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US 4,989,323 AGranted
Portable power unit for various power tolls
AssigneeCaspro Mechanical Technologies, Inc.
InventorsKim P. Casper, Rolf Wustrau, J. David Meister
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a portable power unit for use with various power tools.
Claims20
Portable apparatus carried on the back of an operator for operating quickly attachable and detachable power tools, comprising:
- a backpack;
- a power unit mounted on said backpack;
- a flexible shaft connected at one end to said power unit;
- a quick attach and detach drive coupling means at the other
- end of said flexible shaft from said power unit;
- said drive coupling means including driving engagement means driven by said flexible shaft;
- a driven device including a quick attach and detach driven coupling means;
- said driven coupling means including an engaging means adapted for interlocking with said driving engagement means and for driving said driven device;
- said drive coupling means and said driven coupling means including a male attachment and detachment means and a female attachment and detachment means, wherein one of said attachment and detachment means is located on said drive coupling means and the other is located on said driven coupling means, and including at least one spring loaded locking ball located in one of said attachment and detachment means for attachment to and detachment from a groove located on the other of said attachment and detachment means.
6 more elements
Portable apparatus carried on the back of an operator for operating quickly attachable and detachable power tools, comprising:
- a backpack;
- a power unit mounted on said backpack;
- a flexible shaft connected at one end to said power unit;
- a quick attach and detach drive coupling means at the other end of said flexible shaft;
- said drive coupling means including
- a shaft driven by an external rotating power source, driving engagement means driven by said shaft and female attachment and detachment means having at least one spring loaded locking ball and at least one lug protruding from an end of said female attachment and detachment means;
- and
- a quick attach and detach power tool coupling means including an engaging means adapted for interlocking with said driving engagement means and for driving the power tool and male attachment and detachment means external to said engaging means, said male attachment attachment means includes a clutch merchant having at least on groove for locking with said locking ball.
5 more elements
Portable apparatus carried on the back of an operator for operating quickly attachable and detachable power tools, comprising:
- a backpack;
- a power unit mounted on said backpack;
- a flexible shaft connected at one end to said power unit;
- a quick attach and detach drive coupling means at the other end of said flexible shaft;
- said drive coupling means including
- a shaft driven by an external rotating power source,
- a driving engagement means driven by said shaft, female attachment and detachment means having at least one spring loaded locking ball and at least one lug protruding from an end of said female attachment and detachment means and at least one control mechanism connected to said flexible shaft including a deactivation means whereby rotational drive to said flexible shaft may be selectively deactivated;
- and
- a quick attach and detach power tool coupling means including an engaging means adapted for interlocking with said driving engagement means and for driving the power tool;
- and male attachment and detachment means external to said engaging means, said male attachment and detachment means having at least one groove for locking with said locking ball.
7 more elements
Dependencies are inferred from the claim text.