A slip coupling for a work machine includes a main clutch in the form of a friction-based and spring-operated slip clutch. The slip coupling further includes an auxiliary clutch configured to maintain a pre-set spring-induced clamping force on friction plates of the slip clutch, when the slip coupling rotates in a forward direction, and further configured to be able to increase the spring-induced clamping force, when the slip coupling rotates in a reverse rotational direction. The increase of the clamping force is enabled by the fact that one of two auxiliary clutch parts is axially movable when the slip coupling rotates in the reverse rotational direction, the axial movement actuating an increase in pre-tension of mechanical spring or springs of the slip clutch. A work machine such as a combine harvester equipped with the slip coupling is also described.

A manhole base assembly and a method for making the same employ a non-cylindrical, low-volume concrete base that is fully lined to protect the concrete against chemical and physical attack while in service. This lined concrete manhole base assembly may be readily produced using a modular manhole form assembly which can be configured for a wide variety of geometrical configurations compatible with, e.g., varying pipe angles, elevations and sizes. The form assembly is configurable to provide any desired angle and elevation for the pipe apertures to interface with various underground systems, and can be formed on-site to facilitate compatibility with existing structures. The assembly provides for flexible, modular construction of a wide variety of lined manhole base assemblies at minimal cost, reduced concrete consumption and reduced operational complexity. The modular nature of the production form assembly also facilitates reduced inventory requirements when various manhole base assembly geometries are needed.

A garbage guard apparatus is disclosed herein. In various aspects, the garbage guard apparatus may be mounted in a sump comprising an outflow pipe with an outflow pipe entrance that conveys water from the sump, and the sump may be accessed through a manhole entrance of diameter d. The garbage guard apparatus includes multiple panels, with each panel of the multiple panels having panel width W that is less than diameter d of the manhole entrance to allow for passage of each panel through the manhole entrance into the sump, in various aspects. In various aspects flange is formed on each longitudinal side of each panel with all flanges being symmetric to allow a flange of one panel to mate with any flange of any other panel. The panels when flangeably secured to one another within the sump form a panel assembly, in various aspects. The panel assembly so formed is then attached to the sidewall of the sump about the outflow pipe entrance of the outflow pipe with a lower end below an invert of the pipe entrance and an upper end above a crown of the pipe entrance, in various aspects. When so attached to the sidewall of the sump, the panel assembly defines a passage and the water passes from the sump around the lower end of the panel assembly into the passage and then into the pipe entrance of the outflow pipe with buoyant garbage being retained within the sump by the panel assembly, in various aspects. Related kits, methods of use, and methods of assembly are also disclosed herein. This Abstract is presented to meet requirements of 37 C.F.R. 1.72(b) only. This Abstract is not intended to identify key elements of the apparatus and related kits and methods of use disclosed herein or to delineate the scope thereof.

A garbage guard apparatus is disclosed herein. In various aspects, the garbage guard apparatus may be mounted in a sump comprising an outflow pipe with an outflow pipe entrance that conveys water from the sump, and the sump may be accessed through a manhole entrance of diameter d. The garbage guard apparatus includes multiple panels, with each panel of the multiple panels having panel width W that is less than diameter d of the manhole entrance to allow for passage of each panel through the manhole entrance into the sump, in various aspects. In various aspects flange is formed on each longitudinal side of each panel with all flanges being symmetric to allow a flange of one panel to mate with any flange of any other panel. The panels when flangeably secured to one another within the sump form a panel assembly, in various aspects. The panel assembly so formed is then attached to the sidewall of the sump about the outflow pipe entrance of the outflow pipe with a lower end below an invert of the pipe entrance and an upper end above a crown of the pipe entrance, in various aspects. When so attached to the sidewall of the sump, the panel assembly defines a passage and the water passes from the sump around the lower end of the panel assembly into the passage and thence into the pipe entrance of the outflow pipe with buoyant garbage being retained within the sump by the panel assembly, in various aspects. Related kits, methods of use, and methods of assembly are also disclosed herein. This Abstract is presented to meet requirements of 37 C.F.R. 1.72(b) only. This Abstract is not intended to identify key elements of the apparatus and related kits and methods of use disclosed herein or to delineate the scope thereof.

A manhole base assembly and a method for making the same employ a non-cylindrical, low-volume concrete base that is fully lined to protect the concrete against chemical and physical attack while in service. This lined concrete manhole base assembly may be readily produced using a modular manhole form assembly which can be configured for a wide variety of geometrical configurations compatible with, e.g., varying pipe angles, elevations and sizes. The form assembly is configurable to provide any desired angle and elevation for the pipe apertures to interface with various underground systems, and can be formed on-site to facilitate compatibility with existing structures. The assembly provides for flexible, modular construction of a wide variety of lined manhole base assemblies at minimal cost, reduced concrete consumption and reduced operational complexity. The modular nature of the production form assembly also facilitates reduced inventory requirements when various manhole base assembly geometries are needed.

A sealing system for sealing a joint of a structure, including a first section having an inner wall, an outer wall and a contact surface extending therebetween, a second section having an inner surface, an outer surface and a contact extending therebetween, the contact surfaces of the first and second sections being in contact with each other, thereby forming a joint. A void is defined by a portion of the contact surface of the first section and a portion of the contact surface of the second section, a port extends from one of the inner surface and the outer surface of the first section to the annular void, and liquid grout disposed in the void and the port.

A manhole base assembly and a method for making the same employ a non-cylindrical, low-volume concrete base that is fully lined to protect the concrete against chemical and physical attack while in service. This lined concrete manhole base assembly may be readily produced using a modular manhole form assembly which can be configured for a wide variety of geometrical configurations compatible with, e.g., varying pipe angles, elevations and sizes. The form assembly is configurable to provide any desired angle and elevation for the pipe apertures to interface with various underground systems, and can be formed on-site to facilitate compatibility with existing structures. The assembly provides for flexible, modular construction of a wide variety of lined manhole base assemblies at minimal cost, reduced concrete consumption and reduced operational complexity. The modular nature of the production form assembly also facilitates reduced inventory requirements when various manhole base assembly geometries are needed.

A hole former for use in casting a gasket within an opening of a structure of the type used in underground water systems, such as a manhole. The hole former includes a body defining a central axis and an outer peripheral surface, with at least one gasket retention element projecting radially outwardly from the outer peripheral surface to interface with a corresponding locating feature of the gasket. In this manner, axial shifting or movement of the gasket with respect to the hole former is restricted, thereby positively locating and retaining the gasket on the hole former before and during the casting process. The hole former may have a compound curvature, with the gasket retained around the periphery of the hole former in a compound curved configuration.

A manhole base assembly and a method for making the same, in which a non-cylindrical, low-volume concrete base is fully lined to protect the concrete against chemical and physical attack while in service. This lined concrete manhole base assembly may be readily produced using a modular manhole form assembly which can be configured for a wide variety of geometrical configurations compatible with, e.g., varying pipe angles, elevations and sizes. The form assembly is configurable to provide any desired angle and elevation for the pipe apertures using existing, standard sets of form assembly materials, and may also be used in conjunction with industry-standard cylindrical casting jackets for compatibility with existing casting operations. The resulting system provides for flexible construction of a wide variety of lined manhole base assemblies at minimal cost, reduced concrete consumption and reduced operational complexity. The modular nature of the production form assembly also facilitates reduced inventory requirements when various manhole base assembly geometries are needed.

A sealing system for sealing a joint of a structure, including a first section having an inner wall, an outer wall and a contact surface extending therebetween, a second section having an inner surface, an outer surface and a contact extending therebetween, the contact surfaces of the first and second sections being in contact with each other, thereby forming a joint. A void is defined by a portion of the contact surface of the first section and a portion of the contact surface of the second section, a port extends from one of the inner surface and the outer surface of the first section to the annular void, and liquid grout disposed in the void and the port.