Tool
OwnerPeter Clarkinventor
Life of this patent
Estimating the term…
Abstract
A tool comprising a handle and an implement. The handle comprises an elongate portion having a first end and a second end, and the implement, removably attachable to the handle, comprises an elongate portion at a first end and a tool portion at a second end. In an embodiment of the invention, the handle has, at the first end, a male portion comprising a reducing taper extending from the elongate portion and terminating in a shoulder, and a threaded portion extending from the shoulder and having a cross sectional area lesser than that of the shoulder. In the same embodiment, the implement has, at the first end, a female portion comprising a reducing taper extending inwardly from the first end, a shoulder portion extending from the taper, and a threaded portion extending further inward from the shoulder.
Claims18
A tool suitable for use in digging, breaking concrete, cutting roots, loosening earth and stones, and similar operations which involve similar axial impact loads and similar non-axial impact loads, the tool comprising
- a shaft comprising a one-piece elongate portion having a first end and a second end, and
- a one-piece implement removably attachable to the shaft, comprising an elongate portion at a first end and a tool portion at a second end,
- wherein one of the one-piece, elongate portion of the shaft and the implement has, at its first end, a male portion comprising a reducing taper extending from the elongate portion and terminating at a shoulder, and a threaded portion extending from the shoulder and having a cross sectional area lesser than that of the shoulder, and
- the other of the one-piece, elongate portion of the shaft and the implement has, at its first end, a female portion comprising a reducing taper extending inwardly from the first end, a shoulder portion extending from the taper, and a threaded portion extending further inward from the shoulder, the shoulder portion being located longitudinally between the reducing taper and the threaded portion, wherein
- the male portion further comprises a second threaded portion extending from the taper toward the second end, and a fastener for cooperation with the second threaded portion.
A kit of parts for a tool suitable for use in digging, breaking concrete, cutting roots, loosening earth and stones, and similar operations which involve similar axial impact loads and similar non-axial impact loads, the tool comprising:
- a shaft comprising a one-piece, elongate portion and an implement, wherein one of the one-piece, elongate portion of the shaft and the implement has, at the first end, a male portion comprising a reducing taper extending from the elongate portion and terminating in a shoulder, and a threaded portion extending from the shoulder and having a cross sectional area lesser than that of the shoulder, and
- the other of the shaft and the implement has, at the first end, a female portion comprising a reducing taper extending inwardly from the first end, a shoulder portion extending from the taper, and a threaded portion extending further inward from the shoulder, the shoulder portion being located longitudinally between the reducing taper and the threaded portion, wherein
- the one-piece, elongate portion of the shaft and the implement area arranged to be removably attached to one another by mating the male and the female portions;
- and wherein
- the male portion further comprises a second threaded portion extending from the taper toward the second end, and a fastener for cooperation with the second threaded portion.
A one-piece tool implement suitable for use in digging, breaking concrete, cutting roots, loosening earth and stones, and similar operations which involve similar axial impact loads and similar non-axial impact loads, the tool comprising an elongate portion at a first end and a tool portion at a second end, wherein the elongate portion comprises a reducing taper terminating in a shoulder, and a threaded portion extending from the shoulder and having a cross sectional area lesser than that of the shoulder, in which the reducing taper, shoulder and threaded portion are on an internal face of a bore extending within the elongate portion, and in which the bore extends coaxially within the elongate portion;
- the tool portion further comprises a second threaded portion extending from the taper toward the second end, and a fastener for cooperation with the second threaded portion.
Dependencies are inferred from the claim text.