Patent ID: 6330737
Filing Date: 2001-12-18
Classification: B25B,Y10T

Abstract:
A tool for mounting disk valves in motor cylinder heads, the disk valves being of the type that on its rod (6) has a number of transversal, circumferential grooves (7) for accommodating a corresponding number of beads (8) on the insides of two substantially semi-circularly shaped locking bodies (9, 9'), which taper conically from the rear ends towards the front ends (24, 25) and which have the purpose of securing a locking ring (13) against the spring (12) of a valve, comprising:a shaft (1), which in the region of one end has a spring-loaded tap (4) that is pressable into an outer cavity in the end portion of the shaft, and, proximate said spring-loaded end, two cross-sectionally vaulted clamping arms (3, 3') that are placed on opposed sides of the shaft,which clamping arms are articulatedly connected with the shaft and activated by at least one spring means (5) that holds the clamping arms (3, 3') swivelled inwards against the shaft (1), and against the action of which the clamping arms are pivotable outwards to a position distal from the shaft (1) and the tap (4),the clamping arms (3, 3') having free end portions incorporating holding means for keeping said locking bodies (9, 9') in a given axial position relative to the clamping arms, in order to allow a transfer of the locking bodies to the valve rod (6), by positioning the tap (4) against the valve rod and pressing the tap into the cavity of the shaft (1), whereinsaid holding means comprise at least one protrusion (20) which protrudes relative to a cross-sectionally concave and axially straight inside on the free end portion of the individual clamping arm (3, 3') in order to serve as a carrier for the individual locking body, and which has a support surface (21) that is placeable against the rear end (24) of the locking body and extend to said inside in order to hold the convexly vaulted outside (23) of the locking body placed against the concave inside of the clamping arm when the locking body is moved from the tap up to said groove (7) on the valve rod (6), thereby distancing the inner edge on a front narrow end portion (25) of the locking body from external envelope surfaces of the tap (4) and the valve rod (6).