WO2010030281A1 - Mower with adjustable hand grips and partially enclosed operator present switch - Google Patents

Mower with adjustable hand grips and partially enclosed operator present switch Download PDF

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Publication number
WO2010030281A1
WO2010030281A1 PCT/US2008/076143 US2008076143W WO2010030281A1 WO 2010030281 A1 WO2010030281 A1 WO 2010030281A1 US 2008076143 W US2008076143 W US 2008076143W WO 2010030281 A1 WO2010030281 A1 WO 2010030281A1
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WO
WIPO (PCT)
Prior art keywords
hand grip
adjustable
adjustable hand
mower
actuator
Prior art date
Application number
PCT/US2008/076143
Other languages
French (fr)
Inventor
Richard Bednar
Original Assignee
Husqvarna U.S. Holding, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Husqvarna U.S. Holding, Inc. filed Critical Husqvarna U.S. Holding, Inc.
Priority to PCT/US2008/076143 priority Critical patent/WO2010030281A1/en
Publication of WO2010030281A1 publication Critical patent/WO2010030281A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D34/00Mowers; Mowing apparatus of harvesters
    • A01D34/01Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/82Other details
    • A01D34/824Handle arrangements
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D34/00Mowers; Mowing apparatus of harvesters
    • A01D34/01Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/67Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
    • A01D34/68Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
    • A01D2034/6843Control levers on the handle of the mower

Abstract

A mower (101) that includes an adjustable hand grip (102, 103) that includes a mechanism (301) for locking a control lever (305) of the adjustable hand grip (102, 103) in a neutral position without going beyond the neutral position to be engaged, and an operator present switch (401). The operator present switch (401) including a switch (403), the switch (403) being located inside the adjustable hand grip (102, 103), and an actuator (402), the actuator (402) being connected to the switch (403) and located partially inside the adjustable hand grip (102, 103), the actuator (402) having no exposed edges outside of the adjustable hand grip (102, 103) capable of getting caught on objects external to the adjustable hand grip (102, 103). The adjustable hand grip (102, 103) is adjustable by moving it to a different position along an elongated slot (202) on a tube (204) on the mower (101).

Description

MOWER WITH ADJUSTABLE HAND GRIPS AND PARTIALLY ENCLOSED OPERATOR PRESENT SWITCH

BACKGROUND OF THE INVENTION

[0001] The present invention is related to mowers, and more specifically to a mower with adjustable hand grips and partially enclosed operator present switch. [0002] Currently, walk behind mowers are being used by many today.

However, current walk behind mowers have hand grips that are attached in a preset position from the manufacturer. This does not allow adjustment of the hand grips for comfort of a user of the mower. Further, current pistol grip style latches for hand grips of a mower, that hold the mower control levers in a neutral position have to go beyond the neutral position to be engaged. On hydrostatic drive walk behind mowers, this causes a problem where the mower backs up as the neutral latches are engaged. Further, current mowers use external arms and linkage or expensive piezoelectric devices to operate an operator present switch on the mower. These external arms get caught on obstacles and get bent making operation of the operator present switch action ineffective.

BRIEF SUMMARY OF THE INVENTION

[0003] According to one aspect of the present invention, a mower (101) includes a hand grip (102), the hand grip (102) including a mechanism (301) for locking a control lever (305) of the hand grip (102) in a neutral position without going beyond the neutral position to be engaged and a frame (104), the frame (104) being configured to support the hand grip (102).

[0004] According to another aspect of the present invention, a mower (101) includes an operator present switch (401), the operator present switch (401) further including a mechanical switch (403), the mechanical switch (403) being located

Page l of 18 inside the hand grip (102), and an actuator (402), the actuator (402) being connected to the mechanical switch (403) and located partially inside the hand grip (102), the actuator (402) having no exposed edges outside of the hand grip (102) capable of getting caught on objects external to the hand grip (102). [0005] According to a further aspect of the present invention, a mower (101) includes an adjustable hand grip (102, 103), a frame (104), the frame (104) being configured to support the adjustable hand grip (102, 103), and a tube (204), the tube (204) being attached to the frame (104) and comprising at least one elongated slot (202), the adjustable hand grip (102, 103) configured to be attached to the tube (204) via the at least one elongated slot (202), a position of the adjustable hand grip (102, 103) being adjustable by moving the adjustable hand grip (102, 103) to a different position along the at least one elongated slot (202). [0006] According to a still further aspect of the present invention, an adjustable hand grip (102, 103) includes a mechanism (301) for locking a control lever (305) of the adjustable hand grip (102, 103) in a neutral position without going beyond the neutral position to be engaged, and an operator present switch (401) , the operator present switch (401) being located partially inside the adjustable hand grip (102, 103) and having no exposed edges capable of getting caught on objects external to the adjustable hand grip (102, 103), wherein the adjustable hand grip (102, 103) is configured to be attached in an adjustable manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention is further described in the detailed description which follows in reference to the noted plurality of drawings by way of non- limiting examples of embodiments of the present invention in which like reference numerals represent similar parts throughout the several views of the drawings and wherein:

[0008] Figure 1 is a diagram of a mower with adjustable hand grips according an exemplary embodiment of the present invention; [0009] Figure 2 is a diagram of adjustable hand grips according to an exemplary embodiment of the present invention;

[0010] Figure 3 is a diagram of a neutral latch according to an exemplary embodiment of the present invention;

[0011] Figure 4 is a diagram of a neutral latch according to another exemplary embodiment of the present invention;

[0012] Figure 5 is a diagram of an operator present switch and actuator according to an exemplary embodiment of the present invention; [0013] Fig. 6 is a diagram of an adjustable hand grip according to another exemplary embodiment of the present invention;

[0014] Fig. 7 is a diagram of an adjustable hand grip according to a still further exemplary embodiment of the present invention; and [0015] Fig. 8 is a diagram of an exploded view of a hand grip according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0016] As will be appreciated by one of skill in the art, the present invention may be embodied as an apparatus, system, or a combination of the foregoing. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may generally be referred to herein as a "system." [0017] Embodiments according to the present invention include walk behind mowers where the position of hand grips are adjustable by a user of the mower. Therefore, the hand grips can be positioned by the user and adjusted for the individual comfort of the user. Further, hand grips in mowers according to example embodiments of the present invention include a sliding neutral latch that may be moved to lock a control lever of a mower in a neutral position while not going beyond the neutral position causing the mower to back up. In addition, embodiments according to the present invention include a mechanical operator present switch actuator that may be located at least partially inside the hand grip of the mower. The operator present switch actuator has no exposed edges thus preventing getting caught up on obstacles and getting damaged. [0018] Figure 1 shows a diagram of a mower with adjustable hand grips according an exemplary embodiment of the present invention. The mower 101 may include one or more adjustable hand grips 102, 103 that are mounted on a frame 104 of the mower 101. According to embodiments of the present invention, each hand grip 102, 103 may be adjusted by mounting the hand grip 102, 103 in a position that is comfortable to a user of the mower. The hand grips 102, 103 may be placed on a post that is part of the frame 104 of the mower 101 where the hand grips 102, 103 may be rotated in a direction perpendicular to the direction of the post. Once rotated, the hand grips 102, 103 may then be securely attached in the desired position. [0019] Figure 2 shows a diagram of adjustable hand grips according to an exemplary embodiment of the present invention. A first hand grip 103 is shown just before being mounted to a post 204 of a frame 104 of a mower. In this exemplary embodiment, the first hand grip 103 may be slid down onto the post 204 and then secured with attachment devices such as screws, bolts, studs, etc. through holes 201 in the first hand grip 103 and holes 202 in the post 204. The holes 202 in the post 204 have an elongated elliptical shape allowing the first hand grip 103 to be mounted in various positions on the post 204 by rotating the holes 201 in the first hand grip 103 to a desired position inline with an opening in the elongated elliptical shape holes 202. In this exemplary embodiment, the elongated holes 202 are shown to have a relatively small elliptical shape, however, the elongated holes 202 may have an elliptical shape that extends around more of the perimeter of the post 204 as desired for mounting of the hand grip 103. This allows a user of the mower to mount hand grips on the mower in an adjustable manner for comfort of the user of the mower.

