Patent US4839826A successfully refreshed from Google Patents.
US3691998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Livestock headgate
Assignee: Individual
•
Filing: 1970-11-05
•
Granted: 1972-09-19
•
Expires: 1990-11-05
Abstract
Abstract A livestock headgate having a stanchion with a pair of swinging gates, a synchronizing mechanism for closing the gates simultaneously, stop latches to hold the gates in a closed position and adjustable stop means for limiting the size of the opening between the gates.
Inventors
- 👤 Wilbert L Luinstra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:45
CPC Classifications
A; A61; A61D; A61D3/00; A61D2003/003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
206 words
A headgate for handling animals in cattleman operations and the like comprising: a detachable stanchion, for installing in a chute-like opening, having top, bottom and side means forming a frame, a pair of gates pivoted for swinging on said side means and spaced to allow an opening when closed for the head of an animal to be restrained, and handle means at the side of said stanchion and attached to at least one of said gates to open and close the same, a synchronizing mechanism for operating the gates in unison when one gates is manipulated by said handle means, a stop means, for controlling the size of the head opining between the gates, having a sleeve slidably mounted on said top means of the frame and attached to said synchronizing mechanism, and an adjustable stop associated with said top means to limit the movement of said sleeve, and a locking mechanism, mounted on said top means of the frame, having a jam attached to said slidable sleeve, a pair of opposed braces for closing in on said jam and resulting in locking the gates, and lever means for releasing the braces from said stop means thereby allowing movement thereof and resulting in unlocking the gates.
Claim 2
Dependent Claim
206 words
A headgate for handling animals in cattleman operations and the like comprising: a detachable stanchion, for installing in a chute-like opening, having top, bottom and side means forming a frame, a pair of gates pivoted for swinging on said side means and spaced to allow an opening when closed for the head of an animal to be restrained, and handle means at the side of said stanchion and attached to at least one of said gates to open and close the same, a synchronizing mechanism for operating the gates in unison when one gates is manipulated by said handle means, a stop means, for controlling the size of the head opining between the gates, having a sleeve slidably mounted on said top means of the frame and attached to said synchronizing mechanism, and an adjustable stop associated with said top means to limit the movement of said sleeve, and a locking mechanism, mounted on said top means of the frame, having a jam attached to said slidable sleeve, a pair of opposed braces for closing in on said jam and resulting in locking the gates, and lever means for releasing the braces from said stop means thereby allowing movement thereof and resulting in unlocking the gates.
Claim 3
Dependent Claim
26 words
A device as described in claim 1 in which each gate has a plate mounted on the top thereof to which said synchronizing mechanism is attached.
Claim 4
Dependent Claim
30 words
A device as described in claim 2 in which the synchronizing mechanism has a pair of arms pivotally connected to said plates and a cross bar pivotally connecting said arms.
Claim 5
Dependent Claim
21 words
A device as described in claim 1 in which the jam is an upright bushing containing rubber-like material as a backstop.
Claim 6
Dependent Claim
31 words
A device as described in claim 1 in which said braces are attached to a pair of latch arms pivotally secured at one end to said top means of the frame.
Claim 7
Dependent Claim
31 words
A device as described in claim 5 in which the other ends of the latch arms contain a pair of parallel upright standards which are normally urged together by a spring.
Claim 8
Dependent Claim
45 words
A device as described in claim 6 in which a lever with a finger to fit between said standards is mounted in association with said locking mechanism to open said latch arms and release the braces from said jam whereby the gates may be opened.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |