Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 6811156 | Seal for hydraulically sealing a piston rod A seal for hydraulically sealing a piston rod that travels axially into and out of a housing, preferably in a hydraulic dashpot. The seal comprises a preferably resilient-plastic sealing component (5). The sealing component is provided with one or more sharp ... | 11/02/2004 |
| 6758480 | Sealing system for a drive unit consisting of a motor and a transmission A sealing system for fast-running motors with a directly flanged-on gear unit, used for passenger conveyor systems such as escalators and moving walkways, is provided. The sealing system includes at least one sealing element comprising a radial shaft seal, at least ... | 07/06/2004 |
| 6517080 | Seal material having anisotropic properties A material comprised of two different polymers so that the material exhibits anisotropic properties. The anisotropic properties exhibit hardness and wear resistance along with flexibility. The anisotropic material is made up of a hard segment polymer and ... | 02/11/2003 |
| 6430842 | Assembly for supporting a rotating structure The present invention provides an improved assembly for rotating and sealing a centrifugal dryer and a dryer including such a sealing assembly. A seal according to the present invention includes an end cap supporting a bearing that in turn rotationally su... | 08/13/2002 |
| 6394462 | Push rod seal for disc brake actuator This is a reliable long-lasting removable seal for attachment to the push rod opening of a service brake actuator that is to be used with a disc brake system. The seal allows the service brake actuator to enjoy the benefits of having breather holes in its... | 05/28/2002 |
| 6270247 | Mixing and kneading apparatus A mixing and kneading device comprises a mixing and kneading shaft mounted in a housing and driven to a rotating as well as to a reciprocating movement. For sealing the housing, there is provided a sealing assembly located between the housing and the mixi... | 08/07/2001 |
| 5137285 | Sealing system for mutually rotating machine parts The sealing system consists of a commercially-available shaft seal (2), having a covering ring (3) to protect the shaft seal dirt and from exposure to the atmosphere. The covering ring (3) pre-arranged separately outside the conventional flexible shaft se... | 08/11/1992 |
| 5046718 | Floating ring labyrinth-type dynamic shaft seal and process for using same A process for providing a seal around a reciprocating and/or rotating shaft as in an apparatus for manipulating a fluid at least in part by the rotary and/or reciprocal motion of the shaft, involving the insertion of substantially identically configured f... | 09/10/1991 |
| 5029880 | Pressure sealing device for the gap between two coaxial cylindrical surfaces A device for sealing the gap between a substantially cylindrical outer surface of a body and a coaxially surrounding and substantially cylindrical wall surface against a fluid pressure, particularly hydraulic liquid pressure, which pressure is greater on ... | 07/09/1991 |
| 4917390 | Hydraulic seal assembly An improved seal for use in a hydraulic system such as a piston rod in a housing, the seal having a stressing member and sealing member in which the latter is in point contact with, for example, a piston rod under low fluid pressure and has an additional ... | 04/17/1990 |
| 4844481 | Cylindrical seal system A cylindrical seal assembly adapted for sliding or rotary movement within a cylindrical chamber comprises first and second body elements having substantially cylindrical shapes. The body elements are secured together with their respective cylindrical side... | 07/04/1989 |
| 4840379 | Split sealing ring having a bias cut An improved generally annular split sealing ring includes generally curved radially inner and outer surfaces and opposed first and second axial surfaces extending between the inner and outer surfaces. The sealing ring has an axially extending, radially ce... | 06/20/1989 |
| 4828272 | Sealing apparatus with elastic seal ring and plastic slide ring A hydraulic sealing apparatus for sealing an annular gap between two members which are movable relatively to each other and one of which has an annular groove for receiving the sealing apparatus, the groove having a side wall at least on the low pressure ... | 05/09/1989 |
| 4789373 | Hydraulic torque impulse generator A hydraulic torque impulse generator comprises a motor rotated drive member (16) including a fluid chamber (18) into which the rear end portion (19) of an output spindle (21) extends to receive torque impulses generated in said fluid chamber (18). The rea... | 12/06/1988 |
| 4618153 | Annular reinforced wiper for piston rods An annular wiper for piston rods, disposed in a cylindrical wall opening wherein an axially movable piston rod is running, comprises a reinforced ring of an elastic, somewhat flexible material having a portion with an inner diameter slightly greater than ... | 10/21/1986 |
| 4577873 | Dual valve stem packing arrangement Valve packing comprising one lower, adjustable, compressible, solid ring set followed by an upper, non-adjustable, pre-compressed, flexible, plastic v-ring set; both packing sets inter-spaced by a slidable gland having an additional outer elastomeric seal... | 03/25/1986 |
| 4379558 | Anti-extrusion packing member A seal or packing for use in dynamic or static applications subject to stretching, twisting or deforming forces, includes a body member forming the sealing and packing surfaces, together with an anti-extrusion reinforcing element incorporated in the body ... | 04/12/1983 |
| 4309040 | Linear seal apparatus A seal apparatus to prevent the escape of a ferrofluid from a multiple-stage ferrofluid rotary seal about a shaft during axial movement of the shaft element, the seal apparatus comprising a pressure ring element against one facing wall of the rotary seal,... | 01/05/1982 |
| 4184690 | Annular elements There is disclosed a seal formed by a seal housing having an annular chamber, a shaft extending therethrough and an annular sealing element disposed within the chamber and partitioning it into a plurality of annular spaces, the sealing element being rigid... | 01/22/1980 |
| 4179131 | Seal arrangements A seal arrangement comprising three sealing rings. The first ring is intended to locate in a groove in a first machine element and has a bearing surface by which it is bearable against the base of the groove of the first machine element, and a surface spa... | 12/18/1979 |
| 4151999 | Shaft seal A shaft seal assembly has an elastomer load ring seated in an annular groove provided in an organic plastic sealing ring. The sealing ring is constructed to provide greater unit loading at the outer edges of the sealing surface than at the remainder of th... | 05/01/1979 |
| 4046389 | Stuffing box A gland for compressing packings in the receptacle of a stuffing box has a washer-like stamping made of metallic sheet material and bearing against the exposed side of the outermost packing, and a cupped section whose flange is axially movably secured to ... | 09/06/1977 |
| 4039198 | Packing gland A packing gland assembly providing separate tightening of a packing seal in both the axial and radial directions. Tightening of the packing seal in the aforesaid directions is provided by a pair of concentric sleeves mounted about a shaft wherein the latt... | 08/02/1977 |
| 4014555 | Hydrostatic sealing device Disclosed is a hydrostatic sealing device for utilization of a high pressure fluid in providing a low friction seal for rotating or sliding parts. High pressure fluid is utilized to balance a piston-actuated seal against the rotating or sliding part with ... | 03/29/1977 |
| 3945649 | Completely fluidtight and frictionless shaft seal packing Shaft seal packing which has a large number of thin annular packing members uprightly set onto, and closely fitted to, a shaft in axial layers by compressing them only axially with respect to each other in a stuffing box, the inner diameter of the annular... | 03/23/1976 |
