Combined roller and impulse heat sealing apparatus

- DeRoyal Industries, Inc.
Description

FIG. 1 is an enlarged front perspective view of a combined roller and impulse heat sealing apparatus showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view taken from the left of FIG. 1;

FIG. 5 is a side view taken from the right of FIG. 1;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
3047991 August 1962 Siegel
3185609 May 1965 Merithew et al.
3367261 February 1968 Kashiwagi
3490981 January 1970 Shanklin
3547742 December 1970 Cottrell
3738897 June 1973 Bianchini
3830681 August 1974 Wilson
3847712 November 1974 Hubbard
3912575 October 1975 Zelnick
4156382 May 29, 1979 Baker
4221626 September 9, 1980 Clay
Patent History
Patent number: D281169
Type: Grant
Filed: Jan 27, 1983
Date of Patent: Oct 29, 1985
Assignee: DeRoyal Industries, Inc. (Powell, TN)
Inventor: Arthur R. Hillier (Knoxville, TN)
Primary Examiner: B. J. Bullock
Law Firm: Luedeka & Neely
Application Number: 6/461,661
Classifications
Current U.S. Class: Vacuum Or Heat Seal (D15/146)