[0020] A second hand grip is shown mounted on a post of the frame 104 in a first hand grip position 102 and an alternate second hand grip position 203 for mounting for the hand grip. The hand grip may be rotated in a circular direction around the post and mounted in any position (e.g. first hand grip position 102, second hand grip position 203, etc.) that may be comfortable to a user of the mower.

[0021] Figure 3 shows a diagram of a neutral latch according to an exemplary embodiment of the present invention. The neutral latch 301 may include a button 302 that is slidably movable along a surface of a mower hand grip 304 and a locking member 303 internal to the hand grip 304 and attached to the button 302. The locking member 303 is in contact with a portion of a movable controller member 305 that is internal to the hand grip 304. The locking member 303 moves in a same direction as the button 302 in response to movement of the button 302. The locking member 303 is configured to lock the control member 305 in a neutral position responsive to movement of the button 301 without going beyond the neutral position. Therefore, the mower does not back up as the neutral latch 301 is engaged on a hydrostatic drive walk behind mower. The locking member 303 includes a portion in contact with a portion of the control member 305 where the portion of the locking member 303 slides along the portion of the control member 305 in response to movement of the button 302. The neutral latch 301 is shown in a non-engaged position allowing movement of the control member 305. [0022] Figure 4 shows a diagram of a neutral latch according to another exemplary embodiment of the present invention. The neutral latch 301 may include a button 302 that is slidably movable along a surface of a mower hand grip 304 and a locking member 303 internal to the hand grip 304 and attached to the button 302. The locking member 303 is in contact with a portion of a movable controller member 305 that is internal to the hand grip 304. The locking member 303 moves in a same direction as the button 302 in response to movement of the button 302. The locking member 303 is configured to lock the control member 305 in a neutral position responsive to movement of the button 301 without going beyond the neutral position. Therefore, the mower does not back up as the neutral latch 301 is engaged on a hydrostatic drive walk behind mower. The locking member 303 includes a portion in contact with a portion of the control member 305 where the portion of the locking member 303 slides along the portion of the control member 305 in response to movement of the button 302. The neutral latch 301 is shown in an engaged position where movement of the control member 305 is prevented. The locking member 303 may be retained in the engaged and/or disengaged position by the use of a spring loaded detent. The detent or detents may be located in the hand grip and engage depressions in the locking member 303. [0023] According to embodiments of the present invention, a mower hand grip 304 may also include an operator present (OPC) switch 401 that resides at least partially inside the mower hand grip 304. An operator present switch 401 according to embodiments of the present invention has no exposed edges capable of getting caught on objects external to the mower hand grip 304. A portion of the operator present switch 401 may extend exterior to the mower hand grip 304 when an operator of the mower is not present. An operator present switch 401 may include an actuator 402 that may be partially located inside a mower hand grip 304 of a mower, and a switch 403 that makes contact with the actuator 402 when the operator present switch 401 is in an inactive position denoting the absence of an operator of the mower. The switch 403 may be located inside the mower hand grip 304 of the mower and be connected to electrical circuitry of the mower to enable or disable operation of the mower. In the inactive state of the operator present switch 401 shown in Figure 4 the mower may not be activated.

[0024] The actuator 402 of the operator present switch 401 may be depressed towards the mower hand grip 304 to be substantially within an interior of the mower hand grip 304. This may cause compression of a spring 402 internal to the mower hand grip 304. The depression of the actuator 402 of the operator present switch 401 causes contact with a switch 403 internal to the mower hand grip 304 to be broken and opened. This signifies that the operator is present and enables activation of movement in operation of the mower. The operator present switch 401 in Figure 4 is shown in an inactive position where the operator is not present. Further, a portion of the actuator 402 of the operator present switch 401 may extend above a surface of the mower hand grip 304 in response to a force by the spring 404 located inside the hand grip 304 on the actuator 402 when the operator is not present and no force is being exerted externally on the actuator 402. The spring 404 may exert a pressure on the actuator 402 such that a portion of the actuator 402 is extended exterior to a surface of the hand grip 304. A portion of the actuator 402 may remain located interior to the hand grip 304 and makes contact with the switch 403.

