US4417758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remotely releasable choker
Assignee: Weyerhaeuser Co
•
Filing: 1981-12-03
•
Granted: 1983-11-29
•
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 07:51
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)
US967141A
Cited
US1963634A
Cited
US3134154A
Cited
US3104909A
Cited
US3239266A
Cited
US4358144A
Cited
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 |