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 |
| 8052343 | Ring binder mechanism A ring mechanism for retaining loose-leaf pages including a housing, hinge plates, and ring members mounted on the hinge plates for retaining pages on the mechanism. An actuating lever is pivotally mounted on the housing for engaging the hinge plates and pivoting th... | 11/08/2011 |
| 8038361 | Ready lock ring binder mechanism A ring binder mechanism has a housing and hinge plates supported for pivoting movement by the housing. The mechanism has rings, each including a first ring member mounted on a first hinge plate and a second ring member. The first ring member is movable relative to t... | 10/18/2011 |
| 8002488 | Soft close ring binder mechanism A ring binder mechanism that retains loose-leaf pages and has ring members that do not snap together when they close and that easily open and close as pages accumulate. The mechanism includes a housing that supports two hinge plates for loose pivoting motion, moving... | 08/23/2011 |
| 7950867 | Lever for a ring binder mechanism A ring mechanism for retaining loose-leaf pages includes a housing and hinge plates supported by the housing. Rings for retaining the loose-leaf pages are mounted on the hinge plates for movement with the hinge plates between an open and closed position. A lever is ... | 05/31/2011 |
| 7891901 | Ready lock ring binder mechanism A ring binder mechanism that retains loose-leaf pages. The mechanism includes a housing and hinge plates supported by the housing for pivoting about a pivot axis relative to the housing. The mechanism further includes rings that hold the loose-leaf pages. Each ring ... | 02/22/2011 |
| 7828491 | Travel bar for use with a ring mechanism A ring mechanism for retaining loose-leaf pages has supporting hinge plates for pivoting motion relative to a housing to open and close ring members. The mechanism further includes a thin, flat travel bar between the housing and the hinge plates. The travel bar move... | 11/09/2010 |
| 7819602 | Ring binder mechanism A ring binder has housing including a central portion and lateral sides. Hinge plates are held between the lateral sides of the housing. Each of multiple rings includes at least one ring member mounted for movement with the hinge plates between closed and open posit... | 10/26/2010 |
| RE41852 | Rectilinear binder ring | 10/26/2010 |
| D622316 | Dual lever ring mechanism with rectilinear binder rings | 08/24/2010 |
| 7762734 | Ring binder mechanism A ring binder mechanism that retains loose-leaf pages and has ring members that gently close and readily lock together. The mechanism comprises a housing that supports two hinge plates for loose pivoting motion, moving the ring members between an open position and a... | 07/27/2010 |
| 7758271 | Ring mechanism biased to closed and locked position A ring binder mechanism that retains loose-leaf pages and has ring members that readily lock together in a closed position, preventing accidental opening of the ring members and loss of pages. The mechanism comprises a housing that supports two hinge plates for pivo... | 07/20/2010 |
| 7744300 | Ready lock ring binder mechanism A ring binder mechanism that retains loose-leaf pages and has ring members that readily lock together, preventing accidental loss of pages. The mechanism comprises a housing that supports two hinge plates for pivoting motion, bringing the ring members to either an o... | 06/29/2010 |
| 7726897 | Ring binder mechanism A ring mechanism having a housing and at least one ring configurable between a closed position for retaining loose-leaf pages and an open position. A pair of hinge plates, operatively connected to the ring, are pivotable within the housing between first and second p... | 06/01/2010 |
| D616023 | Push button ring mechanism having rectilinear binder rings | 05/18/2010 |
| 7665926 | Ring mechanism with spring biased travel bar A ring mechanism for retaining loose-leaf pages comprises a housing, hinge plates, and ring members. The housing supports the hinge plates for pivoting motion relative to the housing to open and close ring members mounted thereon. The mechanism comprises a thin, fla... | 02/23/2010 |
| 7661899 | Lever for a ring binder mechanism A ring mechanism for retaining loose-leaf pages comprises a housing and ring members for holding loose-leaf pages that are moveable relative to the housing between an open and closed position. An actuation system moves the ring members and includes hinge plates pivo... | 02/16/2010 |
| 7600939 | Ring binder mechanism with sliding hinge plate A ring binder mechanism includes a housing and first and second hinge plates supported by the housing for pivoting movement relative thereto. A first ring member is mounted on the first hinge plate and moveable with the pivoting motion of the first hinge plate relat... | 10/13/2009 |
| 7597498 | Positive lock ring binder mechanism A ring binder mechanism includes a housing having longitudinal ends and a top surface, hinge plates supported by the housing for pivoting motion about a pivot axis relative to the housing, and rings for holding loose-leaf pages. Each ring includes first and second r... | 10/06/2009 |
| 7549817 | Ready lock ring binder mechanism A ring binder mechanism that retains loose-leaf pages and has ring members that readily lock together, preventing accidental loss of pages. The mechanism comprises a housing that supports two hinge plates for loose pivoting motion, bringing the ring members to eithe... | 06/23/2009 |
| 7534064 | Ring mechanism biased to closed and locked position A ring binder mechanism that retains loose-leaf pages and has ring members that readily lock together in a closed position, preventing accidental opening of the ring members and loss of pages. The mechanism comprises a housing that supports two hinge plates for pivo... | 05/19/2009 |
| 7513708 | Ring binder mechanism having slide connector A ring binder mechanism comprises a housing, at least one ring for mounting loose leaf paper, and at least one mounting post extending outwardly from the housing. A base plate is adapted to be attached to a ring binder cover and has a surface adapted to receive the ... | 04/07/2009 |
| D585935 | Rectilinear binder ring | 02/03/2009 |
