WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Options
Query Language
Stem
Sort by:
List Length
Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2003002307) INTERFERENCE FIT SCREW DRIVER
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2003/002307 International Application No.: PCT/US2002/019985
Publication Date: 09.01.2003 International Filing Date: 21.06.2002
IPC:
B25B 15/00 (2006.01) ,B25B 23/10 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
B
TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
15
Screwdrivers
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
B
TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
23
Details of, or accessories for, spanners, wrenches, screwdrivers
02
Arrangements for handling screws or nuts
08
for holding or positioning screw or nut prior to or during its rotation
10
using mechanical gripping means
Applicants: HAWKES, David, T.[US/US]; US (UsOnly)
ORTHO DEVELOPMENT CORPORATION[US/US]; 12187 South Business Park Drive Draper, UT 84020, US (AllExceptUS)
Inventors: HAWKES, David, T.; US
Agent: CANNON, Karl, R.; Clayton, Howarth & Cannon, P.C. P.O. Box 1909 Sandy, UT 84091-1909, US
Priority Data:
09/894,33028.06.2001US
Title (EN) INTERFERENCE FIT SCREW DRIVER
(FR) TOURNEVIS A AJUSTEMENT SERRE
Abstract:
(EN) An interference fit screw driver (10) has a polygonal driving surface (12) to impart torque to a corresponding surface in a screw (20). The end of the polygonal driving surface has a frusto-conical shaped gripping means (14) which fits into an aperture (24) in the screw to create a friction fit between the screw (20) and screw driver (10). This allows the screw to be attached to the screw driver to facilitate installation of the screw. The friction fit is tight enough to hold the screw (20) to the driver (10), yet allows the driver to be easily disengaged from the screw by pulling the driver away from the screw once the screw is lodged in place. The interference fit screw driver (10) is particularly useful in turning bone screws into the spine of a patient during orthopedic surgery.
(FR) L'invention concerne un tournevis (10) à ajustement serré avec une surface d'entraînement polygonale (12) de transmission de couple à une surface correspondante d'une vis (20). L'extrémité de la surface d'entraînement polygonale est pourvue d'organes (14) de saisie de forme frusto-conique s'encastrant dans une ouverture (24) de la vis de manière à obtenir un ajustement serré entre la vis (20) et le tournevis (10). Ceci permet à la vis d'être fixée au tournevis pour faciliter l'installation de la vis. L'ajustement serré est suffisamment serré pour retenir la vis (20) au tournevis (10), mais permet néanmoins de retirer facilement le tournevis de la vis en tirant le tournevis hors de la vis une fois que la vis est mise en place. Le tournevis (10) à ajustement serré sert en particulier à visser des vis de chirurgie osseuse dans la colonne vertébrale d'un patient au cours d'une intervention chirurgicale orthopédique.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, OM, PH, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)