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.


  1. Advanced Patent Search
Publication numberUS1447564 A
Publication typeGrant
Publication dateMar 6, 1923
Filing dateNov 10, 1921
Priority dateNov 10, 1921
Publication numberUS 1447564 A, US 1447564A, US-A-1447564, US1447564 A, US1447564A
InventorsOlof A Norlund, Oehrli Frank
Original AssigneeOlof A Norlund, Oehrli Frank
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lock housing for screws or bolts
US 1447564 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

ATTO R N Filed Nov. 10 1921 Mar. 6, 1923.



Application filed November 10, 1921. Serial No. 514,362.

To all whom it mwgg concern:

Be it known that we, OLor A. NoRLUND and FRANK OEHRLI, citizens of the United States, residing at Williamsport, in the county of Lycoming and State of Pennsylvania, have invented a new and useful Lock Housing for Screws and Bolts, of which the following is a specification.

This invention relates to lock housings for screws and bolts.

The object is to provide a metallic housing of strength and durability for'protecting the heads of bolts or screws or nuts and preventing their removal by any one not provided with the proper key for the purpose, the said housing preventing the application of an ordinary-wrench or other tool.

Another object is to provide a device of this character wherein the head of the bolt or screw or the nut, as the case may be, serves 'to hold the housing in place, with the open end of the housing in projecting relation thereto, and permitting only the introduction of the key which is provided with interfitting parts for coaction with similar parts of the bolt head or nut, the said interfitting features of the device being capable of wide variation so that the danger of one device being operable by the key in possession ofanothe-r party is reduced'to a minimum.

A full and complete understanding of the invention may be obtained from a consideration of the following detailed description, taken in connection with the accompanying drawing forminga part of this specification; it being understood that while the drawing shows a practical form of the invention, the latter is not confined to strict conformity therewith, but may be changed or modified, so long as such changes or modifications mark no material departure from the salient features of the invention, as specifically pointed out in the appended claim.

In the drawing, in which similar reference characters designate corresponding par s throughout the several figures s Fig. 1 is? an elevation'of a portion of' a spare tire for automobiles, held by any suitable form, of holder and showing the improved housing in connectlon with the latter.

Fig. 2 is anenlarged detail vertical section through the lower portion of the holder having the improved housing mounted thereon and illustrating the manner of engaging the rim of the spare tire.

Fig. 8 is a similar view of the removable operating key.

Fig. 4 is a similar view of the engaged by bolt-head.

Fig. is a displayed view, in perspective, of the parts of the device, partly in section.

Fig. 6 is a transverse sectional view taken on the line 66 of Fig. 4.

While the improved lock housing has been illustrated in connection with a holder for spare tires for automobiles which'are usually placed at the back of a machine, and has means for supporting and displaying tags, etc., it is to beunderstood that the invention may be psed to equal advantage elsewhere to prevent the unauthorized removal of a screw or bolt having a head shaped for the rece tion of a wrench or a nut corresponding y formed.

The invention comprises three parts or members including a specially formed bolt or screw head or nut therefor, an open-ended housing or sleeve having an inwardly-directed flange at one end for engagement with the head or nut, and a removable, openparts being the key to unscrew the nut or ended, tubular key adapted to slide into the I housing and to surround the head or nut and having interfitting parts to coact with interfitting parts of the head or nut to forcibly turn the latter to tighten or loosen the same, the outer end of .the removable key being provided with a polygonal exterior to be engaged by an ordinary wrench beyond the open end of the housing, to provide for the necessary pressure to accomplish such turning action. When-the tightening or loosening has been accomplished, it is only necessary to withdraw the key from the housing, when-the head or nut is effectively guarded from tampering by a Wrench 01' other tool, as the head or nut is so shaped as to prevent the use of a chisel, screw-driver or drift punch to turn the same by hammering or driving.

In Fig. l of the drawing, there is illustrated a portion of a spare tire A having the usual rim B and held in any customary manner in a holder C, all of which forms no part of the invention. The holder usually employs a downwardly-extending arm D reaching to the lowermost point of the tire and provides, at that point, a rear abutment E for the rim of the wheel to bear against and forming a part of an enlargement F coacting with a clamping finger or, plate G, which is adapted to be held by a bolt H threaded into the enlargement F, and usually having an ordinar nut applied to the outer threaded end to ind the lower end of said finger or plate in clamping relation to the outer edge of the tire rim.

The nut 1, in the present instance, has lts bore threaded to fit the exposed end of the bolt H, and is'provided, at its inner face, with a reduced, cylindrical extension 2, thus providing an annular channel 3 for a purpose to be explained. The outer or front end of the nut 1 has its marginal corner rounded as at ,4, thus preventing any attempt to turn the nut in either direction by drifting in a well-known manner, the enlarged portion of the nut, or that having the greatest diameter, being perfectly round as well as the inturned flange the extended part 2.

A plurality of longitudinally-disposed grooves 5 are formed in the said enlarged portion and extend from the front rounded corner thereof to the annular channel 3 and while, in the present instance, only two of said grooves have been shown in a certain spaced relation to each other, it is to be understood that more than two of such grooves riphery of the nut, and that they may be equally spaced apart if desired, or such spacing may be unequal.

A guard sleeve or housing '6 preferably formed by stamping some suitable gage of sheet steel into shape, is adapted to be held by the nut'l, the said sleeve being open at its front end and having, at its rear end, an inwardly-directed flange 7 whose inner wall is adapted to fit freely over the extension 2 of the nut, \the sairllkbextension being substantially equal in le th to the thickness of the sleeve, so that when the nut is turned p tightly against the outer face of the clampfn plate or finger G, the sleeve 6 is also clampedinto place in surrounding relation to the nut.

The internal diameter of the sleeve 6 is considerably greater than the outer diameter of the enlarged portion of the nut, and provides ample space for the introduction of the open, inner socket end 8 of a tubular key 9, preferably formed of metal similar to the sleeve 6, and having an internal shoulder 10 and the outer or front portion of the bore 11 of somewhat smaller diameter than the socket 8. The front marginal edge of the sleeve is preferably rounded to facilitate the introduction of the peripheral wall of the socket, whose edge is also preferably rounded for the same purpose, and the key may be employed around the pe has its outer end formed or pressed into an exterior polygonal head 12 for the application of an ordinary wrench for a purpose to be explained.

A series f longitudinal grooves 13, formed by pressing the metal inwardly, are

provided at the inner, socket end of the key,

abuts against the inner wall of the flange 7 of the housing, whereupon a wrench may be applied to the polygonal head 12 and the nut removed from the bolt H or applied thereto, as the case'may be.

In applying the improved housing, the latter may be first applied to the exposed end of the bolt H as shown in Fig. 5, when the nut 1, after being seated in the socket end of the key 9, may be applied to the end I of the bolt and by the use of a wrench, the

desired tension may be obtained.

From the foregoing, it willbe seen that a simple, easily operated and cheaply manufactured housing for the heads of securing elements, such as bolt heads, screw heads or nuts has been provided, which will effectively preventthe surreptitious removal of nuts, from spare tire holders, or from similar places, and that by reason of the interlocking features provided on the nut and the key, the device is susceptible of great variation to provide different combinations for a large number of purchasers. The combination of the rounded head of the securing element seated within the circular housing with a limited space :between the head and the housing and of that portion of the housing which extends above the said head, prevents unauthorized manipulation of the head by any tool save the specially constructed key.

What is claimed is A lock for the circular head of a securing element, comprising a tubular sleeve open at one end and having an inturned flange at the other end and of greater internal diameter than the diameter of said head, the said head having an annular channel at the inner end for the reception of said flange of the sleeve to clamp the latter in place, and that portion of the head beyond the channel being provided with a plurality of longitudinal grooves spaced apart and extending from the front face thereof to the annular channel, and a removable, tubular key having a III polygonal head at one end and an opening inwardly directed longitudinal ribs to fit the grooves of the head to turn the same k when a wrench is applied to the polygonal head which projects from the open end of the sleeve, said sleeve being extended sulficiently beyond the head of the securing element and cooperating with the rounded head to prevent unauthorized manipulation of OLOF A. NORLUN D. FRANK OEHRLI.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2895362 *Sep 11, 1957Jul 21, 1959George H JamgotchianWrench
US3060785 *Jul 11, 1960Oct 30, 1962Standard ScrewTamperproof bolt head having hidden tool engaging surfaces
US3105707 *Jan 23, 1961Oct 1, 1963Jacobson Elliot LPlumbing fitting and escutcheon assembly therefor
US3369441 *May 4, 1966Feb 20, 1968Anchor Engineering CoFastener with tapered tool engaging surfaces
US3519979 *Jul 26, 1968Jul 7, 1970Vikoa IncTamper-proof electrical termination
US3821975 *Nov 16, 1972Jul 2, 1974L HakerAutomotive wheel lock means
US3930428 *Jan 27, 1975Jan 6, 1976Arthur Duane HaleTheft resistant combination lug nut apparatus
US4027572 *May 13, 1974Jun 7, 1977Burge William GTheft-prevention screw fastenings
US4037515 *Aug 26, 1976Jul 26, 1977Kesselman David ATamper resistant fastener
US4168921 *Oct 6, 1975Sep 25, 1979Lrc Electronics, Inc.Cable connector or terminator
US4170918 *Oct 28, 1977Oct 16, 1979Burge William GTheft-prevention screw fastening
US4616535 *Jul 11, 1985Oct 14, 1986Chiavon Ezio RTamper-proof threaded fastenings
US4645397 *Sep 24, 1984Feb 24, 1987James PadelfordTire theft prevention device
US4897008 *Oct 17, 1988Jan 30, 1990Mcgard, Inc.Anti-tamper nut
US5112176 *May 9, 1991May 12, 1992Mcgard, Inc.Shrouded anti-theft locknut
US5360304 *May 11, 1993Nov 1, 1994Mcgard, Inc.Fastener construction
US5401133 *Sep 16, 1993Mar 28, 1995Wildeck, Inc.Security washer for security paneling system
US5626062 *Mar 15, 1994May 6, 1997Colvin; David S.Socket and ratchet wrench
US5716398 *Jan 23, 1995Feb 10, 1998Baxter International, Inc.Mitral valve rotator assembly
US5730568 *Oct 3, 1996Mar 24, 1998Mcgard, Inc.Anti-galling fastener
US5863166 *Aug 5, 1997Jan 26, 1999Pinhead Components Inc.Anti-theft locking device
US5964800 *Aug 15, 1997Oct 12, 1999Baxter International, Inc.Methods for rotating a prosthetic heart valve within a sewing ring
US6062787 *Dec 22, 1998May 16, 2000Maddalena; Kris L.Tamper resistant valve stem cap
US6321623Oct 26, 1999Nov 27, 2001The Jendyk Company, Inc.Jam-proof and tamper-resistant lug nut
US6571588 *Nov 3, 2000Jun 3, 2003Po W. YuenSecurity nut and key assembly
US6609401 *Sep 10, 2002Aug 26, 2003Yuriy IskhakbayevCar wheel anti-theft device
US6908273Jun 21, 2001Jun 21, 2005Sean Kenneth MackaySecurity fixing for machine guard
US7004701 *Apr 11, 2003Feb 28, 2006Ross William KTamper resistant rotably shrouded security cap and tool
US7204521Oct 24, 2003Apr 17, 2007U-Haul International, Inc.Coupling disconnect prevention device
US7278341 *Mar 27, 2006Oct 9, 2007Selective Site Consultants, Inc.Structural bolt security apparatus
US7353735Jun 2, 2005Apr 8, 2008The Stanley WorksRatchet wrench
US8733140 *Aug 12, 2011May 27, 2014Charles JonesTrailer theft deterrent device
US8739585Sep 14, 2012Jun 3, 2014Toby Jack SimsWheel security lock
US9004836 *Mar 15, 2011Apr 14, 2015Atomic 22 LimitedSecurity fastener
US9200666Aug 1, 2014Dec 1, 2015Nissan North America, Inc.Vehicle wheel lock assembly
US9429181Jul 31, 2014Aug 30, 2016Nissan North America, Inc.Vehicle wheel lock assembly
US20030165372 *Jun 21, 2001Sep 4, 2003Mackay Sean KennethSecurity fixing for machine guard
US20040130145 *Oct 24, 2003Jul 8, 2004U-Haul International, Inc.Coupling disconnect prevention device
US20040202527 *Apr 11, 2003Oct 14, 2004Ross William K.Tamper resistant rotably shrouded security cap and tool
US20040208723 *Apr 15, 2003Oct 21, 2004Rafal StawarskiAnti-tamper device having an inner shell and an outer shell that rotate independently
US20050247169 *Nov 24, 2004Nov 10, 2005Faries Durward I JrFastening system and method of fastening objects with enhanced security
US20060272455 *Jun 2, 2005Dec 7, 2006The Stanley WorksRatchet wrench
US20070175251 *Jan 30, 2006Aug 2, 2007Arthur ShermanMethods and systems for supporting and securing a wheel hub
US20100186465 *Oct 23, 2007Jul 29, 2010Frantz Donald RUniversal electronics lock
US20120242077 *Mar 31, 2010Sep 27, 2012Neil ShragaHose Coupling and Protective Hose
US20130011215 *Mar 15, 2011Jan 10, 2013Atomic22 LimitedSecurity fastener
US20160160529 *Dec 5, 2014Jun 9, 2016Jeffrey D. CarnevaliSecurity knob with threaded member
USD270229Oct 22, 1980Aug 23, 1983The Eastern CompanyTool and operator head for tool-operated lock
USD270424Oct 22, 1980Sep 6, 1983The Eastern CompanyTool operator for tool-operated locks
USRE33114 *Sep 22, 1988Nov 21, 1989 Tamper-proof threaded fastenings
EP0253496A1 *Jun 11, 1987Jan 20, 1988Alan Elgar Herbert EllisSecurity wheel nut or bolt
WO2001098674A1 *Jun 21, 2001Dec 27, 2001Sean Kenneth MackaySecurity fixing for machine guard
WO2016017269A1 *Jun 3, 2015Feb 4, 2016日産自動車株式会社Vehicular wheel lock assembly
U.S. Classification411/337, 81/121.1, 411/919, 70/260, 411/910
International ClassificationF16B41/00, F16B23/00
Cooperative ClassificationF16B41/005, Y10S411/919, Y10S411/91, F16B23/0061
European ClassificationF16B23/00E, F16B41/00C