公开(公告)号：WO1993021613A1

公开(公告)日：1993-10-28

申请号：PCT/US1993003734

申请日：1993-04-20

Applicant: SPARTON CORPORATION

Inventor： SPARTON CORPORATION ,  BAXTER, Melburn, J.

IPC: G08B03/00

CPC classification number: G08B3/10

Abstract: A vehicle horn (10) is disclosed with an electronic switching circuit (62) which operates at a switching frequency equal to the resonant frequency of the horn. A sweep frequency oscillator (64) generates a switching pulse train. A transducer (96) and signal conditioner (102) produces a horn output pulse train (118) at a frequency equal to the acoustic output of the horn. The horn output pulse train is applied to one input of a phase comparator (98). The output of the sweep frequency oscillator is applied to the other input of the phase comparator. The phase comparator generates a stop signal for the sweep frequency oscillator when the input signals are in phase with each other which signifies that the horn is operating at its resonant frequency.

Abstract translation: 公开了一种车辆喇叭（10），其具有以等于喇叭的共振频率的开关频率工作的电子开关电路（62）。 扫频振荡器（64）产生开关脉冲串。 换能器（96）和信号调节器（102）以等于喇叭的声输出的频率产生喇叭输出脉冲串（118）。 喇叭输出脉冲串被施加到相位比较器（98）的一个输入端。 扫频振荡器的输出被施加到相位比较器的另一个输入端。 当输入信号彼此同相时，相位比较器产生用于扫频振荡器的停止信号，这表示喇叭以其谐振频率工作。

公开(公告)号：WO1990009904A1

公开(公告)日：1990-09-07

申请号：PCT/US1990001030

申请日：1990-02-22

Applicant: SPARTON CORPORATION

Inventor： SPARTON CORPORATION ,  ROLINSKI, Adam, E. ,  PATTOK, Greg, R.

IPC: B60K41/26

CPC classification number: F16H61/22 ,  B60T11/105 ,  F16H59/10 ,  F16H59/54 ,  F16H2059/746 ,  F16H2061/223 ,  Y10T70/5951 ,  Y10T74/20238 ,  Y10T477/649

Abstract: A service brake and shift lever interlock system for a vehicle is operably controlled by a logic control circuit to prevent movement of the shift lever (328) from the 'Park' position when the ignition switch is in the 'Start' or 'Run' position and the service brake pedal is in a brake release position (i.e., the vehicle brakes are not applied). The interlock system does not prevent movement of the shift lever (328) from the 'Park' position under other conditions when the ignition switch is in the 'Start' or 'Run' position. An ignition interlock system prevents movement of the shift lever from the 'Park' position when the ignition switch is in the 'Lock' position.

公开(公告)号：WO1989008602A1

公开(公告)日：1989-09-21

申请号：PCT/US1989001103

申请日：1989-03-17

Applicant: SPARTON CORPORATION

Inventor： SPARTON CORPORATION ,  REMPINSKI, Donald, R. ,  BRITT, Donald, R.

IPC: B66D01/14

CPC classification number: B66D1/34 ,  B62D43/045 ,  B66D1/00

Abstract: A sheave plate and cable assembly for a tire lift/carrier winch comprises a sheave plate (52) having spaced apart side faces (60) defining a plate thickness therebetween and having an outer peripheral edge (62) interconnecting the side faces (60) and including an arcuate cable-wrapping track (64) thereon. The end of a cable (40) extends into the sheave plate (52) between the side faces (60) and is captured therein by the sheave plate (52) which is die cast therearound. A portion of the cable (40) end extends into the sheave plate (52) in arcuate manner about the axis of rotation of the sheave plate (52) and terminates in a flattened head portion (104). The thickness of the captured cable (40) end is less than the plate (52) thickness whereby the cable (40) end is confined between the side faces (60) of the sheave plate (52) and does not extend beyond the side faces (60) into adjacent side plates (50, 51) of the sheave assembly (20).

公开(公告)号：WO1989007874A1

公开(公告)日：1989-08-24

申请号：PCT/US1989000637

申请日：1989-02-16

Applicant: SPARTON CORPORATION

Inventor： SPARTON CORPORATION ,  VINES, Arthur, Dudley ,  SCHONFELD, Frederick, Andrew ,  ESPAT, Ricardo

IPC: H04Q09/00

CPC classification number: H04Q9/00 ,  G08C19/26

Abstract: A plurality of addressable transducers (20) at remote locations are connected to a home station (10) by a pair of transmission lines (12) which carry power as well as address signal to the transducers (20) and carry response signals from the transducers (20) when addressed, to the home station (10). Each transducer (20) carries a decoder (34) which is programmed to recognize a particular code, and a response circuit (36, 38) comprising a current sink oscillator (36) to modulate the transmission line current at a frequency corresponding to the measured parameter. The response circuit (36, 38) operates on an analog voltage representing the measured condition by an A/D converter (102) to generate a corresponding digital number, a clock (98) provides a fixed frequency, a divider (104) divides the fixed frequency by the digital number to provide a resultant frequency, which in turn is divided by a flip-flop (106) to yield a square wave output.