An overhead door apparatus that is configured to be placed across an opening of a structure wherein the present invention will be adjacent the bottom edge of an overhead door secured to the opening when the overhead door is in a closed position. The present invention includes a body that is elongated in shape. The body includes an integrally formed first segment and second segment that are operable to create a cavity when the body is placed on the ground. Contiguously formed with the body are wing members wherein the wing members extend outward from the body and are configured to have a fastener journaled therethrough. The cavity of the body is configured to have the heating element of the present invention disposed therein wherein the heating element is substantially the length of the body. The body is manufactured from metal so as to conduct heat from the heating element.

Sanitary barrier systems and methods for preventing transmission of biological substances and protecting human health are provided. A retractable barrier system may include a first supporting member and a barrier film. The first supporting member may comprise a first attachment element configured to position the barrier system vertically in use. The barrier film may have a fixed edge and a free edge, wherein the fixed edge is connected to the first supporting member. The barrier film is extendible to a desired length in a use configuration and retractable back on the first supporting member in a storage configuration. The barrier system may include a retracting mechanism such as a crank or a spring-loaded roller. The barrier film may comprise a sanitary portion. The barrier system may be combined with stanchions or queue barriers to protect individuals waiting in lines. The barrier system may also be used to provide barrier inside a multi-person vehicle.

Sanitary barrier systems and methods for preventing transmission of biological substances and protecting human health are provided. A retractable barrier system may include a first supporting member and a barrier film. The first supporting member may comprise a first attachment element configured to position the barrier system vertically in use. The barrier film may have a fixed edge and a free edge, wherein the fixed edge is connected to the first supporting member. The barrier film is extendible to a desired length in a use configuration and retractable back on the first supporting member in a storage configuration. The barrier system may include a retracting mechanism such as a crank or a spring-loaded roller. The barrier film may comprise a sanitary portion. The barrier system may be combined with stanchions or queue barriers to protect individuals waiting in lines. The barrier system may also be used to provide barrier inside a multi-person vehicle.

The present invention provides a flexible and adjustable apparatus which is designed as a guard rail for toddler's protection. The apparatus comprising: an upper seat (1), an upper fix ring (2), an upper fix plate (3), an upper mounting base (4), a main body (5), two buttons (6), a switch bar (7), a upper base cover (8), a knob (9), a cloth winding tube (10), an upper sleeve (11) for the cloth winding tube, a fixing tooth (12) for the cloth winding tube, a base (13), a lower fixing plate (14), a gasket (15), a first washer (16) for the cloth winding tube, a bottom cover (17), a supporting rod (18), a first spring (19), a second spring (20), a lower mounting base (21), a pressure ring (22), a second washer (23) for the cloth winding tube, a bottom gasket (24), a mesh cloth (25), a handle rod (2), a handle upper sleeve (27), a handle lower sleeve (28), a spring limit (29), a pin (30), a third spring (31), a button for the handle rod (32), a linkage rod (33), a first button handle (34), a second button handle (35), a handle lower base (36), a handle upper base (37), a fourth spring (38), a first set of screws (39), a second set of screws (40), a third set of screws (41), a fourth set of screws (42), a fifth set of screws (43) and a fifth spring (44), which are all mechanically coupled with a main body component and a handle end component.

The present invention provides a flexible and adjustable apparatus which is designed as a guard rail for toddler's protection. The apparatus comprising: an upper seat (1), an upper fix ring (2), an upper fix plate (3), an upper mounting base (4), a main body (5), two buttons (6), a switch bar (7), a upper base cover (8), a knob (9), a cloth winding tube (10), an upper sleeve (11) for the cloth winding tube, a fixing tooth (12) for the cloth winding tube, a base (13), a lower fixing plate (14), a gasket (15), a first washer (16) for the cloth winding tube, a bottom cover (17), a supporting rod (18), a first spring (19), a second spring (20), a lower mounting base (21), a pressure ring (22), a second washer (23) for the cloth winding tube, a bottom gasket (24), a mesh cloth (25), a handle rod (2), a handle upper sleeve (27), a handle lower sleeve (28), a spring limit (29), a pin (30), a third spring (31), a button for the handle rod (32), a linkage rod (33), a first button handle (34), a second button handle (35), a handle lower base (36), a handle upper base (37), a fourth spring (38), a first set of screws (39), a second set of screws (40), a third set of screws (41), a fourth set of screws (42), a fifth set of screws (43) and a fifth spring (44), which are all mechanically coupled with a main body component and a handle end component.

