Guide for guiding an inflatable bladder within a pipeline and a bladder assembly
AssigneeBoldan Oy
InventorJoni Tukiainen
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a guide (1) for guiding an inflatable bladder (2) within a pipeline (3). The guide (1) comprises roller units (6) for supporting the guide (1) against an inner wall of a pipeline (3), at least one of which roller units (6) being supported on a roller bracket (5), in turn arranged on an attachment rail (7) allowing said roller bracket (5) to be movable between different positions on the bracket rail (7), so as to accommodate for various pipeline (3) dimensions. At least one roller unit has a limited travel (T), while a biasing member (8) is configured to bias the roller unit (6) with a limited travel (T) outwardly with respect to the central axis (C) along the limited travel (T). A bladder assembly (10) is also disclosed.
Claims14
A guide for guiding an inflatable bladder within a pipeline, comprising
- a guide body attachable to the inflatable bladder, the guide body defining a central axis;
- two or more roller brackets arranged on the body, each roller bracket being equipped with a roller unit for supporting the guide against an inner wall of a pipeline,
- wherein the guide further comprises an attachment rail extending in a direction transverse with respect to the central axis,
- wherein at least one roller bracket is arranged on the attachment rail, and the roller bracket arranged on the attachment rail has:
- a fixed configuration in which said roller bracket is releasably fixed with respect to the attachment rail and
- a released configuration, in which said roller bracket is movable between different positions on the bracket rail,
- wherein at least one roller unit is coupled to its respective roller bracket with a limited travel extending in a direction transverse to the central axis,
- wherein the guide further comprises a biasing member configured to bias the roller unit with a limited travel outwardly with respect to the central axis along the limited travel,
- wherein the attachment rail is arranged as
- a slot on the guide body, wherein the roller bracket arranged on the attachment rail comprises a protrusion having a cross-sectional shape corresponding to that of the slot, and the protrusion is received within said slot, or
- a protrusion on the guide body, wherein the roller bracket arranged on the attachment rail comprises a slot having a cross-sectional shape corresponding to that of the protrusion, and the protrusion is received within said slot.
Dependencies are inferred from the claim text.