US4003409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for oil spray pumps
Assignee: CRAMER HALSTRUP AND SCHRUNDER
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Filing: 1976-02-05
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Granted: 1977-01-18
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Expires: 1996-02-05
Abstract
Abstract An oil spraying pump having a piston which is stationary with respect to a movable cylinder having a discharge opening therein. A normally sealed bore-hole extends through the piston from the cylinder interior to atmosphere. Means are provided to supply oil to the cylinder interior whereby when the bore-hole is sealed, relative movement between the cylinder and the piston causes oil to be sprayed from the discharge opening. The pump further includes a follower joined to the bore-hole seal. The follower is periodically displaced to move the seal out of sealing relationship with the bore-hole thereby venting the cylinder interior to atmosphere and preventing oil from being sprayed from the discharge opening.
Inventors
- 👤 Gunter Steffens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:53
CPC Classifications
F; F16; F16N; F16N13/00; F16N13/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
165 words
An oil spraying pump adapted for use with a weaving machine, comprising: a fixed piston provided with an axially oriented bore-hole which communicates with atmosphere; a movable cylinder within which said piston is located, said bore-hole opening into the interior of said cylinder; means for normally sealing said bore-hole; a follower element located within said bore-hole and having a portion projecting from an end of the piston remote from the cylinder; means engaging the projecting portion of said follower to periodically displace the follower thereby moving the sealing means from its sealing relationship with the bore-hole whereby the interior of the cylinder is vented to atmosphere; means for supplying oil to the interior of the cylinder; a discharge opening from the cylinder interior; and means for moving said cylinder axially with respect to the piston whereby when said bore-hole is sealed and said cylinder moves towards the piston, air within the cylinder interior is compressed to force oil in a mist from said discharge opening.
Claim 2
Dependent Claim
165 words
An oil spraying pump adapted for use with a weaving machine, comprising: a fixed piston provided with an axially oriented bore-hole which communicates with atmosphere; a movable cylinder within which said piston is located, said bore-hole opening into the interior of said cylinder; means for normally sealing said bore-hole; a follower element located within said bore-hole and having a portion projecting from an end of the piston remote from the cylinder; means engaging the projecting portion of said follower to periodically displace the follower thereby moving the sealing means from its sealing relationship with the bore-hole whereby the interior of the cylinder is vented to atmosphere; means for supplying oil to the interior of the cylinder; a discharge opening from the cylinder interior; and means for moving said cylinder axially with respect to the piston whereby when said bore-hole is sealed and said cylinder moves towards the piston, air within the cylinder interior is compressed to force oil in a mist from said discharge opening.
Claim 3
Dependent Claim
34 words
An oil-spraying pump as set forth in claim 1, wherein said means for periodically displacing the follower comprises a spring-loaded lever engaging the projecting portion of the follower and a cam contacting the lever.
Claim 4
Dependent Claim
22 words
An oil spraying pump as set forth in claim 2, wherein said cam is located on the periphery of a rotating member.
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) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |