Section of a shaftless spiral conveyor

- Spirac Engineering AB
Description

The sole FIGURE is a perspective view of a section of a shaftless spiral conveyor showing my new design, it being understood that the conveyor is of indeterminate length.

Referenced Cited
U.S. Patent Documents
D292938 November 24, 1987 Tarlton et al.
D296489 June 28, 1988 Nair
705365 July 1902 Law
961340 June 1910 Cormack
973921 October 1910 Dodge
3565226 February 1971 Winchester
3976176 August 24, 1976 Kurtz et al.
4269302 May 26, 1981 Garvey
Foreign Patent Documents
294187 April 1965 NLX
Patent History
Patent number: D326944
Type: Grant
Filed: Oct 10, 1989
Date of Patent: Jun 9, 1992
Assignee: Spirac Engineering AB (Malmo)
Inventor: Richard L. Bruke (Bunkeflostrand)
Primary Examiner: Wallace R. Burke
Assistant Examiner: H. Baynham
Law Firm: Ladas & Parry
Application Number: 7/418,454
Classifications
Current U.S. Class: Belt Or Roller Conveyor (D34/29)