US3834075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tree trunk pressure feeding device
Assignee: TRE X INJECTOR SYST CO
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Filing: 1973-02-12
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Granted: 1974-09-10
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Expires: 1993-02-12
Abstract
Abstract A device for pressure feeding of liquid chemicals into tree trunks comprises a pipe length with a threaded and tapered end for insertion into the tree trunk. Long peripheral slits are provided in the threaded and tapered end as the primary exit for liquid passing through the pipe to carry beneficial chemicals into the tree trunk and to prevent reaction forces of pressure feeding from ejecting the device from the trunk.
Inventors
- 👤 A Nix
- 👤 E Maley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:25
CPC Classifications
A; A01; A01G; A01G7/00; A01G7/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
Apparatus for insertion into a wood body for transmitting fluid to said body comprising means forming an elongated tubular passage with supply and exit ends, said exit end having a threaded and tapered outer surface and having said passage running coaxially therethrough and being formed with a plurality of longitudinal slits spanning the complete radial distance from said surface to said passage, means defining an additional axially located end opening at said exit end, the aggregate exit area of said slits being greater than the area of said end opening.
Claim 2
Dependent Claim
90 words
Apparatus for insertion into a wood body for transmitting fluid to said body comprising means forming an elongated tubular passage with supply and exit ends, said exit end having a threaded and tapered outer surface and having said passage running coaxially therethrough and being formed with a plurality of longitudinal slits spanning the complete radial distance from said surface to said passage, means defining an additional axially located end opening at said exit end, the aggregate exit area of said slits being greater than the area of said end opening.
Claim 3
Dependent Claim
37 words
Apparatus in accordance with claim 1 wherein the passage forming means comprise a length of pipe, and the said slits comprise at least one thin diametral kerf through the pipe in the region adjacent said exit end.
Claim 4
Dependent Claim
15 words
Apparatus in accordance with claim 2 wHerein said slits comprise multiple intersecting orthogonal diametral kerfs.
Claim 5
Dependent Claim
53 words
Apparatus in accordance with claim 2 and further comprising means at said supply end for receiving a quick connect coupling for fliud passage therein at the supply end of the pipe length, and means defining a stop between the supply and exit ends for limiting the penetration of said apparatus into said body.
Claim 6
Dependent Claim
24 words
Apparatus in accordance with claim 4 wherein said means defining a stop comprise an annular structure with peripheral facets thereon for receiving a wrench.
Claim 7
Dependent Claim
53 words
Apparatus in accordance with claim 1 and further comprising means at said supply end for receiving a quick connect coupling for fluid passage therein at the supply end of the pipe length, and means defining a stop between the supply and exit ends for limiting the penetration of said apparatus into a trunk.
Claim 8
Dependent Claim
24 words
Apparatus in accordance with claim 6 wherein said means defining a stop comprise an annular structure with peripheral facets thereon for receiving a wrench.
Claim 9
Dependent Claim
75 words
Apparatus in accordance with claim 1 and further comprising means defining a stop located in the supply end half of the length of the passage forming means between the supply and exit ends for limiting the penetration of said apparatus into a body, the said slits being wholly longitudinally within the exit end half of the length of the passage forming means but extending longitudinally more than halfway from said exit end to said stop.
Claim 10
Dependent Claim
54 words
Apparatus in accordance with claim 8 wherein the average longitudinal interval between successive threads of the threaded end is at least two times the average longitudinal thickness of the threads and the average pitch of said threads is less than the average diameter of said threaded end portion as measured at the thread roots.
Claim 11
Dependent Claim
54 words
Apparatus in accordance with claim 9 wherein said slits comprise multiple intersecting orthogonal diametral kerfs, said exit end includes an additional axially located end opening with an area less than aggregate exit area of said slits, and said means defining a stop comprise an annular structure with peripheral facets thereon for receiving a wrench.
Claim 12
Dependent Claim
69 words
Apparatus in accordance with claim 1 and further comprising a plurality of units of said apparatus, common fluid supply means therefor means forming multiple fluid passages extending from said common fluid supply means to each of said apparatus units and being demountably coupled to the inlet means thereof to feed said units in fluid parallel, and permitting said apparatus units to be inserted into a body at spaced locations.
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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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |