US3744748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument case for mounting on a panel
Assignee: ZF International UK Ltd
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Filing: 1970-12-14
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Granted: 1973-07-10
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Expires: 1990-12-14
Abstract
Abstract An instrument casing has a flanged body with a flange at one end. The side wall of the body has recesses which define inclined ramp surfaces. A flexible clamping ring with inward projections having inclined end surfaces is engaged with the body to clamp it to a panel and these end surfaces and the interengaged ramp surfaces are undercut to prevent outward flexing of the ring.
Inventors
- 👤 M Harrold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
G; G01; G01D; G01D11/00; G01D11/30; G01D11/305
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
An instrument case for mounting in an aperture in a panel, comprising a cylindrical body having an external flange, which engages one side of the panel and whose outer dimension is greater than that of said aperture, and a plurality of ramp surfaces spaced around the body, said ramp surfaces being inclined to said flange and spaced therefrom, and a clamping ring engageable with said panel and having inwardly projecting parts, said parts having inclined surfaces engageable with said ramp surfaces respectively, for clamping the body in said aperture as said inclined surfaces are advanced along said ramp surfaces, said ring being formed of a flexible resilient material and said inwardly projecting parts are formed on portions of the ring which have smaller axial dimensions than the remainder of the ring.
Claim 2
Dependent Claim
131 words
An instrument case for mounting in an aperture in a panel, comprising a cylindrical body having an external flange, which engages one side of the panel and whose outer dimension is greater than that of said aperture, and a plurality of ramp surfaces spaced around the body, said ramp surfaces being inclined to said flange and spaced therefrom, and a clamping ring engageable with said panel and having inwardly projecting parts, said parts having inclined surfaces engageable with said ramp surfaces respectively, for clamping the body in said aperture as said inclined surfaces are advanced along said ramp surfaces, said ring being formed of a flexible resilient material and said inwardly projecting parts are formed on portions of the ring which have smaller axial dimensions than the remainder of the ring.
Claim 3
Dependent Claim
71 words
An instrument case as claimed in claim 1 in which said ramp surfaces are defined by a plurality of recesses in the wall of the body, each recess including a groove portion extending axially of the body and opening onto the end of said wall remote from said flange, whereby the ring can be slid onto the body with the inward projections on the ring passing along said groove portions respectively.
Claim 4
Dependent Claim
56 words
An instrument case as claimed in claim 1 in which each inwardly projecting part has an inclined surface at each of its axial ends, one of said inclined surfaces being closer to the adjacent one of the axial ends of the ring than the other inclined surface is to the other axial end of the ring.
Claim 5
Dependent Claim
33 words
An instrument case as claimed in claim 1 in which said inclined surfaces and said ramp surfaces are undercut so that their interengagement prevents outward flexing of the narrow portions of the ring.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |