초록 ▼

In a lubricator which employs an injection pump connected with an air line to a tool by a branch air line through which pulses of air under pressure are transmitted to the pump for operating the same, a pulse counting mechanism interposed in the branch air line and including a first valve which open

In a lubricator which employs an injection pump connected with an air line to a tool by a branch air line through which pulses of air under pressure are transmitted to the pump for operating the same, a pulse counting mechanism interposed in the branch air line and including a first valve which opens the branch air line for operating the pump after each series of pulses of a predetermined number. The first valve carries a check valve operable to relieve the pressure of air trapped in the pump incidental to closing of the branch air line.

대표청구항 ▼

In a lubricator constructed and arranged to be mounted in a primary air line through which air under pressure is furnished to pneumatically operated equipment to be lubricated and having a pump communicating with said primary air line so that pulses of air under pressure in such primary air line are

In a lubricator constructed and arranged to be mounted in a primary air line through which air under pressure is furnished to pneumatically operated equipment to be lubricated and having a pump communicating with said primary air line so that pulses of air under pressure in such primary air line are transmitted to said pump for operating said pump to emit a predetermined quantity of lubricant for lubricating such equipment, the improvement comprising: a movable valve member controlling the flow of air under pressure to said pump operating the same and constructed and arranged to open on an incremental movement thereof and to remain closed during a plurality of incremental movement thereof, and a pneumatically actuated operating mechanism communicating with said primary air line and constructed and arranged to incrementally move said valve in response to successive pulses of air in said primary air line such that said pump operates only once for each series of a predetermined number of such successive pulses of air.