Title: Hydraulic circuit units

Abstract: A hydraulic circuit unit comprises parallel top and bottom faces and a side face for receiving a valve assembly. At least four passageways extend between the top and bottom faces and are perpendicular to them. The ends of the passageways open through the faces and the passageways are arranged with one at the center of a circle and the others regularly spaced around the circumference of the circle so that the unit may be rotated about the center of the circle to align the passageways with those of an adjacent similar unit in a plurality of positions. Connections extend between at least two of the passageways and a valve assembly positioned on the side face.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Humphreys, Geoffrey (London, GB)

Application Number: 671497
Filing Date: 1976-03-29
Publication_date: 1979-01-30
Assignee: B & G Hydraulics Limited (Worthing, GB2)
Primary Class(es): 137/561A 137/220, 137/270, 137/884
Other Classes:
US Patent Ref:

3357444	Dec, 1967	Zeuner	137/270.
3384114	May, 1968	Hathaway et al.	137/608.
3400732	Sep, 1968	Larrabee	137/608.
3503414	Mar, 1970	Schnellmann	137/608.
3602247	Aug, 1971	Bunn et al.	137/270.
3654960	Apr, 1972	Kiernan	137/271.
3658088	Apr, 1972	Jensen et al.	137/608.
3661166	May, 1972	Dickason	137/269.
3677577	Jul, 1972	Krauer et al.	137/269.
3680589	Aug, 1972	Jeans et al.	137/271.
3756274	Sep, 1973	Wolfgramm	137/561.
3765441	Oct, 1973	Chang	137/271.
3840047	Oct, 1974	Gibbins	137/608.
3879068	Apr, 1975	Stampfli	137/271.
3886638	Jun, 1976	Hayman et al.	137/561.
3891003	Jun, 1975	Duttarer	137/608.
3993091	Nov, 1976	Loveless	137/608.

Other Refs:
Primary Examiner: Cline, William R.
Assistant Examiner: Spiegel, H. Jay
Attorney: Young & Thompson