Abstract: The present invention relates to electronic and mechanical dual combination locks. In certain embodiments, electronic and mechanical dual combination locks include: a lock base, a spin dial, a spin dial cover, and a spin dial release conversion mechanism. The lock base includes a mechanical combination lock inside. An electronic combination lock is positioned inside the spin dial cover. The spin dial release conversion mechanism has a spin dial release positioned on the top of the lock base. The spin dial release is used by the user to switch the electronic and mechanical dual combination lock between the electronic combination lock and the mechanical combination lock. When spin dial release is placed in a first position, the electronic and mechanical dual combination lock becomes the electronic combination lock. When the spin dial release is placed in a second position, the electronic and mechanical dual combination lock becomes the mechanical combination lock.

Abstract: The present invention relates to a programmable switching system having N interconnected switching devices (ISDs), each of the ISDs having a unique network address. An ISD includes a switch operating in switching mode and programming mode, a communication interface, a microprocessor, and a memory. The microprocessor controls operation of ISDs when switch is in switching mode and programs ISD when switch is in programming mode. The memory includes a network address storage, and firmware. When the firmware is executed at the microprocessor, firmware is configured to: communicate with all ISDs of programmable switching system through communication interface over a network, receive user's inputs at switches of ISDs, and in response of the received user's inputs, to program ISDs, when switch is in programming mode, and receive user's input at the switch to perform switching functions of the ISD, when the switch is in switching mode.

Abstract: The present disclosure relates to a rotating lock latch bolt and a lock having rotating lock latch bolt. In certain embodiments, rotating lock latch bolt may include a first cylindrical body and a second cylindrical body connected co-axially below the first cylindrical body. The lock may include a lock latch, a lock latch control mechanism, a rotating lock latch bolt, and a rotating lock latch bolt control mechanism. Lock latch control mechanism may be configured to drive lock latch to a first position to lock the lock, and to a second position to unlock the lock. The rotating lock latch bolt may be configured to bolt the lock latch to prevent the lock latch from moving when the lock latch is in the first position. The rotating lock latch bolt control mechanism may be configured to rotate the rotating lock latch bolt to bolt and release the lock latch.

Abstract: An electronic-mechanical dual control lock includes an electronic control mechanism, a mechanical control mechanism, a half gear, a cam, a rotary plug, and a rotary tongue. The electronic control mechanism includes an electronic actuating part and an engaging groove gear. The electronic actuating part is meshed with the engaging groove gear. A bottom surface of the engaging groove gear is fit with a bottom surface of the cam. The mechanical control mechanism includes a mechanical actuating part and the half gear. The mechanical actuating part is meshed with the half gear. The cam is driven by the engaging groove gear and the half gear separately and independently. The rotary plug includes a rotary shaft and a plug body. The rotary shaft is arranged at one end of the plug body and is engaged in the cam. The plug body is a cylinder provided at a side thereof with a groove.