Patent US5941372A successfully refreshed from Google Patents.
US5941372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push button switching system and method
Assignee: Dresser LLC
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Filing: 1998-11-12
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Granted: 1999-08-24
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Expires: 2018-11-12
Abstract
Abstract A push button switch assembly and method according to which a button is mounted to a partition and has at least one hook for engaging a ledge of the partition. At least one post extends from the button and through an opening in the partition and is fastened to the partition for mounting the button to the partition for pivotal movement which is limited by the engagement of the hook with the ledge. A membrane switch is mounted on the partition, and a bumper extends from the button for engaging the membrane of the switch to activate same. The bumper is fabricated from a silicone rubber to minimize the effects of relatively large pushing forces acting on the button and to enable the assembly to be used in relatively low temperature environments.
Inventors
- 👤 Mervyn Bradshaw Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:54
CPC Classifications
H; H01; H01H; H01H21/00; H01H21/02; H01H21/18; H01H21/22; H01H21/24; H01H13/00; H01H13/02; H01H13/023; H01H13/12; H01H13/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
A push button switch assembly comprising a partition defining at least one ledge, and at least one through opening, a button having at least one hook for engaging the ledge and at least one post extending through the opening, a fastener connected to the post to secure the button to the partition while permitting slight pivotal movement of the button relative to the partition which is limited by the engagement of the hook with the ledge, a membrane switch mounted on the partition, and a bumper extending from the button for engaging the membrane of the switch to activate same.
Claim 2
Dependent Claim
100 words
A push button switch assembly comprising a partition defining at least one ledge, and at least one through opening, a button having at least one hook for engaging the ledge and at least one post extending through the opening, a fastener connected to the post to secure the button to the partition while permitting slight pivotal movement of the button relative to the partition which is limited by the engagement of the hook with the ledge, a membrane switch mounted on the partition, and a bumper extending from the button for engaging the membrane of the switch to activate same.
Claim 3
Dependent Claim
37 words
The assembly of claim 1 wherein the post and the through opening are located at one end portion of the button and the partition, respectively, and wherein the button pivots relative to the partition about the post.
Claim 4
Dependent Claim
44 words
The assembly of claim 2 where the hook and the ledge are located at the other end portion of the button and the partition, respectively, so that the other end portion of the button moves relative to the other end portion of the partition.
Claim 5
Dependent Claim
37 words
The assembly of claim 3 further comprising at least one spring extending between the button and the partition to normally urge the other end portion of the button away from the other end portion of the partition.
Claim 6
Dependent Claim
55 words
The assembly of claim 3 wherein the bumper is located on the other end portion of the button and a through opening is formed through the other end portion of the partition through which the bumper extends when the other end portion of the button is pushed towards the other end portion of the partition.
Claim 7
Dependent Claim
49 words
The assembly of claim 5 wherein the back face of the button engages the front face of the partition and wherein the switch is mounted on the back face of the partition and is engaged by the bumper after it passes through the latter through opening in the partition.
Claim 8
Dependent Claim
24 words
The assembly of claim 6 further comprising a holder for receiving the switch and a slot formed in the partition for receiving the holder.
Claim 9
Dependent Claim
23 words
The assembly of claim 6 further comprising an LED mounted on the partition for lighting when the switch is activated by the button.
Claim 10
Dependent Claim
25 words
The assembly of claim 7 further comprising a holder for receiving the LED and a slot formed in the partition for receiving the latter holder.
Claim 11
Dependent Claim
19 words
The assembly of claim 1 wherein the bumper is fabricated of a relatively soft material that engages the switch.
Claim 12
Dependent Claim
12 words
The assembly of claim 10 wherein the material is a silicone rubber.
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US4350857A
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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) | 2002-08-23 | 2003-02-22 | 2003-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-23 | 2007-02-22 | 2007-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-23 | 2011-02-22 | 2011-08-24 | $7700.00 | Window Closed / Lapsed |