance equalizing members arranged at bifurcated pipes, circular forced ventilating mechanisms arranged at front of water delivery valves of a water delivery main pipe, and pressure-stabilizing and vibration-reducing boxes arranged behind the water delivery valves. The self-feedback stabilizing system includes a plurality of guide wheels; each guide wheel of the self-feedback stabilizing system is fixed on a ship reception chamber through a supporting mechanism.

Abstract: A negative pressure ink supply system includes (1) a primary ink cartridges, (2) a secondary ink cartridges, which are connected by means of an ink tubes with the negative pressure ink cartridge assemblies provided between the secondary ink cartridges and the jet head. The ink, pumped from the primary ink cartridge, is put into the secondary ink cartridge, wherein it is supplied to the negative pressure ink cartridge and then in turn from the negative pressure ink cartridge to the jet head. The liquid level in the secondary cartridge is lower than the jet head surface and adjustable. The negative pressure ink supply system is suitable for image-printing equipment by supplying liquid ink, such as large format machines, portrait machines, plotters, etc.

Abstract: A negative pressure ink supply system includes (1) a primary ink cartridges, (2) a secondary ink cartridges, which are connected by means of an ink tubes with the negative pressure ink cartridge assemblies provided between the secondary ink cartridges and the jet head. The ink, pumped from the primary ink cartridge, is put into the secondary ink cartridge, wherein it is supplied to the negative pressure ink cartridge and then in turn from the negative pressure ink cartridge to the jet head. The liquid level in the secondary cartridge is lower than the jet head surface and adjustable. The negative pressure ink supply system is suitable for image-printing equipment by supplying liquid ink, such as large format machines, portrait machines, plotters, etc.