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| Number | Title | Issue Date |
| 4294486 | Camper and tent unit A camper and tent unit is applied to a passenger car and has a housing with a vertical section supported on the rear bumper of the car and a horizontal section extending forwardly and supported on the roof of the car. The vertical section contains a galle... | 10/13/1981 |
| 4294477 | Flexible ring gasket retainer for flanged connectors A ring gasket is retainer in position on a pipe connector flange with the ring gasket properly positioned for sealing engagement and loading between opposed circular grooves in the flange and a mating flange or member. The ring gasket is supported on one ... | 10/13/1981 |
| 4289244 | Supporting apparatus for medical bottles and the like Apparatus for supporting intravenous bottles, or the like, which includes a first elongate rod member adapted to be suspended from the ceiling, and a second elongate rod member telescopically related to the first member, and depending therefrom. A bottle ... | 09/15/1981 |
| 4287250 | Elastomeric cushioning devices for products and objects Devices for packaging and/or cushioning products and objects, the devices including permeable elastomeric sheets sealed together at predetermined locations to form separate and discrete chambers, or intercommunicating chambers, inflated initially with a g... | 09/01/1981 |
| 4278138 | Composite heavy metal drill collar A composite drill collar for drilling bore holes in earth formations including a structural steel outer jacket having a lower end secured to a lower coupling connectable to a drill bit and an upper end secured to an upper coupling connectable to an adjace... | 07/14/1981 |
| 4275528 | Electroplated diamond milling cutter A milling cutter rotatable about an axis and including a cylindrical steel core having helical tapered threads, such as V-shaped threads, diamond grit of a suitable mesh being appropriately secured, as by nickel plating, onto the crests, roots and flanks ... | 06/30/1981 |
| 4272109 | Ring gasket retainer for flanged connectors A ring gasket is retained in position on a pipe connector flange with the ring gasket properly positioned for sealing engagement and loading between opposed circular grooves in the flange and a mating flange or member. The ring gasket is supported, in som... | 06/09/1981 |
| 4271606 | Shoes with studded soles Shoes incorporating a multiple chambered sole member inflated to a pressure above atmospheric, and disposed above and adjacent to an outsole having a deflectable web and projecting elements, such as ground-engaging studs, depending from the web and dispos... | 06/09/1981 |
| 4266621 | Well casing window mill A diamond milling cutter for elongating a laterally opening window in a well casing set in a well bore extending into the earth. The mill has a revolving surface which engages a sidetracking whipstock or the edge of the casing being milled to urge the mil... | 05/12/1981 |
| 4264086 | Bumper hitch A bumper hitch has a clamp applied to a vehicle bumper by a flexible strap and hooks. The flexible strap is initially wound on rotatable cross members to initially engage the hooks with the upper and lower, inner edges of the bumper. Screws at opposite en... | 04/28/1981 |
| 4260022 | Through the flow-line selector apparatus and method A through the flowline or "TFL" tool selector has a base provided with a number of spaced flowline ports and a diverter tube shiftably mounted in a housing for selective communication with the flowline ports. The base is mounted on a remotely operable con... | 04/07/1981 |
| 4252684 | Crystallized silica-alumina cogel and catalyst employing the same This invention relates to alpha (Si, Al)O4 crystalline complex, and to silica-alumina gel and crystalline alumino silicate host containing said alpha (Si, Al)O4 complex; both gels and crystalline alumina silicates containing a novel ... | 02/24/1981 |
| 4246138 | Crystalline alumino silicate-silica-alumina gel catalysts and processes for producing same This invention relates to catalysts containing crystalline alumino-silicate zeolite, hydrothermally treated silica-alumina cogels and the employment of the same as cracking catalysts.... | 01/20/1981 |
| 4245709 | Removable drill string stabilizers A stabilizer sleeve, or other sleeve, to be releasably mounted on a drill collar for centering a drill string in a well bore, includes an outer stabilizer sleeve to be mounted on the cylindrical periphery of the drill collar and having an internally threa... | 01/20/1981 |
| 4244432 | Earth-boring drill bits The invention relates to the design of earth bore-hole drill bits employing shaped preform cutters containing hard abrasive materials, such as diamonds, the cutters being mounted in companion preformed sockets in a hard metal bit matrix.... | 01/13/1981 |
| 4244431 | Drilling apparatus with dual drill pipe and cross-over Apparatus is disclosed for drilling a pilot hole and subsequently enlarging the pilot hole in earth formation. A dual concentric pipe string is used for circulating air downwardly through the outer pipe via a cross-over sub, through a pilot bit and upward... | 01/13/1981 |
| 4243252 | Dual concentric pipe joint Apparatus is disclosed for drilling a pilot hole and subsequently enlarging the pilot hole in earth dormation. A dual concentric pipe string is used for circulating air downwardly through the outer pipe, a cross-over sub and through a pilot bit and upward... | 01/06/1981 |
| 4243159 | Pump devices for dispensing fluids A spring actuated pump device is mounted on a container for fluids, the device including a pump chamber into which fluid from the container can flow, the spring expanding and forcing a cylinder structure against the fluid in the chamber to pressurize it, ... | 01/06/1981 |
| 4240932 | Exchanged mordenite catalysts and processes for producing the same This invention relates to exchanged mordenite and catalysts employing the same.... | 12/23/1980 |
| 4240683 | Adjustable bearing assembly An adjustable bearing assembly has radial and thrust bearings adjustable on a bearing shaft to eliminate clearance in the bearings and in springs in the bearing assembly. The bearing assembly is shown in combination with an in-hole motor of the fluid driv... | 12/23/1980 |
