← Back to Patent Explorer
US4174472A Expired / Lapsed US ⏱️ 0.0 years remaining

Pivoted-actuator switch with integral off-lock

Assignee: Cutler Hammer Inc
•
Filing: 1978-10-26
•
Granted: 1979-11-13
•
Expires: 1998-10-26
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A pivoted-actuator switch having a switch operator including a pivotally-mounted contact actuator and a manually-grasped, removable operating lever or "key" snap-in mounted to the contact actuator for actuating the switch. A spring-biased pivotal lock bar is normally retracted by the operating lever into the contact actuator so as to clear the rim of the hole in the switch housing through which the contact actuator extends. When the operating lever is removed, the spring pivots the lock bar to extend out from the contactor actuator and to catch on the rim of the hole thereby to prevent operation of the switch from off to on position. When the switch is on, it can nevertheless be turned off because this lock bar is shaped for one-way cam-in past the rim and then to pivot out again to abut the top of the rim. The operating lever has a projecting finger effective when inserted into the contact actuator to pivot the lock bar inwardly to clear the housing rim and thus to allow normal switch operation. The housing may be shaped to make the lock bar inaccessible for unlocking from the outside.

Inventors

  • 👤 Leonardus J. Josemans

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 03:30
CPC Classifications
H; H01; H01H; H01H27/00; H01H27/06

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 292 words
A self-enclosed pivoted-actuator switch with integral off-lock comprising: a switch housing; stationary contact means within said housing connected to external terminals; movable contact means within said housing selectively operable to an "on" position closing a circuit with respect to said stationary contact means or to an "off" position opening said circuit; a switch operator subassembly; a hole in said housing; supporting means on said housing adjacent said hole pivotally mounting said switch operator subassembly for reciprocal movement to actuate said movable contact means; and said switch operator subassembly comprising: a contact actuator extending from said pivotal supporting means through said hole into said housing for actuating said movable contact means to said "on" or "off" position; a slot within said contact actuator; a spring-biased locking member pivotally mounted within said slot in said contact actuator and having a normal unlocking position wherein said member is retracted into said contact actuator and a locking position wherein a stop lug of said locking member at one side of its pivot projects from said contact actuator to abut the top of the rim of said hole in order to lock said contact actuator in its "off" position; a removable operating lever having a manually engagable portion; means for snap-in coupling said operating lever to said contact actuator so that selective actuation thereof by said manually engagable portion effects pivotal movement of both said removable operating member and said contact actuator coupled thereto; a cam on said locking member at the other side of its pivot; and a projection on said removable operating lever operable when inserted into said slot to engage said cam and pivot said locking member to retract said stop lug into said unlocking position thereby to allow normal operation of the switch.
Claim 2
Dependent Claim 292 words
A self-enclosed pivoted-actuator switch with integral off-lock comprising: a switch housing; stationary contact means within said housing connected to external terminals; movable contact means within said housing selectively operable to an "on" position closing a circuit with respect to said stationary contact means or to an "off" position opening said circuit; a switch operator subassembly; a hole in said housing; supporting means on said housing adjacent said hole pivotally mounting said switch operator subassembly for reciprocal movement to actuate said movable contact means; and said switch operator subassembly comprising: a contact actuator extending from said pivotal supporting means through said hole into said housing for actuating said movable contact means to said "on" or "off" position; a slot within said contact actuator; a spring-biased locking member pivotally mounted within said slot in said contact actuator and having a normal unlocking position wherein said member is retracted into said contact actuator and a locking position wherein a stop lug of said locking member at one side of its pivot projects from said contact actuator to abut the top of the rim of said hole in order to lock said contact actuator in its "off" position; a removable operating lever having a manually engagable portion; means for snap-in coupling said operating lever to said contact actuator so that selective actuation thereof by said manually engagable portion effects pivotal movement of both said removable operating member and said contact actuator coupled thereto; a cam on said locking member at the other side of its pivot; and a projection on said removable operating lever operable when inserted into said slot to engage said cam and pivot said locking member to retract said stop lug into said unlocking position thereby to allow normal operation of the switch.
Claim 3
Dependent Claim 64 words
The self-enclosed pivoted-actuator switch with integral off-lock claimed in claim 1, wherein: said stop lug is at the outer side of said locking member below its pivot and said cam is at the inner side of said locking member above its pivot so that pivoting of said locking member by engagement of said cam causes withdrawal of said stop lug within said contact actuator.
Claim 4
Dependent Claim 41 words
The self-enclosed pivoted-actuator switch with integral off-lock claimed in claim 1, wherein: said contact actuator comprises two complementary molded insulating halves held together by said supporting-means; and said slot comprises recesses in the facing surfaces of said halves adjoining one another.
Claim 5
Dependent Claim 39 words
The self-enclosed pivoted-actuator switch with integral off-lock claimed in claim 1, wherein: said spring-biased locking member comprises an helical compression spring between a wall of said slot and the side of said locking member substantially opposite said stop lug.
Claim 6
Dependent Claim 54 words
The self-enclosed pivoted-actuator switch with integral off-lock claimed in claim 1, wherein: said contact actuator has a curved surface of substantially constant radius at said stop lug that normally moves in close proximity to said rim of said hole in said housing as said switch operator subassembly is actuated between "on" and "off" positions.
Claim 7
Dependent Claim 46 words
The self-enclosed pivoted-actuator switch with integral off-lock claimed in claim 1, wherein: said housing comprises an upstanding portion at the side where said stop lug projects out from said contact actuator to prevent access for depressing said stop lug when said operating lever has been removed.
Claim 8
Dependent Claim 34 words
The self-enclosed pivoted-actuator switch with integral off-lock claimed in claim 1, wherein: said contact-actuator comprises an integrally-molded lip adjacent said slot that limits the outward projection of said stop lug to the required amount.
Claim 9
Dependent Claim 40 words
The self-enclosed pivoted-actuator switch with integral off-lock claimed in claim 1, wherein: said slot in said contact actuator is to one side of said pivotal supporting means thereby to leave sufficient space in said contactor actuator for contact actuating plungers.

References Cited (Backward Citations)

US3626118A Cited
US3598162A Cited
DE1947014A1 Cited
US3906176A Cited
US4013858A Cited
US4121065A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-11-12 1983-05-14 1983-11-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-11-12 1987-05-14 1987-11-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-11-12 1991-05-14 1991-11-13 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag