Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage
Reexamination Certificate
2007-02-06
2007-02-06
Stashick, Anthony D. (Department: 3746)
Pumps
Condition responsive control of drive transmission or pump...
Adjustable cam or linkage
C417S053000, C417S222200, C417S269000, C092S071000
Reexamination Certificate
active
10464515
ABSTRACT:
A multi-cylinder compressor includes a valve plate having a plurality of cylinder suction ports formed therethrough, and a plurality of cylinder bores centered on an arc having a radius (R). The cylinder bores are substantially equally spaced from each other, and have a diameter (D). The compressor also includes a suction chamber having a substantially annular shape and adapted to be in fluid communication with each of the cylinder bores via the suction ports. Moreover, a center of a first of the suction ports is radially offset in a predetermined direction from a center of a predetermined suction port by a first angle, in which the predetermined suction port has a diameter (d), and the first angle equals {[(360°/N)·([N−1]−n)]+X°}. In this formula, N is a number of the suction ports formed through the valve plate, n is a number of the suction ports positioned between the first suction port and the predetermined suction port in a direction opposite to the predetermined direction, and X° is a predetermined angle which is less than or equal to {(sin−1[(D−d)/2·R])·57.3°/Radian} and greater than or equal to −{(sin−1[(D−d)/2·R]·57.3°/Radian}, and which is not equal to 0°.
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Adams Douglas E.
Ichikawa Yoshinobu
Park Jeong-il
Soedel Werner
Baker & Botts L.L.P.
Gillan Ryan P.
Sanden Corporation
Stashick Anthony D.
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