Patent US3889840A successfully refreshed from Google Patents.
US3889840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gage construction and spacing member therefor or the like
Assignee: Robertshaw Controls Co
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Filing: 1973-10-02
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Granted: 1975-06-17
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Expires: 1993-10-02
Abstract
Abstract An instrument casing having an opening therein exposing a pointer and a dial therefor. A sealing member is carried by the casing adjacent the opening thereof. A lens is disposed in the opening and is provided with an outer periphery that is disposed against the sealing member. A lens ring is disposed against the other side of the outer periphery of the lens to hold the lens in the casing opening. The lens ring has an interlocking part thereof disposed against the outer peripheral edge of the lens between the sides thereof to lock the lens ring to the casing and, thus, the lens in the casing opening. A separate annular spacing member is disposed in the casing opening against the end wall thereof to hold the sealing member in spaced relation from the dial plate, the spacing member carrying an annular spring adapted to be compressed between the sealing member and an end wall of the casing to maintain the sealing member in sealing engagement with the lens.
Inventors
- 👤 Larry V Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:09
CPC Classifications
G; G01; G01D; G01D11/00; G01D11/24; G01D11/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
196 words
In combination, an instrument casing having an end wall means and an opening therein leading to said end wall means, a sealing member carried by said casing adjacent said opening thereof, a lens disposed in said opening and having one side of its outer periphery disposed against said sealing member, a lens ring means disposed against the other side of the outer periphery of said lens to hold said lens in said opening, said lens ring means having an interlocking part thereof disposed against the outer peripheral edge means of said lens between said sides thereof to lock said lens ring means to said casing, and a spacing member in said opening between said sealing member and said end wall means, said spacing member carrying a compression spring means that engages said end wall means to normally hold said spacing member from said end wall means while permitting said spacing member to be moved toward said end wall means through the compressing of said compression spring means whereby said compression spring is adapted to be compressed and cause said spacing member to maintain said sealing member in sealing engagement with said one side of said lens.
Claim 2
Dependent Claim
196 words
In combination, an instrument casing having an end wall means and an opening therein leading to said end wall means, a sealing member carried by said casing adjacent said opening thereof, a lens disposed in said opening and having one side of its outer periphery disposed against said sealing member, a lens ring means disposed against the other side of the outer periphery of said lens to hold said lens in said opening, said lens ring means having an interlocking part thereof disposed against the outer peripheral edge means of said lens between said sides thereof to lock said lens ring means to said casing, and a spacing member in said opening between said sealing member and said end wall means, said spacing member carrying a compression spring means that engages said end wall means to normally hold said spacing member from said end wall means while permitting said spacing member to be moved toward said end wall means through the compressing of said compression spring means whereby said compression spring is adapted to be compressed and cause said spacing member to maintain said sealing member in sealing engagement with said one side of said lens.
Claim 3
Dependent Claim
215 words
In combination, an instrument casing having an end wall means and an opening therein leading to said end wall means, a sealing member carried by said casing adjacent said opening thereof, a lens disposed in said opening and having one side of its outer periphery disposed against said sealing member, a lens ring means disposed against the other side of the outer periphery of said lens to hold said lens in said opening, said lens ring means having an interlocking part thereof disposed against the outer peripheral edge means of said lens between said sides thereof to lock said lens ring means to said casing, and a spacing member in said opening between said sealing member and said end wall means, said spacing member having an annular groove means therein that faces said end wall means, and a wavy spring disposed in said annular groove means and being in engagement with said end wall means to normally hold said spacing member spaced from said end wall means while permitting said spacing member to be moved toward said end wall means through the compressing of said wavy spring whereby said spring is adapted to be compressed and cause said spacing member to maintain said sealing member in sealing engagement with said one side of said lens.
Claim 4
Dependent Claim
215 words
In combination, an instrument casing having an end wall means and an opening therein leading to said end wall means, a sealing member carried by said casing adjacent said opening thereof, a lens disposed in said opening and having one side of its outer periphery disposed against said sealing member, a lens ring means disposed against the other side of the outer periphery of said lens to hold said lens in said opening, said lens ring means having an interlocking part thereof disposed against the outer peripheral edge means of said lens between said sides thereof to lock said lens ring means to said casing, and a spacing member in said opening between said sealing member and said end wall means, said spacing member having an annular groove means therein that faces said end wall means, and a wavy spring disposed in said annular groove means and being in engagement with said end wall means to normally hold said spacing member spaced from said end wall means while permitting said spacing member to be moved toward said end wall means through the compressing of said wavy spring whereby said spring is adapted to be compressed and cause said spacing member to maintain said sealing member in sealing engagement with said one side of said lens.
Claim 5
Dependent Claim
94 words
A spacing member for being disposed in an opening of an instrument casing to space a lens from an end wall means of the casing, said spacing member carrying compression spring means that is adapted to engage said end wall means and normally space said spacing member from said end wall means while permitting said spacing member to be moved toward said end wall means through the compression of said compression spring means, said spacing member being substantially annular, said spacing member having a substantially annular groove means therein receiving said compression spring means.
Claim 6
Dependent Claim
94 words
A spacing member for being disposed in an opening of an instrument casing to space a lens from an end wall means of the casing, said spacing member carrying compression spring means that is adapted to engage said end wall means and normally space said spacing member from said end wall means while permitting said spacing member to be moved toward said end wall means through the compression of said compression spring means, said spacing member being substantially annular, said spacing member having a substantially annular groove means therein receiving said compression spring means.
Claim 7
Dependent Claim
20 words
A spacing member as set forth in claim 3 wherein said compression spring means comprises a substantially annular wavy spring.
Claim 8
Dependent Claim
43 words
A spacing member as set forth in claim 3 wherein said spacing member has a top surface that is angled to cooperate with said casing for defining a groove means to receive an annular sealing member between said spacing member and said lens.
Claim 9
Dependent Claim
115 words
A spacing member for being disposed in an opening of an instrument casing to space a lens from an end wall means of the casing, said spacing member carrying compression spring means that is adapted to engage said end wall means and normally space said spacing member from said end wall means while permitting said spacing member to be moved toward said end wall means through the compression of said compression spring means, said spacing member being substantially annular, one side of said spacing member that is adapted to face said end wall means of said casing having an annular recess that is adapted to receive an outer peripheral portion of a dial plate therein.
Claim 10
Dependent Claim
115 words
A spacing member for being disposed in an opening of an instrument casing to space a lens from an end wall means of the casing, said spacing member carrying compression spring means that is adapted to engage said end wall means and normally space said spacing member from said end wall means while permitting said spacing member to be moved toward said end wall means through the compression of said compression spring means, said spacing member being substantially annular, one side of said spacing member that is adapted to face said end wall means of said casing having an annular recess that is adapted to receive an outer peripheral portion of a dial plate therein.
Claim 11
Dependent Claim
35 words
A spacing member as set forth in claim 6 wherein said one side of said spacing member has an annular groove means therein outboard of said annular recess and receiving said compression spring means therein.
Claim 12
Dependent Claim
20 words
A spacing member as set forth in claim 7 wherein said compression spring means comprises a substantially annular wavy spring.
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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) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |