Patent US3815434A successfully refreshed from Google Patents.
US3815434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick action nut assembly for screw type jacks
Assignee: Individual
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Filing: 1972-07-26
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Granted: 1974-06-11
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Expires: 1992-07-26
Abstract
Abstract A quick action operating nut assembly for a screw of a screw type jack having a pair of hingedly interconnected complementally threaded nut halves swingable between an open position for receiving, or for removal from, the screw and a closed position for threadedly engaging the screw so that the nut assembly can be selectively applied to the screw at any desired position along its length. One of the nut halves has a radially extending arm and the other has a radially extending lug. A sleeve is slidably mounted on the arm moveable into and out of locking engagement with the lug when the nut halves are in a closed position.
Inventors
- 👤 P Seger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:23
CPC Classifications
E; E04; E04G; E04G25/00; E04G25/04; E04G25/06; F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/2025; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19735; Y10T74/1974
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
An operating nut assembly for attachment to a screw of a screw type jack, the assembly comprising: a. a pair of hinged, complementary threaded nut halves adaptEd to be swung between an open and a closed position so as to enable the nut assembly to be fitted to or removed from the screw, b. an arm extending radially from one of the nut halves, c. a lug projecting radially from the other nut half and extending parallel to the arm when the nut halves are in a closed position, d. a sleeve mounted on the arm for longitudinal slideable movement into and out of locking engagement with the lug when the nut halves are in the closed position, e. an abutment member on the arm for limiting slideable movement of the sleeve when the latter is moved out of locking engagement with the lug, f. a spring extending between the sleeve and the arm for yeildably urging sleeve to the locking position.
Claim 2
Dependent Claim
162 words
An operating nut assembly for attachment to a screw of a screw type jack, the assembly comprising: a. a pair of hinged, complementary threaded nut halves adaptEd to be swung between an open and a closed position so as to enable the nut assembly to be fitted to or removed from the screw, b. an arm extending radially from one of the nut halves, c. a lug projecting radially from the other nut half and extending parallel to the arm when the nut halves are in a closed position, d. a sleeve mounted on the arm for longitudinal slideable movement into and out of locking engagement with the lug when the nut halves are in the closed position, e. an abutment member on the arm for limiting slideable movement of the sleeve when the latter is moved out of locking engagement with the lug, f. a spring extending between the sleeve and the arm for yeildably urging sleeve to the locking position.
Claim 3
Dependent Claim
31 words
An operating nut assembly as claimed in claim 1 in which the arm has a slot for receiving of the lug when the nut halves are moved to the closed position.
Claim 4
Dependent Claim
26 words
An operating nut assembly as claimed in claim 1 in which the threads of the nut halves terminate short of the side surfaces of the latter.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |