US4031849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push button switch position indicator
Assignee: MEHTA ENGR ENTERPRISE
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Filing: 1975-06-18
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Granted: 1977-06-28
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Expires: 1995-06-18
Abstract
Abstract A push button switch position indicator wherein a push button head with a window has a carrier mounted in the head to move longitudinally relative thereto, the carrier carrying a signal surface and at least one shutter which is responsive to the movements of the button head so that the signal surface is uncovered by the shutter when the button head is depressed, and covered thereby when the button head is not depressed.
Inventors
- 👤 Girishkumar Ratilal Mehta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:15
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
263 words
A push button switch indicator (2) having a longitudinal axis comprising: (a) a push button head (16) having a window fitted with a transparent cap (44) and a carrier (20) detachably mounted to switch frame means (4), said carrier being mounted in said head for longitudinal movement towards and away from said window while said head is maintained longitudinally by spring means (18) relative to said carrier and said frame means; (b) said carrier having a front end whereon a signal surface (56) is provided and a pair of limbs (40, 42) extending longitudinally towards the rear end of said carrier; (c) at least one shutter means (28, 30); (d) first attaching means (32, 34; 36, 38; 52, 54) provided on said carrier for mounting on the latter said shutter means at said front end of the carrier so that said shutter means is rotatable about bearing means forming an axis perpendicular to the longitudinal axis; (e) first operating cam means (46, 48) provided on said cap and co-acting with said first attaching means for operating the latter so that, on moving said head relative to said carrier, said shutter means pivotally moves into its "on" or first position for providing visual detection of said surface through said window; and (f) third operating cam means (58, 60) provided on said head and co-acting with said first attaching means for operating the latter so that, on moving said head relative to said carrier, said shutter means pivotally moves into its "off" or second position for preventing the detection of said surface through said window.
Claim 2
Dependent Claim
263 words
A push button switch indicator (2) having a longitudinal axis comprising: (a) a push button head (16) having a window fitted with a transparent cap (44) and a carrier (20) detachably mounted to switch frame means (4), said carrier being mounted in said head for longitudinal movement towards and away from said window while said head is maintained longitudinally by spring means (18) relative to said carrier and said frame means; (b) said carrier having a front end whereon a signal surface (56) is provided and a pair of limbs (40, 42) extending longitudinally towards the rear end of said carrier; (c) at least one shutter means (28, 30); (d) first attaching means (32, 34; 36, 38; 52, 54) provided on said carrier for mounting on the latter said shutter means at said front end of the carrier so that said shutter means is rotatable about bearing means forming an axis perpendicular to the longitudinal axis; (e) first operating cam means (46, 48) provided on said cap and co-acting with said first attaching means for operating the latter so that, on moving said head relative to said carrier, said shutter means pivotally moves into its "on" or first position for providing visual detection of said surface through said window; and (f) third operating cam means (58, 60) provided on said head and co-acting with said first attaching means for operating the latter so that, on moving said head relative to said carrier, said shutter means pivotally moves into its "off" or second position for preventing the detection of said surface through said window.
Claim 3
Dependent Claim
192 words
The push button switch position indicator as defined in claim 1, wherein said shutter means comprises a pair of shutters provided, each in the form of a hollow paraboloid, and wherein (a) said first attaching means has a pair of holes (for 32, 34) in each of said limbs (40, 42), provided in the proximity of said signal surface (56), a cam-like shoulder (52, 54) at each end of said shutters and carrying an inwardly projecting pin (32, 34) perpendicular to the longitudinal axis so as to engage the corresponding one of said holes in each of said limbs; (b) said first operating cam means has a pair of inwardly projecting shoulders (46, 48) on said cap (44), each of said projecting shoulders carrying a pair of projections (64, 66) so that they abut said cam-like shoulders and cause the latter to turn in one direction in said holes; and (c) said second operating cam means has abutments (58, 60) on said head (16) behind said cam-like shoulder so that they abut the latter and cause them to turn in said holes in a direction reverse with respect to the one direction.
Claim 4
Dependent Claim
28 words
The push button switch position indicator as defined in claim 1, wherein walls (24, 26) of said head (16) are tapered towards the end remote from said window.
Claim 5
Dependent Claim
166 words
The push button switch position indicator as defined in claim 1, wherein a pair of said shutters (28, 30) is provided; (a) said first attaching means has a pair of openings (36, 38) in each of said limbs (40, 42), in the proximity of said signal surface (56), a cam-like shoulder (52, 54) at each end of said shutters and carrying an inwardly projecting pin (32, 34) perpendicular to the longitudinal axis so as to engage the corresponding one of said openings in each of said limbs; (b) said first operating cam means has a pair of inwardly projecting shoulders (46, 48) on said cap (44), which abut said cam-like shoulders and cause the latter to turn in one direction in said openings; and (c) said second operating cam means has abutments (58, 60) on said head (16) behind said cam-like shoulders so that they abut the latter and cause them to turn in said openings in a direction reverse with respect to the one direction.
Claim 6
Dependent Claim
19 words
The push button switch position indicator as defined in claim 4, wherein said openings (36, 38) are extended slots.
Claim 7
Dependent Claim
86 words
The push button switch position indicator as defined in claim 1, wherein said switch frame means (4) has slots (6, 8, 10) therein, and wherein the rear ends of said limbs (40, 42) have hooks (22) which hook into said slots, the latter being provided in said switch frame means along two oppositely disposed sides thereof and also along sides adjacent said oppositely disposed sides so that said head (16) can selectively be mounted in two mutually perpendicular planes to provide selective horizontal and vertical mounting.
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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |