US4725177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retainer for preassembly of mechanical components
Assignee: Illinois Tool Works Inc
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Filing: 1986-12-12
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Granted: 1988-02-16
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Expires: 2006-12-12
Abstract
Abstract A retainer is provided for holding at least two valve rocker trunnions in predetermined, fixed relationship prior to and during installation in a diesel engine assembly. The retainer is an elongated strip arcuate in cross-section and provided with shoulders. At least two cut-out sections provided with pairs of opposing spring members are adapted to receive the trunnions in an interference fit and hold them in fixed relationship while the retainer and trunnions are installed in the engine. Means are provided for holding the retainer in position on the engine assembly during installation.
Inventors
- 👤 Philip D. Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:35
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/20; B; B25; B25B; B25B27/00; B25B27/14; B25B27/24; B25B9/00; F01; F01L; F01L1/00; F01L1/46; F16B2/00; F16B2/20; F16B2/22; F16B2/24; F16B2/241; F16B2/245; F02; F02B; F02B3/00; F02B3/06; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53552; Y10T29/53596
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
A retainer for holding at least two valve rocker assembly trunnions in predetermined, fixed relationship preparatory to and during installation of said trunnions in a diesel engine assembly, said retainer comprising in combination: an elongated strip provided with shoulders along each of the longer sides thereof and having a concave arcuate shaped lateral cross-section; said strip having at least two cut-out sections disposed in predetermined relationship to each other; said cut-out sections being each provided with a pair of opposing spring members adapted to receive and hold said trunnions therebetween in predetermined, fixed relationship; and means located on said strip for interlockingly engaging said diesel engine assembly and holding said retainer in the correct configuration for installation of said trunnions in said assembly.
Claim 2
Dependent Claim
123 words
A retainer for holding at least two valve rocker assembly trunnions in predetermined, fixed relationship preparatory to and during installation of said trunnions in a diesel engine assembly, said retainer comprising in combination: an elongated strip provided with shoulders along each of the longer sides thereof and having a concave arcuate shaped lateral cross-section; said strip having at least two cut-out sections disposed in predetermined relationship to each other; said cut-out sections being each provided with a pair of opposing spring members adapted to receive and hold said trunnions therebetween in predetermined, fixed relationship; and means located on said strip for interlockingly engaging said diesel engine assembly and holding said retainer in the correct configuration for installation of said trunnions in said assembly.
Claim 3
Dependent Claim
16 words
A retainer in accordance with claim 1 integrally formed from spring steel and subsequently heat treated.
Claim 4
Dependent Claim
28 words
A retainer in accordance with claim 1 wherein said spring members each form two opposing sides of a rectangle shaped to receive said trunnions in an interference fit.
Claim 5
Dependent Claim
47 words
A retainer in accordance with claim 1 wherein the cross-sectional width of the retainer is approximately twice the cross-sectional width of the components to be inserted in the cut-out sections thereof and the depth of said shoulders is approximately 0.4 times the cross-sectional width of said components.
Claim 6
Dependent Claim
48 words
A retainer in accordance with claim 3 wherein said spring members, after insertion of said trunnions in interference fit, lie in a plane describing an angle of approximately 25 degrees with respect to the plane in which the lower edges of the shoulders of said retainer are disposed.
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) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |