Marking device

Details Marking device Marking device

1986-04-25

1988-09-06

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

251 8, 81468, B25B 2314, F16L 5514

Patent

active

047684070

ABSTRACT:
A marking device for automatic marking of threaded joints tightened by a pneumatic power wrench, wherein a marking liquid container (48), a metering pump (37), a pressure air supply valve (31) and a marking liquid outlet passage (55) form a unit detachably clamped onto the power wrench housing (10). Pressure air communication passages (24, 25) feed the marking device directly with pressure air from the air supply passage (13) of the power wrench. The marking liquid container (48) comprises a replaceable collapsible tube which is pressurized all around in a pressure air supplied chamber (28). The single stroke metering pump (37) delivers for each stroke a well defined quantity of marking liquid to the outlet passage (55) which is formed by a fine hose made of plastic material with non-adhesive properties relative to the marking liquid. A pressure air operated feed valve (62) is arranged to prevent back flow and other uncontrolled flow of marking liquid through the outlet hose (55) by compressing the latter.

REFERENCES:
patent: 3693483 (1972-09-01), Palmer et al.
patent: 4548382 (1985-10-01), Otting

Affiliated with

Also associated with

Rating

Marking device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Marking device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Marking device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1600297