公开(公告)号：US20250026039A1

公开(公告)日：2025-01-23

申请号：US18774566

申请日：2024-07-16

Applicant: Andreas Stihl AG & Co. KG

Inventor： Helmut Schlessmann ,  Tobias Spring ,  Matthias Brandt

IPC: B27G3/00 ,  B27B17/02 ,  B27B17/08

Abstract: A portable work apparatus has a housing, a drive motor arranged in the housing, a guide bar with a longitudinal center axis, and a saw chain. The drive motor drives the saw chain in a rotating manner in a guide groove of the guide bar via a drive sprocket. A longitudinal plane of the guide bar is spanned by the guide groove. A discharge opening for discharging chips from the sprocket area into the outside surroundings is formed on the housing. The discharge opening has a first section formed on the first longitudinal side of the chainsaw, and a height measured parallel to the longitudinal plane and perpendicularly to the longitudinal center axis of the guide bar. The height is at least 5 mm.

公开(公告)号：US20250018547A1

公开(公告)日：2025-01-16

申请号：US18766340

申请日：2024-07-08

Applicant: Andreas Stihl AG & Co. KG

Inventor： Georg Heinzelmann ,  Johann-Sebastian Renz ,  Marco Weber

IPC: B25F5/00 ,  B27B17/00 ,  H02K7/14

Abstract: An apparatus has a tool having a tool plane and a handle. A longitudinal direction runs in the direction from the handle to the tool. An outer housing has an opening for cooling air. An electric motor is disposed in the housing and an air filter disposed on or in the opening. In a resting position on a horizontal plane, the base faces the plane. A cover lies opposite the base. A lateral surface interconnects cover and base. The outer housing, in a lateral view perpendicularly onto the tool plane, possesses a contour which in a projection onto the tool plane in the direction perpendicular to the tool plane delimits an imaginary housing surface. The filter in a projection onto the tool plane in the direction perpendicular to the tool plane possesses an outer contour delimiting an imaginary surface of at least 5% of the imaginary housing surface.

公开(公告)号：US20250017429A1

公开(公告)日：2025-01-16

申请号：US18772128

申请日：2024-07-13

Applicant: Andreas Stihl AG & Co. KG

Inventor： Benjamin Rutschke ,  Sebastian Piekarek ,  Thilo Stützel ,  Mathias Schmitz

IPC: A47L5/14

Abstract: A portable work apparatus is designed as a vacuum and/or blower. It includes a housing (2) and a drive motor (3) arranged in the housing (2). A fan (4) has a spiral housing (5) and a fan wheel (6) arranged in the spiral housing (5). The spiral housing (5) has a housing section (8) which forms a first intake opening (9) of the fan (4). The fan wheel (6) has a first wall section (10) which forms a second intake opening (12) of the fan wheel (6). A gap seal (15) is formed between the housing section (8) of the spiral housing (5) and the first wall section (10) of the fan wheel (6). At least one air guide element (16) for generating a swirl zone (30) is formed in the gap seal (15).

公开(公告)号：US20240416373A1

公开(公告)日：2024-12-19

申请号：US18747745

申请日：2024-06-19

Applicant: Andreas Stihl AG & Co. KG

Inventor： Klaus Kaupp ,  Matthias Sauter ,  Anna Mirl

IPC: B05B9/04

Abstract: A pressure washer includes a connection for a liquid source and a main line, through which a liquid is conveyable from the connection to a discharge opening of the main line via a high-pressure pump. The main line has a suction chamber between the connection and the pump. The main line has a pressure chamber between the pump and the discharge opening. The main line has an outlet through which the liquid from the main line can flow into the return line. The start valve closes so that no liquid can flow through the return line from the pressure chamber into the suction chamber if a volume flow through the start valve corresponds at least to a starting volume threshold value. The start valve has a seat arranged at the outlet opening and configured to be closed by a movement of the valve member in the flow direction.

公开(公告)号：US20240317461A1

公开(公告)日：2024-09-26

申请号：US18612861

申请日：2024-03-21

Applicant: Andreas Stihl AG & Co. KG

Inventor： Markus Pfeifer ,  Andreas Rieger ,  Alexander Fuchs ,  Jonathan Seiz ,  Jana Nuelle ,  Christin Arnold ,  Markus Koenig ,  Markus Oesterle

IPC: B65D30/00 ,  A47L9/14 ,  B65D33/02 ,  B65D33/16

CPC classification number: B65D29/00 ,  A47L9/149 ,  B65D33/02 ,  B65D33/16

Abstract: A collection bag is for receiving a collected material and an emptying opening configured in a specific shape for the collection bag which has a receiving space defined by a woven cloth. The receiving space is defined by outer edges of the collection bag. The woven cloth is at least partially air-permeable. The receiving space has an inlet opening for a blower air flow supplying the material and a closable emptying opening for removing the material. The receiving space opens into a tubular outlet section, the open end thereof forming the emptying opening. In a closed position of the outlet section, the receiving space or the emptying opening is closed. In an open position, the receiving space is connected to the surroundings via the emptying opening. In its open position, the outlet section protrudes from the bag and, in its closed position, the outlet section is located inside the bag.

公开(公告)号：US20240246121A1

公开(公告)日：2024-07-25

申请号：US18416586

申请日：2024-01-18

Applicant: Andreas Stihl AG & Co. KG

Inventor： Matthias Sauter ,  Klaus Kaupp ,  Anna Mirl

IPC: B08B3/02

CPC classification number: B08B3/026 ,  B08B2203/0205 ,  B08B2203/0229

Abstract: A pressure washer includes a connection for a fluid source, a pump, a motor. A main line has a suction chamber between a connection to a spray opening and a pump and a pressure chamber between the pump and the spray opening which are fluidically connected via a bypass line. To regulate the pressure in the pressure chamber, a free cross-sectional surface of the bypass line is adjustable. A switch-off unit causes, as a result of the pressure prevailing in the pressure chamber, that the motor is in the off-state if the pressure chamber pressure corresponds at least to a pressure threshold. A pressure build-up valve is arranged in the bypass line reducing the free cross-sectional surface of the bypass line to such an extent when a volume threshold of flow through the bypass line is exceeded, the pressure in the pressure chamber corresponds at least to the pressure threshold.

公开(公告)号：US20240207902A1

公开(公告)日：2024-06-27

申请号：US18393299

申请日：2023-12-21

Applicant: Andreas Stihl AG & Co. KG

Inventor： Simon Trinkle ,  Michael Renz ,  Christopher Tost

IPC: B08B3/02

CPC classification number: B08B3/028 ,  B08B2203/0205 ,  B08B2203/0217 ,  B08B2203/027

Abstract: A pressure washer has a connection for a source of liquid; a high pressure pump; a main line by way of which liquid via the high pressure pump is conveyable from the connection to a spray opening of the main line; and a supplemental pump for adding an additive to the liquid. The pressure washer is conceived in such a way that the additive by way of the supplemental pump is able to be fed to the main line upstream of the high pressure pump.

公开(公告)号：US20240200620A1

公开(公告)日：2024-06-20

申请号：US18391101

申请日：2023-12-20

Applicant: Andreas Stihl AG & Co. KG

Inventor： Marcel Foerster ,  Leonardo Batista ,  Tobias Freund ,  Michael-Armin Angerbauer

IPC: F16D49/08

CPC classification number: F16D49/08

Abstract: A handheld work apparatus includes a tool and a brake unit for the tool. The brake unit includes a brake band and a brake drum. The brake band wraps around the brake drum. The brake unit is configured such that, during braking, a friction surface of the brake band is in contact with a friction surface of the brake drum, with the result that the brake band and the brake drum form friction partners. At least one of the friction surfaces is configured before a first braking operation on a wear layer, the thickness of the wear layer being from 0.5 μm to 3 μm or the thickness of the wear layer being from above 3 μm to 20 μm, and the wear layer containing Fe2O3 and/or FeO.

公开(公告)号：US11980138B2

公开(公告)日：2024-05-14

申请号：US17192214

申请日：2021-03-04

Applicant: Andreas Stihl AG & Co. KG

Inventor： Markus Oesterle ,  Jonathan Seiz ,  Mario Kuschewski

IPC: A01G20/47 ,  A47L5/14

CPC classification number: A01G20/47 ,  A47L5/14

Abstract: A hand-held treatment system includes: a hand-held treatment device and at least one attachment, wherein the treatment device has a movable treatment part and an electric drive motor system for moving the treatment part. The electric drive motor system has at least one electrical path with at least one interruption. The at least one attachment has a contact bridge. The treatment device and the at least one attachment are configured for the spatial arrangement of the at least one attachment from a hazard position into a safety position, which is different from the hazard position, on the treatment device such that by the at least one attachment being in the hazard position, the at least one contact bridge does not electrically bridge the at least one interruption, and by the arrangement of the at least one attachment in the safety position, the at least one contact bridge electrically bridges the at least one interruption.

公开(公告)号：US11976587B2

公开(公告)日：2024-05-07

申请号：US18455376

申请日：2023-08-24

Applicant: Andreas Stihl AG & Co. KG

Inventor： Robert Koehli ,  Tilman Seidel ,  Jan Pawlowski ,  Tobias Deigendesch

IPC: F02B33/04 ,  F02B25/00 ,  F02B33/30 ,  F02D9/02 ,  F02F1/22 ,  F02F3/24 ,  F02M35/10 ,  F02M61/14 ,  F02B75/02

CPC classification number: F02B33/04 ,  F02B25/00 ,  F02B33/30 ,  F02D9/02 ,  F02F1/22 ,  F02F3/24 ,  F02M35/1019 ,  F02M61/14 ,  F02B2075/025

Abstract: A two-stroke engine includes a cylinder having a combustion chamber. The combustion chamber is delimited by a piston guided in a reciprocating manner in the cylinder and drives a crankshaft. A first intake channel opens into the crankcase interior. A transfer channel opens into the crankcase interior via a transfer window on a cylinder bore of the cylinder and via a passage opening. A second intake channel is provided for supplying scavenging air to the transfer channel. The first intake channel and the second intake channel are configured for supplying air. An injection valve configured for injecting the entire quantity of fuel to be supplied to the engine directly into the crankcase interior is disposed on the crankcase. A method for operating a two-stroke engine provides that the entire quantity of fuel to be supplied to the engine via a metering installation is supplied directly to the crankcase interior.