The present discloses an automatically locked retractable protective door sill, including a retractable curtain assembly, a scroll assembly, an upper fixing base and a lower fixing base, a dial mechanism and a locking mechanism are arranged in the upper fixing base, the locking mechanism includes a hydraulic rod capable of retracting at a fixed time, and the hydraulic rod is connected to the dial mechanism; the sliding base is connected to the hydraulic rod, and the hydraulic rod drives the sliding base and drives the linkage base to reset automatically, so the automatic locking of the locking mechanism is achieved, and then the scroll assembly is locked. The whole device has a simpler structure and more convenient operation, the dial button may be manually pushed to return for locking after not reaching the set time, so as to prevent children opening the door sill during an automatic locking process.

The present discloses an automatically locked retractable protective door sill, including a retractable curtain assembly, a scroll assembly, an upper fixing base and a lower fixing base, a dial mechanism and a locking mechanism are arranged in the upper fixing base, the locking mechanism includes a hydraulic rod capable of retracting at a fixed time, and the hydraulic rod is connected to the dial mechanism; the sliding base is connected to the hydraulic rod, and the hydraulic rod drives the sliding base and drives the linkage base to reset automatically, so the automatic locking of the locking mechanism is achieved, and then the scroll assembly is locked. The whole device has a simpler structure and more convenient operation, the dial button may be manually pushed to return for locking after not reaching the set time, so as to prevent children opening the door sill during an automatic locking process.

A method receives a first image set depicting a merging zone, the first image set including first image(s) associated with a first timestamp; determines, using a trained first machine learning logic, a first state describing a traffic condition of the merging zone at the first timestamp using the first image set; determines, from a sequence of states describing the traffic condition of the merging zone at a sequence of timestamps, using a trained second machine learning logic, second state(s) associated with second timestamp(s) prior to the first timestamp of the first state using a trained backward time distance; computes, using a trained third machine learning logic, impact metric(s) for merging action(s) using the first state, the second state(s), and the merging action(s); selects, from the merging action(s), a first merging action based on the impact metric(s); and provides a merging instruction including the first merging action to a merging vehicle.

A retractable safety gate has a mesh fabric, a retracting mechanism connected with a first side of the mesh fabric, and a fastening mechanism connected with a second side of the mesh fabric. The retracting mechanism includes a bottom bracket, a fastening bracket, a first mounting tube, a locking assembly, and an energy storage assembly. The first mounting tube is rotatably mounted in the bottom bracket and the fastening bracket. The mesh fabric is wound around the first mounting tube. The locking assembly is mounted on the first mounting tube and selectively engages with the fastening bracket. The energy storage assembly is mounted in the first mounting tube and provides a resilient restoring force that drives the first mounting tube to wind the mesh fabric around the first mounting tube. The retractable safety gate rolls the mesh fabric up automatically and is convenient for use.

A retractable safety gate has a mesh fabric, a retracting mechanism connected with a first side of the mesh fabric, and a fastening mechanism connected with a second side of the mesh fabric. The retracting mechanism includes a bottom bracket, a fastening bracket, a first mounting tube, a locking assembly, and an energy storage assembly. The first mounting tube is rotatably mounted in the bottom bracket and the fastening bracket. The mesh fabric is wound around the first mounting tube. The locking assembly is mounted on the first mounting tube and selectively engages with the fastening bracket. The energy storage assembly is mounted in the first mounting tube and provides a resilient restoring force that drives the first mounting tube to wind the mesh fabric around the first mounting tube. The retractable safety gate rolls the mesh fabric up automatically and is convenient for use.