Capacitor for multiple replacement applications

• US 9,343,238 B2
• Filed: 08/31/2012
• Issued: 05/17/2016
• Est. Priority Date: 04/07/2005
• Status: Active Grant

• Current Assignee: AmRad Manufacturing, LLC
• Original Assignee: American Radionic Company Incorporated
• Inventors: Stockman, Robert M.
• Primary Examiner(s): Ha, Nguyen T
• Application Number:
  US13/601,205
• Publication Number:
  US 20130003252A1
• Time in Patent Office: 1,355 Days
• Field of Search: 361/301.5, 361303-305, 361502-503, 361/301.1, 361509-512, 361523-525
• US Class Current: 1/1
• CPC Class Codes: H01G 2/14 Protection against electric or thermal overload by cooling H01G2/08
• CPC Class Codes: H01G 2/24 Distinguishing marks, e.g. colour coding
• CPC Class Codes: H01G 4/224 Housing; Encapsulation
• CPC Class Codes: H01G 4/228 Terminals
• CPC Class Codes: H01G 4/232 electrically connecting two or more layers of a stacked or rolled capacitor
• CPC Class Codes: H01G 4/236 leading through the housing, i.e. lead-through
• CPC Class Codes: H01G 4/32 Wound capacitors
• CPC Class Codes: H01G 4/38 Multiple capacitors, i.e. structural combinations of fixed capacitors
• CPC Class Codes: H01G 4/385 Single unit multiple capacitors, e.g. dual capacitor in one coil

Abstract

A capacitor provides a plurality of selectable capacitance values, by selective connection of six concentrically wound capacitor sections of a capacitive element each having a capacitance value. The capacitor sections each have a respective section element terminal at a first end of the capacitive element and the capacitor sections have a common element terminal at a second end of the capacitive element. A pressure interrupter cover assembly is sealingly secured to the open end a case for the element and has a deformable cover with a centrally mounted common cover terminal and a plurality of section cover terminals mounted at spaced apart locations. A conductor frangibly connects the common element terminal of the capacitive element to the common cover terminal and conductors respectively frangibly connect the capacitor section terminals to the section cover terminals.

Claims

1. An apparatus suitable for use in an air-conditioning system and configured to provide a plurality of selectable capacitance values, comprising:

a plurality of capacitive devices housed in a case, each of the capacitive devices having a first capacitor terminal and a second capacitor terminal, three of the capacitive devices having a combined capacitance value of about 55.0 microfarads;

a pressure interrupter cover assembly comprising;

a deformable cover mountable to the case,

a set of capacitor cover terminals, each terminal having at least one contact extending from the deformable cover, wherein the deformable cover is configured to displace at least one of the capacitor cover terminals based upon an operative failure of at least one of the capacitive devices,

a common cover terminal having at least one contact extending from the deformable cover, and

a set of insulation structures, wherein each is configured to provide insulation for at least one of the capacitor cover terminals;

a first conductor configured to electrically connect the first capacitor terminal of at least one of the capacitive devices to one of the capacitor cover terminals; and

a second conductor configured to electrically connect the second capacitor terminal of the at least one of the capacitive devices to the common cover terminal.

2. The apparatus of claim 1, wherein the plurality of capacitive devices correspond to six capacitor sections of a single wound capacitive element.

3. The apparatus of claim 1, wherein the apparatus is configured for dual application such that at least one of the capacitive devices is operable for use with a compressor motor of the air-conditioning system and another capacitive device is operable for use with a fan motor of the air-conditioning system.

4. The apparatus of claim 1, wherein the apparatus comprises six capacitive devices.

5. The apparatus of claim 4, wherein each of the insulation structures is cup shaped.

6. The apparatus of claim 4, wherein four capacitive devices have a combined capacitance value greater than about 60.0 microfarads and two of the capacitive devices have a combined capacitance value greater than about 6.0 microfarads.