Screw holding device for screwdrivers

• US 4,581,963 A
• Filed: 07/03/1985
• Issued: 04/15/1986
• Est. Priority Date: 07/03/1985
• Status: Expired due to Fees

• Current Assignee: Han K. Kim
• Original Assignee: Han K. Kim
• Inventors: Kim, Han K.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Zatarga, J. T.
• Application Number:
  US06/751,516
• Time in Patent Office: 286 Days
• Field of Search: 81/452, 81/451, 81/458, 81/454
• US Class Current: 81/452
• CPC Class Codes: B25B 23/101 for hand-driven screw-drivers B25B23/105 takes precedence

Abstract

A plurality of devices are disclosed for supporting threaded screws in a plane normal to a surface into which the screws are threaded. Each embodiment includes means for supporting the shank of the screw at points intermediate the ends thereof rather than only at the head thereof. The means is resiliently expandable to permit passage of the head of the screw past the supporting means for disengagement of the device after the screw has obtained substantial threaded purchase with an engaged structure.

Claims

1. An improved screw holding device for screwdrivers comprising:

a unitary hollow tubular sleeve having a first proximal end and a second distal end;

said sleeve including a cylindrical segment extending from said proximal end and terminating in a tapered portion, a cylindrical segment of reduced diameter extending distally from said tapered portion towards the distal end and terminating in a flared portion; and

a third cylindrical portion of diameter corresponding to that of said first portion extending to said distal end;

said cylindrical portion of reduced diameter having a plurality of elongated slots therein extending to said tapered and flared portions to form a plurality of parallel radially expandable resilient ribs.

2. In a combination screwdriver and screw holding device therefore, said screw holding device including a hollow tubular sleeve slidably disposed upon an elongated shank member of said screwdriver, the improvement comprising:

said sleeve including;

a unitary hollow tubular sleeve having a first proximal end and a second distal end;

said sleeve including a cylindrical segment extending from said proximal end and terminating in a tapered portion, a cylindrical segment of reduced diameter extending distally from said tapered portion towards the distal end and terminating in a flared portion; and

a third cylindrical portion of diameter corresponding to that of said first portion extending to said distal end;

said cylindrical portion of reduced diameter having a plurality of elongated slots therein extending to said tapered and flared portions to form a plurality of parallel radially expandable resilient ribs;

said first and third cylindrical portions having an internal diameter corresponding to the widest portion of said screwdriver shank, said second mentioned tubular portion of reduced diameter being resiliently expandable to permit movement over said widest portion of said screwdriver shank; and

a screw having a threaded shank and a head portion at one end thereof, said shank having an outer diameter corresponding to the inner diameter of said elongated portion of reduced diameter whereby upon the introduction of said screw into the proximal end of said sleeve, said threaded shank of said screw may be positioned within said portion of reduced diameter to be supported in coaxial relationship therewith during the driving thereof by said screwdriver.