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Self-unjamming motorized trimming apparatus, particularly a hedge trimmer

A pruning equipment and motorized technology, applied in the direction of hedge trimming equipment, cutting equipment, sawing equipment, etc., can solve the problems of impossible to unblock, mechanical damage to the device, insufficient power, etc.

Inactive Publication Date: 2011-11-02
PELLENC SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] A significant disadvantage of current motorized cutting tools, especially hedge trimmers with cutting bars of the type described above, is that, since their drive motors only turn in one direction, when a piece of wood that is too thick or too hard enters the teeth of the cutting blade When the space between them cannot be cut due to lack of power, the eccentric cannot reach its highest point where the direction of movement of the cutting blade can be reversed, and the device is jammed and stopped
Unblocking is not possible without removing the block of wood lodged between the teeth of the cutting blade by pulling it hard out, with the risk of mechanical damage to the device and injury to the user
Moreover, this blockage causes the device to stop working at inconvenient times, which is very stressful for the operator

Method used

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  • Self-unjamming motorized trimming apparatus, particularly a hedge trimmer
  • Self-unjamming motorized trimming apparatus, particularly a hedge trimmer
  • Self-unjamming motorized trimming apparatus, particularly a hedge trimmer

Examples

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Embodiment Construction

[0032] An advantageous but by no means limiting example of realization of the self-unplugging or "auto-unjamming" pruning device according to the invention is described with reference to said figures.

[0033] In the ensuing description and in the claims, the new term "self-disclogging" will be used in place of the term "self-dispensing", which means that the Self-automatically eliminates (releases) wedge jams or jams.

[0034] On the other hand, the term "pruning equipment" refers to motorized portable pruning devices such as hedge trimmers, lawn trimmers and the like, as well as cutting implements for equipping automated pruning machines such as pre-pruners or pruners and the like.

[0035] The hedge trimmer shown as an example is characterized by a cutting bar 1 essentially consisting of two symmetrical blades 2A, 2B superimposed on one another, the longitudinally opposite edges of which are each equipped with spaced apart The cutting teeth 3A, 3B are triangular or trapezo...

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PUM

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Abstract

The present invention relates to a motorized trimming apparatus comprising two blades (3A, 3B) placed side-by-side, has triangularly or trapezoidally cut teeth spaced apart from each other, at least one of said blades being movable to enable the cutting by shearing of wood inserted between said teeth, and connected to a drive device (13), characterized in that the apparatus comprises a means for controlling the drive device, said control means (14) being constructed or configured so as to detect stops in movement of the movable blade(s) and to instantaneously and automatically control the reversal of the rotational direction of said drive device and thus control the reversal of the direction of movement of said movable blade(s).

Description

technical field [0001] The present invention relates to a motorized pruning (pruning) device that automatically removes plugs or "can automatically eliminate blockages (stuck, wedged, blocked)". Background technique [0002] The invention can be very advantageously applied to hedge trimmers for trimming hedges to shape and maintain hedges. This portable motorized tool is characterized by a cutting bar comprising two symmetrical blades placed one above the other and provided with spaced apart triangular or trapezoidal teeth, at least one of which is driven In order to make a very rapid linear alternating motion to shear the wood held between the teeth of the blade of the cutting bar. [0003] Either both blades are provided with cutting teeth, or only one of them is equipped with cutting teeth. [0004] Both blades may be movable and driven in alternating linear motion in reversible directions, or, of the two blades, only one blade may be driven in alternating linear motion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G3/04A01G3/053
CPCA01G3/04A01G3/053A01G3/085B27B3/18B27B3/26
Inventor R·佩朗
Owner PELLENC SA
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