Screw spindle pump, fuel pump assembly, and fuel pump unit
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Apr 5, 2022
Grant Date -
Apr 30, 2020
app pub date -
Jun 18, 2018
filing date -
Jun 18, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A screw-spindle pump comprising: first and second screw spindles forming running and drive spindles, respectively, and a pump housing configured to receive the first and second screw spindles. The first and second screw spindles form, with at least the pump housing, delivery chambers, moving from a suction side to a pressure side of the pump as a consequence due to rotation of the screw spindles. The pump housing has an elongate insert, as an abutment for the first and second screw spindles and against which the first and second screw spindles are supported, the elongate insert having a first portion forming a first abutment for the second screw spindle and a second portion forming a second abutment for the first screw spindle. The elongate insert is clamped into a receptacle of the pump housing using a cross-sectional dimension of the elongate insert.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2018 Application Filing Year
- F04C Class
- 514 Applications Filed
- 337 Patents Issued To-Date
- 65.57 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F04C Class
- 85.77 % this patent is cited more than
- 3 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Oct 5, 2025 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 5, 2029 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 5, 2033 |