Turning tool with tip storage and retractable lever

• US 4,235,269 A
• Filed: 07/31/1978
• Issued: 11/25/1980
• Est. Priority Date: 07/31/1978
• Status: Expired due to Term

• Current Assignee: Hans Kraus
• Original Assignee: Hans Kraus
• Inventors: Kraus, Hans
• Primary Examiner(s): Simpson, Othell M.
• Assistant Examiner(s): Zatarga, J. T.
• Application Number:
  US05/929,331
• Time in Patent Office: 848 Days
• Field of Search: 145/61 L, 145/62, 145/63, 145/50 DA, 145/50 C
• US Class Current: 81/438
• CPC Class Codes: B25B 15/04 with ratchet action
• CPC Class Codes: B25F 1/02 with interchangeable or adjustable tool elements
• CPC Class Codes: B25G 1/005 for screwdrivers, wrenches or spanners with additional levers, e.g. for increasing torque
• CPC Class Codes: B25G 1/085 for screwdrivers, wrenches or spanners

Abstract

A screwdriver or like hand tool has interchangeable tips or bits storable in a groove or recess in a handle, and a foldable auxiliary lever for increased torque which is pivotable into another recess in the handle. The interchangeable tips or bits and the lever are magnetically releasibly retained in their recesses. Bits fit into and are magnetically retained in a socket at the end of a shaft rotatably mounted in the handle. The lever in its inwardly pivoted storage position keys the shaft to the handle. A reversible ratchet is provided. The tool may be a screwdriver or a tool for wrench sockets, screw extractors, or other types of bits or tips.

Claims

1. A turning tool comprising:

a handle rotatably mounted on a shaft having an axis,

a housing rotatably mounted on the shaft,

a ferrule coaxial with and secured to the shaft to rotate therewith,

releasable means in the housing cooperable with the secured ferrule to drive the shaft,

a first recess in the handle parallel to said axis and having an open end,

a plurality of interchangeable tips storable in the first recess in end-to-end relation,

handle magnet means protruding from the handle to partially overly said open end of the first recess and to contact and releasibly retain an end one of the tips adjacent the recess open end in position for manual grasping,

tip retaining means at the end of the shaft for releasibly holding a selected one of said tips,

a lever pivotally connected to the housing and pivotable between a retracted storage position and a radially extended service position, and

a second recess in the handle radially spaced from and parallel to the first recess to receive the lever in its retracted storage position wherein the lever is substantially within the recess,

said handle magnet means being positioned in the handle magnetically to engage and releasibly retain the lever in its retracted storage position.

2. A tool according to claim 1, wherein:

said handle magnet means extends diametrically of the handle with one end portion thereof releasibly retaining said lever and the other end portion thereof releasibly retaining said tip adjacent the first recess open end.

3. A tool according to claim 1 or claim 2, wherein:

the lever in its retracted storage position keys the housing to the handle, and in its radially extended service position releases the handle for rotation relative to the shaft.

4. A tool according to claim 1 or claim 2, wherein:

the respective tips have polygonal portions, and

said bit retainer comprises a non-magnetic sleeve at the end of the shaft defining a bit-receiving recess of polygonal cross-section, and shaft magnet means adjacent the sleeve to releasibly retain a bit.

5. A tool according to claim 1 or claim 2, wherein:

said first recess is undercut with inwardly extending lips to retain said tips.

6. A tool according to claim 1 or claim 2, wherein:

the handle has a reduced portion defining a finger space adjacent said first recess open end to provide for manual grasping of said end one of the tips.

7. A tool according to claim 6, wherein:

said second recess has an open end from which an outer end portion of the lever extends when the lever is in said retracted storage position, and

said finger space defined by the handle reduced portion is adjacent to the second recess open end to provide for manual grasping of the lever outer end portion.

8. A tool according to claim 1, wherein:

upon manual movement of said end one of the tips outward from the open end of the first recess said end one of said tips magnetically attracts the next adjacent tip to move the latter into the end position for manual grasping.

9. A tool according to claim 5, wherein:

upon manual movement of said end one of the tips outward from the open end of the first recess said end one of said tips magnetically attracts the next adjacent tip to move the latter into the end position for manual grasping.