[0025] Figure 5 shows a diagram of an operator present switch according to an exemplary embodiment of the present invention. In this exemplary embodiment, an operator present switch 401 is shown in an active position where the actuator 402 of the operator present switch 401 is shown depressed such that the actuator 402 resides substantially interior to the hand grip 304. In this active state, the actuator 402 breaks contact with the switch 403 of the operator present switch 401 enabling operation of the mower. In the active state, the spring 404 is compressed by a force being exerted on the actuator402 pressing the actuator 402 internal to the mower hand grip 304. Upon release of the pressure/depression on the actuator 402, the spring 404 forces the actuator 402 out pushing at least a portion of it external to the hand grip 304 of the mower. Therefore, according to embodiments of the present invention, an operator present switch may include a switch internal to a hand grip of a mower and an actuator at least partially located internal to a hand grip of the mower where the operator present switch has no exposed edges for getting caught on obstacles external to the hand grip of the mower.

[0026] Fig. 6 shows a diagram of an adjustable hand grip according to another exemplary embodiment of the present invention. According to embodiments of the present invention, a hand grip 600 may also be secured without the use of elongated holes and may be clamped over a post of a mower, adjusted as desired by movement perpendicular to the post, and then secured using a clamping member 601 attached to or part of the hand grip 600. The hand grip 600 may be fitted over the post and then clamped onto the post using the clamping member 601 on the exterior of the post. The clamping member 601 contains holes allowing the insertion of clamping devices (e.g., bolts, screws, etc.) for clamping the hand grip 600 to the post. The clamping member 601 may be a separate member attached to the hand grip 600 or may be integral with the hand grip 600. Therefore, in this exemplary embodiment of the present invention the clamping devices may be outside of the post.

[0027] Fig. 7 shows a diagram of an adjustable hand grip according to a still further exemplary embodiment of the present invention. According to this embodiment of the present invention, an adjustable hand grip 700 may be secured by incorporating a flange 701 to the base of the adjustable hand grip 700. The flange 701 may include one or more elongated holes 702. The flange 701 may be mounted to a flat surface of the handle structure of the mower. The one or more elongated holes 702 in the hand grip flange 701 are aligned with holes, bolts or other receiving members on the flat surface of the handle structure. The one or more elongated holes 702 in the hand grip flange 701 allow rotation of the adjustable hand grip 700 to a desired position. Once the desired hand grip position is set, the adjustable hand grip 700 may be secured to the flat surface of the handle structure of the mower.

[0028] Fig. 8 shows a diagram of an exploded view of a hand grip according to an exemplary embodiment of the present invention. As noted previously, according to embodiments of the present invention, the locking member 303 may be retained in the engaged and/or disengaged position by the use of a spring loaded detent 801. The detent or detents 801 may be located in the hand grip 800 and engage depressions in the locking member 303.

[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

[0030] Although specific embodiments have been illustrated and described herein, those of ordinary skill in the art appreciate that any arrangement which is calculated to achieve the same purpose may be substituted for the specific embodiments shown and that the invention has other applications in other environments. This application is intended to cover any adaptations or variations of the present invention. The following claims are in no way intended to limit the scope of the invention to the specific embodiments described herein.

