US4486926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet cutting device
Assignee: MILLIKEN RESEARCH CORPORATIONA COR OF SOUTH CAROLINA
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Filing: 1982-12-02
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Granted: 1984-12-11
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Expires: 2002-12-02
Abstract
Abstract A reciprocating web cutting knife which employs a fixed rotary knife blade which is indexed upon each full reciprocation of the knife carriage. A ratchet and pawl arrangement cooperates with a ratchet wheel mounted on the knife to index the knife.
Inventors
- 👤 Major B. Scruggs
- 👤 Robert C. Fay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:28
CPC Classifications
D; D06; D06C; D06C13/00; D06C13/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
A cutter apparatus comprising: a fixed support member having a track therein, a sliding cutter means having means engaging said track to allow said cutter means to be slid in said track, a substantially cylindrical cutting blade fixed to said cutter means, a first means operably associated with said cutter means to slide said cutter means back and forth in said track and an indexing means connected to said cutter means to cause said cutting blade to be indexed upon being slid back and forth by said first means, said indexing mean including a ratchet wheel connected to said cutting blade and a pawl operably associated with said ratchet wheel, said indexing means also including a lever arm pivotally connected to said cutter means at one end and to said pawl at the other end, said indexing means including stop means located on both sides of said lever arm and connected to said cutter means to limit the pivotal movement of said lever arm to allow said pawl to index said cutting blade incrementally upon each complete reciprocation of said cutter means.
Claim 2
Dependent Claim
182 words
A cutter apparatus comprising: a fixed support member having a track therein, a sliding cutter means having means engaging said track to allow said cutter means to be slid in said track, a substantially cylindrical cutting blade fixed to said cutter means, a first means operably associated with said cutter means to slide said cutter means back and forth in said track and an indexing means connected to said cutter means to cause said cutting blade to be indexed upon being slid back and forth by said first means, said indexing mean including a ratchet wheel connected to said cutting blade and a pawl operably associated with said ratchet wheel, said indexing means also including a lever arm pivotally connected to said cutter means at one end and to said pawl at the other end, said indexing means including stop means located on both sides of said lever arm and connected to said cutter means to limit the pivotal movement of said lever arm to allow said pawl to index said cutting blade incrementally upon each complete reciprocation of said cutter means.
Claim 3
Independent Claim
200 words
An apparatus to separate a carpet fabric having two facing backings spaced from one another by yarn connected thereto into two separate carpet like fabrics comprising: means to supply the carpet fabric in a downward direction, a cutting means reciprocably mounted in the path of travel of the carpet fabric, said cutting means having a circular, fixed cutting blade projecting upward into the path of travel of the carpet fabric, means to reciprocate the cutting means in contact with the yarn in the carpet fabric and an indexing means operably associated with said cutting means to automatically index said cutting blade upon reciprocation of said cutting means, said indexing means including a ratchet wheel connected to said cutting blade and a pawl operably associated with said ratchet wheel, said indexing means also including a lever arm pivotally connected to said cutting means at one end and to said pawl at the other end, said indexing means including stop means located on both sides of said lever arm and connected to said cutting means to limit the pivotal movement of said lever arm to allow said pawl to index said cutting blade incrementally upon each complete reciprocation of said cutting means.
Claim 4
Independent Claim
200 words
An apparatus to separate a carpet fabric having two facing backings spaced from one another by yarn connected thereto into two separate carpet like fabrics comprising: means to supply the carpet fabric in a downward direction, a cutting means reciprocably mounted in the path of travel of the carpet fabric, said cutting means having a circular, fixed cutting blade projecting upward into the path of travel of the carpet fabric, means to reciprocate the cutting means in contact with the yarn in the carpet fabric and an indexing means operably associated with said cutting means to automatically index said cutting blade upon reciprocation of said cutting means, said indexing means including a ratchet wheel connected to said cutting blade and a pawl operably associated with said ratchet wheel, said indexing means also including a lever arm pivotally connected to said cutting means at one end and to said pawl at the other end, said indexing means including stop means located on both sides of said lever arm and connected to said cutting means to limit the pivotal movement of said lever arm to allow said pawl to index said cutting blade incrementally upon each complete reciprocation of said cutting means.
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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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |