Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7418824 | Refrigerating apparatus and fluid machine therefor A complex fluid machine has an expansion-compressor device, a pump, and a motor generator, wherein the expansion-compressor device, the pump, and the motor generator are operatively connected and arranged in series, and a power transmitting device for disconnecting ... | 09/02/2008 |
| 7161253 | Portable power source A portable power source for starting a variety of outdoor power equipment. The portable power source generally includes a housing, an electrochemical power supply, a switch having an ON position with a fixed contact and a START position with a momentary contact, and... | 01/09/2007 |
| 7017871 | Electric appliance stand with simple telescopic support rod Electric appliance stand with simple telescopic support rod, including a telescopic operable arm. A lower end of the operable arm is pivotally disposed on a base seat and an upper end of the operable arm is pivotally connected with a connecting seat. The base seat i... | 03/28/2006 |
| 6933465 | Screw air compressor for a welder A portable and fully integrated welder and compressor combination includes a housing having an engine, electrical current generating alternator, and a belt-driven screw air compressor. The engine is configured to drive the generator directly, and a pulley arrangemen... | 08/23/2005 |
| 6926814 | Automatable measuring, cleaning and calibration device for pH-electrodes or electrodes for measuring redox potentials An automatable measuring, cleaning and calibrating device for pH-electrodes or electrodes for measuring redox potentials, specifically in process engineering, having an electrode armature which keeps the measuring electrode in an operating position or in a maintenan... | 08/09/2005 |
| 6099267 | Stand for a fluid compressor having an extending and rotating movable starter box base plate A fluid compressor that includes a compressor base; a compression module fixed to the base; and a compressor control device, such as a compressor starter box, fixed to the base; where the compressor base includes means for moving the compressor starter bo... | 08/08/2000 |
| 6065942 | Utility package including an air compressor and a tool compartment A utility package for installation in the bed of a pickup truck includes a frame (10) having a relatively narrow, lower vertical section (12) of a width W1 narrower than the interior spacing between the sides of the pickup truck bed while substantially sp... | 05/23/2000 |
| 5898965 | Inflation and repair device for bicycle tires An inflation/repair device for bicycle tires includes a pumping device including a head, a handle, and a piston rod having a first end slidably received in the head and a second end securely attached to the handle move therewith. The handle is releasably,... | 05/04/1999 |
| 5606769 | Wet/dry utility vacuum cleaner with detachable blower A wet/dry utility vacuum cleaner with detachable blower is disclosed. The detachable blower, when mounted in sealed relationship to a lid positioned above a utility vacuum cleaner drum, operates as a wet/dry utility vacuum cleaner. When separated from the... | 03/04/1997 |
| 5575628 | Gas compressor An internal combustion engine having cylinders and a head assembly adapted for compressing gas, wherein one or more cylinders of an inline-cylinder engine are modified to compress flammable gas, such as natural gas. The engine cylinders and head assembly ... | 11/19/1996 |
| 5404614 | Latch assembly for blower of wet/dry vacuum cleaner A quick attach-detach assembly of a wet-dry vacuum cleaner for selectively mounting an air blower on a lid includes a blower housing supporting a motor and a fan mounted to the motor and a lid to which the housing can be removably secured. The lid include... | 04/11/1995 |
| 5378113 | Apparatus for compressing gas An internal combustion engine having cylinders and a head assembly adapted for compressing gas, wherein one or more cylinders of an inline-cylinder engine are modified to compress flammable gas, such as natural gas. The engine cylinders and head assembly ... | 01/03/1995 |
| 5269665 | Portable hand-held blower/vacuum unit with resilient engine mounting system A portable, hand-held blower/vacuum unit has a housing structure defined by an upper engine shroud removably connected to the top wall of a lower impeller housing. Disposed within the shroud is a small internal combustion engine having a vertical cranksha... | 12/14/1993 |