Claims

CLAIMSWhat is claimed is:
1. A mower (101) characterized by: a hand grip (102), the hand grip (102) comprising: a mechanism (301) for locking a control lever (305) of the hand grip (102) in a neutral position without going beyond the neutral position to be engaged; and a frame (104), the frame (104) being configured to support the hand grip (102).
2. The mower according to claim 1, the mechanism (301) for locking the control lever (305) further characterized by: a button (302), the button (302) being moveable along an exterior surface of the hand grip (102); and a locking member (303), the locking member (303) being attached to the button and in contact with a portion of the control lever (305) located inside the hand grip (102), the locking member (303) moving in a same direction as the button (302) responsive to movement of the button (302), the locking member (303) residing inside the hand grip (102) and locking the control lever (305) in a neutral position responsive to movement of the button (302).
3. The mower according to claim 2, wherein a portion of the locking member (303) in contact with the portion of the control lever (305) slides along the portion of the control lever (305) responsive to the movement of the button (302).
4. The mower according to claim 2, the locking member 303 being retained in one of an engaged or disengaged position by one or more spring loaded detent 801, the one or more detent 801 being located in the hand grip 800 and engaging depressions in the locking member 303.
5. A mower (101) characterized by: an operator present switch (401), the operator present switch (401) further comprising: a mechanical switch (403), the mechanical switch (403) being located inside the hand grip (102); and an actuator (402), the actuator (402) being connected to the mechanical switch (403) and located partially inside the hand grip (102), the actuator (402) having no exposed edges outside of the hand grip (102) capable of getting caught on objects external to the hand grip (102).
6. The mower (101) according to claim 5, further characterized by a spring (404), the spring (404) residing inside the hand grip (102) and being engaged with the actuator (402), the spring (404) being compressed by depression of the actuator (402) signifying an operator is present.
7. The mower (101) according to claim 5, wherein the actuator (402) is configured to be substantially located inside the hand grip (102) when depressed signifying an operator is present.
8. A mower (101) characterized by: an adjustable hand grip (102, 103); a frame (104), the frame (104) being configured to support the adjustable hand grip (102, 103); and a tube (204), the tube (204) being attached to the frame (104) and comprising at least one elongated slot (202), the adjustable hand grip (102, 103) configured to be attached to the tube (204) via the at least one elongated slot (202), a position of the adjustable hand grip (102, 103) being adjustable by moving the adjustable hand grip (102, 103) to a different position along the at least one elongated slot (202).
9. The mower (101) according to claim 8, wherein the adjustable hand grip (102, 103) is attached to the at least one elongated slot (202) using at least one fastening device passing through at least one hole in the adjustable hand grip (102, 103) and through the at least one elongated slot (202).
10. The mower (101) according to claim 8, wherein the fastening device comprises one of a bolt, a screw, or a stud.
11. The mower (101) according to claim 8, wherein the adjustable hand grip (102, 103) is adjustable in a direction substantially perpendicular to a direction of the tube (204).
12. The mower (101) according to claim 8, wherein the position of the adjustable hand grip (102, 103) being adjustable allows adjustment of the adjustable hand grip (102, 103) for individual comfort of a user of the mower (101).
13. An adjustable hand grip (102, 103) characterized by: a mechanism (301) for locking a control lever (305) of the adjustable hand grip (102, 103) in a neutral position without going beyond the neutral position to be engaged; and an operator present switch (401) , the operator present switch (401) being located partially inside the adjustable hand grip (102, 103) and having no exposed edges capable of getting caught on objects external to the adjustable hand grip (102, 103), wherein the adjustable hand grip (102, 103) is configured to be attached in an adjustable manner.
14. The adjustable hand grip (102, 103) according to claim 13, the mechanism (301) for locking the control lever (305) further characterized by: a button (301), the button (301) being moveable along an exterior surface of the adjustable hand grip (102, 103); and a locking member (303), the locking member (303) being attached to the button (301) and in contact with a portion of the control lever (305) located inside the adjustable hand grip (102, 103), the locking member (303) moving in a same direction as the button (302) responsive to movement of the button (302), the locking member (303) residing inside the adjustable hand grip (102, 103) and locking the control lever (305) in a neutral position responsive to movement of the button (302).
15. The adjustable hand grip (102, 103) according to claim 13, wherein a portion of the locking member (303) in contact with the portion of the control lever (305) slides along the portion of the control lever (305) responsive to the movement of the button (301).
16. The adjustable hand grip (102, 103) according to claim 13, the operator present switch (401) further characterized by: a switch (403), the switch (403) being located inside the adjustable hand grip (102, 103); and an actuator (402), the actuator (402) being connected to the switch (403) and located partially inside the adjustable hand grip (102, 103), the actuator (402) having no exposed edges outside of the adjustable hand grip (102, 103) capable of getting caught on objects external to the adjustable hand grip (102, 103).
17. The adjustable hand grip (102, 103) according to claim 16, further characterized by a spring (404), the spring (404) residing inside the adjustable hand grip (102, 103) and being engaged with the actuator (402), the spring (404) being compressed by depression of the actuator (402) signifying an operator is present.
18. The adjustable hand grip (102, 103) according to claim 16, wherein the actuator (402) is configured to be substantially located inside the adjustable hand grip (102, 103) when depressed signifying an operator is present.
19. The adjustable hand grip (102, 103) according to claim 13, wherein the adjustable hand grip (102, 103) configured to be attached to a tube (204) on a frame (104) of a mower (101) via at least one elongated slot (202) in the tube (204), a position of the adjustable hand grip (102, 103) being adjustable by moving the adjustable hand grip (102, 103) to a different position along the at least one elongated slot (202).
20. A mower (101) characterized by: an adjustable hand grip (600), the adjustable handgrip having a clamping member (601); a frame (104), the frame (104) being configured to support the adjustable hand grip (600); and a tube (204), the tube (204) being attached to the frame (104), the adjustable hand grip (600) configured to be attached to the tube (204) by positioning the adjustable handgrip (600) over the tube (204) and clamping the adjustable handgrip (600) to the tube (204) using the clamping device (601) on an outside of the tube (204), a position of the adjustable hand grip (600) being adjustable by moving the adjustable hand grip (600) to a different position along the tube (204) before clamping the adjustable handgrip (600) to the tube (204) using the clamping device (601).
21. A mower (101) characterized by: an adjustable hand grip (700), the adjustable hand grip (700) having a flange 701 on a base of the adjustable hand grip 700 for mounting of the adjustable hand grip 700 on the mower (101), the flange 701 including at least one elongated hole 702; and a frame (104), the frame (104) being configured to support the adjustable hand grip (700), the adjustable hand grip (700) configured to be attached to the frame (104) via the at least one elongated hole (702), a position of the adjustable hand grip (700) being adjustable by moving the adjustable hand grip (700) to a different position along the at least one elongated hole (702) on the frame (104) of the mower (101).
PCT/US2008/076143 2008-09-12 2008-09-12 Mower with adjustable hand grips and partially enclosed operator present switch WO2010030281A1 (en)

