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US 6,552,891 B1Granted
Portable handheld work apparatus
AssigneeAndreas Stilhl AG & Co.
InventorKlaus Prach
Life of this patent
Estimating the term…
Abstract
The invention relates to a portable handheld work apparatus which is driven by a drive motor (1) having electrical ground (4). The drive motor (1) is configured especially as a spark-ignition engine (2). The work apparatus includes handles (5, 33) of electrically insulating material. A grounding element (6) is provided in the surface of the handle and this grounding element is conductively connected to the electrical ground (4) of the motor (1).
Claims81
A portable handheld work apparatus comprising:
- a drive motor having an electric ground;
- a handle operatively connected to said drive motor;
- said handle being made of electrically insulating material and having a surface;
- a grounding element mounted in said surface;
- means for electrically connecting said grounding element to said electric ground;
- said grounding element being an elongated metal rail;
- said handle having two openings;
- said elongated metal rail having bent-over portions at respective ends thereof fixed in corresponding ones of said openings;
- and,
- one of said bent-over portions including a snap hook and the other one of said bent-over portions including a hook engaging behind a wall of said handle.
7 more elements
A portable handheld work apparatus comprising:
- a drive motor having an electric ground;
- a handle operatively connected to said drive motor;
- said handle being made of electrically insulating material and having a surface;
- a grounding element mounted in said surface;
- means for electrically connecting said grounding element to said electric ground;
- a housing for accommodating said drive motor therein;
- said handle having a side facing toward said housing;
- and,
- said grounding element being mounted on said side of said handle.
6 more elements
A portable handheld work apparatus comprising:
- a drive motor having an electric ground;
- a handle operatively connected to said drive motor;
- said handle being made of electrically insulating material and having a surface;
- a grounding element mounted in said surface;
- means for electrically connecting said grounding element to said electric ground;
- said handle including two half shells joined to form said handle;
- said half shells conjointly defining at least three clamping points spaced one from the other;
- and,
- said grounding element being fixed by clamping at said three clamping points.
6 more elements
A portable handheld work apparatus comprising:
- a drive motor having an electric ground;
- a handle operatively connected to said drive motor;
- said handle being made of electrically insulating material and having a surface;
- a grounding element mounted in said surface;
- means for electrically connecting said grounding element to said electric ground;
- an actuator element accommodated on said handle;
- said drive motor having an actuator member;
- a transmitting member connecting said actuator element on said handle to said actuator member;
- said drive motor being an internal combustion engine;
- and,
- said actuator element being a throttle lever and said actuator member being a throttle flap of said engine.
8 more elements
A portable handheld work apparatus comprising:
- a drive motor having an electric ground;
- a handle operatively connected to said drive motor;
- said handle being made of electrically insulating material and having a surface;
- a grounding element mounted in said surface;
- means for electrically connecting said grounding element to said electric ground;
- an actuator element accommodated on said handle;
- said drive motor having an actuator member;
- a transmitting member connecting said actuator element on said handle to said actuator member;
- said electrically conducting means including said transmitting member;
- and,
- said transmitting member being connected to said electric ground.
8 more elements
A portable handheld work apparatus comprising:
- a drive motor having an electric ground;
- a handle operatively connected to said drive motor;
- said handle being made of electrically insulating material and having a surface;
- a grounding element mounted in said surface;
- means for electrically connecting said grounding element to said electric ground;
- said drive motor being a spark-ignition engine;
- an ignition switch having a ground cable;
- and,
- said grounding element being connected to said ground cable for interrupting the ignition.
6 more elements
Dependencies are inferred from the claim text.