 Surge suppression system for submersible electrical motors |
| I claim: 1. An electrically surge protected submersible motor comprising a housing in communication ... |
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| Submersible pump |
| An object of the present invention is, therefore, to overcome the above-mentioned problems ... |
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| Submersible pump support |
| The disadvantages of the prior art are overcome by the present invention which provides a ... |
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| Submersible motor unit |
| The object of the invention lies in the improvement of a submersible motor unit of the previously ... |
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| Submersible motor unit |
| The present invention relates to a submersible motor unit for use in driving a pump with the pump ... |
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| End shield constructed with a separate component holder |
| The electric motor of the present invention is provided with a component compartment integrally ... |
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| Cover for electric motor |
| Among the several objects and features of the present invention may be noted the provision of a ... |
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| Integrated motor/generator/flywheel utilizing a solid steel rotor |
| These and other objects of the invention are accomplished in accordance with the principles of the ... |
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| Motor having rotatable shaft coupled with worm shaft |
| The present invention addresses the above disadvantages. Thus, it is an objective of the present ... |
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| Rotary actuating drive and rotary switch |
| According to the present invention, in a rotary actuator of the type cited above, elements are ... |
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High performance bicycle propulsion
| Details |
Inventors: MacCready, Jr., Paul B.; Nicoloff, William J.;
Assignee: Aerovironment, Inc. (Monrovia, CA)
Primary Examiner: Boehler; Anne Marie
Assistant Examiner:
Attorney, Agent or Firm: Haefliger; William W.
For use in determination of chain transmitted power, the combination comprising a tensioned chain having a succession of chain links with undulating edges; an idler supported to be driven in rotation by the chain, and having an undulating perimeter surface having a sine wave configuration and whose width dimension exceeds the width dimension between outermost chain surfaces; and certain of the chain undulating edges engaging portions of the idler undulating perimeter surfaces, whereby the chain changes direction as it travels lengthwise relative to the idler and rotatably drives the idler. |
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DETAILED DESCRIPTION Referring first to FIGS.
1 and 3, a typical power drive chain 10 includes pairs of like intermediate links 11 and 12, pairs of like side links 13 and 14, and pivots such as rivets 15 interconnecting the side links, via circular bores 16 and 17 through the links, the rivets located at equally spaced locations.
The links typically have plate configuration, with intermediate link edges 11a and 12a presented inwardly and edges 11b and 12b presented outwardly, and side link edges 13a and 14a presented inwardly and edges 13b and 14b presented outwardly.
The links 11 and 12 inner edges 11a and 12a are convex, as for example circular, and slidably ride on the surfaces 20a of like peripheral undulations formed by a "wavy" idler 20, as seen in FIG.
3.
Support means generally indicated at 21 in FIG.
2 supports the idler 20 to be yieldably urged (as by a spring 110) toward the chain 10, and means generally indicated at 22 is associated with the idler support means 21 for determining or sensing side force F exerted on the idler, and which is proportional to chain tension.
Means 23 may also be associated with the idler to determine its rate of rotation R resulting from chain endwise travel; and a multiplying means 24 may have inputs as at 25 and 26 from the outputs of 22 and 23 to multiply values corresponding to F and R to determine power P.
Power is transmitted by the chain, as from a power transmitting sprocket 30 having teeth 31 meshing with the chain as at gaps formed between the links, in known manner.
A driven sprocket is shown at 34 engaging the chain in known manner, and the chain is tensioned between 30 and 34 in power transmitting use.
More specifically, cable or chain tension is commonly measured by forcing the cable laterally from its general longitudinal orientation to bend the cable by angle .
theta.
(see FIG.
2).
The lateral force F is measured.
The tension T is proportional to F, with the constant of proportionality being a known function of .
theta.
.
For a bicycle chain-drive system, FIG
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