Valve spool
Description
FIG. 1 is a perspective view of a valve spool, showing my new design,
FIG. 2 is a side elevational view thereof,
FIG. 3 is an end elevational view thereof, the opposite end being the same as the end shown;
FIG. 4 is a cross sectional view taken on line 4--4 of FIG. 2;
FIG. 5 is a cross sectional view taken on line 5--5 of FIG. 2;
FIG. 6 is a perspective view of a modified form of the valve spool shown in FIG. 1, wherein the difference resides in the radially extending slots;
FIG. 7 is a side elevational view of FIG. 6;
FIG. 8 is an end elevational view of FIG. 6, the opposite end being the same as the end shown;
FIG. 9 is a cross sectional view taken on line 9--9 of FIG. 7; and
FIG. 10 is a cross sectional view taken on line 10--10 of FIG. 7.
Referenced Cited
U.S. Patent Documents
D240733 | July 1976 | Roller |
2764181 | September 1956 | Richolt |
2971536 | February 1961 | Junck et al. |
4009864 | March 1, 1977 | Schexnayder |
Patent History
Patent number: D253716
Type: Grant
Filed: Aug 8, 1977
Date of Patent: Dec 18, 1979
Inventor: Russell W. Spitz (Boardman, OH)
Primary Examiner: James R. Largen
Attorney: Michael Williams
Application Number: 5/822,422
Type: Grant
Filed: Aug 8, 1977
Date of Patent: Dec 18, 1979
Inventor: Russell W. Spitz (Boardman, OH)
Primary Examiner: James R. Largen
Attorney: Michael Williams
Application Number: 5/822,422
Classifications
Current U.S. Class:
D23/19
International Classification: D2301;
International Classification: D2301;