Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7374370 | Rock bolt anchor having concurrent chemical and mechanical anchoring means and method for using the same A rock bolt anchor includes a top portion permanently fixed to a bottom portion. The top portion carries a package of resin. A spring-loaded mechanism pressurizes the package and forces the resin out when the package is lanced. The bottom portion main body carries a... | 05/20/2008 |
| 7107697 | Measuring point bolt and method of making the bolt Measuring-point bolt including a body having a first end and a second end. The first end has an internal opening adapted to receive a measuring device pin. The second end is adapted connect to a hollow pin of another measuring device. A main internal opening is arra... | 09/19/2006 |
| 7083370 | Fastening devices A device for fastening panels to tubular frames comprises a dowel element (10) and a sleeve element (11). An expander region (15) of the dowel element, comprising a plain cylindrical section (16) and a conically tapering section (17 | 08/01/2006 |
| 7017945 | Active venting apparatus and method for airbag systems Enhanced airbag modules and associated methods are provided. An airbag module according to the invention may have a cushion with an inflatable protection zone and a flexible venting tube coupled to the inflatable protection zone. A closure mechanism may be used to c... | 03/28/2006 |
| 6935811 | Frictional mining bolt A system for mine roof reinforcement includes a bearing plate and a tubular member with an inner surface, an outer surface, first and second free ends, and an enlarged portion disposed proximate one of the free ends. The system also includes a projectile and an inse... | 08/30/2005 |
| 6712572 | Expansion dowel An expansion dowel having a cylindrical expansion body (1) having a through-bore (3) and formed of at least two segments (4a, 4b) connected with each other, an additional expansion element (7) located in a recess (... | 03/30/2004 |
| 6282999 | Plumbing part installation and removal tool A plumbing tool is constructed for installing and removing plumbing parts such as tub and sink drains that are engaged together by conventional right-hand threads, one within another. The tool can also be constructed to remove or install left-hand parts. ... | 09/04/2001 |
| 6062783 | Expanding bush and captive bolt assembly An expanding bush and captive bolt assembly (1), comprising a bolt (2), a generally cylindrical bush (4), and a ring clip (6) that retains the bush on the bolt. The bush (2) has an inner surface with a portion (22) that has a frustoconical taper, a channe... | 05/16/2000 |
| 5960654 | Spare tire carrier lock A spare tire carrier lock including a split body collectively formed of at least two body sections, wherein the exterior shape of the split body is complementary to the shape of a predetermined socket of a hoist shaft of a hoist assembly for a spare tire ... | 10/05/1999 |
| 5846041 | Nonrotating, self-centering anchor assembly for anchoring a bolt in a borehole An expandable anchor assembly is provided for anchoring the threaded end portion of an elongated roof bolt in a borehole. The anchoring assembly includes a hollow outer sleeve in the form of a plurality of symmetrically arranged, longitudinal segmented wa... | 12/08/1998 |
| 5344257 | Mine roof expansion anchor and bail element A bail element (10) having a medial portion (12) with a pair of legs (14, 16) extending integrally therefrom and a mechanical expansion anchor having a pair of shell halves (68, 70) and tapered plug (80) held in assembled relation by the bail. The bail le... | 09/06/1994 |
| 5284409 | Expansion anchor for engagement in a hole An anchor comprising a core including first and second ends and a cylindrical portion between said ends, the first end including means for engaging with a body to be anchored, and the second end terminating in a portion which is enlarged gradually. A slee... | 02/08/1994 |
| 5263803 | Anchor bolt Sleeve anchor comprising a tapered stem increasing in section to form a head at one end, at least the end portion of the stem remote from the head being threaded, a tubular sleeve placed over said stem being retained between the head and a threaded retain... | 11/23/1993 |
| 5226678 | Split gland A split gland having only three parts to obtain effective stability to relative motion of the constituent half-gland members. A large area clamping ring generates a clamping force effective to maintain the alignment between male and female mirror image ha... | 07/13/1993 |
| 5219248 | Mine roof expansion anchor with improved bore hole engagement means and method of installation thereof A mine roof expansion anchor having a conventional tapered camming plug and radially expansible shell having associated therewith an element which resiliently engages the wall of a bore hole as a roof bolt carrying the anchor is inserted in the hole. The ... | 06/15/1993 |
| 5178501 | Axially adjustable screw anchor A fastener system for precision mounting of body parts to a frame in spite of unavoidable manufacturing variations, composed of an anchor hole in a frame and an axially adjustable screw anchor seated stationarily into the anchor hole. The axially adjustab... | 01/12/1993 |
| 5116176 | Expansion anchor An expansion anchor capable of being expanded by thrusting a lock plug into a contacted portion to spread a clamp member having acutely angular peripheral edges. When the anchor is expanded within a hole in a rigid material such as concrete, the angular e... | 05/26/1992 |
| 5112160 | Rock anchor This invention relates to a rock anchor which includes an elongated element which is composed of a plurality of elongated tension members which are arranged around the long axis of the elongated element in a circumferential spaced relationship to provide ... | 05/12/1992 |
| 5090857 | Metallic threaded composite fastener A metallic threaded composite fastener, particularly suited for high temperature applications, has a body member made of high temperature-resistant composite material with a ceramic coating. The body member has a head portion configured to be installed in... | 02/25/1992 |
| 5059073 | Peg for anchoring in a hole with an undercut portion A peg for anchoring within a hole having an undercut portion comprises a body (1) with an external end (5) for mounting an element thereon and a tapered internal end (11) widening out towards the inside of the hole, a locking ring (2) formed from segments... | 10/22/1991 |
| 4968198 | Buckling sleeve blind fastener A blind fastener is disclosed. The fastener comprises a tubular nut, a buckling sleeve and a mandrel. The buckling sleeve on one of its ends has a bearing face radially overhanging a facing restraint face of the tubular nut, and a tapered surface which de... | 11/06/1990 |
| 4883396 | Dual expansion and non-expansion anchor A dual expansion and non-expansion anchor comprising a pair of inner and outer expansion fasteners connected to each other by means of a screw-threaded connecting tie, said expansion fasteners being adjustable on the connecting tie to adjust to the spaced... | 11/28/1989 |
| 4861198 | Expansion assembly for mine roof bolts An improved expansion assembly for a mine roof bolt has a tapered plug, two expansion leaves that bear against the tapered plug, a bail that connects the expansion leaves and extends over the end of the mine roof bolt, and a breakable holding ring to keep... | 08/29/1989 |
| 4614471 | Expansion anchor An expansion anchor is used in a hole in a receiving material where the hole is undercut. The expansion anchor includes an axially elongated anchor sleeve containing slots extending in the axial direction. Expansion interlock members are radially displace... | 09/30/1986 |
| 4613264 | Anchor bolt An anchor bolt for clamping an object tightly against a receiving surface comprises a threaded elongated anchor rod having a head, an expansion body threadedly received on the rod in spaced relation to the head, and an expansion sleeve on the expansion bo... | 09/23/1986 |
| 4611485 | High pressure pipe stopper A high pressure pipe stopper includes an elongated stem having a threaded section and terminating at a first end in a conically shaped mandrel having an exterior surface sloped at an angle of about 5°. The pipe stopper also includes a plurality of grip s... | 09/16/1986 |
| 4602902 | Expansion dowel assembly An expansion dowel assembly includes an axially elongated sleeve having a leading end and a trailing end, an axially extending spreading member located within the sleeve adjacent its leading end, and a threaded bolt extending into the trailing end and tow... | 07/29/1986 |
| 4602500 | Apparatus for leakage testing of tubes and joints A leakage testing apparatus includes a pull bar surrounded by an array of arcuate segments having teeth that engage and deform the inner surface of a tube. When tension is applied to the pull bar, a cam forces the segments to move outwardly to contact the... | 07/29/1986 |
| 4519735 | Expansion anchor An expansion anchor (3) is provided for retention in an approximately cylindrical well hole (7) having a conical enlargement (9) at a distance from the well opening and widening toward the well hole floor. The expansion anchor (3) is provided on its sleev... | 05/28/1985 |
| 4500239 | Interlocking toggle bolt Toggle bolt (10) which can be set interlockingly in an undercut bore (12) and having locking elements disposed for pivoting on the toggle bolt front end and biased by a spring (32) for an excursion into the position of engagement with the undercut (16). T... | 02/19/1985 |
| 4402639 | Anchor bolt An anchor bolt is arranged to be secured in a relatively deeply drilled hole having a conical enlargement adjacent the base or inner end of the hole. The anchor bolt is formed of an axially elongated tie rod and an anchor located on the end of the tie rod... | 09/06/1983 |
| 4315708 | Positively locking toggle Toggle (10) which can be set form-fittingly on the undercut surface of a bore, having an elongated fastening bolt (18) on whose bore-internal end locking elements (22) are mounted, which can be rocked outwardly by a conical component (28) disposed axially... | 02/16/1982 |
| 4293259 | Locking toggle bolt Toggle which can be set against the face of an undercut provided within a bore, and having an elongated bolt, on whose bore-internal end locking elements are mounted, which, by means of a conical component disposed for axial displacement on the bolt, can ... | 10/06/1981 |
| 4290338 | Straddle cartridge for a straddle cartridge anchor The subject invention relates to a straddle cartridge for a straddle cartridge anchor having a central bore which is adjusted to the conicity of the anchor head and wherein the cartridge parts are held together by means of straddle members arranged in suc... | 09/22/1981 |
| 4000585 | Inflatable collapsible tent This invention discloses a novel collapsible tent which is designed to reduce the humidity therein and which utilizes novel ground-holding means to hold it securely to the ground when erected. The tent covering comprises separate inflatable sections which... | 01/04/1977 |
| 3957069 | Expandible plugs for securing a tent This invention discloses a novel collapsible tent which is designed to reduce the humidity therein and which utilizes novel ground-holding means to hold it securely to the ground when erected. The tent covering comprises separate inflatable sections which... | 05/18/1976 |
