Patent US3748716A successfully refreshed from Google Patents.
US3748716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starter spring assembly tool and method
Assignee: Mcculloch Corp
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Filing: 1971-06-17
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Granted: 1973-07-31
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Expires: 1991-06-17
Abstract
Abstract A starter spring assembly tool utilizing relatively rotatable bodies for selectively holding the ends of the starter spring to be coiled prior to its insertion within a housing. An inner cylinder is rotatably disposed within an outer cylinder so that rotation thereof will cause the spring to coil or uncoil. Locking or clutching means are provided for preventing relative rotation of the inner and outer cylinders while the spring is being coiled and after it is tightly wound, or coiled, and engaged with the outer periphery of the inner member.
Inventors
- 👤 R Fidler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:41
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/14; B25B27/30; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53613; Y10T29/53626
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
402 words
Apparatus for coiling a spring and inserting the spring in an installation, said apparatus comprising: a first member; a second member rotatable relative to said first member; first means for securing an outer end of the spring to said first member; second means for securing an inner end of said spring to said second, relatively rotatable, member; means for causing relative rotation of said first and second members to wind said spring about one of said members while said spring is supported by an auxiliary supporting surface means extraneous of said apparatus; spring edge engaging means carried by one of said members and operable to prevent axial displacement of coils of said spring during said winding; a locking mechanism for selectively locking said first and second members to prevent relative rotation therebetween; and said spring edge engaging means and said locking means cooperating to secure said spring when wound, with said first and second members being operable, in response to manual manipulation, to transport said wound spring to an installation and permit said wound spring to be disengaged from said first and second securing means; said first member comprising hand grip means operable to permit manual support of said apparatus while said second member is being manually rotated; said locking mechanism including first locking means carried by said first member, second locking means carried by said second member, one of said first and second locking means being displaceable generally longitudinally of said apparatus to lockingly engage the other of said first and second locking members while said first member is being manually supported; said spring edge engaging means being operable to engage top edge means of coils of said spring during the winding thereof while bottom edge means of said coils of said spring are engaged by said auxiliary supporting surface means, said spring engaging means and said auxiliary supporting surface means cooperating during the winding of said spring to prevent axial displacement of coils of said spring; and said second means, for securing an inner end of said spring, comprising recess means operable to detachably receive and secure a hook means carried by an inner end of said spring, with said recess means being operable to freely disengage from said hook means of said spring means in response to rotation of said second member in a direction away from said hook means and toward an adjacent coil portion of said spring.
Claim 2
Dependent Claim
402 words
Apparatus for coiling a spring and inserting the spring in an installation, said apparatus comprising: a first member; a second member rotatable relative to said first member; first means for securing an outer end of the spring to said first member; second means for securing an inner end of said spring to said second, relatively rotatable, member; means for causing relative rotation of said first and second members to wind said spring about one of said members while said spring is supported by an auxiliary supporting surface means extraneous of said apparatus; spring edge engaging means carried by one of said members and operable to prevent axial displacement of coils of said spring during said winding; a locking mechanism for selectively locking said first and second members to prevent relative rotation therebetween; and said spring edge engaging means and said locking means cooperating to secure said spring when wound, with said first and second members being operable, in response to manual manipulation, to transport said wound spring to an installation and permit said wound spring to be disengaged from said first and second securing means; said first member comprising hand grip means operable to permit manual support of said apparatus while said second member is being manually rotated; said locking mechanism including first locking means carried by said first member, second locking means carried by said second member, one of said first and second locking means being displaceable generally longitudinally of said apparatus to lockingly engage the other of said first and second locking members while said first member is being manually supported; said spring edge engaging means being operable to engage top edge means of coils of said spring during the winding thereof while bottom edge means of said coils of said spring are engaged by said auxiliary supporting surface means, said spring engaging means and said auxiliary supporting surface means cooperating during the winding of said spring to prevent axial displacement of coils of said spring; and said second means, for securing an inner end of said spring, comprising recess means operable to detachably receive and secure a hook means carried by an inner end of said spring, with said recess means being operable to freely disengage from said hook means of said spring means in response to rotation of said second member in a direction away from said hook means and toward an adjacent coil portion of said spring.
Claim 3
Dependent Claim
63 words
Apparatus as described in claim 1: wherein said second relatively rotatable member extends longitudinally of and projects beyond opposite ends of said first member; wherein said first locking means includes castellation means carried by one end of said first member; and wherein said second locking means includes locking lug means carried by said second member and selectively, lockingly engageable with said castellation means.
Claim 4
Dependent Claim
180 words
An apparatus as described in claim 1: wherein said second member includes one end portion projecting beyond said first member and another end portion contained within said first member; and said second securing means being carried by said one projecting end portion; wherein said locking means includes: shaft means extending from said other end portion of said second member, first clutch means, comprising said first locking means and carried by said first member, second clutch means, comprising said first locking means and carried by said shaft means, resilient means yieldably biasing said first and second clutch means into clutching cooperation operable to impede relative rotation between said shaft means and said first member, connecting means beTween said shaft means and said second member operable to cause said shaft means, when substantially immobilized relative to said first outer member, to substantially immobilize said second member, and manually manipulatable declutching means carried by said first member and operable to declutch said first and second clutch means and permit rotation of said shaft means and said second member relative to said first member.
Claim 5
Independent Claim
435 words
A method for coiling a spring and inserting the spring in an installation, said method comprising: securing an outer end of a coil spring means to a first member of a spring winding apparatus; securing an inner end of said coil spring means to a second relatively rotatable member of said spring winding apparatus; manually causing relative rotation of said first and second members to wind said spring means about one of said members while said spring means is being supported by auxiliary supporting surface means extraneous of said apparatus; manually supporting said apparatus by engaging hand-grippable means of said first member while said second member is being manually rotated; engaging edge means of coils of said coil spring means during the winding thereof to prevent axial displacement of said coils during said winding; effecting said prevention of coil displacement with spring edge engaging means carried by said first member and operable to engage top edge means of coils of said spring during the winding thereof while bottom edge means of said coils of said spring are engaged by auxiliary supporting surface means, with said spring engaging means and said auxiliary supporting surface means cooperating during the winding of said spring to prevent axial displacement of coils of said spring; selectively interlocking said first and second members to prevent relative rotation therebetween and secure relative positions of said inner and outer spring ends; effecting said interlocking with first locking means carried by said first member, second locking means carried by said second member, with one of said first and second locking means being displaceable generally longitudinally of said apparatus to lockingly engage the other of said first and second locking members while the first member is being manually supported; manually transporting said first and second members to an installation, with said spring means being disposed with said edge means thereof stabilized against mutual displacement; utilizing said first and second members to position said spring means in said installation; and disengaging said inner and outer ends of said spring from said first and second members and engaging at least one of said inner and outer spring ends with said installation; effecting said disengaging of said inner spring end with recess means carried by said second member and operable to detachably receive and secure a hook means carried by an inner end of said spring, with said recess means being operable to freely disengage from said hook means of said spring means in response to rotation of said second member in a direction away from said hook means and toward and adjacent coil portion of said spring.
Claim 6
Independent Claim
435 words
A method for coiling a spring and inserting the spring in an installation, said method comprising: securing an outer end of a coil spring means to a first member of a spring winding apparatus; securing an inner end of said coil spring means to a second relatively rotatable member of said spring winding apparatus; manually causing relative rotation of said first and second members to wind said spring means about one of said members while said spring means is being supported by auxiliary supporting surface means extraneous of said apparatus; manually supporting said apparatus by engaging hand-grippable means of said first member while said second member is being manually rotated; engaging edge means of coils of said coil spring means during the winding thereof to prevent axial displacement of said coils during said winding; effecting said prevention of coil displacement with spring edge engaging means carried by said first member and operable to engage top edge means of coils of said spring during the winding thereof while bottom edge means of said coils of said spring are engaged by auxiliary supporting surface means, with said spring engaging means and said auxiliary supporting surface means cooperating during the winding of said spring to prevent axial displacement of coils of said spring; selectively interlocking said first and second members to prevent relative rotation therebetween and secure relative positions of said inner and outer spring ends; effecting said interlocking with first locking means carried by said first member, second locking means carried by said second member, with one of said first and second locking means being displaceable generally longitudinally of said apparatus to lockingly engage the other of said first and second locking members while the first member is being manually supported; manually transporting said first and second members to an installation, with said spring means being disposed with said edge means thereof stabilized against mutual displacement; utilizing said first and second members to position said spring means in said installation; and disengaging said inner and outer ends of said spring from said first and second members and engaging at least one of said inner and outer spring ends with said installation; effecting said disengaging of said inner spring end with recess means carried by said second member and operable to detachably receive and secure a hook means carried by an inner end of said spring, with said recess means being operable to freely disengage from said hook means of said spring means in response to rotation of said second member in a direction away from said hook means and toward and adjacent coil portion of said spring.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |