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US 12,384,015 B2Granted
Telescopic wrench
AssigneeYi-Fu Chen
InventorsYi-Fu Chen, He-Qian Chen
Life of this patent
Estimating the term…
Abstract
A telescopic wrench includes an outer tube, an outer sleeve, and an inner rod. The first hole of the outer sleeve ring is fitted onto the outer tube, and the second hole of the outer sleeve provides peripheral contact with the rod section of the inner rod. The outer sleeve forms an external auxiliary fitting structure with the inner rod and outer tube. The telescopic wrench provides an improvement over known structures that are prone to loosening and noise during use. The telescopic wrench enhances the structural strength when subjected to operating forces.
Claims9
A telescopic wrench comprising:
- an outer tube having a passage defined axially therein, the outer tube having a first end and a second end on two opposite ends of the outer tube, an outer sleeve having a first hole and a second hole which is in communication with the first hole, the first hole of the outer sleeve being fitted to a first end of the outer tube, the outer sleeve having an abutment surface formed between the first hole and the second hole, the abutment surface being in contact with an end face of the first end of the outer tube, an inner rod having a work end and a rod section connecting to the work end, the rod section having an annular groove with which an elastic ring is engaged, the rod section being slidably engaged with the passage and the second hole, the elastic ring being compressed by contact with an inner periphery of the passage, the work end being exposed beyond the first end of the outer tube.
A telescopic wrench comprising:
- an outer tube having a passage defined axially therein, the outer tube having a first end and a second end on two opposite ends of the outer tube, an accommodating hole defined in the first end of the outer tube and communicating with the passage, an end part including an insertion section and an external section formed on two opposite ends thereof, the insertion section inserted into the accommodating hole of the outer tube, the external section is located at an outside of the first end of the outer tube, a through hole defined through the insertion section and the external section, the through hole communicates with the passage, an inner rod having a work end and a rod section connecting to the work end, the rod section being slidably engaged with the passage and the through hole, an elastic ring being compressed by contact with an inner periphery of the passage, the work end being exposed beyond the external section of the end part.
Dependencies are inferred from the claim text.