Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2593622 A
Publication typeGrant
Publication dateApr 22, 1952
Filing dateFeb 4, 1949
Priority dateFeb 4, 1949
Publication numberUS 2593622 A, US 2593622A, US-A-2593622, US2593622 A, US2593622A
InventorsStanelle Albert L
Original AssigneeStanelle Albert L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Screw holding screw driver
US 2593622 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

April 1952 A. L. STANELLE 2,593,622

SCREW HOLDiNG SCREW DRIVER Filed F 4 1949 ALBERT STANELLE ?atented Apr. 22, 1952 2,593,622 scanw HOLDING scnnw nerves Albert L. Stanelie, Milwaukee, Wis.

Application February 4, 1949, Seri'ai No. 7%516 1 Claim. 1

My invention relates to screw drivers and more particularly to a type of screw driver that will retain contact with the screw.

An object of my invention is to construct a screw driver that will provide frictional resistance with the vertical walls of the slot in a screw head, thereby permitting the operator to place the screw on the screw driver and in position in hard to get at places.

Another object of my invention is to construct the head of a screw driver in a manner to provide resiliency at all times so that the contact points or blades are urged apart from one another.

Still another object of my invention is to construct a screw driver head in which the contact blades may be easily inserted into the slot or grooves of a screw head.

A still further object of my invention is to construct a device of the character described that is practical, economical to manufacture and is efficient for the purpose for which it is inended.

It is manifest to anyone familiar with the art of using screw drivers that it is sometimes difficult to place a small screw or bolt in position, and it is therefore advantageous to support the screw by means of a screw driver when placing the screw into a remote corner or position in a congested assembly. With the device as de scribed it is a simple task to insert the blades of the screw driver head into a slot of a screw and retain the screw in position on the screw driver head by means of frictional contact of the blades with the vertical walls of the slot, thereby eliminating the necessity of any mechanical accessories on the screw driver for retaining the screw onto the head.

Other and further objects of my invention more apparent as the description proceeds and when taken in conjunction with the drawings in which Figure l is a perspective side View of the assembled screw driver.

Figure 2 is a side view or" the head of the screw driver as shown in Figure 1.

Figure 3 is a front View of the head or" a screw driver as shown in Figure 2.

Figure 4 is a fragmentary perspective View of a screw driver head and screw, illustrating the manner employed to insert the blades into the slot of a screw, and

Figure 5 is a fragmentary view of the blades of the screw driver head inserted into the slot of the screw.

Similar characters of reference indicate corresponding parts throughout the several views, andreferring now to the same, the character I!) shows a screw driver stem provided with a conventional type of handle H fastened in any serviceable manner.

The depending end of the stem Ii] terminates into a head which consists of an annular portion 2 having an aperture [3 extending through its entire cross-section. The lower end of the annular portion l2 extends outward to form two blades shown as I4 and I4 and shown separated from one another by means of a slot or space l5 extending from the extreme outer end of the blade I4 to the aperture 13. The outer peripheral surface of the annular portion I2 terminates into an arcuate contour shown as 15 at the junction with the blades l4 and I l, thereby providing resiliency for the blades.

Obviously, the length of the blades or their cross-section, or the diameter of the slot l5 may vary to suit the particular type of screw driver and the purpose for which it is intended.

The slot l5 provides a space between the blades M and I l and the arcuate construction of the head supporting the blade provides a means of urging the blades away from one another to a distance equivalent to the width of the slot.

When the tips or extreme ends of the blades are inserted into a slot I! in the screw shown as iii in Figures 4 and 5, the outside diameter of the spread blades being greater than the width of the slot I? will cause the blades l4 and M to be forced toward one another, thereby narrowing the diameter of the slot or space l5 between the blades and causing the outer surface of the blades to frictionally engage the vertical walls of the slot I! in the screw.

The arcuate contour and construction of the head provides resiliency to cause the spreading inclination of the blades.

In Figure 4 I illustrate the manner employed for engaging the blades H!- and I4 into the slot li. By forcing the blade M against the shoulder of the slot i! in the screw, it will cause the space :5 to narrow, thereby permitting the other blade !4 to enter the slot ll when the screw driver head is brought into alignment with the screw shown as l8.

In the chosen embodiments of my invention there are present many features not heretofore disclosed in the prior art, and although I have shown a specific construction and specific contour and arrangement, I am fully cognizant or" the fact that many changes may be made with- 3 out afiecting their operativeness, and without departing from the spirit of my invention or the scope of the appended claim.

Having thus described my invention, what I claim and desire to secure by Letters Patent in the United States is:

A device of the character described, said device being fabricated of a single piece of material shaped to define an elongated cylindrical stem, one end of said stem including a head, said head being flattened and enlarged and being provided with a centrally disposed aperture, said head having a pair of outwardly extending, resilient blades spaced parallel to each other and spaced apart from one another defining a slot extending from said aperture to the ends of said blades, said slot being arranged in alignment with the longitudinal axis of said stem, said blades being mounted for movement toward and away from each other, the outer periphery of said head extending outwardly and arcuately so that there is provided a gradual diminishing of the cross-sectional area of the head terminating 4 in said blades. the distance from the aperture to the outer edges of the head being greater than the thickness of the major portions of the blades, the longitudinal axis of said aperture being arranged at right angles to the longitudinal axis of said slot.

ALBERT L. STANELLE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS France Apr. 1, 1935

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US518472 *Apr 17, 1894 Screw-driver
US762280 *Nov 3, 1902Jun 14, 1904Samuel E CondonScrew-driver.
US1013500 *Dec 10, 1910Jan 2, 1912Joseph LeeScrew inserter and remover.
US1385915 *Jan 5, 1921Jul 26, 1921Manuel HardeyScrewdriver
FR783389A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5139499 *Sep 5, 1990Aug 18, 1992American Cyanamid CompanyScrew and driver
US5423819 *Aug 17, 1992Jun 13, 1995American Cyanamid CompanyScrew and driver for securing a bone block
US6723107Apr 18, 2000Apr 20, 2004Orthopaedic Biosystems Ltd.Method and apparatus for suturing
US6984237May 22, 2002Jan 10, 2006Orthopaedic Biosystems Ltd., Inc.Suture passing surgical instrument
US7226453 *Mar 31, 2004Jun 5, 2007Depuy Spine, Inc.Instrument for inserting, adjusting and removing pedicle screws and other orthopedic implants
US8690898Jun 24, 2005Apr 8, 2014Smith & Nephew, Inc.Suture passing surgical instrument
US20050120838 *Jan 14, 2005Jun 9, 2005Gottlieb Steven D.Driving tool
US20050228400 *Mar 31, 2004Oct 13, 2005Chao Nam TInstrument for inserting, adjusting and removing pedicle screws and other orthopedic implants
DE202017101447U1Mar 13, 2017Mar 23, 2017bredent medical GmbH & Co.KGDental-Schraubendreher
WO1990008510A1 *Feb 2, 1990Aug 9, 1990Acufex Microsurgical, Inc.Screw and driver
Classifications
U.S. Classification81/448
International ClassificationB25B23/02, B25B23/10
Cooperative ClassificationB25B23/106
European ClassificationB25B23/10D1