| 4234048 | Drill bits embodying impregnated segments A diamond drill bit for drilling bore holes in earth formations having a body connectible to a drilling string, and provided with a matrix portion of hard metals in which diamonds are surface set at the outer gage portion and adjacent to the bit axis, the... | 11/18/1980 |
| 4234043 | Removable subsea test valve system for deep water A subsea test valve system for wells completed at the floor of the sea includes a safety valve and disconnect mechanism mounted in a blowout preventer at the bottom of the sea and having hydraulic fluid pressure operated means for opening the safety valve... | 11/18/1980 |
| 4232888 | Wireline releasable seal connector for wellpipe strings A wireline releasable sealing connector is connected in a tubular pipe string together with a packer which is adapted to be set in the well casing. The connector is releasable and connectable without rotation of the pipestring. Tension is transmitted thro... | 11/11/1980 |
| 4231437 | Combined stabilizer and reamer for drilling well bores An upper stabilizer and a lower reamer are mounted on an integral or one-piece body adapter to be connected in a tubular drilling string for drilling well bores.... | 11/04/1980 |
| 4223920 | Vertically retrievable subsea conduit connector A manifold unit is connected to a running tool and pipe and run into position in a receptacle on a subsea template or platform to establish a flow path between fluid passages in the receptacle. Fluid supplied through the running pipe forces locking elemen... | 09/23/1980 |
| 4219945 | Footwear A shoe embodying a multiple chambered pneumatically inflated insert encapsulated in a yieldable foam which acts as a bridging moderator filling in irregularities of the insert and providing a substantially smooth and contoured surface for supporting the f... | 09/02/1980 |
| 4219087 | Enlarged bore hole drilling method The method is disclosed for drilling a pilot hole and subsequently enlarging the pilot hole in earth formation. A dual concentric pipe string is used for circulating air downwardly through the outer pipe, through a pilot bit and upwardly through the bore ... | 08/26/1980 |
| 4216827 | Fluid pressure set and released well packer apparatus A double grip well bore packer run into a well casing on a pipe string has actuator means responsive to hydrostatic or applied fluid pressure to set anchor slips and deform a packing into engagement with the casing, and the setting force is locked into th... | 08/12/1980 |
| 4213508 | Downhole fire control A plurality of valve structures are incorporated in a drill pipe string for drilling a well into the earth utilizing air as the drilling fluid. A first valve is located in the drill pipe string just above the drilling bit, and an additional valve or valve... | 07/22/1980 |
| 4209193 | Rigid connector for large diameter pipe A stab type connector for large diameter pipe has a pin structure and a box structure held in interconnected relation by a locking and loading ring between a circumferential shoulder in the pin structure and a circumferential shoulder on a threaded lockin... | 06/24/1980 |
| 4200159 | Cutter head, drill bit and similar drilling tools Tool for drilling bore holes and earth formations in which a bit body matrix, including tungsten carbide, has a plurality of carriers secured thereto, to each of which a cutting element is secured by soldering, after the body matrix has been produced, to ... | 04/29/1980 |
| 4194582 | Double acting shock absorbers for drill strings A telescopic shock absorber for incorporation in a drill string connected to a rotary bit for drilling a bore hole in earth formations, the shock absorber including a single spring assembly which is compressed downwardly when sufficient downwardly directe... | 03/25/1980 |
| 4190107 | Well bore apparatus with hydraulically releasable tubing seal unit Well bore apparatus is installed in a well casing on a tubular string having a packer anchored in and forming a seal within the casing. In the tubing string above the packer is a safety valve structure held open by the pressure of fluid supplied through c... | 02/26/1980 |
| 4189185 | Method for producing chambered blast holes A pilot hole of a preselected diameter is drilled with a suitable bit in an earth formation to a desired depth. The bit is withdrawn from the hole, and an expandable hole opener or underreamer run in the pilot hole with its cutters fully retracted and clo... | 02/19/1980 |
| 4187920 | Enlarged bore hole drilling method and apparatus Method and apparatus are disclosed for drilling a pilot hole and subsequently enlarging the pilot hole in earth formation. A dual concentric pipe string is used for circulating air downwardly through the outer pipe, through a pilot bit and upwardly throug... | 02/12/1980 |
| 4187906 | Well bore apparatus with annulus pressure releasable tubing seal unit Well bore apparatus is installed in a well casing on a tubular string having a packer anchored in and forming a seal within the casing. In the tubing string above the packer is a safety valve structure held open by the pressure of fluid supplied through c... | 02/12/1980 |
| 4186727 | Air ventilation and washing system An air ventilation and washing system for extracting noxious or other impure air, such as is present above the cooking surface of a stove having automatically activated electrical and mechanical fire control apparatus selectively responsive to changes in ... | 02/05/1980 |
| 4186569 | Dual spring drill string shock absorber A drill string shock absorber has a dual spring system for absorbing vibrations and shock loads during rotary well bore drilling operations. A first spring acts in compression when sufficient weight is set down on the drill bit through the shock absorber ... | 02/05/1980 |
| 4183156 | Insole construction for articles of footwear An improved construction for articles of footwear, such as boots and shoes of all types, includes an inflated insert, preferably in the shape of an insole, having a multiplicity of intercommunicating, gas containing chambers, and a ventilated moderator me... | 01/15/1980 |
| 4180349 | Pile forging An underwater template has one or a plurality of pile housings through which piles are driven into the earth at the floor of the water to fix the template in place by forging the pile into grooves in the housing. The forging operations are performed by a ... | 12/25/1979 |
