公开(公告)号：WO1997015044A1

公开(公告)日：1997-04-24

申请号：PCT/US1996016235

申请日：1996-10-11

Applicant: MTD PRODUCTS INC.

Inventor： MTD PRODUCTS INC.

IPC: G10H01/00

CPC classification number: G01H3/08

Abstract: An apparatus for testing mechanical devices using sonic signatures in order to determine the operability of the device under test. The output from the sensor (10) is first examined for out-of-range random results in order to discard deviant samples from a general factory environment. The preliminary filter (20) is used to restrict the output of the sensor to frequency ranges related to the inherent structural characteristics of the device under test. After the signal has been rectified by rectifier (30), it provides important information about the rotational components of the device under test. The signal is then passed to secondary filter (40) for minimizing data collection requirements. The signal is then passed to a fast Fourier Transformer (50) to determine the frequency content of the signal and is compared to references (60) for known parameters of the device under test.

Abstract translation: 用于使用声波签名来测试机械装置的装置，以便确定被测装置的可操作性。 首先检查传感器（10）的输出是否超出范围的随机结果，以便从一般的工厂环境中丢弃偏离的样本。 预过滤器（20）用于将传感器的输出限制在与被测设备的固有结构特征相关的频率范围内。 整流器（30）对整流信号进行整流后，提供有关被测器件旋转分量的重要信息。 然后将信号传递到二级过滤器（40），以最小化数据收集要求。 然后将信号传递到快速傅立叶变换器（50）以确定信号的频率内容，并将其与参考（60）与被测器件的已知参数进行比较。

公开(公告)号：WO1997014940A1

公开(公告)日：1997-04-24

申请号：PCT/US1996016131

申请日：1996-10-15

Applicant: MTD PRODUCTS INC.

Inventor： MTD PRODUCTS INC. ,  GEIB, Richard, Carter ,  SCHOSSLER, Frank

IPC: G01H17/00

CPC classification number: G01H3/08

Abstract: A device for testing mechanical devices using acoustic signature analysis of the sonic signature of such devices correlated to pre-determined known characteristics or parameters developed from valid devices to predict the long term operability of other unknown devices in a noisy environment like a factory or an airport wherein other sources of sound and/or vibration are present.

Abstract translation: 用于使用这种设备的声音签名的声学签名分析来测试机械装置的装置，其与从有效装置开发的预定的已知特征或参数相关联，以预测其他未知装置在诸如工厂或机场的嘈杂环境中的长期可操作性 其中存在其它声音和/或振动源。

公开(公告)号：WO1984002054A1

公开(公告)日：1984-06-07

申请号：PCT/US1983000594

申请日：1983-04-22

Applicant: MTD PRODUCTS INC.

Inventor： MTD PRODUCTS INC. ,  KAESGEN, Hans-Hartmut

IPC: A01D53/00

CPC classification number: A01D34/685 ,  A01D2101/00

Abstract: An improved mowing unit having two main spaced apart unsynchronized cutting blades (11, 12) followed by a smaller auxiliary cutting blade (13), the smaller auxiliary cutting blade (13) mowing the vegetation that passes through the space (24) between the two main cutting blades (11, 12).

Abstract translation: 一种改进的割草单元，具有两个主要间隔开的不同步的切割刀片（11,12），随后是较小的辅助切割刀片（13），所述较小的辅助切割刀片（13）将经过两者之间的空间（24）的植被 主切割刀片（11,12）。

公开(公告)号：WO1984001086A1

公开(公告)日：1984-03-29

申请号：PCT/US1982001241

申请日：1982-09-14

Applicant: MTD PRODUCTS INC.

Inventor： MTD PRODUCTS INC. ,  PLAMPER, Gerhard, R. ,  KAESGEN, Hartmut ,  RUSH, Robert, W., Jr.

IPC: A01D75/20

CPC classification number: A01D34/6806 ,  A01D34/828 ,  A01D2034/6843 ,  A01D2101/00 ,  B62D51/004 ,  G05G5/005

Abstract: A mounting (12) for the throttle lever (13) and the dead-man control lever (22) to the handle (11) of an appliance such as a lawn mover, and including a locking bolt (30) carried by a leaf spring (27) to interfere with the movement of the dead-man control lever (22) so as to insure against accidental or unintentional movement of the dead-man control from one position to another.

公开(公告)号：WO1983002923A1

公开(公告)日：1983-09-01

申请号：PCT/US1982000195

申请日：1982-02-18

Applicant: MTD PRODUCTS INC.

Inventor： MTD PRODUCTS INC. ,  PLAMPER, Gerhard, R.

IPC: B60K41/24

CPC classification number: A01D34/6812 ,  A01D2101/00 ,  F16D67/02

Abstract: Mécanisme d'embrayage et de frein pour une tondeuse du type rotatif ou analogue dans lequel une plaque de frein (28) peut être sollicitée contre des éléments de frottement (27) et être éloignée de ceux-ci, ces éléments de frottement (27) pouvant également engager une plaque d'embrayage (16), les surfaces des éléments de frottement (27) étant disposées de manière à assurer alternativement une action de freinage et d'embrayage.