Hard start kit for multiple replacement applications

• US 10,163,571 B2
• Filed: 03/18/2016
• Issued: 12/25/2018
• Est. Priority Date: 11/13/2009
• Status: Active Grant

• Current Assignee: AmRad Manufacturing, LLC
• Original Assignee: American Radionic Company Incorporated
• Inventors: Stockman, Richard W.
• Primary Examiner(s): Ha, Nguyen
• Application Number:
  US15/074,464
• Publication Number:
  US 20160203916A1
• Time in Patent Office: 1,012 Days
• 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 5/38 Multiple capacitors, e.g. ganged
• CPC Class Codes: H02P 1/44 by phase-splitting with a capacitor
• CPC Class Codes: H02P 1/445 by using additional capacitors switched at start up

Abstract

A hard start capacitor replacement unit has a plurality of capacitors in a container sized to fit in existing hard start capacitor space. The capacitors are metallized film capacitors wound in a single cylindrical capacitive element. The container has a common terminal and capacitors value terminals for the plurality of capacitors, which may be connected singly or in combination to provide a selected capacitance. An electronic or other relay connects the selected capacitance in parallel with a motor run capacitor. The hard start capacitor replacement unit is thereby adapted to replace a wide variety of hard start capacitors.

Claims

1. An apparatus comprising:

a container capable of receiving a plurality of capacitive devices, one or more of the capacitive devices having a first capacitor terminal and a second capacitor terminal;

a cover mountable to the container, the cover comprising;

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

one or more capacitor cover terminals, each of the one or more capacitor cover terminals having at least one contact extending from the cover,

a first conductor electrically connectable to the first capacitor terminal and one of the one or more capacitor cover terminals,

a second conductor electrically connectable to the second capacitor terminal and the common cover terminal, and

an insulation structure associated with one of the one or more capacitor cover terminals; and

a relay that controls opening and closing of contacts, wherein selected ones of the plurality of capacitive devices are connected when the contacts are closed and the selected ones of the plurality of capacitive devices are disconnected when the contacts are open.

2. The apparatus of claim 1, wherein the insulation structure is cup shaped.

3. The apparatus of claim 1, wherein one or more of the capacitive devices provides at least one metalized film capacitor.

4. The apparatus of claim 3, wherein the at least one metalized film is polypropylene metalized with zinc.

5. The apparatus of claim 3, wherein the at least one metalized film is about 4 microns or less in thickness.

6. The apparatus of claim 1, wherein one or more of the plurality of capacitive devices has a capacitance value between about 48 and 112 microfarads.

7. The apparatus of claim 1, wherein the relay is an electronic relay.

8. The apparatus of claim 7, wherein the electronic relay is sized to fit above the container.

9. The apparatus of claim 1, wherein the relay is a control relay or a potential relay.

10. The apparatus of claim 1, wherein the plurality of capacitive devices have a combined capacitance value of about 296 microfarads.