Expansible chamber devices – With cushioning means effective over a portion only of stroke
Reexamination Certificate
2008-07-08
2008-07-08
Leslie, Michael (Department: 3745)
Expansible chamber devices
With cushioning means effective over a portion only of stroke
C092S113000, C091S395000
Reexamination Certificate
active
07395749
ABSTRACT:
A pneumatic cylinder having a cushioning valve assembly. A tubular body is capped by a pair of cylinder heads. A hollow cylinder rod having a piston assembly and cushioning valve assembly is seated within the tubular body for reciprocating action therein. The piston assembly is formed of a piston having a bore passing longitudinally therethrough and a cylindrical collar. The collar is mounted about the outside of one end of the hollow cylinder rod and the piston caps the end. The cushioning valve assembly comprises an elongated rod having a cushion piston at one end and a head at the other and is seated within the bore of the piston, such that the cushion piston is fitted within the interior of the hollow cylinder rod.
REFERENCES:
patent: 2660984 (1953-12-01), Zumwalt
patent: 2961015 (1960-11-01), Randall
patent: 3018762 (1962-01-01), Korb
patent: 3196753 (1965-07-01), Maurer
patent: 3415159 (1968-12-01), Homlein et al.
patent: 3440930 (1969-04-01), Olson
patent: 3678805 (1972-07-01), Weyman
patent: 3727518 (1973-04-01), Gooding, Jr.
patent: 3797324 (1974-03-01), Sheesley et al.
patent: 3805672 (1974-04-01), Pekrul
patent: 3824897 (1974-07-01), Bryntse et al.
patent: 3994539 (1976-11-01), Gottlieb
patent: 4006666 (1977-02-01), Murray
patent: 4355566 (1982-10-01), Kaji
patent: 5115723 (1992-05-01), Wang
patent: 5279325 (1994-01-01), Kaspers
patent: 5285877 (1994-02-01), Bonenberger et al.
patent: 5423243 (1995-06-01), Yamashita et al.
patent: 5517898 (1996-05-01), Kim et al.
patent: 5623861 (1997-04-01), Ward et al.
patent: 5692429 (1997-12-01), Sonntag
patent: 6202536 (2001-03-01), Harju
patent: 6279451 (2001-08-01), Hirano et al.
patent: 6386147 (2002-05-01), Fransen
patent: 6422349 (2002-07-01), Veletovac
patent: 6711984 (2004-03-01), Tagge et al.
patent: 1387475 (1975-03-01), None
patent: WO 02/42649 (2002-05-01), None
Kyle C. Larry
Leslie Michael
Nexus Law Group LLP
LandOfFree
Pneumatic cylinder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pneumatic cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pneumatic cylinder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2791752