Sealing arrangement for a tightening tool
AssigneeAtlas Copco Industrial Technique AB
InventorUlf Mikael Eriksson
Life of this patent
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Abstract
A handheld electric tightening tool includes a housing and a sealing arrangement. The sealing arrangement is adapted to seal a first portion of the housing from a second portion of the housing and includes a sealing element and a spring. The sealing element includes a first portion adapted to bear against a shoulder formed in the housing, and a second portion adapted to bear against a portion of an outer surface of a rotating axle of the tool. The spring is adapted to at a first end bear against a shoulder formed in the sealing element and at a second end bear against a supporting element arranged on the axle, such that a force is exerted on the sealing element urging the sealing element against the shoulder formed in the housing.
Claims14
A handheld electric tightening tool comprising:
- a housing;
- and
- a sealing arrangement,
- wherein the sealing arrangement is adapted to seal a first portion of the housing from a second portion of the housing, and comprises a sealing element and a spring,
- wherein the sealing element comprises a first portion adapted to bear against a shoulder formed in the housing, and a second portion adapted to bear against a portion of an outer surface of a rotating axle of the tool, the first portion and the second portion being provided at different positions along an axial direction of the rotating axle,
- wherein the spring is adapted to, at a first end, bear against a shoulder formed in the sealing element and, at a second end, bear against a supporting element arranged on the rotating axle, such that a force is exerted on the sealing element urging the sealing element against the shoulder formed in the housing,
- wherein the sealing element comprises an intermediate portion arranged between the first portion and the second portion of the sealing element, and
- wherein the intermediate portion is a resilient portion such that the second portion of the sealing element is biased against the outer surface of the rotating axle.
Dependencies are inferred from the claim text.