Patent Number: 6,305,418

Title: Hydraulic valve

Abstract: In a hydraulic valve (10), the housing (34) is composed of plate-shaped segments (36 to 46). Sections of longitudinal channels (96, 97) are formed by recesses having cross-section with a closed edge which overlap or are flush with corresponding channel sections of the adjacent channels. Radial channels, which are in communication with a supply connection (11, 12) or a consumer connection (13, 14) are formed by radial indentations (86 to 89) of central openings (75, 77, 79 and 81) of housing segments (38, 40, 42 and 44). Grooves (91, 92, 93 and 93) which widen the cross-section of the central housing channel (71) within which the valve piston (19) can slide in a pressure tight manner in the axial direction and/or rotation outwards are formed by recesses (75, 77, 79 and 81) of the housing segments (38, 40, 42 and 44) having a larger diameter and which positively overlap the central channel (71) in cross-section. The segment plate (36 to 46) are positively and form-fittingly joined and/or materially joined into a dimensionally stable package into which welding material is laid into closed compartments which are formed by recesses (121 to 134, 126) of the segment plates (37 to 45) interconnected into groups and which extend over the whole series of joints of the segment plates (36 to 46).

Inventors: Schulze; Eckehart (D-71287 Weissach, DE)

Assignee:

International Classification: F16K 27/04 (20060101); F16K 11/07 (20060101); F16K 11/085 (20060101); F16K 11/02 (20060101); F16K 11/065 (20060101); F15B 013/04 ()

Expiration Date: 10/23/2018