Home

Primary Examiner: Smith, Alfred E.
Assistant Examiner: Hille, Rolf
Attorney: Kersey; George E.

Next ten patents ordered by date:

Eddy current sensor
Heterodyne receiver system
Broadband waveguide mixer
High voltage triangular waveform generator
Spectrum notcher
Electrical filters
Crossed field amplifiers
Out of lock detector for phase lock loop synthesizer
Broad band orthogonal mode junction
Signal selective circuit

Translate:
En
De
Es
Fr
It
Pt
Ja
Ko
Zh

Title: Motor speed indicator

Abstract: Apparatus for indicating when a change has taken place in a desired operating condition of a device using retriggerable multivibrators which are adjusted to represent particular periods with respect to the desired operating rate of the device. In the case of a motor, the multivibrators indicate when the motor is operating at, below or above a desired operating speed.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Milligan, Lee J. (Fairfield, NJ, US)

Application Number: 452754
Filing Date: 1974-03-20
Publication_date: 1976-01-13
Assignee: Peripheral Equipment Corporation (Fairfield, NJ)
Primary Class(es): 324/161 324/76.72
Other Classes:
US Patent Ref:

3146432	Aug, 1964	Johnson	324/161.
3585400	Jun, 1971	Brayton	324/161.
3719888	Mar, 1973	Sampey	324/161.
3739367	Jun, 1973	Fathauer	324/161.

Other Refs: Other References: E. M. Dumstorff et al, Digital Speed Checking Circuit, IBM Tech. Discl. Bull., 15(12), May, 1973, pp. 1223.