| 5265551 | Emergency bilge pump for small boats A high capacity emergency bilge pump employs an inclined axial flow propeller in a tubular casing for discharging bilge water to a body of receiving water at a level submerged below the surface of the body of receiving water. The propeller of the bilge pu... | 11/30/1993 |
| 5201639 | In-line hand pump device A device for providing auxiliary pumping capabilities for a sump pump system and other low volume pumping systems. The in-line pumping device includes a tubular element with threaded ends to be mounted in the discharge pipe line of a sump pump system. A p... | 04/13/1993 |
| 5183392 | Combined centrifugal and undervane-type rotary hydraulic machine A rotary hydraulic machine having particular utility as a fuel pump for aircraft turbine engines that combines the desirable features of vane-type and centrifugal-type machines of similar character--i.e., high pressure positive displacement at low speed c... | 02/02/1993 |
| 5156538 | Manual pump An elongated tubular member has an upper closed end and a lower closed end with a first opening. It also has a second opening on its wall and a suction unit movable within the same. A first tubular member has a top open end and a constricted bottom end. T... | 10/20/1992 |
| 5137430 | Air pump for bicycle An air pump which can be stored in the frame of the bicycle and can also serve as the seat post of the bicycle. The air pump has an outer, tubular post having an upper end to which a bicycle seat can be secured. A rigid tube extends partially into the pos... | 08/11/1992 |
| 4987926 | Faucet using a cistern pump handle and a water mixing valve A faucet having a cistern-type pump body with a handle mounted on its upper end, and linkage connected to a rotary mixing valve mounted beneath the pump body such that when the handle is raised, a mixture of hot and cold water is delivered through a condu... | 01/29/1991 |
| 4836753 | Portable electric blower The invention concerns an air blower including a centrifugal fan which is driven by an electric motor. The blower has a two-part blower housing comprising an upper housing which encloses the motor beneath the motor cap and a lower housing. The centrifugal... | 06/06/1989 |
| 4773765 | Blender pump adaptor A pump housing is substituted for the food container of a blender. The blender blades act as a pump impeller and cause liquid to flow from a housing inlet, through the housing, and through a housing outlet. The pump housing therefore modifies a blender in... | 09/27/1988 |
| 4758130 | Two rotary gear pumps arranged in different plates The invention provides an oil pump as a replacement for the conventional piston type oil pumps used in Triumph motor cycles. The pump of the invention comprises a plurality of plates with a feed pump section between a pair of plates and a scavenge section... | 07/19/1988 |
| 4605358 | Integrated power drive and power transfer system In many aircraft, there are flight control surfaces positioned by mechanical actuation systems that are driven by hydraulic power drive units. There are also devices for transmitting hydraulic power from one aircraft hydraulic system to another in the eve... | 08/12/1986 |
| 4468222 | Intravenous liquid pumping system and method Intravenous Fluid Pumping System having a controller and a pump controlled by the controller. The controller has a sealed chamber with a flexible membrane covering a portion thereof. An incompressible fluid is disposed in the chamber. A piston member is m... | 08/28/1984 |
| 4442661 | Lawn mower pump A rotary lawn mower pump including a rotary blade lawn mower with an upper housing having wheels connected thereto, an above housing motor with a drive shaft through the housing having a rotary blade connection portion beneath the housing, an impeller pum... | 04/17/1984 |
| 4415320 | Sliding vane type rotary compressor A sliding vane type rotary compressor having a rotor, at least one vane slidably mounted on the rotor, a cylinder accomodating the rotor and the vane, and end plates fixed to both ends of the cylinder so as to close vane chambers defined by the vane, the ... | 11/15/1983 |
| 4076460 | Convertible lawn care apparatus Portable lawn care apparatus is disclosed which includes attachment assemblies for converting to a mobile vacuum, a shredder/chipper, a blower or a stationary vacuum with a hand-operated flexible hose.... | 02/28/1978 |
