Screwing Tool
OwnerYen-Chia Huanginventor
Life of this patent
Estimating the term…
Abstract
A screwing tool includes a handle, a tubular member fitted inside the handle, an inner sleeve mounted slidably inside the tubular member, an elongated bit mounted slidably inside the inner sleeve, at least one retaining member disposed in a passage of the inner sleeve, an actuating member coupled to permit the inner sleeve to slide therewith, and a biasing member disposed to bias the inner sleeve to a first position. When the inner sleeve is in the first position, the elongated bit is retained by the retaining member. When the inner sleeve is moved to a second position against a biasing force of the biasing member, the elongated bit may slide relative to the handle.
Claims9
A screwing tool comprising:
- a handle defining therein an elongated cavity along the longitudinal axis;
- a tubular member configured to be immovably fitted in said elongated cavity, and having an inner peripheral surface which defines therein a bore extending along a longitudinal axis, and which has a guiding surface region;
- an inner sleeve which is slidably mounted on said guiding surface region along the longitudinal axis and displaceable between a first position and a second position, said inner sleeve having an inner end segment disposed inside said bore, and an outer end segment disposed outwardly of said bore, said inner sleeve having a through hole along the longitudinal axis and at least one passage extending radially therethrough and proximate to said outer end segment;
- an elongated bit which is configured to be slidably and non-rotatably received in said through hole, and which includes two opposite ends opposite to each other along the longitudinal axis, and an elongated body between said two opposite ends;
- at least one retaining member which has an abutted end and a retaining end radially opposite to said abutted end, and which is disposed in said passage to be movable radially between an inward position, where said inner sleeve is in the first position and said retaining end is in pressing engagement with said elongated body, to prevent sliding movement of said elongated bit, and an outward position, where said inner sleeve is in the second position and said retaining end is retractable in said passage to permit the sliding movement of said elongated bit;
- an actuating member which is coupled to said outer end segment of said inner sleeve to permit said inner sleeve to slide with said actuating member along the longitudinal axis between a locked position corresponding to the first position, and an unlocked position corresponding to the second position;
- and
- a biasing member disposed on said inner sleeve to bias said inner sleeve to the first position,
- wherein said inner peripheral surface of said tubular member further has a confronting surface region, which is displaced from said guiding surface region to confront said retaining member, and which includes
- a first zone configured to be in pressing engagement with said abutted end when said inner sleeve is in the first position, and
- a second zone which is configured to confront said abutted end when said inner sleeve is in the second position, and which has a larger dimension than said first zone to permit said retaining end to be retracted in said passage in response to the sliding movement of said elongated bit.
Dependencies are inferred from the claim text.