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EP2949195A4 (en) * 2013-01-25 2016-10-19 Suzhou Cleva Electric Appliance Co Ltd Operating control mechanism for garden tool
EP2949196A4 (en) * 2013-01-25 2016-10-19 Suzhou Cleva Electric Appliance Co Ltd Switch control mechanism for garden tool

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US4161639A (en) * 1977-07-01 1979-07-17 Mtd Products Inc. Handle safety switch
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DE3500591A1 (en) * 1985-01-10 1986-07-10 Baer Elektrowerke Gmbh & Co Kg Electrical switching device
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US20030000190A1 (en) * 2001-06-27 2003-01-02 Exmark Manufacturing Company, Inc. Operator control system for self-propelled vehicles
EP1579757A1 (en) * 2004-03-22 2005-09-28 HONDA MOTOR CO., Ltd. Power working machine
EP1867227A1 (en) * 2006-06-16 2007-12-19 Deere & Company Dual lever steering control mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2227937A1 (en) 2009-03-11 2010-09-15 Honda Motor Co., Ltd. Bail-free machine control devices and methods
EP2949195A4 (en) * 2013-01-25 2016-10-19 Suzhou Cleva Electric Appliance Co Ltd Operating control mechanism for garden tool
EP2949196A4 (en) * 2013-01-25 2016-10-19 Suzhou Cleva Electric Appliance Co Ltd Switch control mechanism for garden tool

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