US3556348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid mixing and dispensing apparatus
Assignee: Individual
•
Filing: 1968-05-20
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Granted: 1971-01-19
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Expires: 1988-05-20
Abstract
Abstract Two or more fluids, such as the bonding and setting adhesive agents, are mixed and dispensed by an assembly comprising a rotatable shaft that has an axial mixing chamber, radial ports extending into the chamber, and a longitudinal fluid mixture dispensing port extending forwardly from the chamber. The forward end section of the shaft is encased by a nonrotatable housing provided with fluid inlet ports adapted to be swept by the inlet ports of the shaft to meter fluid into the mixing chamber. The entire assembly is adapted for mounting to a hand-held rotary electric power tool.
Inventors
- 👤 Robert J Bristow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:55
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/01; B05C17/0103; B05C17/00553; B29; B29B; B29B7/00; B29B7/74; B29B7/7438; B29B7/76; B29B7/761
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
152 words
A fluid mixing and dispensing apparatus comprising a hollow rotatable shaft means ported to provide an internal mixing chamber, at least one fluid inlet port transversely extending through the wall of said shaft means to provide fluid communication with said mixing chamber, and fluid outlet means extending longitudinally of said shaft for egress of the mixed fluid from the mixing chamber, housing means enclosing and extending forwardly of the shaft means having transverse ports adapted to be aligned with the ports of the shaft, and sleeve means for prohibiting communication between the ports of the shaft and the ports of the housing means when the apparatus is not dispensing whereby when the apparatus is in operation fluid entering through the ports in the housing means are swept by the shaft inlet ports, mixed and dispensed through the fluid outlet means and the supply is terminated when the apparatus is not in dispensing.
Claim 2
Dependent Claim
152 words
A fluid mixing and dispensing apparatus comprising a hollow rotatable shaft means ported to provide an internal mixing chamber, at least one fluid inlet port transversely extending through the wall of said shaft means to provide fluid communication with said mixing chamber, and fluid outlet means extending longitudinally of said shaft for egress of the mixed fluid from the mixing chamber, housing means enclosing and extending forwardly of the shaft means having transverse ports adapted to be aligned with the ports of the shaft, and sleeve means for prohibiting communication between the ports of the shaft and the ports of the housing means when the apparatus is not dispensing whereby when the apparatus is in operation fluid entering through the ports in the housing means are swept by the shaft inlet ports, mixed and dispensed through the fluid outlet means and the supply is terminated when the apparatus is not in dispensing.
Claim 3
Dependent Claim
49 words
An apparatus as set forth in claim 1 wherein the sleeve means is a low friction bushing member adapted to turn through only a limited arc disposed between the shaft member and the housing means, said bushing member having transverse ports alignable with the ports of the housing means.
Claim 4
Dependent Claim
27 words
Apparatus according to claim 1 including indexing means permitting indexing of the bushing member transfer ports into and out of alignment with the outer jacket transverse ports.
Claim 5
Dependent Claim
65 words
An apparatus according to claim 3 including a separate port for flushing the mixing chamber whereby the bushing member may be indexed out of alignment with the inlet ports and be in alignment with the flushing ports enabling the operator to halt the flow of fluid to be mixed and flush the mixing chamber without removing the material to be mixed or disassembling the apparatus.
Claim 6
Dependent Claim
44 words
Apparatus according to claim 1 including power means for rotating said shaft means, reservoir means for storing segregated volumes of fluids to be mixed, means providing fluid passages to said housing means inlet ports, and means for forcing stored fluids through said fluid passages.
Claim 7
Dependent Claim
33 words
Apparatus according to claim 5 including mounting means adapted to permit insertion of said shaft means into a tool chuck of a rotary power tool and adapted to nonrotatably support said housing means.
Claim 8
Dependent Claim
32 words
Apparatus according to claim 6 wherein said reservoir means are carried by said mounting means, and wherein said means for forcing stored fluids through said fluid passages includes spring actuated plunger means.
Claim 9
Dependent Claim
79 words
Apparatus according to claim 6 wherein said reservoir means are carried by said mounting means and comprise a cylinder for each fluid to be mixed and a plunger acting in each cylinder, a link cross connecting the plungers, and adjusTable spring loading means adapted to bear against said link such that said plungers extend into their respective cylinders in unison such that the relative rates of fluid supply therefrom are proportional to the relative cross-sectional areas of said cylinders.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |