Patent US4318562A successfully refreshed from Google Patents.
US4318562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grasping apparatus for handling heated articles
Assignee: Pilkington North America Inc
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Filing: 1980-03-03
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Granted: 1982-03-09
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Expires: 2000-03-03
Abstract
Abstract Apparatus for removing and installing hot refractory bricks, particularly in the checkerwork structures of the regenerators employed in glass melting furnaces, the apparatus having a manually operable, selectively actuatable claw mechanism mounted on one end of an elongated support member for gripping and moving the bricks individually at a remote location. The claw mechanism is operated by a power cylinder mounted on the other end of the elongated support member, the cylinder being manually controlled by an operator who also manipulates the support member to move a grasped brick to a desired position. A cooling medium, such as air or the like, may be employed for cooling the claw mechanism.
Inventors
- 👤 Raymond E. Tompkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:43
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/235; C03B5/237; C03B5/167; Y; Y02; Y02P; Y02P40/00; Y02P40/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
An apparatus for grasping individual articles at a remote location comprising an elongated support member, a claw mechanism mounted at one end of said elongated support member, said claw mechanism including a stationary claw arm and a pivotal claw arm, means for pivotally mounting said pivotal claw arm on said elongated support member whereby one end of said pivotal claw arm is movable toward and away from the corresponding end of said stationary claw arm, opposed gripping pins affixed to said stationary and pivotal claw arms, means for cooling said claw arms and said gripping pins carried thereby, moving means mounted at the other end of said elongated support member, push-pull means connecting said moving means to said pivotal claw arm for moving the depending end of said pivotal arm to-and-fro, and means for selectively actuating said moving means.
Claim 2
Independent Claim
139 words
An apparatus for grasping individual articles at a remote location comprising an elongated support member, a claw mechanism mounted at one end of said elongated support member, said claw mechanism including a stationary claw arm and a pivotal claw arm, means for pivotally mounting said pivotal claw arm on said elongated support member whereby one end of said pivotal claw arm is movable toward and away from the corresponding end of said stationary claw arm, opposed gripping pins affixed to said stationary and pivotal claw arms, means for cooling said claw arms and said gripping pins carried thereby, moving means mounted at the other end of said elongated support member, push-pull means connecting said moving means to said pivotal claw arm for moving the depending end of said pivotal arm to-and-fro, and means for selectively actuating said moving means.
Claim 3
Dependent Claim
56 words
An apparatus for grasping individual articles at a remote location as claimed in claim 1, including means attached to said other end of said elongated support member for gripping by an operator whereby said apparatus may be manipulated to selectively grasp an individual article between said claw members and move the article to a desired location.
Claim 4
Dependent Claim
52 words
An apparatus for grasping individual articles at a remote location as claimed in claim 2, wherein said gripping means comprises a cross bar affixed to the end of said support member adjacent said moving means whereby an operator can grip said cross bar and move the claw mechanism on said support member.
Claim 5
Dependent Claim
36 words
An apparatus for grasping individual articles at a remote location as claimed in claim 1, wherein said pivotal member comprises a pair of tubular members pivotally mounted intermediate their ends on and astride said support member.
Claim 6
Dependent Claim
43 words
An apparatus for grasping individual articles at a remote location as claimed in claim 1, wherein said support member, said push-pull means and said claw mechanism comprise tubular members and said cooling means is air directed through the passages of said tubular members.
Claim 7
Dependent Claim
61 words
An apparatus for grasping individual articles at a remote location as claimed in claim 5, wherein said gripping pins extend through orifices in the opposed walls of the tubular stationary and pivotal claw arms, said orifices surrounding and being larger than said gripping pins whereby said cooling air escaping from the tubular members cools the exposed portions of said gripping pins.
Claim 8
Dependent Claim
31 words
An apparatus for grasping individual articles at a remote location as claimed in claim 1, wherein said push-pull means is an elongated rod connecting said pivotal member to said moving means.
Claim 9
Dependent Claim
29 words
An apparatus for grasping individual articles at a remote location as claimed in claim 7, wherein said means for moving said push-pull rod to-and-fro comprises a double-acting power cylinder.
Claim 10
Dependent Claim
29 words
An apparatus for grasping individual articles at a remote location as claimed in claim 8, wherein said means for selectively actuating said moving means comprises a manually operable valve.
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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) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |