US4345667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for injecting viscous materials
Assignee: Individual
•
Filing: 1980-01-24
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Granted: 1982-08-24
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Expires: 2000-01-24
Abstract
Abstract A method and apparatus are disclosed for greasing an article such as a wheel bearing in a common vice including a housing defining an internal grease chamber including a first open end; a dished piston slideably insertable into said chamber, including a threaded aperture; a stem threadably mounted in the piston aperture; and a tapered spool compression application member disposed over the stem for forcing the piston against the grease to cause grease to pass through the piston and into the bearing.
Inventors
- 👤 William E. Shultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:26
CPC Classifications
F; F16; F16N; F16N3/00; F16N3/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
An assembly for greasing an article comprising: a housing defining an internal chamber including a first open end; a piston slideably insertable into said chamber; a lubricant receiving aperture in said piston adapted to direct grease from below said piston upwardly into said article when said piston is compressed against said grease; a stem centrally extending from said piston; a compression application member adapted to be mounted on said stem; and an extension member adapted to engage said compression application member for increasing a longitudinal dimension of said compression application member.
Claim 2
Dependent Claim
91 words
An assembly for greasing an article comprising: a housing defining an internal chamber including a first open end; a piston slideably insertable into said chamber; a lubricant receiving aperture in said piston adapted to direct grease from below said piston upwardly into said article when said piston is compressed against said grease; a stem centrally extending from said piston; a compression application member adapted to be mounted on said stem; and an extension member adapted to engage said compression application member for increasing a longitudinal dimension of said compression application member.
Claim 3
Dependent Claim
25 words
An assembly as defined in claim 1 wherein said compression application member includes an elongated central aperture adapted to receive a portion of said stem.
Claim 4
Dependent Claim
24 words
An assembly as defined in claim 1 further including a handle attached to said stem for removal of said piston from said internal chamber.
Claim 5
Dependent Claim
26 words
An assembly as defined in claim 1 wherein said compression application member comprises a frusto conical surface for engaging a peripheral surface of a wheel bearing.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |