Patent US4222453A successfully refreshed from Google Patents.
Patent US4183268A successfully refreshed from Google Patents.
US4183268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for replacing springs
Assignee: Individual
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Filing: 1978-06-14
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Granted: 1980-01-15
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Expires: 1998-06-14
Abstract
Abstract A device useful in replacing springs in equipment such as chain saws, lawnmowers and the like having pull-rope starter assemblies is provided which device comprises a substantially cylindrical or similar member about which the old or new spring is wound and movably positioned on said member a collar capable of being moved into contact with and held against the wrapped spring to hold it in place while it is being moved to and inserted into the equipment. The surfaces of the element against which the spring is wound are substantially smooth to afford a ready sliding of the wound spring off the device into the operative position in said equipment.
Inventors
- 👤 Jerome E. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:09
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: 5
Claim 1
Independent Claim
261 words
Apparatus for use by a person in replacing a spring in a device, such as a chain saw, which apparatus comprises a cylindrical body which is hollow at one end which has an inside diameter larger than the arbor around which said spring is to be positioned; at said end of said cylindrical body, anchor means to hold one end of said spring in place during the winding of said spring around the outer walls of said body at said end, said wall being substantially smooth to afford ready sliding of the wound spring off said body when said end of said body and said wound spring are positioned for placement of said spring about said arbor; and an element slidable on said cylindrical body which element comprises a ring-like element having an inside diameter slightly larger than the outside diameter of said cylindrical body and being freely movable to bring it into and out of operative contact with a spring wound around said outer walls of said body at its said end and when in operative contact with said spring being capable of being readily held by a hand of the user while the resultant assembly is brought into replacement position of said spring about said arbor in said device, said slidable element comprising a disk the majority of which fully covers the spring coil wound on said body but having indentations which permit fingers of said person to contact the sides of the coil to prevent it from unwinding as said person moves the coil into position for replacement.
Claim 2
Dependent Claim
261 words
Apparatus for use by a person in replacing a spring in a device, such as a chain saw, which apparatus comprises a cylindrical body which is hollow at one end which has an inside diameter larger than the arbor around which said spring is to be positioned; at said end of said cylindrical body, anchor means to hold one end of said spring in place during the winding of said spring around the outer walls of said body at said end, said wall being substantially smooth to afford ready sliding of the wound spring off said body when said end of said body and said wound spring are positioned for placement of said spring about said arbor; and an element slidable on said cylindrical body which element comprises a ring-like element having an inside diameter slightly larger than the outside diameter of said cylindrical body and being freely movable to bring it into and out of operative contact with a spring wound around said outer walls of said body at its said end and when in operative contact with said spring being capable of being readily held by a hand of the user while the resultant assembly is brought into replacement position of said spring about said arbor in said device, said slidable element comprising a disk the majority of which fully covers the spring coil wound on said body but having indentations which permit fingers of said person to contact the sides of the coil to prevent it from unwinding as said person moves the coil into position for replacement.
Claim 3
Dependent Claim
16 words
Apparatus in accordance with claim 1 in which said disk is made of a plastic material.
Claim 4
Dependent Claim
12 words
Apparatus in accordance with claim 1 in which said disk is flat.
Claim 5
Dependent Claim
12 words
Apparatus in accordance with claim 1 in which said disk is transparent.
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) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |