A trailer dolly can include various features to be adjustable between a manual configuration and a vehicular towing configuration. In the manual configuration, a user can manually maneuver the trailer dolly to position the trailer, such as by using one or more retractable handles. Where the user desires to maneuver the trailer with a vehicle, the trailer dolly can be adjusted to the vehicle towing configuration. In an example, the trailer dolly can be coupled to the vehicle with a second hitch attached to the trailer dolly, the second hitch located distally along the tow bar with respect to the trailer hitch supporting the trailer load. Accordingly, the trailer dolly can be used for both manual and vehicular applications and the user can transition between the manual and vehicular configurations while the trailer is hitched to the trailer dolly.

A collapsible hunting blind apparatus comprises a floor member, a roof member, and a plurality of walls. The roof member includes angled surfaces and side walls coupled to the angled surfaces. The plurality of walls are hingedly couplable to the floor member such that the plurality of walls hingedly fold inward toward opposite walls and atop the floor member. The roof member is couplable to the floor member while the plurality of walls are folded atop the floor member.

A collapsible hunting blind apparatus comprises a floor member, a roof member, and a plurality of walls. The roof member includes angled surfaces and side walls coupled to the angled surfaces. The plurality of walls are hingedly couplable to the floor member such that the plurality of walls hingedly fold inward toward opposite walls and atop the floor member. The roof member is couplable to the floor member while the plurality of walls are folded atop the floor member.

A sensor device for a towing vehicle coupling or forming part of a towing vehicle coupling with which a trailer vehicle can be coupled to a towing vehicle wherein the towing vehicle coupling has a coupling element for releasably coupling a coupling mating element, which can be secured to the towing vehicle and the trailer vehicle, and when coupled together can rotate relative to one another about at least one joint rotational axis, forming a joint, where the sensor device has a follower mounted on a bearing body such that it can rotate relative to the coupling element about a follower rotational axis; can be rotatably carried about the follower rotational axis, by the rotation of the coupling mating element about the at least one joint rotational axis, to sense a rotation of the coupling mating element relative to the coupling element about the at least one joint rotational axis, and the sensor device has at least one sensor for sensing a respective rotational position of the follower relative to the bearing body in relation to the follower rotational axis.

A sensor device for a towing vehicle coupling or forming part of a towing vehicle coupling with which a trailer vehicle can be coupled to a towing vehicle wherein the towing vehicle coupling has a coupling element for releasably coupling a coupling mating element, which can be secured to the towing vehicle and the trailer vehicle, and when coupled together can rotate relative to one another about at least one joint rotational axis, forming a joint, where the sensor device has a follower mounted on a bearing body such that it can rotate relative to the coupling element about a follower rotational axis; can be rotatably carried about the follower rotational axis, by the rotation of the coupling mating element about the at least one joint rotational axis, to sense a rotation of the coupling mating element relative to the coupling element about the at least one joint rotational axis, and the sensor device has at least one sensor for sensing a respective rotational position of the follower relative to the bearing body in relation to the follower rotational axis.

A trailer braking system having a surge component used in combination with an electric over hydraulic brake system. The surge component includes a sliding member with a magnetic sensor for detecting trailer deceleration, the sliding member providing an initial pressurization of the hydraulic system. A trailer mounted electrical circuit detects when the tow vehicle brakes are applied and includes a microcontroller for detecting the speed of deceleration provided by the magnetic sensor. A trailer mounted electric motor receives a signal from the circuit board to vary pressure to the brakes in accordance with the speed of deceleration.

A trailer braking system having a surge component used in combination with an electric over hydraulic brake system. The surge component includes a sliding member with a magnetic sensor for detecting trailer deceleration, the sliding member providing an initial pressurization of the hydraulic system. A trailer mounted electrical circuit detects when the tow vehicle brakes are applied and includes a microcontroller for detecting the speed of deceleration provided by the magnetic sensor. A trailer mounted electric motor receives a signal from the circuit board to vary pressure to the brakes in accordance with the speed of deceleration.

A turbomachinery power generation station can be too large and heavy for transportation. Thus, embodiments are disclosed for separating a full power generation station into road-ready turbine and generator trailers, as well as realigning and recoupling the trailers for operation of the power generation station at a desired destination.

A turbomachinery power generation station can be too large and heavy for transportation. Thus, embodiments are disclosed for separating a full power generation station into road-ready turbine and generator trailers, as well as realigning and recoupling the trailers for operation of the power generation station at a desired destination.

A rotatable trailer bed includes a frame, a trailer bed, a turntable swivel assembly, and a plurality of swivel casters. The frame includes a bed section, a hitch section, and two wheel sets. The hitch section is adjacently connected a front end of the bed section. The two wheel sets is rotatably mounted to the bed section. The plurality of swivel casters is mounted to the bed section is perimetrically positioned around the bed section. The trailer bed is rotatably mounted to the bed section through the turntable swivel assembly as the plurality of swivel casters maintain the balance and level of the trailer bed.