Patent US3908799A successfully refreshed from Google Patents.
US3908799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for dispensing a fluid in a conduit interior
Assignee: Individual
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Filing: 1974-07-05
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Granted: 1975-09-30
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Expires: 1994-07-05
Abstract
Abstract An apparatus and method for uniformly dispensing a fluid, such as a lubricant, in the interior of a conduit for easing the installation of wires or other conductors within the conduit employ a series of tubing sections filled with the fluid and a corresponding series of interconnected elongated rods. The tubing sections are attached by clamping loops to the interconnected rods so that a portion of the tube wall in each section is clamped closed. One end of the section includes a slit or other opening through which the fluid within the tubing section can be dispensed. The sections of tubing are inserted into a conduit by means of the interconnected rods, and the fluid is dispensed from the tubing sections into the conduit interior by pulling the tubing sections relative to the clamping loops in the rods and thereby progressively and continuously moving the clamped tube wall portion along each section toward the opening at the one end of the section to expel the fluid.
Inventors
- 👤 Anthony J Valeriano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:03
CPC Classifications
F; F16; F16N; F16N3/00; Y; Y10; Y10S; Y10S118/00; Y10S118/10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20468
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
Apparatus for dispensing a fluid in a conduit interior comprising: an elongated rod having first and second ends and being sufficiently rigid to push the first end through a conduit in advance of the second end; a section of tubing having a flexible tube wall and having a hollow tube interior between a first end of the section and a second end for storage of a fluid, the tubing section also having an opening in the tube wall adjacent the first end for dispensing stored fluid; and clamping means located on the elongated rod between the first and second ends for attaching the tubing section to the rod and for squeezing the flexible tube wall together adjacent the second end of the tubing section, the clamping means permitting the tubing section to move through the clamping means thereby forcing stored fluid in the tube interior out of the opening adjacent the first end of the tubing section.
Claim 2
Dependent Claim
157 words
Apparatus for dispensing a fluid in a conduit interior comprising: an elongated rod having first and second ends and being sufficiently rigid to push the first end through a conduit in advance of the second end; a section of tubing having a flexible tube wall and having a hollow tube interior between a first end of the section and a second end for storage of a fluid, the tubing section also having an opening in the tube wall adjacent the first end for dispensing stored fluid; and clamping means located on the elongated rod between the first and second ends for attaching the tubing section to the rod and for squeezing the flexible tube wall together adjacent the second end of the tubing section, the clamping means permitting the tubing section to move through the clamping means thereby forcing stored fluid in the tube interior out of the opening adjacent the first end of the tubing section.
Claim 3
Dependent Claim
25 words
Apparatus for dispensing a fluid in a conduct interior as defined in claim 1 wherein: the clamping means is integrally connected with the elongated rod.
Claim 4
Dependent Claim
26 words
Apparatus for dispensing a fluid in a conduit interior as in claim 2 wherein the clamping means comprises a U-shaped loop formed in the elongated rod.
Claim 5
Dependent Claim
50 words
Apparatus for dispensing a fluid in a conduit interior as defined in claim 1 wherein: the elongated rod and the section of tubing are substantially coextensive in length between their respective first and second ends; and the clamping means is located on the rod adjacent one of the rod ends.
Claim 6
Dependent Claim
52 words
Apparatus for dispensing a fluid in a conduit as in claim 1 further including: a series of said sections of tubing interconnected with one another in end-to-end relationship; and a plurality of said clamping means operatively associated with the series of tubing sections for forcing stored fluid from each of the sections.
Claim 7
Dependent Claim
42 words
Apparatus for dispensing a fluid in a conduit interior as in claim 5 wherein the series of said sections is formed from a thermoplastic tubing and each section of tubing at the first end has a heat seal in the tube wall.
Claim 8
Dependent Claim
52 words
Apparatus for dispensing a fluid in a conduit interior as in claim 5 further including: a series of said elongated rods interconnected with one another, each rod corresponding with one of the sections of tUbing; and wherein the plurality of clamping means are located respectively on the series of interconnected elongated rods.
Claim 9
Dependent Claim
35 words
Apparatus for dispensing a fluid in a conduit interior as defined in claim 7 wherein each of the sections of tubing in the series contains a vent in the tube wall adjacent the second end.
Claim 10
Dependent Claim
46 words
Apparatus for dispensing a fluid in a conduit interior as defined in claim 7 wherein: each of the elongated rods of the series has an openable link at one end and an eyelet at the opposite end for connecting and disconnecting the rods in the series.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |