Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 7632053 | Method for the production of a screw, and screw produced according to said method A screw (1) having a head (2), a shaft (4) that includes a thread (5), and an interior engaging member (3) in the head is provided. The screw (1) is produced from an ultra-high strength steel using a cold forming method.... | 12/15/2009 |
| 7581910 | Fastener head A fastener has a recessed drive configuration with outlet channels extending from the recessed drive configuration to the outer surface of the fastener. ... | 09/01/2009 |
| 7568872 | Lobed drive for hi-lite fastener A drive socket for a male threaded fastener includes three rounded lobes of equal radius which are located equidistant from the center of the fastener and 120° apart from each other. The drive socket also includes three flat surfaces, each flat surface being locate... | 08/04/2009 |
| 7441483 | Tamper-resistant fastener and method and tool for use with same A fastener includes a round, blind hole or pocket in its head. Installation and removal of the fastener is accomplished with a tool containing an eccentric segment on the end of a shaft. When rotated within the pocket, the eccentric segment displaces laterally relat... | 10/28/2008 |
| 7441998 | Fastening element for hard constructional components A fastening element for hard constructional components includes a cylindrical base body (22), a self-tapping thread (27) provided at least on a portion of an outer surface (26) of the base body (22) and having a runout (28) that is... | 10/28/2008 |
| 7425112 | Tamper resistant screw An improved tamper resistant screw and driver tool. In one embodiment, the present invention provides a tamper resistant screw and screw driver tool. The screw head features a unique tamper resistant design. The screw cannot be turned successfully with standard scre... | 09/16/2008 |
| 7367768 | Deck screw and installation method for composite lumber A deck screw and an installation method is intended for use with composite lumber, although it can be used with other products. The deck screw may be provided with a head and a shaft that has two regions of varying diameter. The upper region has threads that exceed ... | 05/06/2008 |
| 7351020 | High security fastener constructions A series of high security fastener constructions feature rotatable anti-theft shrouds mounted on locking wheel nuts and wheel bolts designed for vehicular wheels. Each construction features (1) a fastener body having a first body end adapted to accommodate a key rec... | 04/01/2008 |
| 7334976 | Countersunk screw The invention relates to a countersunk screw having a threaded shank and a countersunk head, which latter has a conical surface tapering at a countersinking angle in the direction of the threaded shank. The conical surface has a plurality of ribbed protrusions distr... | 02/26/2008 |
| 7331743 | Lobed drive for hi-lite fastener A drive socket for a male threaded fastener includes three rounded lobes of equal radius which are located equidistant from the center of the fastener and 120° apart from each other. The drive socket also includes three flat surfaces, each flat surface being locate... | 02/19/2008 |
| 7331744 | Lobed drive for hi-lite fastener A drive socket for a male threaded fastener includes three rounded lobes of equal radius which are located equidistant from the center of the fastener and 120° apart from each other. The drive socket also includes three flat surfaces, each flat surface being locate... | 02/19/2008 |
| 7316535 | Screw with a convenient screw head A screw has a convenient head, wherein an engaging concavity is defined. Said engaging concavity includes a central portion and a plurality of radial recesses disposed around and in communication with the central portion. Each radial recess has two insides with one ... | 01/08/2008 |
| 7293949 | Spiral drive fastener with friction engageable surface Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surf... | 11/13/2007 |
| 7275903 | Light weight fastener for use on interference fits in automation A fastener for installation into an interference fit hole within a structure. The fastener may be installed through automated installation methods. The fastener includes an enlarged protruding head at a proximal end of the fastener. Distal the head is a substantiall... | 10/02/2007 |
| 7255522 | Spiral drive fastener with engagement ramp The fastener of this application is designed to facilitate the insertion of rotating power driven tools into the fastener recess. The recess of this fastener generally uses spirally configured driving surfaces and is formed in a counterbore in the upper surface of t... | 08/14/2007 |
| 7226262 | Lobed drive for hi-lite fastener A drive socket for a male threaded fastener includes a plurality of rounded lobes of equal radius which are located equidistant from the center of the fastener and an equal distance from each other. The drive socket also includes flat surfaces located opposite the l... | 06/05/2007 |
| 7225710 | Combination driver and combination fastener A driver has a tip that enables it to engage each one of a conventional hexagonal-head fastener and a conventional lobed-head fastener. The tip includes alternating flutes and crests. The crests are substantially flat to engage straight walls of a hexagonal-head. Th... | 06/05/2007 |
| 7221106 | Cordset based appliance controller An apparatus and method for distributed control of an electrical appliance having a plug and a load and two power carrying conductors connecting the plug to the load, comprising locating power control elements completely within the plug, connecting interface element... | 05/22/2007 |
| 7198306 | Spring-biased locking bolt A spring-biased locking bolt with an operating button and a bolt connected with the operating button is described, wherein the bolt is spring-biased and movable in a sleeve. The sleeve is screwed into a corresponding opening in a machine part or an item of furniture... | 04/03/2007 |
| 7185552 | Movable sample holder A device for the axial and rotational movement of a sample is disclosed comprising a mount member for mounting the sample, which is rotatable about and movable along an axis, characterised in that the mount member has a helical screw thread which produces the moveme... | 03/06/2007 |
