Apparatus allowing ventilation through a ventilation shaft to an underground ventilation duct fluidly communicating through the ventilation shaft to an atmospheric opening of the shaft and on threat of flooding operable to prevent downward flow of surface water into the ventilation duct includes support sidewalls fitting in the shaft providing a ventilation passage between support top and bottom openings and a suspension member supported on opposed lateral sidewalls proximate the top opening holding one or more hinge connected panels that manually release to rotationally close the passage and are manually rotationally liftable to a home position allowing ventilation. A panel drain automatically closes when the panel is raised to home position so it is already closed when the panel is released to rotationally close the passage.

Apparatus allowing ventilation through a ventilation shaft to an underground ventilation duct fluidly communicating through the ventilation shaft to an atmospheric opening of the shaft and on threat of flooding operable to prevent downward flow of surface water into the ventilation duct includes support sidewalls fitting in the shaft providing a ventilation passage between support top and bottom openings and a suspension member supported on opposed lateral sidewalls proximate the top opening holding one or more hinge connected panels that manually release to rotationally close the passage and are manually rotationally liftable to a home position allowing ventilation. A releasable latching system between panel and a suspension member holder catches rising panels to hold them in home position ready for release.

Apparatus allowing ventilation through a ventilation shaft to an underground ventilation duct fluidly communicating through the ventilation shaft to an atmospheric opening of the shaft and on threat of flooding operable to prevent downward flow of surface water into the underground ventilation duct includes support sidewalls fitting in the shaft providing a ventilation passage between support top and bottom openings and a suspension member supported on opposed lateral sidewalls unobstructively horizontally spanning the passage proximate the top opening and holding one or more hinge connected panels in the passage that manually release to rotationally close the passage and prevent flooding and are manually rotationally liftable to a home position allowing ventilation. The suspension member is liftingly removable from the support and may include end keys received in keyed supports to allow the suspension member to fit in the supports so a specific panel closes to a specific sidewall.

Apparatus allowing ventilation through a ventilation shaft to an underground ventilation duct fluidly communicating through the ventilation shaft to an atmospheric opening of the shaft and on threat of flooding operable to prevent downward flow of surface water into the ventilation duct includes support sidewalls fitting in the shaft providing a ventilation passage between support top and bottom openings and a suspension member supported on opposed lateral sidewalls proximate the top opening holding one or more hinge connected panels that manually release to rotationally close the passage and are manually rotationally liftable to a home position allowing ventilation. A panel drain automatically closes when the panel is raised to home position. A releasable latching system between panel and a suspension member holder catches rising panels to hold them in home position. The suspension member may include end keys received in keyed supports so a specific panel faces a specific sidewall.

Apparatus allowing ventilation through a ventilation shaft to an underground ventilation duct fluidly communicating through the ventilation shaft to an atmospheric opening of the shaft and on threat of flooding operable to prevent downward flow of surface water into the underground ventilation duct includes one or more hinged panels closing a ventilation passage between the top and bottom of a support fitting in the shaft to prevent flooding. The panels have handles on their topside and pivotable arms on their underside and are liftable to an upright home position allowing ventilation, using tools to reach through grating covering openings on the shaft and lift the panel handles and after the panels are partially lifted, using reach tools to engage and lift the arms to press them again support sidewalls to exert lateral force on underside of the panels to complete upward rotation to the home position.

The present invention is provided with: a first housing; a second housing; a guide tube; a third housing; a motor part that is incorporated in the first housing; a screw shaft that is driven to rotate upon reception of the rotational force of a shaft of the motor part and applies power to the third housing; a bearing holder that is provided in the first housing; an inner flange that is provided in the second housing; an outer flange that is provided in the guide tube and that is arranged at a position where the outer flange overlaps the inner flange in an axial direction; a seal that is sandwiched between the inner and the outer flanges; and a coil spring (47) that is provided between the second housing (7) and the guide tube (48) and presses the inner flange (46) toward the outer flange (49) side.

A circuit assembly comprising a sealed interface is configured to isolate one or more electrical components. The assembly comprises a circuit board comprising a substrate and a cover comprising a polycarbonate material in connection with the substrate. The assembly further comprises an adhesive seal disposed around a perimeter surface of the cover. The adhesive seal comprises a UV curable adhesive having a chemical composition. The assembly further comprises a polyamide over-molded coating enclosing at least a portion of the circuit board and covering the adhesive seal.

A system for a vehicle includes: a door; an electric actuating motor that opens and closes the door, the electric actuating motor configured for actuating at a hinge of the door; a push-open actuator mounted at a rear of the door, the push-open actuator configured for pushing against a body of the vehicle; and a wireless device configured for communications to the vehicle. A system for a vehicle includes: a front door; a rear door behind the front door, the rear door having a dual-hinge design that opens and closes in a substantially vertical direction; an electric actuating motor that opens and closes the front door, the electric actuating motor configured for actuating at a hinge of the front door; and a wireless device configured for communications to the vehicle.

An escape system for a sinking car and an optoelectronic component thereof are disclosed. The optoelectronic component includes a housing and an optoelectronic module. The escape system for a sinking car includes an optoelectronic component and a motherboard. A lighting unit of the escape system for a sinking car and an optoelectronic component thereof is installed on a car to emit light. After the car fell into water, by the characteristic that when light passes through a medium, the attenuation in light energy can be detected effectively because light is absorbed by that medium (such as liquid), the car sinking signal can be received and transmitted quickly, thereby actually taking the opportunities of rescue to reduce casualties.

A vehicle door opening/closing apparatus includes: an electrode provided near a vehicle door, which is opened and closed by driving of an actuator; a detection unit configured to separately detect presence or absence of an opening/closing operation of requesting opening/closing of the vehicle door by a user and presence or absence of a proximity state where a person exists in proximity of the vehicle door based on variation in an electrostatic capacity in the electrode; and a controller configured to drive the actuator when the opening/closing operation is detected by the detection unit even when an opening/closing request of the vehicle door from a device other than the detection unit is recognized and not to drive the actuator when the detection unit detects the proximity state.