Patent ID: 11920890
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A spring-loaded swiveling tonfa comprising:
a main bar having a cavity, wherein the sides of the cavity are formed with a circular groove, and wherein a bottom surface of the cavity is formed with one or more notches;
a handle elongated between a top end and a bottom end, wherein the bottom end of the handle is fitted in the circular groove of the main bar so as to allow swiveling motion of the main bar about the elongated axis of the handle, wherein the handle comprises:
a handle bar;
a locking bar inside the handle bar configured to move between the top and bottom ends of the handle, wherein the locking bar comprises:
an angled portion on a predetermined side portion of the locking bar; and
a locking end protruding at one end of the locking bar;

a spring inside the handle bar configured to apply pressure on the locking end towards the bottom surface of the circular hole having the one or more notches;
a push button having one end making contact with the angled portion of the locking bar and the other end sticking out of a hole of the handle bar so as to accommodate depression by hand;
a circular protrusion radially extending out at near the bottom end of the handle bar, wherein the circular protrusion is fitted inside the circular groove of the main bar; and

wherein, when the push button is not depressed, the locking end is secured in one notch due to the pressure from the spring so as to prevent swiveling motion of the main bar around the handle, and
wherein, when the push button is depressed, depression of the push button causes the locking bar to move against the spring to reduce the pressure of the spring so as to disengage the locking end out of the notch and to enable the main bar to freely rotate relative to the handle for as long as the button remains pressed.