Screwcapping head with a hysteresis clutch

Details Screwcapping head with a hysteresis clutch Screwcapping head with a hysteresis clutch

1986-02-03

1987-06-23

Spruill, Robert L.

Package making

Closing packages and filled receptacles

Separate closure applying

53317, 192 84PM, 192 56R, 464 29, B65B 320

Patent

active

046742646

ABSTRACT:
A screwcapping head for applying prethreaded closures onto prethreaded containers is disclosed having a hysteresis clutch. The screwcapping head includes a housing adapted to be secured to a rotatable drive spindle and a quill mounted in the housing for free rotation thereto. The screwcapping head also includes a hysteresis clutch having a pair of permanent magnetic rings secured to the housing and a disc of hysteresis material secured to the quill and sandwiched between the pair of permanent magnetic rings. The clutch is capable of slipping after the application of a prethreaded closure onto a prethreaded container at a desired torque value while eliminating the torque reversal feature inherent in synchronous clutches.

REFERENCES:
patent: 3221389 (1965-12-01), Cowell
patent: 3964240 (1976-06-01), Eurard
patent: 3974884 (1976-08-01), Gidlund
patent: 4065234 (1977-12-01), Yoshiyuki et al.
patent: 4364218 (1982-12-01), Obrist
patent: 4485609 (1984-12-01), Kowal
patent: 4492068 (1985-01-01), Obrist
patent: 4599846 (1986-07-01), Ellis et al.
"Now Magnets and Sonar Make Anyone an Expert Fisherman", by Stan Fagerstrom, Popular Mechanics, Apr. 1982.

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