Method of making ratchet screwdriver
View Patent ↗A ratchet screwdriver and method of making same wherein there is a handle and there are a ratchet gear and pawls inside the handle. An adjuster is inside the handle and is movable by a tool extending into the handle for positioning the adjuster relative to the gear and thereby eliminating play between the gear and the handle. Ball bearings are interposed between the handle and the gear and the bearings rotatably support the gear and transmit the anti-play forces that act on the gear.
1. A method of making a ratchet screwdriver, comprising the steps of:
assembling a handle;
assembling a ratchet assembly, the ratchet assembly including a ratchet gear and ratchet pawls along an axis and for ratchet action between said handle and said gear, the ratchet assembly further including an adjuster disposed in a threaded axial bore of the ratchet assembly;
inserting a plug into said adjuster and radially expanding said adjuster into screw-thread tight relationship with said handle for securing said adjuster in axially set position relative to said handle;
securing the ratchet assembly to the handle, the adjuster being disposed proximal to the handle; and
rotating the adjuster to urge the adjuster against the handle, wherein relative axial movements between the handle and the ratchet assembly is reduced in response to urging the adjuster against the handle.
2. The method of making a ratchet screwdriver, as claimed in claim 1 , including the step of:
placing a friction-relieving bearing in said handle to serve as said surfaces.
3. The method of making a ratchet screwdriver, as claimed in claim 1 , including the step of:
placing a ball bearing in said handle to serve as said surfaces and to minimize both axial and radial movement between said handle and said adjuster.
4. The method of making a ratchet screwdriver, as claimed in claim 3 , including the steps of:
providing said gear with two terminal ends and placing one said ball bearing at each said terminal end of said gear.