Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8179004 | Motor assembly with switch module A new motor assembly uses a switch module to facilitate the assembly of an electric motor. The switch module can be prefabricated, and is connected to a terminal block on the motor by plug and socket connectors on the terminal block and on a terminal end of the modu... | 05/15/2012 |
| 8074321 | Dual-tank vacuum cleaner The disclosed vacuum cleaner has a smaller, separable vacuum unit that is releasably attached to a larger, base unit tank assembly. It provides a combination vacuum cleaner that has small- and large-capacity configurations suited for vacuum applications having diffe... | 12/13/2011 |
| D646860 | Vacuum cleaner | 10/11/2011 |
| D646033 | Vacuum cleaner | 09/27/2011 |
| 8015661 | Vacuum with rechargeable battery A vacuum cleaner includes a tank having a bottom and an inlet for receiving debris, a motor assembly disposed adjacent to the tank, the motor assembly adapted to draw debris into the tank through the inlet, a battery pack disposed adjacent the bottom of the tank, an... | 09/13/2011 |
| D644801 | Vacuum cleaner | 09/06/2011 |
| D644800 | Vacuum cleaner | 09/06/2011 |
| D640849 | Vacuum cleaner | 06/28/2011 |
| D640024 | Vacuum cleaner | 06/14/2011 |
| D638181 | Cleaning tool | 05/17/2011 |
| D638180 | Vacuum cleaner | 05/17/2011 |
| D637778 | Vacuum cleaner | 05/10/2011 |
| D636954 | Vacuum cleaner | 04/26/2011 |
| D634084 | Vacuum cleaner | 03/08/2011 |
| D633668 | Vacuum cleaner | 03/01/2011 |
| 7893641 | Method and apparatus for thermal sensing in an electrically commutated motor A control circuit for a motor includes a voltage regulator having a thermal shutdown apparatus that turns off the voltage regulator while retaining power to a micro-controller preventing an automatic restart of the motor absent a recycling of power when the temperat... | 02/22/2011 |
| D632444 | Vacuum cleaner | 02/08/2011 |
| D631627 | Vacuum cleaner | 01/25/2011 |
| D631216 | Vacuum cleaner | 01/18/2011 |
| D624258 | Vacuum cleaner | 09/21/2010 |
| D623813 | Vacuum cleaner | 09/14/2010 |
| D623812 | Vacuum cleaner | 09/14/2010 |
| D623367 | Vacuum cleaner accessory holder | 09/07/2010 |
| D622463 | Vacuum cleaner | 08/24/2010 |
| 7687777 | Aperture assembly for use with a photosensor system and a securing mechanism for the aperture assembly A cost-effective photosensor system for rotor position detection includes securing an aperture assembly to an off-the-shelf infrared radiation-emitting component and/or an off-the-shelf infrared radiation-detecting component. The application discloses an aperture as... | 03/30/2010 |
| 7654480 | Mulcher The disclosed mulcher has a base unit and a shredding blade in a removable assembly. Two different embodiments are disclosed. In both embodiments, shredded material is removed from air exiting the shredding blade before it reaches an exhaust port. In one embodiment,... | 02/02/2010 |
| D606716 | Vacuum cleaner nozzle | 12/22/2009 |
| D599968 | Vacuum cleaner | 09/08/2009 |
| D599064 | Yard vacuum | 08/25/2009 |
| 7549191 | Gutter cleaning blower vacuum attachment apparatus A water jet-assisted blowing and vacuum apparatus for cleaning gutters having a curved end attachment member for connection to an elongated air conduit to reach into gutter areas, and a pressurized water nozzle mounted to the air conduit curved end member and orient... | 06/23/2009 |
| D592817 | Vacuum cleaner | 05/19/2009 |
| D591015 | Vacuum cleaner | 04/21/2009 |
| D590553 | Combined sander and polisher attachment for vacuum cleaner | 04/14/2009 |
| D588761 | Vacuum | 03/17/2009 |
| D584017 | Vacuum cleaner | 12/30/2008 |
| D581114 | Vacuum cleaner | 11/18/2008 |
| 7443123 | Method and apparatus for preventing overheating in an electronically commutated motor assembly A control circuit for a motor includes a voltage regulator having a thermal shutdown apparatus that turns off the voltage regulator when the temperature of the control circuit rises above a pre-determined threshold level, wherein the voltage regulator is used to pro... | 10/28/2008 |
| D573320 | Combined shredder and vacuum cleaner | 07/15/2008 |
| D573319 | Vacuum cleaner | 07/15/2008 |
| 7389563 | Cleaning device with pivoting tank The disclosed cleaning device has a suction unit that can be used to take in liquid, a tank that can be used to hold the liquid, a mouth that can be used to pour liquid from the tank, and wheels that form a base. It also has a pivot that can be used to rotate the ta... | 06/24/2008 |
