US3810359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load chain loose end stop
Assignee: Columbus McKinnon Corp
•
Filing: 1973-01-15
•
Granted: 1974-05-14
•
Expires: 1993-01-15
Abstract
Abstract An end stop is associated with an elongated link type load chain in order to prevent a loose end of the chain from running through a hoist. The end stop includes a standard chain end link held sidewise or horizontally within the next to the last or vertically disposed link of the load chain by legs of a pull link; the pull link serving to define a convenient finger grip to facilitate manual pulling down on the loose end of the load chain.
Inventors
- 👤 K Schreyer
- 👤 C Manney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:40
CPC Classifications
F; F16; F16G; F16G13/00; F16G17/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
145 words
In a device including a guide having an opening for controlling passage of an elongated link type chain through said device such that adjacent links of said chain are arranged end to end and in an essentially perpendicular relationship, and an end stop for preventing an end of said chain from running inwardly through said guide opening, the improvement wherein said end stop includes: means locked to a last link of said end of said chain for maintaining said last link sidewise relative to a next to last link of said chain, whereby ends of said last link are disposed to engage said guide adjacent said opening to prevent passage of said end of said chain inwardly therethrough, said means normally extending from said last link only in a direction away from said next to last link whereby only said last link engages said guide.
Claim 2
Dependent Claim
145 words
In a device including a guide having an opening for controlling passage of an elongated link type chain through said device such that adjacent links of said chain are arranged end to end and in an essentially perpendicular relationship, and an end stop for preventing an end of said chain from running inwardly through said guide opening, the improvement wherein said end stop includes: means locked to a last link of said end of said chain for maintaining said last link sidewise relative to a next to last link of said chain, whereby ends of said last link are disposed to engage said guide adjacent said opening to prevent passage of said end of said chain inwardly therethrough, said means normally extending from said last link only in a direction away from said next to last link whereby only said last link engages said guide.
Claim 3
Dependent Claim
40 words
The improvement according to claim 1, wherein said means locked to said last link additionally defines a pull portion manually operable by an operator of said device to facilitate pulling of said end of said chain outwardly through said opening.
Claim 4
Dependent Claim
83 words
The improvement according to claim 1, wherein said means fixed to said last link includes an intermediate portion having a pair of leg portions extending therefrom, said leg portions extending through said last link adjacent opposite sides of said next to last link and being looped to lock said last link therewithin, and said intermediate portion defining a pull loop for receiving the fingers of an operator of said device to facilitate pulling of said end of said chain outwardly through said opening.
Claim 5
Dependent Claim
17 words
The improvement according to claim 3, wherein said leg and intermediate portions are of integrally formed construction.
Claim 6
Dependent Claim
188 words
The combination of a link chain and an end stop fixed to an end portion of said chain for preventing running of said end portion inwardly through an essentially clover-leaf shaped opening of a chain guide of a device with which said chain is associated, said end portion including an elongated last link having an end to end dimension in excess of the dimension of said opening, and said end stop includes a pull link to be gripped by an operator of said device to facilitate manual pulling of said end portion outwardly through said opening, said pull link having means for locking said pull link to said last link for maintaining said last link in a sidewise relationship relative to a next to last link of said chain thereby to position opposite ends of said last link for engagement with said guide adjacent said opening to prevent running of said end portion inwardly through said opening, said means and said pull link normally extending from said last link only in a direction away from said next to last link whereby only said last link engages said guide.
Claim 7
Dependent Claim
188 words
The combination of a link chain and an end stop fixed to an end portion of said chain for preventing running of said end portion inwardly through an essentially clover-leaf shaped opening of a chain guide of a device with which said chain is associated, said end portion including an elongated last link having an end to end dimension in excess of the dimension of said opening, and said end stop includes a pull link to be gripped by an operator of said device to facilitate manual pulling of said end portion outwardly through said opening, said pull link having means for locking said pull link to said last link for maintaining said last link in a sidewise relationship relative to a next to last link of said chain thereby to position opposite ends of said last link for engagement with said guide adjacent said opening to prevent running of said end portion inwardly through said opening, said means and said pull link normally extending from said last link only in a direction away from said next to last link whereby only said last link engages said guide.
Claim 8
Dependent Claim
37 words
The combination according to claim 8, wherein said means includes a pair of members passed through said last link adjacent opposite sides of said next to last link and being looped to lock said last link therewithin.
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) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |