Invention Grant
- Patent Title: Drain cleaning apparatus with restricted reverse function
- Patent Title (中): 排水清洗装置具有限制反向功能
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Application No.: US12329777Application Date: 2008-12-08
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Publication No.: US07935192B2Publication Date: 2011-05-03
- Inventor: David Silverman , Michael Silverman , Anton D. Pfeiffer
- Applicant: David Silverman , Michael Silverman , Anton D. Pfeiffer
- Applicant Address: US PA McKees Rocks
- Assignee: General Wire Spring Co.
- Current Assignee: General Wire Spring Co.
- Current Assignee Address: US PA McKees Rocks
- Agency: Metz Lewis Brodman Must O'Keefe LLC
- Agent Barry I. Friedman
- Main IPC: B08B9/045
- IPC: B08B9/045 ; B08B9/047 ; B08B1/04

Abstract:
A rotatable, portable drum auger drain cleaning device includes a rotational control which is biased towards the off position. The rotational control device is utilized in conjunction with a motor and the drum to direct drum rotation. The rotational control is typically biased in the off position making it the default position. The rotational control must therefore be manually moved to either a forward or reverse position. When in the forward position, the rotational control can be locked, and when in the reverse position, the switch must be manually held in position or the switch will return to the off position.
Public/Granted literature
- US20100139696A1 DRAIN CLEANING APPARATUS WITH RESTRICTED REVERSE FUNCTION Public/Granted day:2010-06-10
Information query
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