Patent US4417758A successfully refreshed from Google Patents.
US4417758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remotely releasable choker
Assignee: Weyerhaeuser Co
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Filing: 1981-12-03
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Granted: 1983-11-29
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Expires: 2001-12-03
Abstract
Abstract In logging and other handling operations, a cable is often looped about the elongated object and cinched tight through a choker hook assembly in order to transport the objects. A remotely controlled hook assembly has a body, including an eye for the passage of the cable and a releasable latch arm for grasping the end of the cable. Encased within the body is a slidable pin that serves to lock the latch arm and therefore the end of the cable. A positioning device is also within the housing and serves to rotate a catch member allowing the slidable pin to move downwardly, thereby releasing the latch arm and cable. A pair of appropriately sized and located springs serve to both move the sliding pin downwardly and to bias the pin upwardly. A radio controlled servo may be used as the positioning device.
Inventors
- 👤 Dennis H. Vaders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:04
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/34; F; F16; F16G; F16G11/00; F16G11/14; Y; Y10; Y10S; Y10S294/00; Y10S294/905
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
A choker assembly, comprising: a substantially closed body, eye means on the body for allowing a cable to slide therethrough, a pivotally mounted latch arm on the outside of the body having an open position and a locked position where the locked position will capture and hold the end of a cable, means on and extending within the body for locking the latch arm in its locked position, and means within the body for releasing the locking means including a receiving means for receiving a remotely generated wave form release signal and actuating means for removing the locking means engaged with the latch arm in response to the release signal.
Claim 2
Dependent Claim
110 words
A choker assembly, comprising: a substantially closed body, eye means on the body for allowing a cable to slide therethrough, a pivotally mounted latch arm on the outside of the body having an open position and a locked position where the locked position will capture and hold the end of a cable, means on and extending within the body for locking the latch arm in its locked position, and means within the body for releasing the locking means including a receiving means for receiving a remotely generated wave form release signal and actuating means for removing the locking means engaged with the latch arm in response to the release signal.
Claim 3
Dependent Claim
33 words
A choker hook assembly as in claim 1 in which the locking means includes a portion of a slideable pin in the body and corresponding aperture in the end of the latch arm.
Claim 4
Dependent Claim
29 words
A choker hook assembly as in claim 2 in which a portion of the slideable pin engages the aperture in the latch arm when in its upwardly extended position.
Claim 5
Dependent Claim
21 words
A choker hook assembly as in claim 2 in which the pin is spring biased when in its upwardly extended position.
Claim 6
Dependent Claim
38 words
A choker hook assembly as in claim 2 in which a collar extends about the pin and has at least one shoulder thereon for engagement with a supporting means to hold the pin in its upwardly extended position.
Claim 7
Dependent Claim
21 words
A choker hook assembly as in claim 5 in which the locking means includes a rotatable catch holding the supporting means.
Claim 8
Dependent Claim
29 words
A choker hook assembly as in claim 6 in which the actuating means rotates the catch to move the supporting means into and out of engagement with the shoulder.
References Cited (Backward Citations)
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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) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |