Demand responsive central vacuum system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 20, 1999
Grant Date -
N/A
app pub date -
Jun 13, 1997
filing date -
Jun 13, 1997
priority date (Note) -
Expired
status (Latency Note)
![]() |
A preliminary load of PAIR data current through [] has been loaded. Any more recent PAIR data will be loaded within twenty-four hours. |
PAIR data current through []
A preliminary load of cached data will be loaded soon.
Any more recent PAIR data will be loaded within twenty-four hours.
![]() |
Next PAIR Update Scheduled on [ ] |

Importance

US Family Size
|
Non-US Coverage
|
Patent Longevity
|
Forward Citations
|
Abstract
A demand responsive central vacuum system having a vacuum producer driven by a variable speed motor and connected to a piping system having inlet ports located in areas to be cleaned. Wet and dry separators are connected in tandem in the piping system between the inlet ports and the vacuum producer. A flow switch detects when a flow condition is present in the piping system indicating that the vacuum system is in use and provides a signal to a controller which increases the operational speed of the drive motor and opens a bleed valve connected to the piping system to bleed air into the piping system.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
CITIZENS BANK OF CONNECTICUT | 90 STATE HOUSE SQUARE 10TH FLOOR HARTFORD CT 06103 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Burns, Jr James E | Stafford Springs, CT | 3 | 24 |
# of filed Patents : 3 Total Citations : 24 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 18 Citation Count
- A47L Class
- 44.44 % this patent is cited more than
- 26 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Mar 13, 2023 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PERKINELMER HEALTH SCIENCES INC.;REEL/FRAME:063170/0026 Owner name: PERKINELMER U.S. LLC, CONNECTICUT Effective Date: Mar 13, 2023 |
Mar 13, 2023 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:PERKINELMER U.S. LLC;REEL/FRAME:066839/0109 Owner name: OWL ROCK CAPITAL CORPORATION, NEW YORK Effective Date: Mar 13, 2023 |
May 05, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Nov 21, 2017 | I | Issuance | |
Nov 01, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Sep 01, 2011 | P | Published | |
May 09, 2011 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MANNINO, ROSARIO;GOODMAN, WILLIAM;REEL/FRAME:026284/0597 Owner name: PERKINELMER HEALTH SCIENCES, INC., MASSACHUSETTS Effective Date: May 09, 2011 |
Feb 25, 2011 | F | Filing | |
Feb 26, 2010 | PD | Priority Date |

Matter Detail

Renewals Detail
