Interchangeable locking implement handle

Details Interchangeable locking implement handle Interchangeable locking implement handle

1995-02-21

1997-02-18

Melius, Terry Lee

Joints and connections

Interfitted members

Radially interposed shim or bushing

403310, 403343, 5640005, 5640019, 56DIG18, 151431, 294 57, B25G 320

Patent

active

056035845

ABSTRACT:
A threaded connector is disclosed for attaching a handle to a tool head, such as a rake or a broom. The threaded connector may include a central cap or plug and a plurality of opposed wings extending radially outwardly therefrom. The wings are in the form of hollow partial cylinders and are hingeably attached to the cap. The cap is positioned on the end of the handle and the wings are folded downwardly and inwardly to engage the handle. Each wing includes partial thread segments that register to form a full thread when the wings are folded together. The full thread has a shallow taper such that tightening of the connector within a mating socket in a tool head causes the connector to bind or wedge itself into the socket. To provide additional resistance to loosening a locking ring has longitudinal mortices which key into aligned rabbets in the connector and in the socket.

REFERENCES:
patent: 2116375 (1938-03-01), Aubitz
patent: 2836918 (1958-06-01), Pula et al.
patent: 3003149 (1961-10-01), Grashow
patent: 3380097 (1968-04-01), Pharris
patent: 4068346 (1978-01-01), Binder
patent: 5161278 (1992-11-01), Tomm

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