Abstract: A sap collection method and system, the system comprising at least a first line of a first diameter, at least a second line of a second diameter, the second diameter being at most equal to the first diameter; and a connection in fluid communication between the second line and the first line for sap collection from the first line to the second line; wherein the connection comprises a material of walls of an opening in a wall of the first line fused with a material of an end of the second line and for a connecting part engaging an end of the second line.

Abstract: A system for removing sap from a plurality of trees includes a main tube supported at least in part by a plurality of drain tubes without the use of a spinal support. The main tube as supported can negotiate a path between a plurality of trees. The drain tubes are adapted to be supported at the trees. The drain tubes are in fluid communication with the main tube for removing sap through a drain tube into the main tube.

Abstract: A system for removing sap from a plurality of trees includes a main tube supported at least in part by a plurality of drain tubes without the use of a spinal support. The main tube as supported can negotiate a path between a plurality of trees. The drain tubes are adapted to be supported at the trees. The drain tubes are in fluid communication with the main tube for removing sap through a drain tube into the main tube.

Abstract: A geothermal heat pump has a pump. A tubing conveys a fluid from the pump and adapted to transfer energy between the fluid and the ambient environment as the fluid travels through the tubing. The tubing has a high thermal conductivity.

Abstract: A torque-transmitting device including a casing inside which a gearwheel is mounted such that it can move by means of at least one rolling bearing housed in a side wall of the casing, the bottom of the casing being shaped to form an oil reserve in which part of the wheel is intended to be immersed, the casing additionally including an oil recuperator wiper arranged in the side wall housing the rolling bearing, above the latter. The oil recuperator wiper includes removable means of attachment to the casing, these means of attachment being accessible from outside the casing.