Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
229 words
A multiple speed capacitor-start induction motor comprising: a stator core, a rotor rotatable within said core, a pair of terminals connectible to a source of excitation voltage, a high speed main winding wound on said core and connected across said terminals, a low speed main winding wound on said core and connected across said terminals, a start winding wound on said core and connected across said terminals, a start capacitor connected in series with said start winding, a single pole single throw centrifugally actuated switch means responsive to the rotational speed of said motor and having a pair of switch contacts which open when said rotor exceeds a predetermined speed, relay means comprising a coil in series with said switch contacts and having contacts in series with said start capacitor, double throw selector switch means having a high speed position and an alternative low speed position for connecting said centrifugally actuated switch means contacts in series with said low speed main winding and one of said terminals when in the high speed position and for connecting said centrifugally actuated switch means contacts in series with said high speed main winding and one of said terminals when in the low speed position, said relay means operating to open said relay contacts when current through said relay coil is interrupted by the opening of the series connected speed actuated switch contacts.
Claim 2
Dependent Claim
229 words
A multiple speed capacitor-start induction motor comprising: a stator core, a rotor rotatable within said core, a pair of terminals connectible to a source of excitation voltage, a high speed main winding wound on said core and connected across said terminals, a low speed main winding wound on said core and connected across said terminals, a start winding wound on said core and connected across said terminals, a start capacitor connected in series with said start winding, a single pole single throw centrifugally actuated switch means responsive to the rotational speed of said motor and having a pair of switch contacts which open when said rotor exceeds a predetermined speed, relay means comprising a coil in series with said switch contacts and having contacts in series with said start capacitor, double throw selector switch means having a high speed position and an alternative low speed position for connecting said centrifugally actuated switch means contacts in series with said low speed main winding and one of said terminals when in the high speed position and for connecting said centrifugally actuated switch means contacts in series with said high speed main winding and one of said terminals when in the low speed position, said relay means operating to open said relay contacts when current through said relay coil is interrupted by the opening of the series connected speed actuated switch contacts.
Claim 3
Dependent Claim
67 words
The motor of claim 1 wherein when said centrifugally actuated switch means contacts are closed during the start condition of the motor, both said main windings are connected across said terminals, and said centrifugally actuated switch means electrically disconnects said low speed main winding from one of said terminals when the predetermined rotor speed is exceeded if said selector switch means is in the high speed position.
Claim 4
Dependent Claim
67 words
The motor of claim 1 wherein when said centrifugally actuated switch means contacts are closed during the start condition of the motor, both said main windings are connected across said terminals, and said centrifugally actuated switch means electrically disconnects said high speed main winding from one of said terminals when the predetermined rotor speed is exceeded if said selector switch means is in the low speed position.
Claim 5
Dependent Claim
39 words
The motor of claim 1 wherein said centrifugally actuated switch means is mechanically connected to said rotor and is responsive directly to the rotational speed of said rotor to open its contacts when the predetermined rotor speed is exceeded.
Claim 6
Dependent Claim
17 words
The motor of claim 1 wherein said selector switch means comprises a single pole double throw switch.
Claim 7
Dependent Claim
21 words
The motor of claim 1 including a run capacitor connected in series with said start winding and one of said terminals.
Claim 8
Dependent Claim
24 words
The motor of claim 1 including a run capacitor connected in parallel with the series connection of said start capacitor and said relay contacts.
Claim 9
Dependent Claim
17 words
The motor of claim 7 wherein said run capacitor is connected in series with said start winding.
Claim 10
Dependent Claim
48 words
The motor of claim 1 including a first overload line break device connected in series with one of said main windings and one of said terminals, and a second overload line break device connected in series with one of said terminals and the other of said main windings.
Claim 11
Dependent Claim
21 words
The motor of claim 1 wherein said low speed winding is of a larger pole configuration than said high speed winding.
Claim 12
Dependent Claim
25 words
The motor of claim 10 wherein said low speed winding is a four pole winding and said high speed winding is a two pole winding.
Claim 13
Dependent Claim
20 words
The motor of claim 10 wherein said start winding has the same number of poles as said high speed winding.
Claim 14
Dependent Claim
13 words
The motor of claim 1 wherein said relay contacts are normally open contacts.