| 7182003 | Palm type spanner A palm type spanner comprises a driving head having a receiving portion for receiving a driving tool; and a handle body being an integral plate-like structure; one end of the handle body being formed with an opening portion; the driving head being pivotally installe... | 02/27/2007 |
| 7174811 | Asymmetric wrench and fastener system An asymmetrical wrench and fastener system comprising radially extending splines having opposing surfaces whose inner ends are inclined by different amounts with respect to a radius intersecting the respective inner ends to alter the torque between the tightening an... | 02/13/2007 |
| 7168345 | Palm type spanner A palm type spanner comprises a driving head having a receiving portion for receiving a driving tool; and a handle body being an integral plate-like structure; one end of the handle body being formed with an opening portion; the driving head being pivotally installe... | 01/30/2007 |
| 7162939 | Tamperproof screw, combination with screwdriver bit, and header punch for manufacturing tamperproof screw Related to a tamperproof screw to which a conventional general screwdriver cannot couple so that screw tightening is prevented reliably, to a screwdriver bit that can be simply and quickly coupled to the screw and can reliably prevent a come-out phenomenon during sc... | 01/16/2007 |
| 7163360 | Cutter body, rotary tool, and method for assembling the rotary tool A cutter body which includes cartridges 11 for allowing corresponding cutting inserts 9 to be removably fixed thereto, a cutter body member 3, second screws (cartridge fixation screws 17) for fixing the corresponding cartridges 11 ... | 01/16/2007 |
| 7150211 | Screw and driver therefor A screw (10) has a threaded shank (12) and a head (14). The head has a recess (18) that comprises three lobes (18a,b,c). Each lobe is separated by a curved drive flange (20a,b,c,). A driver (100) has a d... | 12/19/2006 |
| 7147421 | Screw and screwdriver A screw and a screwdriver of the present invention provide an easy insertion of screwdriver bits and the screwdriver conveys a large torque when fastening so that the screwdriver does not rise up from the screw and does not damage recesses to fasten and loosen the s... | 12/12/2006 |
| 7128513 | Screw and driver therefor A screw (10) has a threaded shank (12) and a head (14). The head has a recess (18) that comprises three lobes (18a, b, c). Each lobe is separated by a curved drive flange (20a, b, c). A driver (100) has ... | 10/31/2006 |
| 7097404 | Auto-torque, tamper-proof screws A screw having a screw-threaded shank and a circular head, the head being provided with three radially extending screwdriver tip receiving portions defined between three first, off central integrally formed projections designed to become shaved-off the screw head by... | 08/29/2006 |
| 7073996 | Two-piece crank hanger set for bicycles A two-piece crank hanger set including a left crank arm having a tubular crank spindle attached thereto and a right crank arm having at least one chain sprocket wheel attached thereto. The crank spindle extends through a bicycle crank tube. Bearing cups are removabl... | 07/11/2006 |
| 7066062 | Torque-setting, tamper-resistant fastener and method and tool for use with same A fastener includes a round, blind hole or pocket in its head. Installation and removal of the fastener is accomplished with a tool containing an eccentric segment on the end of a shaft. When rotated within the pocket, the eccentric segment displaces laterally relat... | 06/27/2006 |
| 7066536 | Child seat An adjustable child seat includes a backrest and a seat base and may be used with or without the backrest. The child seat includes adjustable arm rests. The height of the backrest and the depth of the seat base are also adjustable. The connection between the backres... | 06/27/2006 |
| 7059855 | Dental implant system A dental implant system includes a dental implant having an external thread for threading into bone and an internal thread for attachment of a prosthesis. The internal thread has a plurality of notches which accept a complimentary shaped insertion tool. The insertio... | 06/13/2006 |
| 7056075 | Screw-type anchor A self-tapping masonry anchor includes an axial bore that is formed at one end and extends through a portion of the anchor. ... | 06/06/2006 |
| 7051886 | Solid soap with connecting and keeping means By use of a connecting and keeping unit, solid soap is easily kept and used by connecting, in one line, several kinds of solid soap, each different in usage. The unit is constructed by burying a support body equipped with a connecting unit for connecting several cak... | 05/30/2006 |
| 7051624 | Security nut, bolt and screw A security screw fastener, e.g. a nut or bolt having a head (3) around which is a curved exterior surface (5) which is at least partially conical or dome-shaped on which several left-handed and right-handed grooves (12, 13) are formed which are ... | 05/30/2006 |
| 7013767 | Screwdriver/screw unit A screwdriver element includes two bits, each with a sinuous distal tip end and a screw element includes a head having an X-shaped slot that has sinuous side walls. The bit distal tips have a left-handed shape and a right-handed shape and the side walls of the screw... | 03/21/2006 |
| 7004701 | Tamper resistant rotably shrouded security cap and tool A tamper resistant rotably shrouded security cap and tool for preventing unauthorized access to a fluid handling system. The shroud and cap have cooperating engagement means that allows the shroud to rotate freely about the security cap, such that a grip on the shro... | 02/28/2006 |
| 6997085 | Threaded-fastener wrenching structure, threaded fastener and wrenching tool A threaded fastener capable of being reduced in size and weight. A pair of side wall surfaces of each of six radially outwardly projecting, torque transmitting portions lie on straight lines passing through the center line in a cross section perpendicular to the cen... | 02/14/2006 |
| 6988432 | Multi-tiered-recess screws A screw and driver system includes a range of screws and a driver. Each screw has a head having a driving recess in its surface for engagement by the driver. The recess of larger screws in the range have a plurality of superimposed recess tiers of decreasing size wi... | 01/24/2006 |