Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Reexamination Certificate
2007-03-20
2007-03-20
Keasel, Eric (Department: 3753)
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
C137S454200, C137S550000
Reexamination Certificate
active
10900181
ABSTRACT:
A venting valve for a fuel vessel of a portable handheld work apparatus has a valve housing which includes a base body and a valve cover. A valve plate is mounted between the base body and the valve cover. The valve plate controls a pressure compensating channel connecting the vessel interior space to the outside of the vessel. A cover cap extends over the valve cover and is fixed with an attachment shoulder on the base body. To reliably prevent a separation of the cover cap from the base body, a collar is provided on the liquid vessel wherein the attachment shoulder of the cover cap engages. The collar overlaps the free end of the attachment shoulder over a pregiven axial length (L). The inner diameter (I) of the collar is configured only slightly greater than the outer diameter (A) of the free end of the attachment shoulder.
REFERENCES:
patent: 1498358 (1924-06-01), De Krafft
patent: 3297260 (1967-01-01), Barlow
patent: 4298020 (1981-11-01), Inada et al.
patent: 6116271 (2000-09-01), Nickel
patent: 6648004 (2003-11-01), Lau
patent: 2004/0112429 (2004-06-01), Mack
patent: 100 12 893 (2001-09-01), None
patent: 2001-295955 (2001-10-01), None
Machine translation of the above Japanese patent.
Hettmann Heinz
Kremsler Dieter
Andreas Stihl AG & Co. KG
Keasel Eric
Ottesen Walter
Price Craig
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