The broken lines in the Figures are for illustrative purposes only and form no part of the claimed invention.
 
                 Patent Grant
 Patent Grant
                     D612756
 D612756
                    
    
    
    
    
    
    
    
    
    
The broken lines in the Figures are for illustrative purposes only and form no part of the claimed invention.
| Number | Name | Date | Kind | 
|---|---|---|---|
| 5179235 | Toole | Jan 1993 | A | 
| 5435091 | Toole et al. | Jul 1995 | A | 
| 6526688 | Danielson et al. | Mar 2003 | B1 | 
| 6578311 | Danielson et al. | Jun 2003 | B2 | 
| 6591536 | Houde-Walter et al. | Jul 2003 | B2 | 
| 7260910 | Danielson | Aug 2007 | B2 | 
| 7269920 | Staley, III | Sep 2007 | B2 | 
| 7614760 | Sharrah et al. | Nov 2009 | B2 | 
| 20090183416 | Danielson | Jul 2009 | A1 |