Hugh H Tyler DeceasedDowney, CA

3974430, Aug 10, 1976

Sep 6, 1974

5/503814

Hugh J. Tyler - Santa Ana CA
Dennis E. Newell - El Segundo CA

Robertshaw Controls Company - Richmond VA

H02H 504

318473

A motor protection circuit employs a resistance bridge circuit with one side having multiple branches containing temperature responsive resistances for sensing an overheat condition in the motor. Semiconductor voltage sensing devices, such as high gain amplifiers, are responsive to voltages between a standard sensing node and each of the sensing nodes in the multiple branched side of the bridge circuit. Logic facilities respond to any of the sensing devices to operate switching facilities controlling energization of the motor. Additionally, the protection circuit may include a lubricating oil pressure responsive control which is not affected by power loss or spurious signals, and which may be controlled by the operation of a motor control switch.

4042966, Aug 16, 1977

Jan 15, 1976

5/649432

Dennis E. Newell - El Segundo CA
Hugh J. Tyler - Santa Ana CA

Robertshaw Controls Company - Richmond VA

H02H 504

361 27

A motor control circuit for controlling the operation of a motor having main running-speed windings and also start-up windings includes a fixed time delay circuit to energize the main windings after a time delay following energization of the startup windings. In addition a lock-out circuit is provided to prevent re-start of the circuit following a particular fault condition.

4000663, Jan 4, 1977

Aug 22, 1974

5/499786

Hugh J. Tyler - Santa Ana CA

Robertshaw Controls Company - Richmond VA

F16K 3104

744248VA

There is disclosed a mechanical transducer which is particularly adapted for use as an actuator for a damper in a ventilating system. The transducer comprises a housing having a motor drive unit with a rotary shaft output therefrom carried on one wall of the housing and in driving connection to a lead screw which is rotatably carried by thrust bearing means on the wall of said housing. A traveling nut member is engaged on the lead screw and a tubular work output member extends through an opposite wall of the housing in generally co-axial alignment with the lead screw. The inboard end of the tubular member is secured to the traveling nut member whereby the lead screw it totally enclosed. The outboard end of the tubular member bears a work-receiving means which, preferably, is a tapped plug for removable attachment to an actuating lever of the damper unit. The housing also contains the electronic controls for the motor drive unit, including an electrical feedback circuit having a variable, passive electrical component such as a variable resistor with a slider mounted thereon which is mechanically connected to the traveling nut member.

4131789, Dec 26, 1978

Jun 20, 1977

5/808269

Hugh J. Tyler - Santa Ana CA

Robertshaw Controls Company - Richmond VA

H05B 306

219541

An electrical heater construction having a frame carrying electrical heaters and a movable drawer-like unit that is adapted to interconnect power source leads to the heaters when the unit is in one position thereof relative to the frame, the frame carrying a movable latch member that is operatively associated with the unit to latch the unit in an out position thereof when the unit is moved out of the one position thereof to the out position to disconnect the power source leads from the heaters whereby the unit cannot be moved in any direction from the out position thereof until the unit is unlatched from the latch member by the latch member being manually moved to an unlatching position thereof.

3961237, Jun 1, 1976

Nov 11, 1974

5/522326

Hugh Jean Tyler - Santa Ana CA

Robertshaw Controls Company - Richmond VA

G05D 2324

323 19

A thermostatic device for generation of a plurality of direct current analog signals responsive to temperature deviation of a control zone from a plurality of set temperature points. The device has a plurality of direct current voltage signal generators, each of which includes a thermistor with a negative temperature coefficient in circuit with a variable resistor and an adjustment mechanism associated therewith whereby the value of the resistor can be fixedly adjusted to provide a limited degree of adjustability of the set temperature points. The adjustment mechanism includes fixed stops whereby the lowermost set temperature point can not be raised and the uppermost set temperature point can not be lowered. In a typical embodiment, the thermostat comprises two thermostatic devices, one set at a lower set temperature point of about 68. degree. F. maximum with an adjustment mechanism permitting adjustability to a lower set point temperature, e. g.

4379287, Apr 5, 1983

Jan 23, 1980

6/114596

Hugh J. Tyler - Santa Ana CA
William H. Conway - Midlothian VA

Robertshaw Controls Company - Richmond VA

G06F 302
H01G 1005
H01G 101
H01G 1013

340365C

A user, touch actuable switch panel of the capacitive type that includes one or more touch actuable capacitive switches, each switch including at least two capacitive plate elements formed on a dielectric panel. Conductive paths formed on the dielectric panel interconnect the capacitive plate elements to a source for applying signals to the capacitive plate elements forming said capacitive switches and sensing a resulting change in signal level when a selected switch is actuated by the user. Trim tabs formed on the dielectric panel are provided to balance the effect of stray capacitance between the conductive paths and the capacitive plate elements to maintain the level of change of signal at a determined value upon the actuation of each of said one or more capacitive switches.

4297557, Oct 27, 1981

May 3, 1976

5/682198

Hugh J. Tyler - Santa Ana CA
William H. Conway - Hacienda Heights CA

Robertshaw Controls Company - Richmond VA

H05B 668

219 1055R

There is disclosed a telemetric temperature probe for telemetry of temperatures of comestibles which are heated within microwave ovens. The probe includes a temperature responsive circuit for generating a signal responsive to the temperature of the comestible and an electromagnetic wave broadcasting circuit for telemetric transmission of the signal to a remote receiver which can conveniently be incorporated in the microwave oven and coupled to its control circuit. The probe is provided with facilities to derive power necessary for its operation from the microwave energy generated by the oven and includes, for this purpose, an antenna to receive microwave energy, a rectifier circuit for developing direct current power therefrom and a voltage regulation circuit to produce a source of direct current of controlled voltage for operation of the temperature responsive circuit and the broadcasting circuit.

3965396, Jun 22, 1976

Mar 13, 1974

5/450711

Hugh J. Tyler - Santa Ana CA
Dennis E. Newell - El Segundo CA

Robertshaw Controls Company - Richmond VA

H02H 708

317 42

A contactor or switch to an electrically powered unit, such as a motor, is controlled by a condition responsive circuit which may include facilities for changing the response condition of the circuit and/or facilities responsive to several conditions, such as temperature and excessive current.