公开(公告)号：US3908895A

公开(公告)日：1975-09-30

申请号：US50658874

申请日：1974-09-16

Applicant: OUTBOARD MARINE CORP

Inventor： GRANHOLM LARS E

IPC: F02B61/04 ,  G06G1/00 ,  G06G1/02 ,  G06C3/00

CPC classification number: G06G1/0005 ,  F02B61/045

Abstract: Disclosed herein is a slide rule device including a base member and a slide member which is slidably carried by the base member. Each member has a pair of logarithmic scales which are located in spaced relation on the front faces thereof and are calibrated to respectively indicate boat gross weight, engine horsepower, boat speed and a boat performance factor which is a function of the boat gross weight, engine horsepower and boat speed and is indicative of boat performance. These scales are arranged in interrelationship on the members so that the performance factor for a boat having a known gross weight, propelled by an outboard motor or stern drive having a known horsepower, and having a known speed can be easily computed by simply moving the slide member relative to the base member to align the appropriate values of the gross weight and engine horsepower scales. Once the performance factor for a boat has been computed or estimated, the predicted speed of the boat, when there is a change in gross weight and/or engine horsepower, can be computed by aligning the appropriate values on the gross weight and engine horsepower scales.

Abstract translation: 本文公开了一种滑动规则装置，其包括基部构件和滑动构件，该滑动构件由基座构件可滑动地承载。 每个构件具有一对在其前表面上以间隔关系定位的对数刻度，并且被校准以分别表示船的总重量，发动机马力，船速度和作为船的总重量，发动机的函数的船舶性能因数 马力和船速，并指示船的表现。 这些秤在构件之间相互关联地布置，使得具有已知总重量的船的性能系数可以通过简单地移动滑块来容易地计算，该艇由具有已知马力的舷外马达或船尾驱动器推进并具有已知速度 成员相对于基座构件，以对齐总重量和发动机马力标度的适当值。 一旦计算或估计了一艘船的性能因子，当总重量和/或发动机功率发生变化时，船舶的预测速度可以通过将总重量和发动机功率尺度的适当值对齐来计算 。

公开(公告)号：US3371672A

公开(公告)日：1968-03-05

申请号：US55398566

申请日：1966-05-31

Applicant: OUTBOARD MARINE CORP

Inventor： HALE GORDON B ,  GRANHOLM LARS E

IPC: B63B17/02

CPC classification number: B63B17/02