A safety switch (2) with a latching unit (12), by means of which an associated actuator (3) is held in a latched position. The latching unit (12) has an arrangement of latching jaws (14). Each latching jaw (14) is spring-mounted by means of a spring unit (15). The latching jaws (14) are concentrically arranged and each face one another with a first free end and delimit an insertion opening (A). The latching jaws (14) are held in latched position by the spring forces generated by the spring units (15). The latching jaws (14) can be displaced against the spring forces of the spring unit (15), which serves to enlarge the insertion opening (A).

A safety switch (2) with a latching unit (12), by means of which an associated actuator (3) is held in a latched position. The latching unit (12) has an arrangement of latching jaws (14). Each latching jaw (14) is spring-mounted by means of a spring unit (15). The latching jaws (14) are concentrically arranged and each face one another with a first free end and delimit an insertion opening (A). The latching jaws (14) are held in latched position by the spring forces generated by the spring units (15). The latching jaws (14) can be displaced against the spring forces of the spring unit (15), which serves to enlarge the insertion opening (A).

A control panel, a self-propelled switch apparatus, and a power device (13). The control panel comprises a pushing rod (1) connected to a machine body and a panel assembly (2) reciprocatingly sliding on the pushing rod. The control panel further comprises locking assembly (41, 42) connected to the panel assembly. The locking assembly (41, 42) are adapted to lock the panel assembly on the pushing rod and unlock the control panel and the pushing rod. The control panel further comprises a self-propelled switch (134), and when the self-propelled switch (134) is triggered, a device in which the control panel is disposed can be switched from a manual-power driving mode to a self-propelled driving mode. By means of the solution, a garden tool can walk in a self-propelled manner, and can also be pushed to walk.

A control panel, a self-propelled switch apparatus, and a power device (13). The control panel comprises a pushing rod (1) connected to a machine body and a panel assembly (2) reciprocatingly sliding on the pushing rod. The control panel further comprises locking assembly (41, 42) connected to the panel assembly. The locking assembly (41, 42) are adapted to lock the panel assembly on the pushing rod and unlock the control panel and the pushing rod. The control panel further comprises a self-propelled switch (134), and when the self-propelled switch (134) is triggered, a device in which the control panel is disposed can be switched from a manual-power driving mode to a self-propelled driving mode. By means of the solution, a garden tool can walk in a self-propelled manner, and can also be pushed to walk.

Disclosed are apparatus and corresponding and/or associated methodology generally relating to lawn mower security systems and more particularly to providing the ability to safeguard ride-on style lawn mowers against unauthorized cranking of its engine if the mowers have push/pull mower deck or power-takeoff (PTO) switch technology. Per some embodiments, presently disclosed security components may be secured to a PTO or mower deck switch to prevent the ability to position such switch in a disengaged position. Therefore, existing safety and interlock features of the existing ride-on mower otherwise prevent someone from being able to crank the mower, which helps to guard against unauthorized use and/or theft of the equipment.

A work machine includes an engine, a hydraulic pump, a work apparatus driver to receive a pressurized fluid, a hydraulic circuit connecting the hydraulic pump with the work apparatus driver, a control valve in the hydraulic circuit, a relief valve connected to a first portion upstream of the control valve, a drain path connected to a second portion upstream of the first portion, an on-off valve to open and close the drain path, and a controller to control the on-off valve based on a state of the engine. The controller is configured or programmed to keep the on-off valve open after detecting an operation to start the engine until detecting a start of the engine and to close the on-off valve in response to detecting the start of the engine.

A work machine includes an engine, a hydraulic pump, a work apparatus driver to receive a pressurized fluid, a hydraulic circuit connecting the hydraulic pump with the work apparatus driver, a control valve in the hydraulic circuit, a relief valve connected to a first portion upstream of the control valve, a drain path connected to a second portion upstream of the first portion, an on-off valve to open and close the drain path, and a controller to control the on-off valve based on a state of the engine. The controller is configured or programmed to keep the on-off valve open after detecting an operation to start the engine until detecting a start of the engine and to close the on-off valve in response to detecting the start of the engine.

A rotary switch device includes a terminal base to which a center portion contact and a fixed contact are fixed, a rotation operation member which is operable to rotate around the center portion contact with respect to the terminal base, a plate-like movable contact member which includes a contact protrusion part and a contact surface and which is held in the rotation operation member so as to short-circuit between the center portion contact and the fixed contact at a conductive rotation position, and a compression coil spring of a barrel type.

A rotary switch device includes a terminal base to which a center portion contact and a fixed contact are fixed, a rotation operation member which is operable to rotate around the center portion contact with respect to the terminal base, a plate-like movable contact member which includes a contact protrusion part and a contact surface and which is held in the rotation operation member so as to short-circuit between the center portion contact and the fixed contact at a conductive rotation position, and a compression coil spring of a barrel type.

A lock insert for a cylinder lock is disclosed for locking an electric switch, including a main part with an opening for receiving the cylinder lock. In an embodiment, the inner wall of the opening is designed to at least partially contact an outer wall of the cylinder lock, and in the inner wall at least one slot is formed to allow freedom of radial movement of locking elements in the cylinder lock, the positions of which correspond to a locked position of the cylinder lock.