Closure testing means and method

Details Closure testing means and method Closure testing means and method

1976-09-17

1979-01-23

Stearns, Richard R.

Geometrical instruments

Gauge

Screw thread

33174L, 209597, 209928, B07C 110, G01B 726

Patent

active

041353064

ABSTRACT:
The depth of thread in a roll-on closure is tested by determining the radial distance between the peak and valley defining a profile of the external surface of the threaded section. Apparatus for measuring the peak includes a first sensor broad enough to span the valley. Apparatus for measuring the valley includes a sensor able to fit into the valley. The container with the closure thereon is rotated to permit the latter sensor to enter to the full depth of the thread valley in case the point at which that sensor first encounters the surface of the closure is in a shallow end of the valley or not in the valley at all. If the second sensor moves far enough relative to the first sensor and in a radial direction with respect to the closure, the apparatus will respond to such relative movement as indicating that the closure has a predetermined thread depth. If the second sensor does not move far enough relative to the first sensor within a prescribed length of time or amount of rotation of a container, after the initiation of measurement of the closure on that container, the apparatus indicates that the thread depth of that closure is less than the predetermined value.

REFERENCES:
patent: 1319361 (1919-10-01), Rouanet
patent: 2355719 (1944-08-01), Fedorchak
patent: 2525136 (1950-10-01), Ingle
patent: 2689409 (1954-09-01), Fry et al.
patent: 2797496 (1957-07-01), Taft
patent: 3249223 (1966-05-01), Johnson et al.

Affiliated with

Also associated with

Rating

Closure testing means and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2266885