JOHN STEPHEN BAER
Engineers in Bar Harbor, ME

4068985, Jan 17, 1978

Apr 6, 1976

5/674141

John S. Baer - Bar Harbor ME

F04C 100

418 36

A rotary engine or pump employs a block or housing having a cylindrical cavity along the axis of which extends a cylindrical drive shaft supported on the block to permit rotation thereof. Within the cavity, parallel edge walls axially spaced apart from one another and rotatable relative to the shaft and the cavity define between them the bounds of energy chambers. Between these parallel edge walls are arranged an even number of outwardly directed imperforate movable walls with alternate movable walls being attached to and moving with one of the edge walls and intermediate movable walls being attached to and moving with the other edge wall, such that the edge walls and movable walls, the drive shaft and the cavity walls of the block form a plurality of essentially separate and non-intercommunicating energy chambers between the movable walls. The movable walls of the energy chambers are rotatable about the axis of the shaft and rotate with and, in fact, drive the shaft. Inlet and outlet port means through said block are circumferentially spaced around the circumference of the cylindrical cavity to respectively admit fluid into the successive energy chambers which pass the inlet port means as the movable walls move apart and exhaust fluid from the successive energy chambers which pass the outlet port means as the movable walls close together.

5019977, May 28, 1991

Nov 7, 1988

7/268802

Daniel J. LaPointe - Bar Harbor ME
Michael Vietti - Atlantic ME
John S. Baer - Bar Harbor ME

RainWise, Inc. - Bar Harbor ME

G06F 1554, G01W 104

364420

A weather station display system displays weather data on a video monitor, TV receiver or other raster screen display. The weather data is derived from a weather station having multiple weather parameter sensors or transducers for measuring weather parameters and generating electrical signals representative of the measured values of the weather parameters. The electrical signals are conditioned and converted to digitally coded weather data. A microprocessor periodically samples and stores the digitally coded weather data and transfers weather data to a screen memory for raster scanning onto a raster screen display. The microprocessor also loads screen display format data including a main screen display format to the screen memory from program and screen data memory. A light pen coupled to the raster controller permits interrogation of character locations for selectively modifying displayed weather data. The program components stored in program memory direct updating weather data, user interactive light pen recall of maximum and minimum weather data, and interactive assembly of user messages.

4207483, Jun 10, 1980

Sep 1, 1978

5/938925

John S. Baer - Bar Harbor ME

Warner Electric Brake & Clutch Co. - Beloit WI

H02K 3700

310 49R

An electric step motor has a rotor member and a stator member aligned on a common axis with one of the two members having two pairs of interdigital pole teeth extending perpendicularly to the axis. The two pairs of pole teeth are axially spaced from each other with the inner pole teeth in each pair spaced both radially and circumferentially from the outer pole teeth in that pair. A pair of coils are associated with the two pairs of interdigital pole teeth for magnetizing the inner and outer pole teeth in each pair with opposite polarities when the corresponding coil is energized. The other member has multiple permanent magnets spaced circumferentially from each other and located axially between the two pairs of interdigital pole teeth so that energization of either coil draws the permanent magnets into register with a selected pair of interdigital pole teeth. The permanent magnets are polarized in the axial direction with each adjacent pair of the permanent magnets preferably polarized in opposite directions, and the pole teeth in one of the two interdigital pairs are preferably circumferentially offset from the pole teeth in the other pair.

5285691, Feb 15, 1994

Dec 17, 1992

7/992506

John S. Baer - Bar Harbor ME

Dana Corporation - Toledo OH

G01L 302

73862325

There is provided an apparatus for measuring operating parameters of a rotating shaft, which apparatus includes an encoder module attached to a first end of the shaft, an elongate member having a first end attached to a second end of the shaft and extending along the shaft, and an encoder disk attached to a second end of the elongate member and operatively disposed in proximity to the encoder module, such that twisting of the shaft caused by torque applied thereto will cause relative angular displacement between the encoder module and the encoder disk. In a further aspect of the invention, there is provided an apparatus for measuring the rate of revolution of a shaft, which apparatus includes a hollow, cylindrical, inwardly facing race defined within the shaft, a freely rolling ferromagnetic ball disposed in the race, and a permanent magnet with a coil therearound fixedly disposed with respect to the shaft and disposed near the race such that proximity of the ball to the magnet and coil will change the amount of magnetic flux to which the coil is otherwise subjected, so that the coil will output a pulse of current each time the magnet passes the ball as the shaft rotates.

5038607, Aug 13, 1991

Jan 4, 1990

7/461044

John S. Baer - Bar Harbor ME
Michael A. Vietti - Swan's Island ME

RainWise, Inc. - Bar Harbor ME

G01W 102, G01P 507

73189

A wind speed and wind direction signal generator includes first and second pulse signal generators each with a respective stator and rotor. The stator for each pulse generator has at least two stator coils mounted at a radial angle relative to each other in the direction of rotation of a rotor so that pulse signals excited on the stationary output lines of the two stator coils are phase shifted relative to each other at a phase detectable angle. The rotor has at least one permanent magnet with two poles spaced from each other for rotation relative to the respective stator coils and for exciting the pulse signals on the stator coil stationary output lines. First and second wind propellers are secured to the respective rotors and are oriented to compass directions at approximately 90. degree. defining a quadrant of a compass coordinate system. The wind propellers cause rotation of the respective rotors at respective frequencies proportional to first and second wind speed components.

5117690, Jun 2, 1992

Aug 30, 1990

7/575062

John S. Baer - Bar Harbor ME

RainWise, Inc. - Bar Harbor ME

G01W 102

73189

A wind speed and wind direction indicator is constructed on a center support pole or mast having a vertical scale of wind speed indicia for visually reading wind speed at a distance from the pole. A swivel head is mounted at the top of the pole for rotation to different compass directions. A rigid arm pendulum is pivotally coupled to the swivel head for pivotal motion of the pendulum to different angles with respect to the support pole. A wind drag structure such as a wind sock is coupled to the free end of the rigid arm pendulum for angular positioning in response to varying wind speed. A sliding collar is mounted on the support pole for sliding motion up and down over the scale of wind speed indicia. A line is coupled between the free end of the rigid arm and the sliding collar for sliding motion of the collar over the scale of wind speed indicia in response to varying wind speed. A generally cylindrical compass direction sleeve is mounted on the support pole in relation to the swivel head and rigid arm pendulum.

4667514, May 26, 1987

May 1, 1985

6/729280

John S. Baer - Bar Harbor ME

G01L 712, G01L 914

73386

Parameter sensors and monitors are described incorporating one of a variety of parameter responsive structures constructed and arranged for expansion and contraction causing a component of motion and displacement along at least one direction in response to variations of a selected parameter. A reference mounting supports the parameter responsive structure and either a magnet element or Hall effect transducer is secured relative to the reference mounting or housing in alignment with a selected direction of a component of motion and displacement caused by expansion and contraction of the parameter responsive structure. The other of said magnet element and Hall effect transducer is mounted for relative displacement along said selected direction in response to expansion and contraction of the parameter responsive structure. The magnet element and linear Hall effect transducer are juxtaposed relative to each other for variable spacing in response to changes in the selected parameter by expansion and contraction of the parameter responsive structure. An HET enhancer in the form of a magnet receiver sleeve of magnetically permeable material enhances the linearity and sensitivity of the HET voltage response to magnet element displacement.

4106339, Aug 15, 1978

Sep 28, 1977

5/837103

John Stephen Baer - Bar Harbor ME

G01K 1300

73339C

A first thermometer is conventionally calibrated and a second is calibrated to read a predetermined temperature lower than actual temperature and provided with a heater resistor in good heat transfer relation to its bulb. Switch means connects a battery to the resistor to heat the second thermometer until it is observed to read the same as the first. Then the switch is repositioned such that appropriate circuitry causes reduced heating such that the elevated temperature condition of the second thermometer is merely "held" at that position and the bulb of the second thermometer is exposed to the wind and after a predetermined time (on the order of 30 seconds) the second thermometer is read, its reading representing the effective temperature as the result of wind chill.

4287762, Sep 8, 1981

Aug 6, 1979

6/063789

John S. Baer - Bar Harbor ME

Rainwise, Inc. - Pitman NJ

G01W 104

73170R

A totally digitalized weather station provides a digital display with selection elements for selecting a particular transducer and indication elements for indicating which parameter is being sensed at the time. Elements are provided to select from memory maximum and minimum readings of various parameters. Some transducers may employ a broadly new digital technique whereby the dial cooperable with a pointer on the shaft is used to produce digital calibrations which are attached to the shaft and move with the shaft and are read by at least a pair of fixed heads. In non-linear situations, corresponding scales are adjustable rotationally relative to one another to permit the corresponding calibrations of the two scales to be present underneath the respective reading heads simultaneously.

3943762, Mar 16, 1976

Oct 15, 1974

5/514407

John Baer - Bar Harbor ME

G01W 114

73171

A rain gauge comprising a counter and a pivoted bi-stable receiver having two compartments and which is adapted to pivot between first and second limit positions. A collector operates to collect the rainwater and directs it into one or the other of the compartments depending upon where the receiver is positioned. When the operative receiver compartment accumulates a predetermined amount of water, for example water representative of one-tenth of an inch of rainfall, it pivots to the other limit position, placing the other compartment in the operative position, dumping the contents of the first compartment and actuating a counter which registers the increment of rainfall. The actuation of the counter is accomplished by applying an electrical pulse to the counter, the pulse being generated by the pivotal movement of the receiver. The pulse is generated by a sensor cooperating with and sensing receiver movement such as reed switch responsive over the middle range of its movement to a magnet carried by the receiver. Adjustable counterweight means are provided to adjust the balance of the receiver to enable accurate calibration of the gauge.